Thematische Bibliographien / Treatment of liquid digestate

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Auswahl der wissenschaftlichen Literatur zum Thema „Treatment of liquid digestate“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 17. Februar 2022

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Zeitschriftenartikel zum Thema "Treatment of liquid digestate"

Akhiar, Afifi, Felipe Guilayn, Michel Torrijos, Audrey Battimelli, Abd Halim Shamsuddin und Hélène Carrère. „Correlations between the Composition of Liquid Fraction of Full-Scale Digestates and Process Conditions“. Energies 14, Nr. 4 (12.02.2021): 971. http://dx.doi.org/10.3390/en14040971.

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Fast development of centralized agricultural biogas plants leads to high amounts of digestate production. The treatment and disposal of liquid fractions after on-site digestate solid–liquid separation remains problematic due to their high organic, nutrient and aromatic contents. This work aims to study the variability of the remaining compounds in the digestate liquid fractions in relation to substrate origin, process parameters and solid–liquid separation techniques. Twenty-nine digestates from full-scale codigestion biogas plants and one waste activated sludge (WAS) digestate were collected and characterized. This study highlighted the combined effect of the solid–liquid separation process and the anaerobic digestion feedstock on the characteristics of liquid fractions of digestates. Two major clusters were found: (1) liquid fractions from high efficiency separation process equipment (e.g., centrifuge and others with addition of coagulant, flocculent or polymer) and (2) liquid fractions from low efficiency separation processes (e.g., screw press, vibrating screen and rotary drum), in this latter case, the concentration of chemical oxygen demand (COD) was associated with the proportion of cow manure and energy crops at biogas plant input. Finally, SUVA254, an indicator for aromatic molecule content and the stabilization of organic matter, was associated with the hydraulic retention time (HRT).

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Gienau, Tobias, Artjom Ehrmanntraut, Matthias Kraume und Sandra Rosenberger. „Influence of Ozone Treatment on Ultrafiltration Performance and Nutrient Flow in a Membrane Based Nutrient Recovery Process from Anaerobic Digestate“. Membranes 10, Nr. 4 (04.04.2020): 64. http://dx.doi.org/10.3390/membranes10040064.

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Membrane filtration of biological suspensions is frequently limited by fouling. This mechanism is well understood for ultrafiltration of activated sludge in membrane bioreactors. A rather young application of ultrafiltration is the recovery of nutrients from anaerobic digestates, e.g., from agricultural biogas plants. A process chain of solid/liquid separation, ultrafiltration, and reverse osmoses separates the digestate into different products: an organic N-P-fertilizer (solid digestate), a recirculate (UF retentate), a liquid N-K-fertilizer (RO retentate) and water. Despite the preceding particle removal, high crossflow velocities are required in the ultrafiltration step to overcome fouling. This leads to high operation costs of the ultrafiltration step and often limits the economical application of the complete process chain. In this study, under-stoichiometric ozone treatment of the ultrafiltration feed stream is investigated. Ozone treatment reduced the biopolymer concentration and apparent viscosity of different digestate centrates. Permeabilities of centrate treated with ozone were higher than without ozone treatment. In a laboratory test rig and in a pilot plant operated at the site of two full scale biogas plants, ultrafiltration flux could be improved by 50–80% by ozonation. Nutrient concentrations in the fertilizer products were not affected by ozone treatment.

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Rahmat, Budy, Ida Hodiyah, Apip Supriadi, Memet Hikmat und Gilang Purnama. „Design of biogas digester with thermophilic pretreatment for reducing fruits wastes“. International Journal of Recycling of Organic Waste in Agriculture 8, S1 (01.10.2019): 291–97. http://dx.doi.org/10.1007/s40093-019-00301-y.

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Abstract Purpose This study aimed to design a biogas digester that works thermophilically and mesophilically and tested its performance to produce biogas and digestate. Methods This study used some experimental methods, which consists of: (1) design and construction process of the digester which can facilitate the thermophilic process as a pretreatment of the feedstock and the anaerobic digestion process of the substrate; (2) determination of the quantity of biogas, liquid digestate, and compost; and (3) testing digestate quality as a liquid organic fertilizer for Ipomoea reptans. Results The built biogas digester was able to accommodate thermophilic digestion that runs intensely in the pretreatment tank, where the complex organic compounds, namely cellulose and hemicellulose, decomposed intensively, so that it becomes a suitable substrate. As raw material, every 4 kg of banana waste, can produce biogas, digestate and dry compost of 10,200 cm3 (highest yield), 5900 mL, and 1420 g, respectively. The highest Ipomoea reptans growth was achieved by digestate treatment from banana waste. Conclusions Thermophilic pretreatment could shorten the processing time to 3 days. Digestate treatment as a liquid organic fertilizer is able to provide a better supply of nutrients for plants.

