Relevant bibliographies by topics / Absorption and adsorption

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Absorption and adsorption'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Absorption and adsorption"

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Chindikia, Ilmy, Budhi Oktavia, Ananda Putra, and Edi Nasra. "Optimasi Adsorpsi Ion Fe3+ Menggunakan Adsorben Silika Gel Sulfonat." Periodic 13, no. 1 (April 1, 2024): 67. http://dx.doi.org/10.24036/periodic.v13i1.124483.

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Adsorption is a process of absorption of adsorbate or substances absorbed by the surface of the adsorbent or absorbent substance which aims to reduce the Fe3+ cation in a solution. Research has been carried out on the adsorption of Fe3+ cations using silica sulfonate adsorbents by varying the pH and contact time to obtain optimum conditions during adsorptions. The adsorption process of Fe3+ cations used a sulfonate modified silica gel adsorbent has been carried out by varying the pH, namely 2; 3; 4; 5; 6; 7 and the maximum pH has been fixed at pH 6 with an abdorption capacity of 2,32732 mg/g with an absorpyion percentage of 78.79 %, contact time variations of 15; 30; 45; 60; 75 minutes have been obtained for optimum contact time at 45 minutes with an absorption capacity of 2,225756 mg/g and absorption percent of 77,33 %
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Grzebielec, Andrzej, and Artur Rusowicz. "Analysis of the use of adsorption processes in trigeneration systems." Archives of Thermodynamics 34, no. 4 (December 1, 2013): 35–49. http://dx.doi.org/10.2478/aoter-2013-0028.

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Abstract The trigeneration systems for production of cold use sorption refrigeration machines: absorption and adsorption types. Absorption systems are characterized namely by better cooling coefficient of performance, while the adsorptive systems are characterized by the ability to operate at lower temperatures. The driving heat source temperature can be as low as 60-70 °C. Such temperature of the driving heat source allows to use them in district heating systems. The article focuses on the presentation of the research results on the adsorption devices designed to work in trigeneration systems.
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Kern, Raymond. "Adsorption, absorption, versus crystal growth." Crystal Research and Technology 48, no. 10 (August 13, 2013): 727–82. http://dx.doi.org/10.1002/crat.201200704.

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Tvardovskii, A. V. "A common approach to adsorption and absorption: Polymolecular adsorption." Bulletin of the Russian Academy of Sciences Division of Chemical Science 41, no. 4 (April 1992): 603–7. http://dx.doi.org/10.1007/bf01150877.

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Tai, Shuyun, Ying Li, Ling Yang, Yue Zhao, Sufei Wang, Jianxin Xia, and Hua Li. "Magnetic-Transition-Metal Oxides Modified Pollen-Derived Porous Carbon for Enhanced Absorption Performance." International Journal of Environmental Research and Public Health 19, no. 24 (December 13, 2022): 16740. http://dx.doi.org/10.3390/ijerph192416740.

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In our work, the transition-metal-oxide precursor (TMO@BC, M = Fe, Co, Ni) has been loaded on the pollen carbon by the hydrothermal method and annealed at different temperatures to generate a composite material of metal oxide and pollen carbon in this study, which can effectively prevent agglomeration caused by a small size and magnetism. The XRD patterns of the samples showed that the as-synthesized metal oxides were γ-Fe2O3, CoO, and NiO. In the 20 mg/L methyl orange adsorption experiment, the adsorption amount of CoO@C at 500 ℃ reached 19.32 mg/g and the removal rate was 96.61%. Therefore, CoO@C was selected for the adsorption correlation-model-fitting analysis, which was in line with the secondary reaction. The pseudo-second-order kinetic model (R2: 0.9683–0.9964), the intraparticle diffusion model, and the Freundlich adsorption isotherm model indicated that the adsorption process was the result of both physical and chemical adsorptions, and the judgment was based on the electrostatic action. The adsorption and removal efficiency of ciprofloxacin (CIP) by changing the pH of the reaction was about 80%, so the electrostatic attraction worked, but not the main factor. Recovered by an external magnetic field, the three-time recycling efficiency was still maintained at more than 80%. This novel biomass-derived magnetic porous carbon material embedded with transition-metal-oxide nanoparticles is highly promising for many applications, especially in the field of environmental remediation.
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Li, Qiang, Sheng Han, Da Ke Hao, Jia Jia Wang, Yan Luo, Yan Hong Qu, Dong Xue Song, and Xue Ying Hu. "Research on the Cr (VI) Absorption by Activated Sludge." Applied Mechanics and Materials 229-231 (November 2012): 138–41. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.138.

