Relevant bibliographies by topics / Adsorbent material

Academic literature on the topic 'Adsorbent material'

Author: Grafiati
Published: 10 December 2022
Last updated: 9 March 2023

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Journal articles on the topic "Adsorbent material"

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Agustiani, Tia, Asep Saefumillah, and Hanies Ambarsari. "Studi Pemanfaatan Limbah Biomassa sebagai Raw Material Adsorben SiC dalam Penurunan Konsentrasi Amonia sebagai Parameter Bau dalam Air Limbah." Jurnal Teknologi Lingkungan 22, no. 2 (July 31, 2021): 190–98. http://dx.doi.org/10.29122/jtl.v22i2.4838.

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ABSTRACT Biomass as raw material is one solution that can be developed in the management of agricultural, plantation, and industrial waste. The utilization of biomass-derived from waste can help reduce pollution and environmental pollution. This research was conducted to make Silicon Carbide (SiC) adsorbent from wood biomass using Sengon sawdust as a source of carbon and non-wood biomass, namely coconut husk, as a source of silica. SiC adsorbent is applied for ammonium adsorption, which has implications on reducing ammonia gas from wastewater, reducing odor. The research methods included isolation of silica and carbon, the production of SiC adsorbent by magnesiothermic reduction, and the characterization of SiC adsorbents with XRD and SEM-EDX. Adsorption capacities of SiC to ammonium were determined according to SiO2:C adsorbent ratios (1:3 and 5:3), adsorbent mass variations, and ammonium concentrations in simulated wastewater using the spectrophotometric method. The results showed that SiC could be used as an adsorbent because there are pores on the surface structure. The optimum SiO2:C adsorbent ratio in adsorbing ammonium was 1:3 (SiC 136) with 45% adsorbed ammonium and an adsorption capacity of 0.47 mg/g. The optimum adsorbent mass in adsorbing ammonium was 0.1 g with 41.77% adsorbed ammonium. The optimum concentration of ammonium in simulated wastewater for ammonium adsorption was 20 mg/L with 46.25% adsorbed ammonium. The adsorption isotherm pattern during the ammonium adsorption process follows the Freundlich isotherm, which means that the adsorption process occurs physically. Keywords: adsorbent, adsorption, ammonia, biomass, coconut husk, SiC ABSTRAK Biomassa sebagai raw material merupakan salah satu solusi yang dapat dikembangkan dalam pengelolaan limbah hasil pertanian, perkebunan, dan industri. Pemanfaatan biomassa yang berasal dari limbah dapat membantu mengurangi tingkat polusi dan pencemaran lingkungan. Penelitian ini dilakukan untuk membuat adsorben Silikon Carbida (SiC) dari biomassa kayu yaitu memanfaatkan serbuk gergaji kayu Sengon sebagai sumber karbon dan biomassa non kayu yaitu sabut kelapa sebagai sumber silika. Adsorben SiC diaplikasikan dalam penjerapan amonium yang berimplikasi pada potensi penurunan gas amonia dari air limbah sehingga adsorben SiC berpotensi mengurangi bau dalam air limbah. Metode penelitian meliputi isolasi silika, isolasi karbon, pembuatan adsorben SiC secara reduksi magnesiotermik dan karakterisasi adsorben SiC dengan XRD dan SEM-EDX. Penentuan daya adsorpsi SiC sebagai adsorben terhadap variasi rasio adsorben SiO2:C (1:3 dan 5:3), variasi massa adsorben, variasi konsentrasi limbah simulasi menggunakan metode spektrofotometri. Hasil penelitian menunjukkan bahwa SiC dapat digunakan sebagai adsorben karena terdapat pori-pori pada struktur permukaan. Variasi rasio adsorben SiO2:C optimum dalam mengadsorpsi amonium ialah SiC 136 dengan amonium teradsorpsi sebanyak 45% dan kapasitas adsorpsi sebesar 0,47 mg/g. Massa adsorben optimum dalam mengadsorpsi amonium ialah 0,1 g dengan amonium teradsorpsi 41,77%. Konsentrasi optimum limbah simulasi dalam adsorpsi amonium 20 mg/L dengan amonium teradsorpsi 46,25%. Pola isoterm adsorpsi selama proses adsorpsi amonium mengikuti isoterm Freundlich, yang berarti proses adsorpsi cenderung terjadi secara fisika. Kata kunci: adsorben, adsorpsi, amonia, biomassa, sabut kelapa, SiC
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Choi, Hee-Jeong. "Assessment of sulfonation in lignocellulosic derived material for adsorption of methylene blue." Environmental Engineering Research 27, no. 3 (May 13, 2021): 210034–0. http://dx.doi.org/10.4491/eer.2021.034.

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The lignocellulosic derived cornstalk was sulfonated (SCS) to prepare an adsorbent, and cationic dye methylene blue (MB) was adsorbed using SCS to evaluate its usability. Sulfonation improved the number of carboxyl groups (-COOH) and increased the porosity and surface area of carbon. In the adsorption process in which MB is adsorbed using SCS in aqueous solution, the sulfone group expanded the form of the sulfonated adsorbent to increase the exposure of anions (sulfonic-acid (R-SO3H), carboxylic groups, and bonded OH-group) to the surface. As a result, the adsorption efficiency of MB, a cationic dye for SCS, was improved. The results of kinetics, adsorption isotherm and thermodynamics were suitable for Pseudo-2nd-order and Langmuir, and the adsorption process was endothermic and spontaneous physical adsorption. The maximal adsorptions capacity with Langmuir model was found to be 504.3 mg/g at 293K. Sulfonation improved not only electrostatic interaction but also π-π stacking in the adsorption process, which was very advantageous in adsorbing cationic dyes using lignocellulose-based adsorbents.
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Arai, Y., S. Watanabe, S. Ohno, M. Nakamura, A. Shibata, F. Nakamura, T. Arai, et al. "Analysis on adsorbent for spent solvent treatment by micro-PIXE and EXAFS." International Journal of PIXE 29, no. 01n02 (January 2019): 17–31. http://dx.doi.org/10.1142/s0129083519500128.

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The spent PUREX solvent containing U and Pu is generated from the reprocessing process of spent nuclear fuel. The nuclear material removal is important for the safe storage or disposal of the spent solvent. Our previous study revealed that the adsorbent with the iminodiacetic acid (IDA) functional group is one of the most promising materials for designing the nuclear material recovery process. Accordingly, an IDA-type adsorbent was synthesized by using graft polymerization technology or a chemical reaction to improve the adsorption rate and capacity. The synthesized IDA-type adsorbent was characterized by micro particle-induced X-ray emission (PIXE) and extended X-ray absorption fine structure (EXAFS) analyses. The micro-PIXE analysis revealed that Zr was adsorbed on the whole synthesized adsorbents and quantified the microamount of adsorbed Zr. Moreover, EXAFS suggested that Zr in the aqueous solution and solvent can be trapped by the IDA group with different mechanisms.
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Bae, Min A., Kyeong Ho Kim, and Jae Ho Baek. "Effect of Inorganic Additives and Sintering Temperature on Adsorbents." Korean Journal of Metals and Materials 60, no. 3 (March 5, 2022): 244–50. http://dx.doi.org/10.3365/kjmm.2022.60.3.244.