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Camilleri-Rumbau, Maria Salud, Kelly Briceño, Lene Fjerbæk Søtoft, Knud Villy Christensen, Maria Cinta Roda-Serrat, Massimiliano Errico und Birgir Norddahl. „Treatment of Manure and Digestate Liquid Fractions Using Membranes: Opportunities and Challenges“. International Journal of Environmental Research and Public Health 18, Nr. 6 (17.03.2021): 3107. http://dx.doi.org/10.3390/ijerph18063107.

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Manure and digestate liquid fractions are nutrient-rich effluents that can be fractionated and concentrated using membranes. However, these membranes tend to foul due to organic matter, solids, colloids, and inorganic compounds including calcium, ammonium, sodium, sulfur, potassium, phosphorus, and magnesium contained in the feed. This review paper is intended as a theoretical and practical tool for the decision-making process during design of membrane-based systems aiming at processing manure liquid fractions. Firstly, this review paper gives an overview of the main physico-chemical characteristics of manure and digestates. Furthermore, solid-liquid separation technologies are described and the complexity of the physico-chemical variables affecting the separation process is discussed. The main factors influencing membrane fouling mechanisms, morphology and characteristics are described, as well as techniques covering membrane inspection and foulant analysis. Secondly, the effects of the feed characteristics, membrane operating conditions (pressure, cross-flow velocity, temperature), pH, flocculation-coagulation and membrane cleaning on fouling and membrane performance are presented. Finally, a summary of techniques for specific recovery of ammonia-nitrogen, phosphorus and removal of heavy metals for farm effluents is also presented.

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Piccoli, Ilaria, Giuseppe Virga, Carmelo Maucieri und Maurizio Borin. „Digestate Liquid Fraction Treatment with Filters Filled with Recovery Materials“. Water 13, Nr. 1 (24.12.2020): 21. http://dx.doi.org/10.3390/w13010021.

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Constructed wetlands (CWs) represent a green technology for digestate liquid fraction (DLF) treatment. However, previous research has warned about their performance when treating wastewater with high suspended solid and organic loads. In addition, the high NH4-N concentration typical of this wastewater can compromise vegetation establishment and activity. In view of this, a digestate pretreatment is needed. This study aimed to test the performance of filters filled with recovery materials, such as brick and refractory material, for DLF pretreatment. The effect on DLF physical (electrical conductivity, pH, dissolved oxygen, and temperature) and chemical (total nitrogen, ammonia–nitrogen, nitrate–nitrogen, total phosphorus, soluble phosphorus, and chemical oxygen demand) characteristics was monitored during eight weekly cycles. The effect of filtration on total nitrogen and ammonia–nitrogen removal began after about one month of loading, suggesting that an activation period is necessary for bacteria. For effective N removal, the presence of multiple digestate recirculations per day through the filters appears mandatory to guarantee the alternation of nitrification and denitrification conditions. For P removal, filling material particle size appeared to be more important than its composition. Unclear performances were observed considering chemical oxygen demand. Further studies on filling media and microbial community interactions, and the long-term efficiency of filters, are desirable.

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Jamison, Jacqueline, Samir Kumar Khanal, Nhu H. Nguyen und Jonathan L. Deenik. „Assessing the Effects of Digestates and Combinations of Digestates and Fertilizer on Yield and Nutrient Use of Brassica juncea (Kai Choy)“. Agronomy 11, Nr. 3 (09.03.2021): 509. http://dx.doi.org/10.3390/agronomy11030509.

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Anaerobic digestion of organic wastes produces solid residues known as digestates, which have potential as a fertilizer and soil amendment. The majority of research on digestate focuses on their fertilizer value. However, there is a lack of information about additional effects they may have on plant growth, both positive and negative. Understanding the effects of digestate on plant growth is essential to optimizing their use in agriculture and helping close the loop of material and energy balances. This greenhouse study evaluated the effects of two different digestates, a food waste digestate (FWD) and a lignocellulosic biomass digestate (LBD); a liquid fertilizer; and various combinations of fertilizer and digestates on plant growth, nutrient uptake and nutrient use efficiency (NUE) of Brassica juncea (kai choy) plants. It also evaluated potential negative attributes of the digestates, including salinity and possible biohazards. Combinations of LBD and fertilizer performed as well or slightly better than the fertilizer control for most parameters, including aboveground biomass and root length. These same combinations had significantly higher nitrogen use efficiency than the fertilizer control. Inhibitory effects were observed in 100% LBD treatments, likely due to the high electrical conductivity of the media from digestate application. Based on this research, LBD could partially replace mineral fertilizers for kai choy at up to 50% of the target nitrogen rate and may lead to increased plant growth beyond mineral fertilizers. FWD could replace up to 100% of the target nitrogen application, without causing significant negative effects on plant growth. Increasing the use of digestates in agriculture will provide additional incentives for the anaerobic digestion process, as it produces two valuable products: biogas for energy and digestate for fertilizer.