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The adsorption performance of Cr (VI) on activated sludge and the effect of adsorption time, pH, temperature on the adsorption and desorption were studied. The initial pH is important for biosorption, and the optimum effect on Cr (VI) biosorption is acquired within initial pH of 0.5-1.0. Activated sludge has high efficiency of treating low concentration Cr (VI) wastewater. The removal rate of Cr (VI) could reach 99% when the total concentrations of Cr (VI) were 10 mg/L. The results of static test showed that the adsorption equilibrium was reached within 60 min. The biosorption process was fitted into Langmuir and Freundlich isotherm adsorption equations. It is presumed that the progress of biosorption was reversible adsorption and irreversible adsorption simultaneously, however the reversible adsorption was more important in the biosorption and the adsorption belongs to physics adsorption.
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Nadeak, Nadia Agnes Cantika, Moondra Zubir, Rini Selly, Hafni Indriati Nasution, Jasmidi Jasmidi, Siti Rahmah, and Putri Faradilla. "Adsorption Properties of Fe (II) from Activated Carbon Composite of Empty Palm Oil Bunches with Metal Organic Frameworks Cu-TAC." Indonesian Journal of Chemical Science and Technology (IJCST) 6, no. 2 (July 31, 2023): 192. http://dx.doi.org/10.24114/ijcst.v6i2.49379.

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This study aims to determine the adsorption capacity, study the kinetics and adsorption equilibrium of activated carbon/AC and composite carbon/AC-Cu(TAC) in the adsorption process of Fe metal. Oil palm empty fruit bunches (EFB) were used as activated carbon and modified with MOFs Cu(TAC) composite. The concentration of Fe(II) ions adsorbed during the adsorption process was analyzed using AAS. The variations used to determine the optimum conditions for absorption of Fe(II) ions are the mass variation of the adsorbent, the variation of the adsorbate concentration and the contact time between the adsorbent and the adsorbate. Through variations in concentration, the adsorption isotherm characteristics were determined and through variations in contact time, the adsorption kinetics model was determined. The results of AC characterization showed a sharp absorption in the presence of OH, CH and CO groups which indicated the presence of cellulose. AC is amorphous and AC-Cu(TAC) is crystalline and the pore size is mesoporous. The optimum condition for AC is the mass variation of 1 g with an absorption capacity of 0.1816 mg/g, a variation of the concentration of 60 ppm with an absorption capacity of 3.49 mg/g and a contact time of 75 minutes with an absorption capacity of 3.82 mg/g. The optimum condition for ACCu(TAC) was the mass variation of 1 g with an absorption capacity of 0.7275 mg/g, a variation of the concentration of 180 ppm with an absorption capacity of 10.52 mg/g and a contact time of 15 minutes with an absorption capacity of 10.85 mg/g. AC-Cu(TAC) has a better adsorption ability in adsorbing Fe(II) ions. For AC and AC-Cu(TAC) the suitable adsorption isotherm is Freundlich isotherm and the suitable adsorption kinetics model is pseudo second order
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Zhou, Tao, Jian Ping Ai, Wei Xiu Liao, Li Hong Cheng, Yue Zhang, Rui Jiang, Zhi Qin Chen, and Wen Kui Li. "Zn-Cr Layered Double Hydroxides Composites for Methyl Orange (MO) Absorption." Solid State Phenomena 281 (August 2018): 836–41. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.836.

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In this study, The Zn-Cr nanocomposite was synthesized using the hydrothermal method show good adsorption property. The as-prepared LDHs absorbent were characterized by Powder X-ray Diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier Transform Infrared (FT-IR), BET surface area, and simultaneously UV-visible spectrophotometer. The nanocomposites of Zn-Cr layered double hydroxides, the strong adsorptive adsorbents for anions. Zn-Cr LDHs with various Zn/Cr molar ratios for 2, 3, 4. The nanocomposites quickly adsorbed the anionic dyes such as methyl orange (MO) without the light illumination. The effects of Zn/Cr molar ratio on the adsorption performance of Zn-Cr LDHs were investigated.
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Du, Yuan Yuan, Hai Hong Fang, and Peng Wu Zheng. "Porous Sepiolite/Starch Composites：Preparation, Structure and Absorption Properties." Advanced Materials Research 634-638 (January 2013): 1937–42. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.1937.

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The porous nanocomposites consisting of starch and sepiolite were prepared by a solvent exchange technique, i.e. replacing ice crystals in frozen sepiolite/starch gel with ethanol. The influence of sepiolite contents on pore size, apparent density, moisture adsorption, oil adsorption capacity and dye adsorption of porous sepiolite/starch composites (SPPSs) was investigated. The addition of sepiolite reduced pore size, apparent density and moisture adsorption of SPPSs. The oil adsorption and the methylene blue adsorption of SPPSs could respectively reach 10.1 g/g and 2.07 mg g-1 at the maximal, while those of PS were only 5.83 g/g and 1.55 mg g-1.
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Kusano, Shogo, Daiju Matsumura, Kenji Ishii, Hirohisa Tanaka, and Jun’ichiro Mizuki. "Electrochemical Adsorption on Pt Nanoparticles in Alkaline Solution Observed Using In Situ High Energy Resolution X-ray Absorption Spectroscopy." Nanomaterials 9, no. 4 (April 20, 2019): 642. http://dx.doi.org/10.3390/nano9040642.