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Magnesium silicate is a porous material with a large specific surface area and is easily adsorbed. In particular, it is widely used commercially because it is very effective for adsorbing Na+, K+ ions and other catalysts. However, if the powder is used as an adsorbent as is, there are disadvantages, in that the adsorbed material is easily lost during the adsorption action and becomes difficult to recover. In this study, magnesium silicate was used as an adsorbent to remove pollutants (CO2) from the atmosphere. In addition, in order to overcome the disadvantages of using a powder adsorbent material, an inorganic binder (clay) and a reinforcing agent (glass fiber) were added to prepare a molded article which imparted strength to the adsorbent material. Changes in the properties of the adsorbent were confirmed. Changes in the physicochemical properties of the adsorbed material according to the calcination temperature, from 400 to 800°C, were confirmed. In addition, it was confirmed that a molded body with 15 wt% inorganic binder and 4 wt% reinforcing agent had a specific surface area of about 87 m²/g and a strength of 4.63 N. The prepared molded article could adsorb about 0.41 mmol/g of CO2 at atmospheric pressure, confirming its potential use as a CO2 adsorbent.
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Zhu, Lin, Mei Na Liang, and Dao Lin Huang. "The Research Progress on New Adsorbent of Dealing with Heavy Metal Pollution in Water." Advanced Materials Research 1065-1069 (December 2014): 1969–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1969.

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With the increasing of industrialization, the heavy metals cause serious pollution of water in China. This paper reviewed the study of many kinds of new adsorbent materials remove heavy metal from pollution water, these new adsorbent including modification activated carbon, inorganic absorbent material, industrial waste, biological adsorbents and synthetic adsorbent, and pointed out the trend of development of the new adsorbent material application in the future.
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Hofman, Magdalena, and Robert Pietrzak. "Nitrogen-Doped Carbonaceous Materials for Removal of Phenol from Aqueous Solutions." Scientific World Journal 2012 (2012): 1–8. http://dx.doi.org/10.1100/2012/297654.

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Carbonaceous material (brown coal) modified by pyrolysis, activation, and enrichment in nitrogen, with two different factor reagents, have been used as adsorbent of phenol from liquid phase. Changes in the phenol content in the test solutions were monitored after subsequent intervals of adsorption with selected adsorbents prepared from organic materials. Significant effect of nitrogen present in the adsorbent material on its adsorption capacity was noted. Sorption capacity of these selected materials was found to depend on the time of use, their surface area, and pore distribution. A conformation to the most well-known adsorption isotherm models, Langmuir, and Freundlich ones, confirms the formation of mono- and heterolayer solute (phenol) coverage on the surface of the adsorbent applied herein. The materials proposed as adsorbents of the aqueous solution contaminants were proved effective, which means that the waste materials considered are promising activated carbon precursors for liquid phase adsorbents for the environmental protection.
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MOSOARCA, Giannin, Cosmin VANCEA, Simona POPA, Sorina BORAN, and Maria Elena RADULESCU‑GRAD. "Equilibrium Study Regarding Crystal Violet Dye Adsorption on Raspberry Leaves Powder." Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science 45, no. 2 (June 15, 2022): 38–44. http://dx.doi.org/10.35219/mms.2022.2.07.

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This work focuses on the crystal violet removal from aqueous solution using raspberry leaves powder as adsorbent materials. SEM and colour analyses were used to characterize the adsorbent surface. The influence of pH, adsorbent dose and initial dye concentration was studied. Equilibrium modeling was performed to characterize the adsorption process and to determine the maximum adsorption capacity. Sips isotherm characterizes the adsorption and the maximum adsorption capacity, 264.5 (mg/g) was better compared with other similar adsorbents. The obtained results indicate that adsorbent material, obtained from raspberry leaves, is very suitable to be used for crystal violet removal from aqueous solutions.
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Salam, M. Abdus, Suriati Sufian, and Thanabalan Murugesan. "Hydrogen Storage Investigation of Fixed Bed of Nanocrystalline Mg-Ni-Cr Mixed Oxides." Advanced Materials Research 701 (May 2013): 179–83. http://dx.doi.org/10.4028/www.scientific.net/amr.701.179.

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nanocrystalline mixed oxides containing magnesium, nickel and chromium (MNCM) have been synthesized as an adsorbent using coprecipitation method and showed its reversible hydrogen storage capacity at ambient conditions using fixed bed. XRD and ICP-MS analyses ensured the adsorbents phase and homogeneity. The microstructure of mixed oxide has been investigated using FESEM and BET and TEM technique respectively. The adsorbent consisted of mesoporous surface with a surface area of 254-370 m2gm-1and SAED pattern showed that the adsorbents are poly-crystalline. The mixed oxides exhibited a 3.2 wt% H2storage capacity and release 57% of adsorbed H2. Adsorption enthalpy (H) and entropy (S) change of-27.58 kJ/mol and-70.21 J/mol.K are indicating favorable thermodynamics for reversible hydrogen storage material.
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Schwantes, Daniel, Affonso Celso Gonçalves, Gustavo Ferreira Coelho, Marcelo Angelo Campagnolo, Douglas Cardoso Dragunski, César Ricardo Teixeira Tarley, Alisson Junior Miola, and Eduardo Ariel Völz Leismann. "Chemical Modifications of Cassava Peel as Adsorbent Material for Metals Ions from Wastewater." Journal of Chemistry 2016 (2016): 1–15. http://dx.doi.org/10.1155/2016/3694174.

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Residues from the processing of cassava roots (Manihot esculentaCrantz), or cassava peels, are evaluated as chemically modified adsorbents with H2O2, H2SO4, and NaOH, in the removal of metal ions Cd(II), Pb(II), and Cr(III) from contaminated water. Modified adsorbents were chemically characterized for their chemical composition andpHPZC(point of zero charge), while adsorption tests determined the best conditions of pH, adsorbent mass, and contact time between adsorbent and adsorbate in the process of removal of the metal ions. Isotherms obtained from the preliminary results were linearized by Langmuir’s and Freudlich’s models. The thermodynamic parameters, such asΔH,ΔG, andΔS, were also evaluated. The modifying solutions proposed were effective in the modification of adsorbents and resulted in high capacity sorption materials. Equilibrium time between adsorbent and adsorbate for the solutions contaminated with metals is about 40 minutes. The Langmuir model adjusted to most results, indicating monolayers adsorption of Cd(II), Pb(II), and Cr(III). The values obtained for LangmuirQmshow a higher adsorption capacity caused by chemical modifications, with values such as 19.54 mg Cd(II) per g of M. NaOH, 42.46 mg of Pb(II) per g of M. NaOH, and 43.97 mg of Cr(III) per g of M H2O2. Results showed that modified cassava peels are excellent adsorbent, renewable, high availability, and low-cost materials and a feasible alternative in the removal of metals in industries.
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Nhung, Nguyen Thi Hong, Vo Dinh Long, and Toyohisa Fujita. "A Critical Review of Snail Shell Material Modification for Applications in Wastewater Treatment." Materials 16, no. 3 (January 27, 2023): 1095. http://dx.doi.org/10.3390/ma16031095.

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Sea material is becoming increasingly popular and widely used as an adsorbent in wastewater treatment. Snail shell, a low-cost and natural animal waste material, has been shown to have a high calcium content (>99%) and a large potential surface area for the development of sustainable adsorbents. This paper presents a novel synthesis of methods for using snail shell absorbent materials in the treatment of wastewater containing heavy metals, textile dyes, and other organic substances. Modified biochar made from snail shells has gained popularity in recent years due to its numerous benefits. This paper discusses and analyzes modification methods, including impregnating with supplements, combining other adsorbents, synthesis of hydroxyapatite, co-precipitation, and the sol–gel method. The analysis of factors influencing adsorption efficiency revealed that pH, contact time, temperature, initial concentration, and adsorbent dose all have a significant impact on the adsorption process. Future research directions are also discussed in this paper as a result of presenting challenges for current snail adsorbents.
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Dissertations / Theses on the topic "Adsorbent material"

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Ward, Ross Ritchie. "Keratin adsorbent material for chemical protective clothing." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/19516/.