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Carney, K. N., M. Rodgers, P. G. Lawlor und X. Zhan. „Treatment of separated piggery anaerobic digestate liquid using woodchip biofilters“. Environmental Technology 34, Nr. 5 (März 2013): 663–70. http://dx.doi.org/10.1080/09593330.2012.710408.

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Logan, Mohanakrishnan, und Chettiyappan Visvanathan. „Management strategies for anaerobic digestate of organic fraction of municipal solid waste: Current status and future prospects“. Waste Management & Research: The Journal for a Sustainable Circular Economy 37, Nr. 1_suppl (Januar 2019): 27–39. http://dx.doi.org/10.1177/0734242x18816793.

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Anaerobic digestion has emerged as the preferred treatment for organic fraction of municipal solid waste. Digestate management strategies are devised not only for safe disposal but also to increase the value and marketability. Regulations and standards for digestate management are framed to address the pollution concerns, conserve vulnerable zones, prevent communicable diseases, and to educate on digestate storage and applications. Regulations and the desired end uses are the main drivers for the enhancement of digestate through pretreatment, in vessel cleaning, and post-digestion treatment technologies for solid and liquid fractions of digestate. The current management practice involves utilization of digestate for land application either as fertilizer or soil improver. Prospects are bright for alternative usage such as microalgal cultivation, biofuel and bioethanol production. Presently, the focus of optimization of the anaerobic digestion process is directed only towards enhancing biogas yield, ignoring the quality of digestate produced. A paradigm shift is needed in the approach from ‘biogas optimization’ to ‘integrated biogas–digestate optimization’.

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Crutchik, Dafne, Gustavo Rodríguez-Valdecantos, Gabriela Bustos, Javier Bravo, Bernardo González und Claudia Pabón-Pereira. „Vermiproductivity, maturation and microbiological changes derived from the use of liquid anaerobic digestate during the vermicomposting of market waste“. Water Science and Technology 82, Nr. 9 (04.09.2020): 1781–94. http://dx.doi.org/10.2166/wst.2020.427.

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Abstract Recently, it has been suggested that the liquid fraction of anaerobic digestate, derived from the treatment of wastewater and solid wastes, could be used in vermicomposting as a solution to its disposal, and even for its valorization. Nevertheless, the literature does not provide enough information about its impact on the process of vermicomposting itself and on the final quality of the end-product. In this study, the effect of different doses of digestate in the vermicomposting process treating market waste is assessed measuring earthworm population dynamics, the bacterial community succession present in the vermibeds, as well as maturation and the end-quality of the vermicompost. Our results show that the addition of liquid digestate to the vermibeds increased the earthworms biomass, i.e. 71%, 94% and 168% in control, and vermibeds with 30% and 60% digestate, respectively. Further, the increase in the amount of N in the vermicompost decreased as the digestate addition increased, i.e. 75%, 8%, 3%. The maturity achieved was high in all treatments as shown by the C/N ratio, 7.98, 7.40 and 10.20, and the high seed germination rate, above 90%. Finally, the succession of the microbial community was not disturbed and compositional stabilization was reached after 92 days.

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Seruga, Przemysław, Małgorzata Krzywonos und Marta Wilk. „Treatment of By-Products Generated from Anaerobic Digestion of Municipal Solid Waste“. Waste and Biomass Valorization 11, Nr. 9 (01.10.2019): 4933–40. http://dx.doi.org/10.1007/s12649-019-00831-6.

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Abstract Purpose This study aimed to examine the possibilities of the treatment of the by-products generated in the anaerobic digestion (AD) of the organic fraction of municipal solid waste (OFMSW): oxygen stabilization (composting) of the solid digestate and pretreatment with air stripping of the effluents (liquid digestate and leachate from maturation field and reactors from composting). Methods Oxygen stabilization (OS) was performed in full-scale in a mechanical–biological treatment (MBT) plant using three different methods, using an open field or enclosed box reactor with aeration. The ammonia stripping was performed in a pilot-scale installation using effluents from AD (liquid digestate) and OS (leachate from maturation field and reactors). Results The lowest self-heating possibility after the OS was recorded at 28.5 °C, which proves that the most stabilized was the sample after processing with structuring material addition. Due to air stripping, the highest efficiency of ammonium ions removal was noted at the level of 50.6%, with an initial pH value of 10.5, after 12 h. Among the examined factors pH value was found to be significant [the determination coefficient (R2) of 0.93]. Conclusions The oxygen stabilization of the digestate requires the structuring material addition before being placed in the reactor with aeration. The inert fraction from the ballistic separation of the OFMSW can be an interesting solution, as required structuring material. Air stripping as the effluents pre-treatment step can meet the MBT plants expectations. Graphic Abstract

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Dissertationen zum Thema "Treatment of liquid digestate"

Uhlířová, Marcela. „Využití membrán pro zpracování odpadních vod ze zemědělství“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443232.