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The oxygen reduction reaction (ORR) on Pt/C in alkaline solution was studied by in situ high energy resolution X-ray absorption spectroscopy. To discuss the X-ray absorption near-edge structure (XANES), this paper introduced the rate of change of the Δμ (RCD), which is an analysis method that is sensitive to surface adsorption. The surface adsorptions as hydrogen (below 0.34 V), superoxide anion (from 0.34 V to 0.74 V), hydroxyl species (from 0.44 V to 0.74 V), atomic oxygen (above 0.74 V), and α-PtO2 (above 0.94 V) were distinguished. It is clarified that the catalytic activity in an alkaline solution is enhanced by the stability of atomic oxygen and the low stability of superoxide anion/peroxide adsorption on the platinum surface.
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Dissertations / Theses on the topic "Absorption and adsorption"

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Kalimtgis, Konstandinos. "ADSORPTION OF TRICHLOROETHYLENE AND CARBON TETRACHLORIDE ON SYNTHETIC AND NATURAL ADSORBENTS." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275355.

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Lewis, D. "Enzyme adsorption to polystyrene latex." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382347.

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Mohd, Ali. "Adsorption et électrosorption d'herbicides et de tensioactifs sur charbons actifs en grains." Pau, 1996. http://www.theses.fr/1996PAUU3028.

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Ce travail relatif a l'adsorption et l'electrosorption (adsorption sous potentiel impose) de polluants sur charbons actifs en grains comporte trois parties : la premiere partie a pour but d'etudier l'influence sur l'interaction adsorbat-adsorbant de la nature physique et chimique du charbon actif. Les resultats obtenus, par les methodes de titrage de boehm, de chromatographie gazeuse inverse et d'une combination de ces deux methodes, ont permis d'identifier separement l'effet sur les forces d'interaction de la porosite et des groupements fonctionnels. La deuxieme partie est consacree a l'etude de l'adsorption d'herbicides et de tensioactifs sur charbon actif en grains (cag) en regime dynamique. Les resultats obtenus montrent que la capacite et la cinetique d'adsorption en flux continu sont influencees par les proprietes de l'adsorbat et celles de l'adsorbant. Les parametres utilises sont la solubilite, la charge et la concentration pour les solutes, la porosite et les proprietes acido-basiques pour l'adsorbant. La capacite d'adsorption varie lineairement avec ln t. La derniere partie s'interesse a l'etude de l'electrosorption de deux herbicides et de trois tensioactifs. Les resultats montrent, pour les herbicides atrazine et simazine, que l'application d'un potentiel negatif au cag augmente legerement l'adsorption tandis qu'un potentiel positif diminue nettement la quantite retenue. Pour les tensioactifs anionique (abs) ou non-ionique (triton n-101), l'effet d'un potentiel applique est relativement faible et difficile a interpreter. Pour le cdbac, tensioactif cationique, l'alternance de cycles positifs et negatifs donne lieu a une electrosorption reversible et comprise entre 10 et 15%.
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Johnson, William H. "Sorption models for U, Cs, and Cd on upper Atlantic Coastal Plain soils." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/16609.

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Merino, Jose Carlos Alvarez, and Kazuo Hatakeyama. "Technology surveillance of the solar refrigeration by absorption/adsorption." Institute of Electrical and Electronics Engineers Inc, 2016. http://hdl.handle.net/10757/622310.

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PICMET 2016 - Portland International Conference on Management of Engineering and Technology: Technology Management For Social Innovation, Proceedings4 January 2017, Article number 7806767, Pages 1976-19822016 Portland International Conference on Management of Engineering and Technology, PICMET 2016; Honolulu; United States; 4 September 2016 through 8 September 2016; Category numberCFP16766-ART; Code 125891
In order to establish networks of cooperation looking for not to duplicate research and even to make use of existing research in a remote form, it is necessary to identify and classify (around the world) the researchers and laboratories, that are researching in the topic of solar refrigeration by absorption/adsorption. The methodology consists in: i) the technology's classification, ii) technological trajectory Identification, iii) a thematic bibliographic review, and iv) patent's analysis. In this way, with the previous determination of keywords, will be identified main authors and their respective institutions. With the same keywords, are determined the licensed patents (in certain span of time). In addition, the analysis of publications, patents, and commercial products give us an opportunity to establish comparisons between prototypes and tests (in several conditions). The larger results implicate the use of actor's network and the remote access to the data and tests, for a collaborative research, overcoming the lack of laboratory resource and accelerating the knowledge acquisition
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Robinson, Andrew William. "Adsorption on platinum (110) : reflection-absorption infra-red studies." Thesis, University of Bath, 1988. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379555.