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Wool is potentially a valuable adsorbent that has been used for the depletion of airborne gas molecules. The aim of the research is to modify the complex hierarchical structure of wool fibres to form a reticulated internal porous structure within the fibre in order to ultimately enhance the adsorption capacity of wool and/or its composite fibres. In this study, the effects of several chemical treatments and their combinations on the formation of porous microstructure within wool fibres are studied. The techniques studied include oxidation (Formic acid treatment), oxidation/swelling (Ozone treatment in urea hydrogen peroxide solution) and education treatments (Sodium hydroxide treatments) and their combinations. Mesopore and macropore formations were evident after wool fibres and fabrics were treated with individual and consecutive chemical treatments. However, the pore formations after these chemical treatments did not produce materials with specific surface areas comparable to activated carbon. Despite this shortcoming there was evidence of both accessible and inaccessible pore formations within wool fibres. Additional physical selective degradation of raw and chemically modified wool fibres by using both electron beam irradiation using SEM and low pressure oxygen plasma irradiation treatments were identified to expand accessible pores or expose inaccessible pores formed within wool fibres after chemical treatment. Porous wool fibres with reticulated pore structures were evident after exposing the chemical pretreated wool fibres to low pressure plasmas. To enhance the adsorption capacity of the porous wool fibres formed, novel wool aerogel composite wool fibres have been developed. The resultant composite fibres were capable of adsorbing cyclohexane with up to 2.5 w/w% uptake. Also, similar uptakes were evident after testing without any sample pre-heating process. This demonstrates that wool-aerogel composite fabrics are capable of adsorbing VOCs at conditions similar to environments present during the use of CPC.
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Thorpe, Roger. "Heat transfer by forced convection in beds of granular adsorbent material for solid sorption heat pumps." Thesis, University of Warwick, 1996. http://wrap.warwick.ac.uk/34618/.

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A novel adsorption cycle in which enhanced heat transfer between the adsorbent and external heat sinks and sources is achieved by forced convection of refrigerant gas through the adsorbent bed is presented This cycle is further developed by the use of inert beds to store the heat of desorption and sensible heat between phases. The performance and utility of such a cycle will depend on the heat transfer coefficients and pressure drops that result when the refrigerant gas is circulated through the beds The heat transfer and pressure drop characteristics of a bed of granular active carbon were investigated using argon, carbon dioxide and ammonia. Equipment was designed and built to pass a stream of gas through a bed at a controlled rate, pressure and temperature. The pressure drop characteristic was found to conform to Ergun equation and the constants for the application of that relation to a commonly available granular active carbon established. A mathematical model based on a finite difference technique was created and used to predict the progress of a temperature front in the bed and derive the heat transfer characteristics from experimental data. Heat transfer coefficients measured with argon and ammonia appeared inconsistent with each other and after investigations of the data and comparison with established correlations were made it was concluded that carbon during the argon experiments had been contaminated. The heat transfer results with ammonia and carbon were compared with a modified version of the Colburn analogy between heat transfer and pressure loss. A correlation between the Nusselt number and Reynolds number for design purposes was established.
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Tyburce, Bernard. "Application de l'échange ionique à la caractérisation des zéolithes." Poitiers, 1987. http://www.theses.fr/1987POIT2036.

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Bahamón, García Daniel. "New generation adsorbents for gas separation: from modeling to industrial application." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/325690.

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Teniendo en cuenta el rápido aumento de la población y el crecimiento en el consumo de energía como consecuencia de grandes progresos en transporte y tecnología, el desarrollo sostenible es de especial relevancia pues sugiere la búsqueda de formas de mitigar las emisiones de gases de efecto invernadero, incluyendo la captura y almacenamiento de carbono (o utilización), la eficiencia energética, fuentes alternativas de energía y ahorro de energía, como ya se ha sugerido por el protocolo de Kioto y los informes del IPCC. De ahí que en los últimos años se haya dedicado un esfuerzo considerable a desarrollar tecnologías para la captura y almacenamiento de CO2 a partir de fuentes concentradas de emisión. Además de establecer nuevas tecnologías, durante las últimas décadas la ciencia de materiales sólidos porosos se ha convertido en una de las áreas más intensas de investigación y desarrollo para químicos, físicos y científicos de materiales. De hecho, se ha avanzado considerablemente en el desarrollo de nuevos adsorbentes para diversos procesos de separación. Por ejemplo, las estructuras órgano-metálicas (MOFs) han ido ganando considerable atención como materiales prometedores para aplicaciones de almacenamiento y separación de gases, debido a sus propiedades excepcionales. Sin embargo, es necesaria una comprensión a nivel molecular de la adsorción de gases para acelerar el diseño y desarrollo de aplicaciones a la carta. También es fundamental conocer el comportamiento bajo condiciones de humedad e impurezas, como se tiene normalmente en aplicaciones industriales específicas. El trabajo desarrollado en esta Tesis Doctoral destaca el uso de técnicas de simulación molecular para la optimización de procesos relacionados con el medio ambiente. El objetivo general se centra en avanzar en el campo de materiales para la captura y separación de dióxido de carbono a condiciones de proceso. Se considera de manera explícita la influencia del vapor de agua e impurezas, tanto a la luz de los fundamentos de la adsorción como en la aplicación para la captura de CO2 por post-combustión mediante ciclos de adsorción por oscilación. Partiendo de una breve descripción de los fundamentos de la adsorción y de las simulaciones moleculares, se presenta una revisión exhaustiva de estudios recientes de materiales para captura y separación de CO2, proporcionando así información valiosa para su aplicación industrial. Basados en esta revisión, se han estudiado en detalle algunos de los materiales más prometedores para un proceso de adsorción por cambio de temperatura (TSA) basado en simulaciones moleculares, proponiéndose un nuevo procedimiento para la evaluación y optimización de los sistemas de captura en condiciones reales. Dada la gran influencia de trazas de agua en la separación, se investiga también el CuBTC (uno de los MOF más estudiados y estables en agua) en comparación con la zeolita de referencia 13X. Se examina en detalle el efecto de las especies coexistentes, así como la influencia del agua y SO2 en los gases de combustión, con el fin de llegar a una mejor comprensión de la capacidad de adsorción, la selectividad, la localización de las moléculas en el material, las distribuciones de calor isostérico y su relación con el proceso. Asimismo, se han llevado a cabo estudios paramétricos detallados para una investigación comparativa de la separación de mezclas multi-componentes de gases de combustión mediante el uso de otras zeolitas como caolinita y chabacita. Y finalmente, se presenta un trabajo adicional relacionado con otro problema medioambiental: la separación de un contaminante (ibuprofeno) en agua, mediante el uso de carbones activados, usando las mismas técnicas computacionales, demostrando así la versatilidad de las herramientas empleadas para este tipo de sistemas.
Given the rapid increase in population and the growth in energy consumption as a consequence of major developments in transportation and technology, sustainable development is of special relevance, suggesting ways to mitigate greenhouse gases emissions, including carbon capture and storage (or utilization, CCSU), energy efficiency, alternative energy sources and energy savings, as already suggested by the Kyoto’s Protocol and the IPCC reports. Hence, much effort has been devoted in recent years to develop technologies for capture and storage of CO2 from concentrated sources of emission. Apart from establishing new technologies, over the last decades the science of porous solid materials has become one of the most intense areas of research and development for chemists, physicists, and materials scientists. In fact, considerable progress has been made in recent years on the development of novel adsorbents. For instance, Metal Organic Frameworks (MOFs) have been gaining considerable attention as promising nanoporous materials for gas storage and gas separation applications due to their exceptional physical and chemical properties, and have already been demonstrated to be promising materials in the separation of different gases, however, a molecular level understanding of gas adsorption in the pores is crucial to accelerate the design and development of these and other applications. It is also fundamental to know their behavior under moisture conditions and impurities content, as normally found at specific industrial applications. The work developed in this Thesis highlights the use of molecular simulation techniques for optimizing environmental related processes, providing new procedures to assess the use of these materials from their fundamental knowledge until their applications at industrial conditions. The overall objective is to advance in the field of materials for CO2 capture and separation at process conditions. The influence of water vapor and impurities is explicitly considered, both, in the light of the fundamentals of adsorption and in the application for post-combustion carbon dioxide capture by swing adsorption cycles. Starting from a brief description of the fundamentals of adsorption and molecular simulations, a novel throughout review on recent studies of materials for CO2 capture and separation is presented, thus providing valuable information to assess their industrial application. Based on this review, some of the most promising materials for CO2 separation in a Temperature Swing Adsorption (TSA) process have been studied in detail by using molecular simulations (compared to experimental data when available), proposing a new process for the evaluation and optimization capture systems under real conditions. In addition, given the great influence of water as a trace compound on the separation, CuBTC (one of the most studied MOFs, stable in water and with potential for industrial application) has been investigated in comparison to the benchmark zeolite 13X. The effect of the coexisting species as well as the influence of water and SO2 in flue gas is examined in detail in order to reach a better understanding of the adsorption capacity, selectivity, adsorption density location and isosteric heat distributions. And finally, detailed parametric studies have been carried out for a comparative computational investigation for separating of multi-component mixtures of flue gas by using other representative zeolites such as kaolinite and chabazite. Additional work, related to another environmental problem: the separation of a pollutant (ibuprofen) in water, by using activated carbons, is also presented here, demonstrating the versatility of the tools used for these types of systems.
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Su, Lingcheng. "Soil contamination and plant uptake of metal pollutants released from Cu(In, Ga)Se₂ thin film solar panel and remediation using adsorbent derived from mineral waste material." HKBU Institutional Repository, 2018. https://repository.hkbu.edu.hk/etd_oa/552.