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This thesis deals with an agricultural wastewater treatment (liquid digestate) by membrane technology. There is a fundamental description of characteristics of membrane technology with regard to application of agricultural wastewater treatment in this thesis. Experimental device for treatment of liquid digestate is designed and it consists of three steps – microfiltration, ultrafiltration and reverse osmosis. The first step consists of four filters with different pore sizes (80, 25, 10 and 5 µm). The second step is ultrafiltration and the third and key step is reverse osmosis. In the final step monovalent ions such as NH4+ are separated. Reverse osmosis consists of two stage system which results in higher recovery. Three experiments were carried out in order to verify the efficiency of separation dissolved solids.

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Heger, Jan. „Získávání fosforu z fugátu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442835.

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The focus of this thesis is the posibility of obtaining phosphorus from liquid digestate. The theoretical part of the thesis is focused on summarizing the current situation regarding phosphorus recovery. The research summarizes the essential information about the method of struvite precipitation, by which phoshphorus is obtained in the form of struvite, which can be further used as a fertilizer. Based on the process information, an experimental device was designed to obtain phosphorus in the form of struvite, corresponding to industry standards. It is a cylindrical vessel with a conical bottom, in which the liquid digestate with the chemicals is mixed with a stirrer. The functionality of the device was tested experimentally on the created device. The results of the experiment were analyzed by XPS method, which confirmed the formation of struvite. For future operation, modifications of the device and pre-treatment of the liquid digestate were proposed, which could improve the whole process and its results.

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Budín, Oto. „Zpracování fermentačních zbytků z bioplynových stanic“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318762.

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This diploma thesis deals with dewatering technologies of fermentation residues from biogas plants and aims to design an integration of selected technology into the biogas plant. Fermentation residues (or digestate), which are a by-product of anaerobic biomass fermentation in biogas plants, contain a certain amount of nutrients and are usually used as agricultural fertilizers. However, the high-water content in digestate and the associated low nutrient concentration increase the cost of its storage and transport. Dewatering of fermented material could help reduce these costs. The main part of this work included the design of an integration of the selected dewatering technology into the biogas plant – its placement in a process, an addition of necessary appliances, the influence on material and energy flows. In this case, the fermentation residues are processed in two phases. First, a separation of the solid and the liquid fraction by a screw press. The second step is to thicken the liquid digestate by evaporation in a multistage evaporator. Evaluation of the design of a dewatering technology, including its impact on the economy of the biogas plant, is also part of the diploma thesis.

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Knoop, Christine [Verfasser], Thomas [Gutachter] Raab und Christina [Gutachter] Dornack. „Anaerobic treatment of municipal organic waste from separate collection : digestate properties and substance flows during two-stage digestion and subsequent aerobic treatment / Christine Knoop ; Gutachter: Thomas Raab, Christina Dornack“. Cottbus : BTU Cottbus - Senftenberg, 2019. http://d-nb.info/1185489894/34.

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Liman, Martin. „Výměna hmoty kapalina-pára v procesech stripování“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-445374.

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This diploma thesis deals with the solution of ammonia separation from waste raw materials of agricultural production. It focuses on determining the efficiency of desorption from an experimental stripping device depending on the measurement temperature. Ammonia water solutions and liquid digestate samples from technical practice were used to verify the functionality of the equipment. Increasing separation efficiency with increasing temperature has been demonstrated. The device was gradually improved during the measurement for a better profitability of the separation process. The results of the experiments are discussed concerning the theoretical assumptions and compared with other methods of ammonia separation.

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Tolley, M. R. „The biological treatment of liquid wastes containing heavy metals“. Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335844.

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Cao, Xinjin. „Heat treatment of liquid metal : precipitation and sedimentation processing of liquid Al-11.5Si-0.4Mg alloy“. Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369168.

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Ang, Choon Jek, und choonjej@yahoo com au. „Treatment of printing ink wastewater using high liquid carryover mode function“. Swinburne University of Technology. Environment and Biotechnology Centre, 2005. http://adt.lib.swin.edu.au./public/adt-VSWT20051017.115207.