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Deyme, Michel. "Modification de la composition chimique superficielle de polymères : étude de l'adsorption du collagène aux interfaces air ou polymère/solutions aqueuses." Paris 11, 1989. http://www.theses.fr/1989PA114804.

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Mercury, Maud Chloé. "Etude de méthodes et moyens d'adsorption/désorption pour l'analyse en ligne de traces de dioxines/furannes à l'émission de sources fixes." Aix-Marseille 1, 2010. http://www.theses.fr/2010AIX11049.

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La gestion des déchets est un problème majeur de notre société de consommation. En 2008, la France a produit 868 millions de tonnes de déchets. Aujourd’hui, un des principaux moyens de valoriser et d’éliminer nos déchets ultimes est l’incinération. Cependant, depuis la découverte des « dioxines » issues des procédés de combustion, cette technique est devenue un sujet d’inquiétude. L’application de la réglementation fixant des seuils limites à l’émission a engendré une forte diminution des émissions des sources fixes. Toutefois, il apparaît important de connaître et maîtriser en « temps réel » les taux de dioxines émis en sortie d’incinérateur. Ces travaux s'intègrent dans une étude globale d'un dispositif de mesure en ligne, "temps réel" et directe de dioxines/furannes à l'émission de sources industrielles fixes. Ils concernent plus spécifiquement l’étude de nouveaux moyens d’adsorption sélectifs de congénères toxiques vis-à-vis des autres congénères et des composés de la matrice gazeuse des rejets, matériaux qui seront implantés dans ce dispositif en ligne. Dans un premier temps, ces travaux se sont focalisés sur l'étude, la synthèse et la caractérisation de nouveaux matériaux adsorbants sélectifs de type zéolithique. Ces matériaux ont été utilisés comme supports lors de l’adsorption de dioxines en solution (2,3-DCDD et 1,2,3,4-TCDD) et ont été comparés aux adsorbants utilisés dans la norme NF EN 1948 lors du prélèvement à l’émission. Cette étude de l’adsorption de dioxines en solution dans l’isooctane a permis d’identifier la zéolithe NaX comme la plus efficace pour le piégeage sélectif des dioxines. En parallèle, un appareillage polyvalent d’adsorption/désorption thermique en ligne de dioxines en phase, gazeuse a été conçu et mis au point. Ce dispositif est couplé à un chromatographe en phase gazeuse et à un spectromètre de masse. Il permet l’analyse en ligne de flux de gaz étalon de dioxines et l’analyse de dioxines piégées dans un tube d’adsorbants. L’ensemble de ces travaux ont permis de démontrer l’intérêt d’utiliser les zéolithes pour le piégeage sélectif des dioxines en phase gazeuse dans un pré-dispositif de terrain d’adsorption/désorption thermique en ligne de dioxines à l’émission de sources fixes
Waste management is a major problem of our society where the amount of waste is still increasing. In 2008, in France, 868 million tons of waste were produced. Today, incineration is considered to be an effective method for disposing of waste. However, since the discovery dioxins generated in all waste plants, this technique becomes a topic of great concern. The authorities require a regulation of dioxin emissions lower than 0. 1 ng ITEQ. M-3 in Europe. Consequently it appears very important to measure and control in “real time” dioxin emission levels from waste incinerators. The major focus of this dissertation work centers on the development of an on-line, real time and direct monitoring technique to study stationary emission sources of dioxins/furans. It concerns the study of new classes of selective adsorbents; in relation to the complexity of the gas mixture in the incinerator’s emissions and to the possible existence of the gas phase dioxin congeners. In a first time, these works focus on study, synthesis and characterization of new selective adsorbent materials as zeolites. These materials have been used as supports for adsorption of solutions of dioxins (2,3- DCDD and 1,2,3,4-TCDD in isooctane) and they have been compared to adsorbents used in NF EN 1948 standard during emission sampling. This study shows that NaX zeolite was the best adsorbent for selective trapping on dioxins. In a second time, an analytical method for on line monitoring of gas phase dioxin at the emission of waste incinerators is designed and developed. This method is based on an adsorption/ thermal desorption device coupled to gas chromatography and mass spectrometry. The device allows the on-line analysis of the standard gas flue of dioxins and the analysis of dioxins trapped in an adsorbent tube. To conclude, these works shows the interest of use zeolites for selective trapping of gas phase dioxins in an on-line field device of adsorption/ thermal desorption of dioxins from stationary sources
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Caja, Monique. "Adsorption du gaz naturel sur les charbons en conditions anhydres et saturées en eau : Etude des quantités adsorbées et du fractionnement isotopique." Aix-Marseille 2, 2000. http://www.theses.fr/2000AIX22019.

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Nelson, Peter Robert. "Oxygen from air by pressure swing adsorption." Thesis, Cape Technikon, 1993. http://hdl.handle.net/20.500.11838/1281.