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The Cu(In,Ga)Se2 (CIGS) thin-film solar panels (TFSPs) are widely used in integrated photovoltaic (PV) and solar power systems because of their perfect PV characteristics and ductility. However, the semiconductor layers of these panels contain potentially toxic metals. In this study, the potential environmental pollution arisen by CIGS TFSP treated as construction trash at the end of their useful life was examined. Acid extraction was used to simulate leaching toxicity followed by burying CIGS TFSP material in different soils, namely a synthetic soil, a Mollisol, and an Oxisol, to determine whether metal pollutants might be released into the soil. A vegetable, Brassica parachinensis L. H. Bariley (VegBrassica), was selected to grow in these polluted soils to investigate the uptake of metals and their bioaccumulation. The simulative remediation of contaminated soils was carried out using a remediation module created by the combination of activated carbon and modified mineral waste material (MMWM) in this research. The activated carbon derived from the waste biomass material was produced by an environmental friendly method, and the MMWM was obtained through a thermal dehydroxylation treatment. The physiochemical properties of MMWM, with focusing on mineral phase transformation, were related to the changes in surface morphology due to dehydroxylation occurred during the process of thermal treatment of MMWM samples, and the adsorption performances of metal (lead, Pb) and organic compound (methyl orange, MO) onto this newly modified MMWM were studied. Furthermore, an end-of-life treatment method was designed and proposed for harmless disposal of CIGS TFSP. Various metals, including Pb, zinc (Zn), nickel (Ni), chromium (Cr), gallium (Ga), copper (Cu), indium (In) and aluminum (Al) were found to be released into the soil and caused contamination when scrapped end-of-life CIGS TFSP were buried, and the rates of metal release changed with the variations of both the amounts of CIGS TFSP material in the soil and the soil properties. The increases in concentrations of heavy metals such as Zn, Cu, Ni, Ga, Pb, In, and Cr were correlated with the amounts of CIGS TFSP material added in soils. The Pollution Index and the Nemerow Contamination Index calculated from our results confirmed that, when buried, the CIGS TFSP material polluted the soil. Plants grew well in the synthetic soil and the Mollisol, but those in the Oxisol showed prominent signs of chlorosis and died after 30 days. The bioaccumulation factor (BF) and concentration of Zn were 3.61 and 296 mg/kg, respectively in VegBrassica grown in the synthetic soil with 10% (200 g to 2 kg of soil) of added CIGS TFSP, while the BF and concentration of In were 3.80 and 13.72 mg/kg, respectively in VegBrassica grown in the Mollisol, indicating that bioaccumulation occurred. The thermally treated MMWM samples showed morphological transformation mainly on surface based on the scanning electron microscopy (SEM) observations, and an increasing trend in BET specific surface area (SSA) from 120 to 500 ℃ followed by a decreasing trend up to 1000 ℃. Thermal modification had successfully improved Pb adsorption capacity up to 515 mg/g, corresponding to MMWM modified at 600 ℃ with an SSA of 6.5 m2/g. The MO adsorption capacity was also improved after thermal treatment of MMWM, which performed the best adsorption of 87.6 mg/g at 400 ℃. The adsorption of Pb and MO were mainly chemisorption and monolayer coverage, as pseudo-second-order model and Langmuir equation displayed good relationships of correlation for Pb and MO adsorption data. It is therefore indicated that the newly designed soil remediation modules could significantly remove metals from the contaminated soils. In summary, c
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Hendricks, Nicolette Rebecca. "The application of high capacity ion exchange adsorbent material, synthesized from fly ash and acid mine drainage, for the removal of heavy and trace metal from secondary Co-disposal process waters." Thesis, University of the Western Cape, 2005. http://hdl.handle.net/11394/1455.

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In South Africa, being the second largest global coal exporter, coal mining plays a pivotal role in the growth of our economy, as well as supplying our nation’s ever increasing electricity needs; while also accounting for more than 10% of the 20 x 109 m3 water used annually in the country. Coal mining may thus be classified as a large-scale water user; known to inevitably generate wastewater [acid mine drainage (AMD)] and other waste material, including fly ash (FA). Current and conventional AMD treatment technologies include precipitation–aggregation (coagulation/flocculation) – settling as hydroxides or insoluble salts. The process stream resulting from these precipitation processes is still highly saline, therefore has to undergo secondary treatment. The best available desalination techniques include reverse osmosis (RO), electro dialysis (ED), ion exchange and evaporation. All available treatment methods associated with raw AMD and its derived process stream fall prey to numerous drawbacks. The result is that treatment is just as costly as the actual coal extraction. In addition, remediation only slows the problem down, while also having a short lifespan. Research conducted into converting fly ash, an otherwise waste material, into a marketable commodity has shown that direct mixing of known ratios of FA with AMD to a pre-determined pH, erves a dual purpose: the two wastes (AMD and FA) could be neutralized and produced a much cleaner water (secondary co-disposal [FA/AMD]-process water), broadly comparable to the process water derived from precipitation-aggregation treated AMD. The collected post process solid residues on the other hand, could be used for production of high capacity ion exchange material (e.g. zeolite A, faujasite, zeolite P, etc.). The produced ion exchange material can subsequently be utilized for the attenuation of metal species in neutralized FA/AMDprocess waters.
Magister Scientiae - MSc
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Mendes, Marcia Felipe. "Estudo da typha angustifolia l. como material vegetal adsorvente para a remoção dos agrotóxicos trifluralina, clorpirifós e α-endossulfam de meio aquoso." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/6227.