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The aim of this project is to investigate the feasibility of the use of a novel process of high liquid carryover (HLC) mode flotation to treat wastewater from a cardboard printing and coating plant. This is conducted by characterising the process conditions with the purpose of achieving a set condition that have a low susceptibility to variability in the wastewater composition. Information pertaining to the surface and physical characteristics of the solid contained in the wastewater sample were used to explain the flotation outcomes. Fe(II) was found to be more suited for industrial use as coagulant over the more commonly known coagulants, Al(III) and Fe(III), as it has the advantages of having a constant optimum flotation pH (6.5) regardless of wastewater characteristics, as well as having a much lower detrimental effect on the flotation outcome when present in excess of the minimum requirement for flocculation of wastewater solids. This allows the setting of a coagulant dose (5 mM) that will treat both high and low solids content wastewater samples. The use of cationic surfactant (CTAB) was found to require lower coagulant dosages compared to those required for anionic (SDS) or non-ionic (TericG12A8) surfactants in order to achieve good flotation outcomes. A CTAB concentration of 300 ppm was required to achieve a stable foam that can sustain for a prolonged period to allow solid (in foam)/liquid separation. The optimum batch mode conditions for HLC flotation were found to be pH 6.5, 5 mM Fe(II) and 300 ppm CTAB. This was found to correspond to a small and negative electrophoretic mobility at the wastewater solid surface and large floc size. Batch mode flotation of individual ink components under the optimum conditions for industrial wastewater treatment revealed that the presence of large quantities of either blue or yellow inks in the wastewater can lead to poor removal. Their combined presence, however, did not have detrimental effects. Continuous mode flotation at 5 mM Fe(II), 300 ppm CTAB and pH 6.5 was found to remove above 96% of contaminants at cell residence times of 6 minutes and 88% of contaminants at cell residence times of 1.5 minute. Greater than 87% of the initial wastewater volumes were recovered as treated effluent (i.e. < 13% disposed as waste foam sludge), yielding a waste foam sludge containing between 12 and 17% solids. The best flotation outcomes were achieved when all the wastewater volume entering the flotation cell leaves the cell with the foam.

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Grima, N. M. M. „Kinetic and mass transfer studies of ozone degradation of organics in liquid/gas-ozone and liquid/solid-ozone systems“. Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3351.

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This work was concerned with the determination of mass transfer and kinetic parameters of ozone reactions with four organic compounds from different families, namely reactive dye RO16, triclocarban, naphthalene and methanol. In order to understand the mechanisms of ozone reactions with the organic pollutants, a radical scavenger (t-butanol) was used and the pH was varied from 2 to 9. Ozone solubility (CAL*) is an important parameter that affects both mass transfer rates and chemical reaction kinetics. In order to determine accurate values of the CAL* in the current work, a set of experiments were devised and a correlation between CAL* and the gas phase ozone concentration of the form CAL*(mol/L) = 0.0456 CO3 (g/m3 NTP) was obtained at 20°C. This work has also revealed that t-butanol did not only inhibit hydroxyl radical reactions but also increased mass transfer due to it increasing the specific surface area (aL). Values of the aL were determined to be 2.7 and 3.5 m2/m3 in the absence and presence of t-butanol respectively. It was noticed that the volumetric mass transfer coefficient (kLa) has increased following the addition of t-butanol. Ozone decomposition was studied at pH values of 2 to 9 in a 500 mL reactor initially saturated with ozone. Ozone decomposition was found to follow a second order reaction at pH values less than 7 whilst it was first order at pH 9. When the t-butanol was added, the decomposition of ozone progressed at a lower reaction order of 1.5 for pH values less than 7 and at the same order without t-butanol at pH 9. Ozone decomposition was found significant at high pHs due to high hydroxide ion concentration, which promotes ozone decomposition at high pHs. The reaction rate constant (k) of RO16 ozonation in the absence of t-butanol was determined. The result suggests that RO16 degradation occurs solely by molecular ozone and indirect reactions by radicals are insignificant. The chemical reaction of triclocarban with ozone was found to follow second order reaction kinetics. The degradation of naphthalene using the liquid/gas-ozone (LGO) system was studied. This result showed that hydroxyl radicals seemed to have limited effect on naphthalene degradation which was also observed when a radical scavenger (t-butanol) was used. Reaction rate constants were calculated and were found around 100 times higher than values reported in the literature due to differences in experimental conditions. From the results of the experimental investigation on the degradation of methanol by ozone it was found that the rate constant (k) of the degradation reaction increased at pH 9. The reaction stoichiometry was found to have a value of 1 mol/mol. The two steps of the liquid/solid-ozone (LSO) system were studied on beds of silica gel and a zeolitic material (D915) and the ozone adsorption process was modeled and found that particle rate controls ozone adsorption step but liquid rate controls the water treatment step. Ozone desorption with pure deionised water was studied. The water flow rate was found to accelerate the desorption rates but pH was found to decrease the desorption rates. In contrast, the effect of pH was insignificant in the presence of t-butanol. Determination of the adsorption isotherms for RO16, naphthalene and methanol revealed that RO16 did not exhibit adsorption on silica gel, but both naphthalene and methanol showed adsorption on D915 described by Langmuir model.