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Thesis (Masters Diploma (Mechanical engineering)--Cape Technikon, Cape Town, 1993
The main objective of the work outlined in tills project is to create an awareness of Pressure Swing Adsorption (PSA) Processes, their application to oxygen production systems in the RSA and the construction and testing of a pilot plant, built to assess an overseas design. Available oxygen PSA technology was examined from a theoretical approach, right through to practical applications. The aim was not to re-invent the technology, but to review what technology is available and to assess its suitability for the South African Industrial Sectors. This was undertaken by investigating all PSA processes that are available to market the product to industry. The technology review includes an investigation of overseas PSA technologies and compares these modes of technology with the technology that is readily available to Afrox Limited, a major gas supplier in South Africa. This resulted in the technology from the British Oxygen Company being thoroughly reviewed, examined and compared to various other modes of technology. The basic principals of adsorption are discussed to give the reader an understanding of the factors that influence efficient adsorption and adsorbent regeneration. The parameters that defme when adsorption separation processes are applicable to the separation of atmospheric gases are also discussed. The different types of PSA plant layout are discussed in great detail and it is explained when each plant layout type would be used.
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Books on the topic "Absorption and adsorption"

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D, Harter Robert, ed. Adsorption phenomena. New York: Van Nostrand Reinhold Co., 1986.

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Zarzycki, Roman. Absorption: Fundamentals & applications. Oxford: Pergamon Press, 1993.

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W, Cole Milton, and Zaremba Eugene 1946-, eds. Physical adsorption: Forces and phenomena. Oxford: Clarendon Press, 1997.

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Yang, R. T. Gas separation by adsorption processes. Boston: Butterworths, 1987.

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Yang, R. T. Gas separation by adsorption processes. Singapore: World Scientific, 1997.

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

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Chattopadhyay, P. Absorption & stripping. New Delhi: Asian Books, 2007.

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Douglas, Gunnison, Pennington Judith C, Zappi Mark E, Teeter Cynthia L, Fredrickson Herbert L, United States. Army. Corps of Engineers., U.S. Army Engineer Waterways Experiment Station., Environmental Laboratory (U.S. Army Engineer Waterways Experiment Station), and Program Manager for Rocky Mountain Arsenal (Colo.), eds. Assessment of mechanisms impacting N-nitrosodimethylamine fate within the North Boundary Containment System, Rocky Mountain Arsenal. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1997.

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McLean, Stuart. The absorption [i.e. adsorption] of helium by charcoal. [Toronto]: University Library, pub. by the Librarian, 1996.

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Nelson, T. P. Full-scale carbon adsorption applications study. Cincinnati, OH: U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1985.

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Book chapters on the topic "Absorption and adsorption"

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Boyadjiev, Christo, Maria Doichinova, Boyan Boyadjiev, and Petya Popova-Krumova. "Absorption–Adsorption Method." In Modeling of Column Apparatus Processes, 417–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-89966-4_16.

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Boyadjiev, Christo, Maria Doichinova, Boyan Boyadjiev, and Petya Popova-Krumova. "Absorption-Adsorption Method." In Modeling of Column Apparatus Processes, 283–94. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28259-6_11.

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Spellman, Frank R. "Adsorption vs Absorption." In The Science of Carbon Sequestration and Capture, 72–73. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003432838-7.

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Yang, Wansheng, Shuli Liu, Xiaoqiang Zhai, Yin Bi, Zhangyuan Wang, and Xudong Zhao. "Solar Desiccant (Absorption/Adsorption) Cooling/Dehumidification Technologies." In Advanced Energy Efficiency Technologies for Solar Heating, Cooling and Power Generation, 211–86. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-17283-1_7.

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Birdi, K. S. "Carbon Gas (Recycling: Adsorption/Absorption and Essentials)." In Climate Change and Carbon Recycling, 60–112. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003300250-2.

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Danoy, Alix, Kardelen Durmaz, Margaux Paoletti, Laetitia Vachez, Annick Roul, Jérôme Sohier, and Bernard Verrier. "Aqueous Suspensions of Fuller’s Earth Potentiate the Adsorption Capacities of Paraoxon and Improve Skin Decontamination Properties." In Dermal Absorption and Decontamination, 147–67. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09222-0_9.

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Kaplan, Drora. "Absorption and Adsorption of Heavy Metals by Microalgae." In Handbook of Microalgal Culture, 602–11. Oxford, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118567166.ch32.

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Furukawa, Makoto, Shuichiro Yoshida, and Naoto Nihei. "Evaluation of the Absorption of Different Forms of Cesium from Soil." In Agricultural Implications of Fukushima Nuclear Accident (IV), 55–61. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9361-9_7.