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Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG
Because of the toxicological relevance of pesticides introduced into the environment through agricultural practices, it is necessary to develop simple methodologies with low cost, enabling remove these pollutants from the environment, in particular of water intended for human consumption. The adsorption process is an efficient and low cost technique that have wide application. The adsorbent capacity of the leaves of Typha angustifolia L. herbaceous perennial plant belonging to the family Typhaceae, in Brazil it is also popularly known as taboa, was investigated for the removal of pesticides trifluralin, chlorpyrifos and α-endosulfan from aqueous medium. The the analytical method using solid phase extraction (SPE) and chromatography with electron capture detector (GC/ECD) was optimizates and validate. The validation criterions were reached and the analytical methos was considered efficient for trifluralin, chlorpyrifos and α-endosulfan quantification in an aqueous medium, providing credibility to the results obtained in the adsorption experiments. The adsorption capacity of T. angustifolia was evaluated under different parameters: treatment of the material, amount of material, contact time between the plant material and the pesticides solution and concentration of the pesticides solution. The results showed that treatment of the material with distilled water and was satisfactory and, for all doses evaluated the pesticide removal was efficient, with best results obtained at a dose of 3.0 g L-1 , equivalent to 60 mg of adsorbent in 20.0 mL of solution, in which the pesticide removal were between 73 and 80%. The adsorption kinetics of the pesticide by T. angustifolia showed that the adsorption equilibrium was reached in 40 minutes for all pesticides, removing up to 90% and using a very small amount of plant material (3 g L-1 ). The experimental data were evaluated using the kinetic models of pseudo-first order, pseudo-second order and Avrami. One of the limitations encountered in the concentration influence study is the limited solubility of the agrochemical in aqueous medium (between 0.33 and 1.00 mg L-1 ), resulting in the study of a small concentration range in the adsorption experiments. To study the pesticides adsorption mechanism by T. angustifolia material, the experimental data were applied to Langmuir, Freundlich and Sips non-linear isotherms models. Additional tests showed that the adsorption capacity is unaffected when using natural water in the adsorption experiments. The results indicate that the material obtained from of T. angustifolia leaves, has a great potential to be used as an alternative adsorbent material in pesticide contaminated aqueous solution treatment.
Devido à relevância toxicológica dos agrotóxicos introduzidos no ambiente através de práticas agrícolas, torna-se necessário o desenvolvimento de metodologias simples e de baixo custo, que permitam remover esses poluentes do meio ambiente, em especial, das águas destinadas a consumo humano. O processo de adsorção é uma técnica que possui grande aplicação, por ser eficiente e de baixo custo. A capacidade adsorvente das folhas de Typha angustifolia L., planta herbácea perene pertencente à família Typhaceae, no Brasil também conhecida popularmente como taboa, foi investigada para a remoção dos agrotóxicos trifluralina, clorpirifós e α-endossulfam de meio aquoso. Foi realizada a otimização e validação da metodologia analítica de extração em fase sólida (SPE) e determinação por cromatografia gasosa utilizando-se o detector por captura de elétrons (GC/ECD). A metodologia (SPEGC/ECD) atendeu aos critérios de validação estabelecidos e foi eficiente para a quantificação dos agrotóxicos em meio aquoso, fornecendo credibilidade aos resultados obtidos nos ensaios de adsorção. A capacidade de adsorção da T. angustifolia foi avaliada sob diferentes parâmetros: tratamento do material, dose de material, tempo de contato entre o material vegetal e a solução dos agrotóxicos e concentração dos agrotóxicos na solução. Os resultados obtidos mostraram que o tratamento do material com água destilada foi satisfatório e que para todas as doses de adsorvente avaliadas a remoção dos agrotóxicos foi eficiente, sendo obtido um melhor resultado para a dose de 3,0 g L-1 , equivalente a 60 mg de adsorvente para 20,00 mL de solução, onde se obteve remoção entre 73 e 80% dos agrotóxicos. O estudo cinético do processo de adsorção dos agrotóxicos pela T. angustifolia mostrou que o equilíbrio de adsorção foi alcançado em 40 minutos, para todos os agrotóxicos, com remoção de até 90%, utilizando uma dose muito pequena de material vegetal (3 g L-1 ). Os dados experimentais foram avaliados utilizando-se os modelos cinéticos de pseudo-primeira ordem, pseudo-segunda ordem e Avrami. Uma das limitações encontradas no estudo da influência da concentração foi a solubilidade limitada dos agrotóxicos em meio aquoso (entre 0,33 e 1,00 mg L-1 ), que fez com que os ensaios de adsorção fossem avaliados para uma pequena faixa de concentração. Para estudar o mecanismo de adsorção dos agrotóxicos pelo material T. angustifolia, os dados experimentais foram aplicados aos modelos não lineares de Langmuir, Freundlich e Sips. Ensaios adicionais mostraram que a capacidade de adsorção é pouco afetada quando se utiliza água natural obtida em represas nos ensaios de adsorção. Os resultados obtidos indicam que o material vegetal, obtido a partir das folhas de T. angustifolia, possui um grande potencial para ser utilizado como material adsorvente alternativo no tratamento de meio aquoso contaminado com os agrotóxicos trifluralina, clorpirifós e α-endossulfam.
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Carpentier, Pascal. "Etude de la sorption des oxydes de soufre par des masses regenerables a base d'oxyde de magnesium." Paris 6, 1987. http://www.theses.fr/1987PA066296.

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L'adsorption des oxydes de soufre par des masses regenerables a ete etudiee. Ces travaux s'inscrivent dans le cadre de la mise au point d'un procede de desulfuration de divers effluents de raffineries petrolieres sur une masse composee de 30% d'oxyde de magnesium associe a de l'alumine et dopee par 50 ppm de platine
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9

Behra, Philippe. "Etude du comportement d'un micropolluant metallique (le mercure) au cours de sa migration a travers un milieu poreux sature : identification experimentale des mecanismes d'echanges et modelisation des phenomenes." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13120.

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López-Aranguren, Oliver Pedro. "Functionalized adsorbent materials using supercritical CO2." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/284975.