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Yawson, Selina Kuukuwa. „Dairy manure treatment using solid-liquid separation and microwave enhanced advanced oxidation process“. Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/29232.

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Dairy manure treatment, using solid-liquid separation and microwave enhanced advanced oxidation process (MW/H₂O₂-AOP), was investigated. The objectives of the research were to determine: 1) the nutrient and metal composition of solid and liquid fractions of raw dairy manure following solid-liquid separation, 2) the effects of MW/H₂O₂-AOP operating factors of temperature, hydrogen peroxide (H₂O₂) dosage, acid concentration and heating time on sugar production and nutrient release from solid dairy manure. Solid-liquid separation of raw dairy manure, using a 1mm laboratory sieve, showed that solid fractions had a higher composition of TS and volatile solids (VS), while the liquid fractions were richer in nutrients and metals. Laboratory separation by screening alone was not effective in removing high amounts of nutrients and solids from the raw manure. Screening experiments were conducted using cellulose fibers to study the effects of temperature, acid concentration, H₂O₂ dosage and heating time on sugar production, with the aim of applying the results to dairy manure lignocellulosic material. Sugar production increased when acid concentration was increased from 1% to 3%, but decreased with an increase to 10%. More sugar was produced at 160°C compared to 120°C. Sugar production decreased with increasing time. Microwave irradiation of solid dairy manure at pH 2, temperatures of 80, 120 and 160°C, H₂O₂ dosages of 0 to 0.50 mL, and heating times of 10 to 20 min, showed that more sugars were released at higher temperatures. Temperature and hydrogen peroxide dosage were identified as the most important factors affecting solubilization of phosphorus and ammonia. Subsequently, a two-stage acid hydrolysis process, using MW/H₂O₂-AOP, was used to investigate sugar production and solubilization of phosphorus and ammonia from solid dairy manure at: 3% acid concentration, 120 and 160°C, 0 and 2 mL H₂O₂ and heating times of 20 and 60min. To enhance sugar production from solid dairy manure, the microwave should be operated at higher temperatures and shorter heating times with no H₂O₂. For ammonia and phosphorus solubilization, higher temperatures and longer heating times, in the presence of H₂O₂, would be advantageous. MW/H₂O₂-AOP is therefore an efficient means for treating diary manure for nutrient recovery.

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Bücher zum Thema "Treatment of liquid digestate"

Barton, Paul. Treatment of liquid/solid hazardous wastes. University Park, PA (501 Keller Bldg., University Park 16802): Pennsylvania Technical Assistance Program, Pennsylvania State University, 1987.

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Hoheisel, C. Theoretical treatment of liquids and liquid mixtures. Amsterdam: Elsevier, 1993.

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L, Cho Young, Hrsg. Plasma discharge in liquid: Water treatment and applications. Boca Raton: Taylor & Francis, 2012.

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service), ScienceDirect (Online, und Knovel (Firm), Hrsg. Liquid membranes: Principles and applications in chemical separations and wastewater treatment. Amsterdam: Elsevier Science, 2009.

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NATO Advanced Research Workshop on the Conversion of Liquid Rocket Fuels (2003 Baku, Azerbaijan). The conversion of liquid rocket fuels: Risk assessment, technology and treatment options for the conversion of abandoned liquid ballistic missile propellants (fuels and oxidizers) in Azerbaijan / edited by Wolfgang P.W. Spyra and Kay Winkelmann. Dordrecht: Kluwer Academic Publishers, 2004.

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Technical Meeting on Radiation Processing of Gaseous and Liquid Effluents (2004 Sofia, Bulgaria). Radiation treatment of gaseous and liquid effluents for contaminant removal: Proceedings of a technical meeting held in Sofia, Bulgaria, 7-10 September 2004. Vienna: International Atomic Energy Agency, 2005.

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Wastewater Treatment Fundamentals I: Liquid Treatment. Water Environment Federation, 2018.

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Liquid Treatment Process Symposia (C2003). Water Environment Federation, 1991.

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Gruzleski, John E., und Bernard Closset. Treatment of Liquid Aluminum-Silicon Alloys. Amer Foundry Society, 1990.

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Lewis und Heppell. Continuous Heat Treatment of Liquid & Particulate Foods. Aspen Pub, 1999.

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Mehr Quellen

Buchteile zum Thema "Treatment of liquid digestate"

Vidal, Joana, Alvaro Taus und Clara Montagut. „Dynamic Treatment Stratification Using ctDNA“. In Tumor Liquid Biopsies, 263–73. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26439-0_14.

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Ringer, Andrew J., und Ralph Rahme. „Aneurysm Treatment with Liquid Embolics“. In Cerebrovascular and Endovascular Neurosurgery, 321–33. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-65206-1_27.