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AbstractCesium in soil exists in two forms. The soil in Fukushima Prefecture contaminated with radioactive cesium was classified into two fractions: the fraction of cesium with weak adsorption to soil (F1), and the fraction of cesium with strong adsorption to soil (F2). We evaluated the absorption of Cs by different crops (rice, soybean, and buckwheat) in different soil fractions by measuring the 133Cs and 137Cs concentrations in the soil and crops. We also evaluated the effect of potassium fertilization on cesium suppression in different soil fractions.Without K fertilization, 137Cs was absorbed mostly from the F1 fraction by all three crops; 133Cs was absorbed mostly from the F2 and F1 fractions by soybean and buckwheat, respectively, and from both F1 and F2 fractions by rice. Potassium fertilization decreased the percentages of both 137Cs and 133Cs absorbed from the F2 fraction by soybean. In contrast, buckwheat presented reduced absorption from the F1 fraction. In rice, the uptake of cesium by fraction did not change with or without potassium fertilization, indicating that different crops absorb cesium from different soil fractions.
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Noll, Kenneth E., and Jerry W. Crowder. "Control of Gases and Vapors by Adsorption, Absorption and Condensation." In Industrial Air Pollution, 145–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-76051-8_16.

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Pan, Yong, Zhe Zhang, Xiong-Shi Tong, Hai Li, Xiao-Hui Wang, Bei Liu, Chang-Yu Sun, Lan-Ying Yang, and Guang-Jin Chen. "Separation of Methane from Biogas by Absorption-Adsorption Hybrid Method." In Acid Gas Extraction for Disposal and Related Topics, 359–76. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118938652.ch23.

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Conference papers on the topic "Absorption and adsorption"

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Ha, Juyoung, François Farges, and Gordon E. Brown. "Adsorption and Precipitation of Aqueous Zn(II) on Hematite Nano- and Microparticles." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644487.

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Sakamaki, Masako, Hirokazu Takahashi, Takehisa Konishi, Atsuyuki Inoue, and Takashi Fujikawa. "X-Ray Absorption Fine Structure Spectroscopy Study of Arsenate Adsorption on Schwertmannite." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644498.

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Kusrini, Eny, Maya Lukita, Misri Gozan, Bambang Heru Susanto, Dedy Alharis Nasution, Arif Rahman, and Cindy Gunawan. "Enrichment process of biogas using simultaneous Absorption - Adsorption methods." In RENEWABLE ENERGY TECHNOLOGY AND INNOVATION FOR SUSTAINABLE DEVELOPMENT: Proceedings of the International Tropical Renewable Energy Conference (i-TREC) 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4979244.

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Alvarez Merino, Jose Carlos, and Kazuo Hatakeyama. "Technology surveillance of the solar refrigeration by absorption/adsorption." In 2016 Portland International Conference on Management of Engineering and Technology (PICMET). IEEE, 2016. http://dx.doi.org/10.1109/picmet.2016.7806767.

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Øi, Lars Erik, Philip Nitsche, and Solomon Aromada. "Comparison of Absorption and Adsorption Processes for CO2 Dehydration." In The First SIMS EUROSIM Conference on Modelling and Simulation, SIMS EUROSIM 2021, and 62nd International Conference of Scandinavian Simulation Society, SIMS 2021, September 21-23, Virtual Conference, Finland. Linköping University Electronic Press, 2022. http://dx.doi.org/10.3384/ecp21185287.

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Suzuki, Akane, Yasuhiro Inada, Kiyotaka Asakura, and Masaharu Nomura. "Time-Resolved DXAFS Study of Adsorption and Release of Hydrogen on Pt/MCM-41." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644629.

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Ravel, B., S. D. Kelly, D. Gorman-Lewis, M. I. Boyanov, J. B. Fein, and K. M. Kemner. "A pH-Dependent X-Ray Absorption Spectroscopy Study of U Adsorption to Bacterial Cell Walls." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644474.

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Cancès, Benjamin, Marc Benedetti, François Farges, and Gordon E. Brown. "Adsorption Mechanisms of Trivalent Gold onto Iron Oxy-Hydroxides: From the Molecular Scale to the Model." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644479.

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Tromp, Moniek, Jeroen A. van Bokhoven, Olga V. Safonova, Frank M. F. De Groot, John Evans, and Pieter Glatzel. "High Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy: Detection of Adsorption Sites in Supported Metal Catalysts." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644620.

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Samarina, Tatiana, and Esther Takaluoma. "Ammonia Recovery from Wastewaters by Adsorption with subsequent Transmembrane Chemical Absorption." In The 6th World Congress on New Technologies. Avestia Publishing, 2020. http://dx.doi.org/10.11159/icepr20.146.

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Reports on the topic "Absorption and adsorption"

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Rogers, V., K. Nielson, and G. Merrell. Radon generation, adsorption, absorption, and transport in porous media. Office of Scientific and Technical Information (OSTI), May 1989. http://dx.doi.org/10.2172/6004618.

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Croft, David T., and David K. Friday. Predicting Absorption Equilibria of Mixtures: Comparison of Potential Theory and Ideal Adsorption Solution Theory. Fort Belvoir, VA: Defense Technical Information Center, October 1999. http://dx.doi.org/10.21236/ada370837.