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La silica (SiO2) porosa es uno de los adsorbentes históricamente más utilizado a nivel industrial en multitud de procesos. Sin embargo, el crecimiento acelerado de la demanda de nuevos materiales basados en nanotecnología y de nuevos procesos límpios y sostenibles ha hecho necesario el desarrollo de adsorbentes con nuevas o mejores propiedades fisico-químicas. Una de las opciones más empleadas para modificar la silica porosa es la incorporación de moléculas orgánicas con grupos funcionales dando lugar a materiales híbridos en los que se combinan las propiedades de ambos componentes. En esta tesis doctoral, se ha optado por el uso de dióxido de carbono supercrítico (scCO2) como disolvente para llevar a cabo ésta funcionalización. Estos procesos supercríticos, diseñados como sostenibles, actúan como sustitutos de técnicas convencionales que emplean disolventes orgánicos. En esta tesis se ha trabajado principalmente con matrices de sílica amorfa de poros structuralmente ordenados (MCM-41, 4 nm) y de poros desordenados (silica gel, 4-9 nm), analizándose sólo marginalmente las propiedades conferidas mediante la funcionalización a matrices cristalinas microporosas tipo zeolitas. Como agentes funcionalizantes, se han estudiado alkyl- y aminosilanos (octiltrietoxisilano y (methylamino)propyltrimethoxysilane ) y la aziridina que mediante una reacción de polimerización catalizada por CO2 forma la polietilenimina (PEI) dentro de los poros de la sílica, dando lugar a una red polimérica hiper-ramificada de grupos amino. Se trata de un método novedoso que únicamente requiere CO2 comprimido como reactivo y catalizador de la reacción de polimerización de la aziridina, que habitualmente requiere el empleo de disolventes orgánicos, catalizadores sólidos, altas temperaturas y largos tiempos de reacción. La funcionalización de silica porosa con aminosilanos en scCO2 es de mayor complejidad que en el caso de los alquilsilanos, ya que la alta reactividad entre los grupos amino y el CO2 da lugar a la formación de carbamatos insolubles en scCO2. Sin embargo, la reacción de formación de carbamatos pudo ser parcialmente inhibida mediante el control de la presión y la temperatura del medio de reacción. Los materiales obtenidos se han caracterizado mediante técnicas de estado sólido: adsorción de N2 a baja temperatura, análisis térmico, espectroscopia de infrarojo, método de tritación de Karl-Fischer, difracción de rayos X, espectrometría de masas por MALDI-ToF y difracción de luz estática. No obstante, también se han empleado técnicas de modelado y simulación molecular como herramientas complementarias, que permiten el estudio de estos sistemas de adsorción complejos con mayor nivel de detalle. La cadena alquílica del alkylsilano confiere al sistema poroso propiedades hidrofóbicas, preparándose de esta manera materiales útiles en la adsorción de aceites. La funcionalización con moléculas orgánicas que presentan el grupo amino ha permitido la preparación de materiales utilizados en procesos de adsorción y separación de CO2 en mezclas diluidas de gases (secuestro de CO2). Las propiedades adsorbentes de CO2 de las aminosílicas sintetizadas han sido evaluadas combinando técnicas experimentales de adsorción con simulaciones moleculares. La caracterización de estos materiales se basa en la evaluación de propiedades tales como la capacidad total de adsorción de CO2 y la influencia de la temperatura, la selectividad en la adsorción de CO2 en mezclas de gases, la estabilidad en la adsorción/desorción por ciclos y las cinéticas de estos procesos que han sido determinadas mediante tanto medidas termogravimétricas como mediante isotermas de adsorción de CO2 a diferentes temperaturas.
Historically, porous silica (SiO2) is one of the most used adsorbents for a wide variety of processes in the industry. However, the fast grown on the demand of new nanotechnology based materials and sustainable green processes have made necessary the development of adsorbents with improved physico-chemical properties. One of the most applied options to modify porous silica is the incorporation on the surface of organic functional molecules, giving place to hybrid materials, in which the properties of both components are combined. In this doctoral thesis, supercritical carbon dioxide (scCO2) has been used as the solvent to carry out the functionalization processes. Carbon dioxide is a sustainable solvent and its use has been preferred in front of toxic organic liquid solvents, often applied in the traditional methods of synthesis. Amorphous silica matrices with structural ordered pores (MCM-41, 4 nm) and disordered pores (silica gel, 4-9 nm) were selected for the functionalization processes. Besides, the properties conferred by functionalization to microporous crystaline zeolites have been preliminary studied. The modifying agents applied in this thesis were either alkyl (octyltriethoxysialane) or amino (methylaminopropyltrimethoxisilane) silane and aziridine. The later compound is a monomer which polymerizes in presence of CO2, leading to hyperbranched polyethyleneimine (PEI) with multiple amino groups formed into the silica pores. This novel method only requires compressed CO2 as the reagent and the catalyst of the polymerization reaction of aziridine, which usually requires the use of organic solvents, a solid catalyst, high temperatures and long processing times. The functionalization of porous silica with aminosilane in scCO2 is more complex than the case of alkysilanes due to the high reactivity between amino groups and CO2 to form unsoluble carabamate species. However, in this study a protocol was designed to partially inhibit carabamate formation by controlling the pressure and temperature of the reaction media. The obtained materials were characterized using solid state characterization tools: low temperature N2 and CO2 adsorption, thermal analysis, infrared spectroscopy and X-Ray diffraction. Moreover, modeling and simulation methods were used as complementary tools that allowed the study of this complex systems with a high level of detail. The alkyl chain of the alkylsilane induced to the porous system a hydrophobic behavior, hence, obtaining materials candidates for oil adsorption. The functionalization with organic molecules containing the amino group allowed the preparation of materials for the adsorption and separation of CO2 from diluted gases (CO2 sequestration). The CO2 adsorption properties of the synthesized aminosilicas were evaluated combining experimental adsorption tools with molecular simulations. The characterization of these materials was based on the evaluation of the overall CO2 adsorption capacity and the influence of the temperature, the selectivity of the CO2 adsorption in gas mixtures, the stability in the cyclic adsorption/desorption process and the kinetics, which were determined by performing both microbalance and CO2 adsorption isotherms at different temperatures.
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Books on the topic "Adsorbent material"

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Smith, Erika. Inorganic microporous adsorbent materials. Norwalk, CT: Business Communications Co., 1997.

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Pattārit, Khongsak. Rāingān kānwičhai kānphalit tūa dūtsap lōha nak čhāk watsadu thammachāt: Production of heavy metal adsorbent from natural material / Khongsak Pattarit ; Sathāban Rātchaphat Phra Nakhō̜n Sī ʻAyutthayā. [Ayutthaya]: Khana Witthaȳasāt læ Theknōlōyī, Sathāban Rātchaphat Phra Nakhō̜n Sī ʻAyutthayā, 2001.

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Wright, Bob W. Supercritical fluid extraction of particulate and adsorbent materials. Research Triangle Park, NC: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1986.

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Wright, Bob W. Supercritical fluid extraction of particulate and adsorbent materials. Research Triangle Park, NC: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1986.

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McLean, Stuart. The density of adsorbing materials. [Toronto]: University Library, pub. by the Librarian, 1996.

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Lindsay, Yvonne M. Reduction in the thrombogenicity of biomaterials using contrasting adsorbed proteins. Dublin: University College Dublin, 1996.

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H. W. J. P. Neomagus. Bio-polymeric heavy metal adsorbing materials for industrial wastewater treatment: Report to the Water Research Commission. Gezina: Water Research Commission, 2005.

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Shilyaev, Mihail, Elena Hromova, Aleksandr Bogomolov, A. Pavlenko, and V. Butov. Modeling of hydrodynamics and heat and mass transfer in dispersed media. ru: INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1865376.

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The monograph presents methods for calculating the dehydration of wet granular materials in industrial centrifuges, filter presses and vacuum filters under the influence of gravitational forces, as well as by purging the granular layer with dry air with elevated temperature; physical and mathematical models of gas absorption and the theory of capturing submicron dust by condensation in foam, centrifugal bubbling apparatus and hollow nozzle scrubbers, packing columns and tubular absorbers; physical and mathematical models of dry adsorption of gases in packing columns and flues by injecting a dispersed adsorbent into the flow are presented, a method for determining the phase equilibrium constants of sorption processes based on the developed models is proposed; physical and mathematical modeling and analysis of the combustion process of dispersed solid ash fuel in a four-stage cyclone gorenje is carried out. the furnace. It can be useful in the educational process for a number of specialties, in particular thermal power engineering, chemical-technological, metallurgical profiles, environmentalists, as well as for researchers and graduate students and in engineering practice.
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Chiou, Wen-An, Helmut Coutelle, Andreas Decher, Michael Dörschug, Reiner Dohrmann, Albert Gilg, Stephan Kaufhold, et al. Bentonites -. Edited by Stephan Kaufhold. E. Schweizerbart Science Publishers, 2021. http://dx.doi.org/10.1127/bentonites/9783510968596.