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Ibanez, Jorge G., Margarita Hernandez-Esparza, Carmen Doria-Serrano, Arturo Fregoso-Infante und Mono Mohan Singh. „Electrochemical Treatment of Liquid Wastes“. In Environmental Chemistry, 140–46. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-49493-7_13.

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Chughtai, M. I. D., und Khurshid Ahmed. „Biological Treatment of Liquid Effluents“. In Biological Degradation of Wastes, 47–84. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3664-8_3.

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Kataki, Sampriti, Gunajit Dev Sarma, Dipam Patowary und D. C. Baruah. „Prospects of Utilization of Liquid Fraction of Biogas Digestate as Substrate Supplement for Mushroom Cultivation“. In Advances in Waste Management, 445–65. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0215-2_32.

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Othman, N. „Emulsion Liquid Membrane for Wastewater Treatment“. In Encyclopedia of Membranes, 684–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_2092.

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Othman, N. „Emulsion Liquid Membrane for Wastewater Treatment“. In Encyclopedia of Membranes, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-40872-4_2092-1.

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Gelfgat, Yu, V. Polischuk, L. Puzhaylo und M. Sorkin. „Gas Bubbles Motion during Vacuum Treatment of Liquid Aluminium in MDV-Type Devices“. In Liquid Metal Magnetohydrodynamics, 145–51. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0999-1_18.

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Robles Hernandez, Francisco C., Jose Martin Herrera Ramírez und Robert Mackay. „Liquid and Semisolid Melt Treatment: Electromagnetic Stirring“. In Al-Si Alloys, 111–32. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58380-8_5.

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Weiss, Kenneth R. „Liquid and Solid Waste Treatment and Disposal“. In Power Plant Engineering, 521–50. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0427-2_16.

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Konferenzberichte zum Thema "Treatment of liquid digestate"

Victor B Johnson und Patrick K Hartzell. „Mechanical/Chemical Liquid Solid Separation of Anaerobic Digestate“. In 2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2010. http://dx.doi.org/10.13031/2013.29987.

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RUSANOWSKA, Paulina, Magda DUDEK, Marcin ZIELIŃSKI und Marcin DĘBOWSKI. „BIOGAS POTENTIAL OF DIGESTATE AFTER FERMENTATION OF SIDA HERMAPHRODITA SILAGE“. In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.194.

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Lignocellulosic biomass is one of the most widely used substrate in methane digestion. Among plants with a high yield potential, Sida hermaphrodita is particularly noteworthy, due to Sida can be grown on low quality soils and its utilization for energy purposes is not competitive with food crops. Methane fermentation of biomass with such a complex structure usually requires application of pre-treatment methods for efficient utilization of its cellulose and hemicellulose. It is economically justified to control of digestate if substrate was efficiently used. The study aimed to measure biogas potential of digestate after fermentation of Sida hermaphrodita silage. The post-fermentation of two samples of digestate from the reactors operated at organic compounds loading 2 kg/(m3∙d) – S1 and 3 kg/(m3∙d) – S2 was performed. Hydraulic retention time in these reactors was 50 d and 33 d, respectively. Biogas potential of fermented sludge was measured with the use of AMPTS II (Bioprocess control). Biogas production was 0.012 L/g TS and 0.031 L/g TS from digestate’s S1 and S2, respectively. The methane content in biogas was 15% from digestate S1 and 50% from digestate S2. The obtained results suggest that digestate from reactor with organic compounds loading of 3 kg/(m3∙d) still has high biogas potential, and hydraulic retention time in this reactor should be prolonged.

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Wang, Qichen, Brendan T. Higgins, Haodong Ji und Dongye Zhao. „Improved microalgae biomass production and wastewater treatment: Pre-treating municipal anaerobic digestate for algae cultivation“. In 2018 Detroit, Michigan July 29 - August 1, 2018. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2018. http://dx.doi.org/10.13031/aim.201801333.

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Grillo, F., I. Piccoli, I. Furlanetto, F. Ragazzi, S. Obber und F. Morari. „5. A farm scale evaluation of variable rate application (VRA) for improving liquid digestate agronomic performances“. In 13th European Conference on Precision Agriculture. The Netherlands: Wageningen Academic Publishers, 2021. http://dx.doi.org/10.3920/978-90-8686-916-9_5.

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Soucek, Radek. „CONTRIBUTION TO THE STUDY OF USABILITY OF POLYMER ORGANIC FLOCCULANTS IN THE PROCESS OF SOLID AND LIQUID DIGESTATE PHASE SEPARATION“. In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b41/s17.019.

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„Comparison of digestate from solid anaerobic digesters and effluent from liquid anaerobic digesters as inocula for solid state anaerobic digestion of yard trimming“. In 2015 ASABE International Meeting. American Society of Agricultural and Biological Engineers, 2015. http://dx.doi.org/10.13031/aim.20152190124.