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Ward, Donald K., Xiaowang Zhou, Richard A. Karnesky, Robert Kolasinski, Michael E. Foster, Konrad Thurmer, Paul Chao, et al. Understanding H isotope adsorption and absorption of Al-alloys using modeling and experiments (LDRD: #165724). Office of Scientific and Technical Information (OSTI), September 2015. http://dx.doi.org/10.2172/1222665.

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Lahav, Ori, Albert Heber, and David Broday. Elimination of emissions of ammonia and hydrogen sulfide from confined animal and feeding operations (CAFO) using an adsorption/liquid-redox process with biological regeneration. United States Department of Agriculture, March 2008. http://dx.doi.org/10.32747/2008.7695589.bard.

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The project was originally aimed at investigating and developing new efficient methods for cost effective removal of ammonia (NH₃) and hydrogen sulfide (H₂S) from Concentrated Animal Feeding Operations (CAFO), in particular broiler and laying houses (NH₃) and hog houses (H₂S). In both cases, the principal idea was to design and operate a dedicated air collection system that would be used for the treatment of the gases, and that would work independently from the general ventilation system. The advantages envisaged: (1) if collected at a point close to the source of generation, pollutants would arrive at the treatment system at higher concentrations; (2) the air in the vicinity of the animals would be cleaner, a fact that would promote animal growth rates; and (3) collection efficiency would be improved and adverse environmental impact reduced. For practical reasons, the project was divided in two: one effort concentrated on NH₃₍g₎ removal from chicken houses and another on H₂S₍g₎ removal from hog houses. NH₃₍g₎ removal: a novel approach was developed to reduce ammonia emissions from CAFOs in general, and poultry houses in particular. Air sucked by the dedicated air capturing system from close to the litter was shown to have NH₃₍g₎ concentrations an order of magnitude higher than at the vents of the ventilation system. The NH₃₍g₎ rich waste air was conveyed to an acidic (0<pH<~5) bubble column reactor where NH₃ was converted to NH₄⁺. The reactor operated in batch mode, starting at pH 0 and was switched to a new acidic absorption solution just before NH₃₍g₎ breakthrough occurred, at pH ~5. Experiments with a wide range of NH₃₍g₎ concentrations showed that the absorption efficiency was practically 100% throughout the process as long as the face velocity was below 4 cm/s. The potential advantages of the method include high absorption efficiency, lower NH₃₍g₎ concentrations in the vicinity of the birds, generation of a valuable product and the separation between the ventilation and ammonia treatment systems. A small scale pilot operation conducted for 5 weeks in a broiler house showed the approach to be technically feasible. H₂S₍g₎ removal: The main goal of this part was to develop a specific treatment process for minimizing H₂S₍g₎ emissions from hog houses. The proposed process consists of three units: In the 1ˢᵗ H₂S₍g₎ is absorbed into an acidic (pH<2) ferric iron solution and oxidized by Fe(III) to S⁰ in a bubble column reactor. In parallel, Fe(III) is reduced to Fe(II). In the 2ⁿᵈ unit Fe(II) is bio-oxidized back to Fe(III) by Acidithiobacillus ferrooxidans (AF).In the 3ʳᵈ unit S⁰ is separated from solution in a gravity settler. The work focused on three sub-processes: the kinetics of H₂S absorption into a ferric solution at low pH, the kinetics of Fe²⁺ oxidation by AF and the factors that affect ferric iron precipitation (a main obstacle for a continuous operation of the process) under the operational conditions. H₂S removal efficiency was found higher at a higher Fe(III) concentration and also higher for higher H₂S₍g₎ concentrations and lower flow rates of the treated air. The rate limiting step of the H₂S reactive absorption was found to be the chemical reaction rather than the transition from gas to liquid phase. H₂S₍g₎ removal efficiency of >95% was recorded with Fe(III) concentration of 9 g/L using typical AFO air compositions. The 2ⁿᵈ part of the work focused on kinetics of Fe(II) oxidation by AF. A new lab technique was developed for determining the kinetic equation and kinetic parameters (KS, Kₚ and mₘₐₓ) for the bacteria. The 3ʳᵈ part focused on iron oxide precipitation under the operational conditions. It was found that at lower pH (1.5) jarosite accumulation is slower and that the performance of the AF at this pH was sufficient for successive operation of the proposed process at the H₂S fluxes predicted from AFOs. A laboratory-scale test was carried out at Purdue University on the use of the integrated system for simultaneous hydrogen sulfide removal from a H₂S bubble column filled with ferric sulfate solution and biological regeneration of ferric ions in a packed column immobilized with enriched AFbacteria. Results demonstrated the technical feasibility of the integrated system for H₂S removal and simultaneous biological regeneration of Fe(III) for potential continuous treatment of H₂S released from CAFO. NH₃ and H₂S gradient measurements at egg layer and swine barns were conducted in winter and summer at Purdue. Results showed high potential to concentrate NH₃ and H₂S in hog buildings, and NH₃ in layer houses. H₂S emissions from layer houses were too low for a significant gradient. An NH₃ capturing system was designed and tested in a 100-chicken broiler room. Five bell-type collecting devices were installed over the litter to collect NH₃ emissions. While the air extraction system moved only 10% of the total room ventilation airflow rate, the fraction of total ammonia removed was 18%, because of the higher concentration air taken from near the litter. The system demonstrated the potential to reduce emissions from broiler facilities and to concentrate the NH₃ effluent for use in an emission control system. In summary, the project laid a solid foundation for the implementation of both processes, and also resulted in a significant scientific contribution related to AF kinetic studies and ferrous analytical measurements.
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Litaor, Iggy, James Ippolito, Iris Zohar, and Michael Massey. Phosphorus capture recycling and utilization for sustainable agriculture using Al/organic composite water treatment residuals. United States Department of Agriculture, January 2015. http://dx.doi.org/10.32747/2015.7600037.bard.