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<p><b>Bentonites</b> are rocks mostly consisting of swelling clay minerals. They were first described from the Cretaceous Benton Shale near Rock River, Wyoming, USA. </p> <p> Because of their useful properties (e.g. highly adsorbent, cation exchanging, swelling), bentonites have many uses, in industry (among them as drilling mud, purification agent, binder, adsorbent, paper production), culture (for e.g. pottery) and medicine/cosmetics/cat litter, civil engineering, and in the future even in the disposal of high-level nuclear waste. </p> <p> Particular chemical characteristics of bentonite clay minerals are rather variable but critically determine their suitability for a particular application. </p> <p> The 15 specialist authors discuss bentonite terminology, classification and genesis and use in eight chapters. Individual chapters deal with the methods bentonites are analysed with, their properties and performance in terms of parameters such as cation exchange capactiy, rheology, coagulation concentraion, water uptake capacity, free swelling, and electrical resistivity (amongst others). </p> <p> A chapter is dedicated to the sources of bentonites, the technology employed to produce them, and how quality control is carried out both in the mine and the laboratory. A further chapter is dedicated to methods of processing the mined material, different activation methods, drying, grinding, and purification. </p> <P> Use cases for bentonites are discussed in a chapter of its own. References, a section on norms and standards, and a list of abbreviations complete the text. </p> <p> The volume addresses students, researchers, and professionals in the mineral industry dealing with bentonite and their clay-mineral constituents, quality assessement and control, and persons that use bentonites in their products. </p>
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Lichtfouse, Eric, and Grégorio Crini. Green Adsorbents for Pollutant Removal: Innovative materials. Springer, 2018.

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Book chapters on the topic "Adsorbent material"

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Herath, H. K. T. M., M. K. D. D. S. Meegoda, and K. G. N. Nanayakkara. "Development of an Adsorbent Material for Removing Natural Organic Materials from Water." In Lecture Notes in Civil Engineering, 565–72. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4412-2_44.

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Sriram, Aswin, and Ganapathiraman Swaminathan. "Removal of Rose Bengal Dye Using Low-Cost Adsorbent Material." In GCEC 2017, 1223–34. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8016-6_85.

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Vaghasia, Ravi, Miraj Savani, and Bharti Saini. "Metal Organic Frameworks (MOFs) as an Adsorbent Material for CO2 Capture." In Energy, Environment, and Sustainability, 157–86. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8599-6_7.

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Singh, Jasbir, Neeraj Mehla, and Abhit Kumar Sharma. "Performance Enhancement of Evaporative Cooling Device Using Silica Gel as an Adsorbent Material." In Lecture Notes in Mechanical Engineering, 157–65. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8304-9_11.

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Machado, Fernando Machado, and Carlos Pérez Bergmann. "Materials for Adsorbent Applications." In Nanostructured Materials for Engineering Applications, 141–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19131-2_10.

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Okanigbe, Daniel Ogochukwu, Abimbola Patricia Popoola, Olawale Moshood Popoola, and Prudence Mamasia Moshokwa. "Review on Hydrotalcite-Derived Material from Waste Metal Dust, a Solid Adsorbent for CO2 Capture: Challenges and Opportunities in South African Coal-Fired Thermal Plant." In The Minerals, Metals & Materials Series, 81–93. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92559-8_9.

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Shim, Choon Hee, Woo Keun Lee, and Hyo Jon Ban. "Preparation of Adsorbent from Mine Residues." In Materials Science Forum, 597–600. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-431-6.597.

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Pérez-Botella, Eduardo, Miguel Palomino, Susana Valencia, and Fernando Rey. "Zeolites and Other Adsorbents." In Nanoporous Materials for Gas Storage, 173–208. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3504-4_7.

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Nesic, Aleksandra R., Antonije Onjia, Sava J. Velickovic, and Dusan G. Antonovic. "Preparation and Characterisation of Novel Biodegradable Material Based on Chitosan and Poly(Itaconic Acid) as Adsorbent for Removal of Reactive Orange 16 Dye from Wastewater." In Sustainable Development, Knowledge Society and Smart Future Manufacturing Technologies, 243–51. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14883-0_18.

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Palash, Mujib L., Animesh Pal, Mir Shariful Islam, and Bidyut Baran Saha. "Characterizing Adsorbent Materials Employing Atomic Force Microscopy." In Rapid Refrigeration and Water Protection, 113–32. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93845-1_5.

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Conference papers on the topic "Adsorbent material"

1

Kannan, Pravin, Pal Priyabrata, Fawzi Banat, Satyadileep Dara, Ibrahim Khan, Eisa AlJenaibi, and Marwan AlAwlqi. "Calcium Alginate-Based Carbon Composite Adsorbents for Lean Methyldiethanolamine Reclamation: Laboratory to Pilot Scale Testing and Validation." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207754-ms.

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Abstract Calcium alginate-based carbon composite (CAC) adsorbents have been proved to effectively remove total organic acid anions as HSS anions, metal ions, and organic degraded products from lean methyldiethanolamine (MDEA solvents) used as solvent in natural gas sweetening unit. During the material developmental phase, the CAC adsorbent was synthesized and utilized to remove various contaminants, including heat stable salts (HSS), organic degraded products, and heavy metal ions from lean MDEA using a lab-scale adsorption setup. Based on the results, a "demo-scale" fixed bed adsorption unit was designed and simulated using adsorption model to predict breakthrough behavior. In the current work, the efficiency of the CAC adsorbent in removing HSS and total organic acid anions were investigated. Analysis of treated samples demonstrated the removal efficiency of the adsorbent under plant scale conditions. Further experiments performed at lab scale indicated the effectiveness of the adsorbent in the removal of bicine from lean MDEA samples. This work provides a framework for future testing and comprehensive process performance evaluation of adsorbents for lean MDEA reclamation in actual plant conditions. A fast, simple, and reliable scale up procedure for fixed bed adsorber developed earlier was validated through this work.
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Yu, Chunguang, and Xuena Han. "Adsorbent Material Used In Water Treatment-A Review." In 2015 2nd International Workshop on Materials Engineering and Computer Sciences. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/iwmecs-15.2015.55.

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Chan, K. C., and Christopher Y. H. Chao. "Improved Thermal Conductivity of 13X/CaCl2 Composite Adsorbent by CNT Embedment." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17168.

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Adsorption cooling systems utilize the principle of adsorption to generate cooling effect. Composite adsorbents synthesized from zeolite 13X and CaCl2 have previously been shown to have a high adsorption capacity and high adsorption rate with lower desorption temperature where the adsorption capacity and adsorption rate are 420% and 122% of zeolite 13X under the same condition respectively. This results in more compact design and a lower temperature waste-heat source can be used. The system performance is, however, limited by the low thermal conductivity of the 13X/CaCl2 composite adsorbent which is common for many adsorbents. Due to the low thermal conductivity of the adsorbent, poor heat transfer and slow temperature change in the adsorbent bed lead to longer time for the adsorbent to achieve the adsorption/desorption temperature. This directly reduces the adsorption/desorption rate of the adsorbate on the adsorbent, such as water on zeolite, and results in lower system coefficient of performance (COP) and specific cooling power (SCP). It was proposed that embedding carbon nanotube (CNT) into the 13X/CaCl2 composite absorbents can increase the thermal conductivity of the adsorbent bed to improve the system performance. Thus, the properties of the multi-wall CNT (MWCNT) embedded zeolite 13X/CaCl2 composite adsorbents were investigated to find out the optimized composition for the cooling system. The material properties of the MWCNT embedded zeolite 13X/CaCl2 composite adsorbent were measured. The thermal conductivities of the MWCNT embedded 13X/CaCl2 composite adsorbents were predicted by developing a new theoretical model modified based on area contact model. The performance of the adsorption cooling system using zeolite 13X and MWCNT embedded composite adsorbent were studied numerically. It is found that the COP and SCP are improved by 3.6 and 26 times respectively. This results in a much more compact and energy efficient cooling system.
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Zahari, N. M., L. K. Lok, M. H. Zawawi, L. M. Sidek, Daud Mohamad, M. Z. Ramli, S. H. Haron, et al. "Floating water treatment device using zeolite as adsorbent material." In GREEN DESIGN AND MANUFACTURE: ADVANCED AND EMERGING APPLICATIONS: Proceedings of the 4th International Conference on Green Design and Manufacture 2018. Author(s), 2018. http://dx.doi.org/10.1063/1.5066876.