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Groele, Joseph R., und John E. Foster. „Plasma-Liquid Interaction For Treatment Of Hydraulic Fracturing Wastewater“. In 2017 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2017. http://dx.doi.org/10.1109/plasma.2017.8496056.

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KRCMA, F., und Z. KOZAKOVA. „PREPARATION AND SURFACE TREATMENT OF NANOMATERIALS IN PLASMA-LIQUID SYSTEMS“. In NONEQUILIBRIUM PROCESSES. TORUS PRESS, 2018. http://dx.doi.org/10.30826/nepcap2018-1-01.

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Iyama, Hirofumi, K. Raghukandan und Shigeru Itoh. „The Design of Supercritical Liquid Pipe for Organic Material Treatment“. In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-1978.

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The supercritical liquid discovered in 1821, the specific character was known for many years. However, it began to be used industrially in Japan after the oil shock of the second half of the 1970s. Development of the process which extracts the high ingredient of added value focusing on fields, such as food and medical supplies, using the super-criticality CO2 was furthered at first in Germany. The supercritical water attracts attention with a rise of the concern of the latest resources problem or an environmental problem. Moreover, the process development such as recycling, decomposition of dioxin and PCB and oilizing and monomerizing of a waste plastic have been active. In recent years, use of the woody biomass is briskly performed on Europe. Since there is the woody biomass abundantly, it tends to go into a hand. In this paper, the supercritical liquid is described briefly. Next, the experiment of supercritical treatment of wood is described. And finally, we proposed using the explosive welding technique for the development of pressure vessel and performed the numerical simulation.

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Zhao, Juan. „Low-Level Liquid Waste Treatment System Technical Design in China“. In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15787.

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Radioactive wastes are produced within the nuclear fuel cycle operations (uranium conversion and enrichment, fuel fabrication and spent fuel reprocessing). Evaporation is a proven method for the treatment of liquid radioactive waste providing both good decontamination and high concentration. Two technical designs of nuclear facilities for low-level liquid radioactive waste treatment are presented in the paper and the evaluation of both methods, as well. One method is two-stage evaporation, widely used in the People’s Republic of China’s nuclear facilities; another is two evaporator units and subsequently ion exchange, which is based on the experience gained from TIANWAN nuclear power plant. Primary evaporation and ion exchange ensure the treated waste water discharged to environment by controlling the condensate radioactivity, and secondary evaporation is to control concentrates in a limited salt concentration.

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Berichte der Organisationen zum Thema "Treatment of liquid digestate"

Worland, Vincent Peter. LANL Radioactive Liquid Waste Treatment Facility. Office of Scientific and Technical Information (OSTI), Januar 2020. http://dx.doi.org/10.2172/1583148.

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Baker, M. N., und H. M. Houston. Liquid waste treatment system. Final report. Office of Scientific and Technical Information (OSTI), Juni 1999. http://dx.doi.org/10.2172/754794.

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LUECK, K. J. Waste Treatment Plant Liquid Effluent Treatability Evaluation. Office of Scientific and Technical Information (OSTI), Juni 2001. http://dx.doi.org/10.2172/807138.

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Haagenstad, H. T., G. Gonzales und I. L. Suazo. Radioactive Liquid Waste Treatment Facility: Environmental Information Document. Office of Scientific and Technical Information (OSTI), November 1993. http://dx.doi.org/10.2172/10103607.

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Biggs, J. Biological Information Document, Radioactive Liquid Waste Treatment Facility. Office of Scientific and Technical Information (OSTI), Dezember 1995. http://dx.doi.org/10.2172/10103622.

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Del Signore, John C. Radioactive Liquid Waste Treatment Facility Discharges in 2014. Office of Scientific and Technical Information (OSTI), Juli 2015. http://dx.doi.org/10.2172/1193614.

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Suazo, I. L. Engineering study radioactive liquid waste treatment plant refurbishment. Office of Scientific and Technical Information (OSTI), Dezember 1994. http://dx.doi.org/10.2172/10196578.

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Del Signore, John C. Radioactive Liquid Waste Treatment Facility Discharges in 2017. Office of Scientific and Technical Information (OSTI), März 2018. http://dx.doi.org/10.2172/1425784.

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Del Signore, John. Radioactive Liquid Waste Treatment Facility Discharges in 2013. Office of Scientific and Technical Information (OSTI), November 2014. http://dx.doi.org/10.2172/1164454.

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LUECK, K. J. WASTE TREATMENT PLANT (WTP) LIQUID EFFLUENT TREATABILITY EVALUATION. Office of Scientific and Technical Information (OSTI), Oktober 2004. http://dx.doi.org/10.2172/834437.

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