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Objectives: 1) develop a thorough understanding of the sorption mechanisms of Pi and Po onto the Al/O- WTR; 2) determine the breakthrough range of the composite Al/O-WTR during P capturing from agro- wastewaters; and 3) critically evaluate the performance of the composite Al/O-WTR as a fertilizer using selected plants grown in lysimeters and test-field studies. Instead of lysimeters we used pots (Israel) and one- liter cone-tainers (USA). We conducted one field study but in spite of major pretreatments the soils still exhibited high enough P from previous experiments so no differences between control and P additions were noticeable. Due to time constrains the field study was discontinued. Background: Phosphorous, a non-renewable resource, has been applied extensively in fields to increase crop yield, yet consequently has increased the potential of waterway eutrophication. Our proposal impetus is the need to develop an innovative method of P capturing, recycling and reuse that will sustain agricultural productivity while concurrently reducing the level of P discharge from and to agricultural settings. Major Conclusions & Achievements: An innovative approach was developed for P removal from soil leachate, dairy wastewater (Israel), and swine effluents (USA) using Al-based water treatment residuals (Al- WTR) to create an organic-Al-WTR composite (Al/O-WTR), potentially capable of serving as a P fertilizer source. The Al-WTR removed 95% inorganic-P, 80% to 99.9% organic P, and over 60% dissolved organic carbon from the agro-industrial waste streams. Organic C accumulation on particles surfaces possibly enhanced weak P bonding and facilitated P desorption. Analysis by scanning electron microscope (SEM- EDS), indicated that P was sparsely sorbed on both calcic and Al (hydr)oxide surfaces. Sorption of P onto WW-Al/O-WTR was reversible due to weak Ca-P and Al-P bonds induced by the slight alkaline nature and in the presence of organic moieties. Synchrotron-based microfocused X-ray fluorescence (micro-XRF) spectrometry, bulk P K-edge X-ray absorption near edge structure spectroscopy (XANES), and P K-edge micro-XANES spectroscopy indicated that adsorption was the primary P retention mechanism in the Al- WTR materials. However, distinct apatite- or octocalciumphosphatelike P grains were also observed. Synchrotron micro-XRF mapping further suggested that exposure of the aggregate exteriors to wastewater caused P to diffuse into the porous Al-WTR aggregates. Organic P species were not explicitly identified via P K-edge XANES despite high organic matter content, suggesting that organic P may have been predominantly associated with mineral surfaces. In screen houses experiments (Israel) we showed that the highest additions of Al/O-WTR (5 and 7 g kg⁻¹) produced the highest lettuce (Lactuca sativa L. var. longifolial) yield. Lettuce yield and P concentration were similar across treatments, indicating that Al/O- WTR can provide sufficient P to perform similarly to common fertilizers. A greenhouse study (USA) was utilized to compare increasing rates of swine wastewater derived Al/O-WTR and inorganic P fertilizer (both applied at 33.6, 67.3, and 134.5 kg P₂O₅ ha⁻¹) to supply plant-available P to spring wheat (TriticumaestivumL.) in either sandy loam or sandy clay loam soil. Spring wheat straw and grain P uptake were comparable across all treatments in the sandy loam, while Al/O-WTR application to the sandy clay loam reduced straw and grain P uptake. The Al/O-WTR did not affect soil organic P concentrations, but did increase phosphatase activity in both soils; this suggests that Al/O-WTR application stimulated microorganisms and enhance the extent to which microbial communities can mineralize Al/O-WTR-bound organic P. Implications: Overall, results suggest that creating a new P fertilizer from Al-WTR and agro-industrial waste sources may be a feasible alternative to mining inorganic P fertilizer sources, while protecting the environment from unnecessary waste disposal.
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