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Dhakal, D., and S. Babel. "Locally available material as adsorbent to treat arsenic contaminated water." In 5th IET International Conference on Clean Energy and Technology (CEAT2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.1330.

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LIMA, Daniele de Andrade Villarim, Fabiana Abreu REZENDE, and Denise Alves FUNGARO. "CHARACTERISTICS OF WOOD SAWDUST-DERIVED BIOCHAR: POTENTIAL AS ADSORBENT MATERIAL." In SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE. DR. D. SCIENTIFIC CONSULTING, 2022. http://dx.doi.org/10.48141/sbjchem.21scon.11_abstract_lima_ipen.pdf.

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Biochar is a potential additive for agricultural soil and can be used as an eco-friendly and economical adsorbent material. Biochar properties are affected by several technological parameters, mainly pyrolysis temperature and feedstock, which differentiation can lead to products with a wide range of characteristics. The biochar sample was produced from wood sawdust at 450˚C via slow pyrolysis and was characterized. Parameters characterized to include: physical properties (bulk density, porosity), chemical properties (composition, pH, conductivity, cation exchange capacity), hydraulic property (water holding capacity), proximate analysis, X-ray diffractometry to obtain information on the mineralogical composition, among others. The analysis of biochar properties is important for determining the biochar application.
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Tran Thuy, Tuyet Mai, and Dung Van Nguyen. "Octahedral Molecular Sieve Manganese Oxide: Feasible Material for Hg(II) Remediation." In 5th International Conference on Advanced Materials Science. Switzerland: Trans Tech Publications Ltd, 2023. http://dx.doi.org/10.4028/p-03m8d0.

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Manganese-oxide material prepared by simple sol-gel method was used as an adsorbent of Hg(II) in aqueous solution. X-ray diffraction pattern and Raman spectroscopy were conducted to prove the cryptomelane crystal. The Hg(II) adsorption behavior of the synthesized material well obeyed kinetic models of pseudo-second-order and Elovich equations indicating a chemisorption from the collected kinetic parameters. 500 mgHg2+/gcryptomelane of equilibrium uptake capacity from pseudo-second-order and 7.87x103 mgHg2+/gcryptomelane/day of initial adsorption rate from the Elovich model were obtained for adsorption of Hg2+ cation over cryptomelane adsorbent. Desorption constant of 0.018 gcryptomelane/mgHg is a significant small value, in comparison to initial adsorption rate, proposing a possible chemisorption for remediation of Hg(II) on cryptomelane structure.
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Majumder, Chanchal. "Mesoporous Iron Adsorbent: A novel technique for arsenic removal from contaminated water." In International Conference on Material and Environmental Engineering (ICMAEE 2014). Paris, France: Atlantis Press, 2014. http://dx.doi.org/10.2991/icmaee-14.2014.22.

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Camara, E. H. M., P. Breuil, D. Briand, L. Guillot, C. Pijolat, J. P. Viricelle, N. F. de Rooij, Matteo Pardo, and Giorgio Sberveglieri. "Influence of the Adsorbent Material in the Performances of a Micro Gas Preconcentrator." In OLFACTION AND ELECTRONIC NOSE: Proceedings of the 13th International Symposium on Olfaction and Electronic Nose. AIP, 2009. http://dx.doi.org/10.1063/1.3156537.

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Royanudin, Moch, Yudhi Utomo, and Surjani Wonorahardjo. "The application of silica-cellulose material as heavy metal adsorbent on laboratory wastewater." In INTERNATIONAL CONFERENCE ON LIFE SCIENCES AND TECHNOLOGY (ICoLiST 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0052808.

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Reports on the topic "Adsorbent material"

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Gill, Gary A., Li-Jung Kuo, Jonathan E. Strivens, Jiyeon Park, George T. Bonheyo, Robert T. Jeters, Nicholas J. Schlafer, and Jordana R. Wood. Determination of Adsorption Capacity and Kinetics of Amidoxime-Based Uranium Adsorbent Braided Material in Unfiltered Seawater Using a Flume Exposure System. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1332627.

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Janke, Christopher, Sadananda Das, Yatsandra Oyola, Richard Mayes, Tomonori Saito, Suree Brown, Gary Gill, Li-Jung Kuo, and Jordana Wood. Milestone Report - Complete New Adsorbent Materials for Marine Testing to Demonstrate 4.5 g-U/kg Adsorbent. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1162052.

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Park, Jiyeon, Robert T. Jeters, Gary A. Gill, Li-Jung Kuo, and George T. Bonheyo. Toxicity of Uranium Adsorbent Materials using the Microtox Toxicity Test. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1179520.

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Siegel, Donald J., Alauddin Ahmed, Yiyang Liu, Adam Matzger, Justin Purewal, Antek Wong-Foy, Mike Veenstra, and Saona Seth. Hydrogen Adsorbents with High Volumetric Density: New Materials and System Projections. Office of Scientific and Technical Information (OSTI), March 2019. http://dx.doi.org/10.2172/1502953.

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Saito, Tomonori, S. Brown, Sadananda Das, Richard T. Mayes, Christopher James Janke, Sheng Dai, Li-Jung Kuo, et al. New Fiber Materials with Sorption Capacity at 5.0 g-U/kg Adsorbent under Marine Testing Conditions. Office of Scientific and Technical Information (OSTI), March 2016. http://dx.doi.org/10.2172/1360029.

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Kim, Do Heui, George G. Muntean, Charles H. F. Peden, Ken Howden, Randy Stafford, John Stang, Aleksey Yezerets, Neal Currier, H. Y. Chen, and H. Hess. CRADA Final Report: Mechanisms of Sulfur Poisoning of NOx Adsorber Materials. Office of Scientific and Technical Information (OSTI), March 2009. http://dx.doi.org/10.2172/1334911.

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Palomer, A., M. Légère, and E. Furimsky. Preparation of solid adsorbents for hot gas clean-up part 1. Northern Pigment ltd. materials. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/302621.

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Gubbins, K. E. Adsorption and diffusion of fluids in well-characterized adsorbent materials. [Annual] progress report, August 1, 1993--July 31, 1994. Office of Scientific and Technical Information (OSTI), August 1994. http://dx.doi.org/10.2172/10174923.

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Gubbins, Keith E., R. F. Cracknell, M. Maddox, and D. Nicholson. Adsorption and diffusion of fluids in well-characterized adsorbent materials. Renewal progress report, August 1, 1995 to January 31, 1998. Office of Scientific and Technical Information (OSTI), August 1999. http://dx.doi.org/10.2172/756779.

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Allen, Susan D. Laser Induced Desorption Time of Flight Mass Spectrometer Analysis of Adsorbed Contaminants on Vacuum Ultraviolet Lithography Optic Materials. Fort Belvoir, VA: Defense Technical Information Center, February 2004. http://dx.doi.org/10.21236/ada422349.

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