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Anaerobic digestion of submerged macrophytes: Chemical composition and anaerobic digestibility
Ecological Engineering, 2014Abstract Aquatic weeds including submerged macrophyte have been excessively propagated and causing environmental issues in freshwater environment of many countries, and the sustainable treatments have been investigated. In the present study, five submerged macrophyte species dominant in Lake Biwa, Japan, Ceratophyllum demersum, Egeria densa, Elodea ...
Mitsuhiko Koyama +4 more
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Modeling of Anaerobic Digestion of Sludge
Critical Reviews in Environmental Science and Technology, 2009Anaerobic treatments have been successfully employed for more than one hundred years to stabilize sewage sludge. The main aim of sludge anaerobic digestion is the degradation and destruction of organic matter, with consequent sludge stabilization and pathogen reduction.
TOMEI MC +3 more
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Anaerobic digestion of sewage sludge in an anaerobic fixed bed digester
Biomass and Bioenergy, 1995The anaerobic digestion of sewage sludge in conventional reactors requires a hydraulic retention time of around 20 days. By using a fixed bed reactor the hydraulic retention time was reduced to 3–7 days. Recirculation increased the removal of organic matter in this system.
Silvio Montalvo +3 more
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Anaerobic digestion of extruded OFMSW
Bioresource Technology, 2012Organic fraction of municipal solid waste (OFMSW) was used to feed two pilot plants of 1000 l working in anaerobic conditions. The OFMSW had previously been treated using a system of extrusion which, due to exerted pressure, separates the undesired fractions of waste from organic waste and reduces the organic fraction in a kind of homogeneous jam ...
NOVARINO, DANIEL, ZANETTI, Mariachiara
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Anaerobic digestion of a petrochemical effluent using an anaerobic hybrid digester
Biotechnology Letters, 1989An anaerobic hybrid reactor was used in the anaerobic treatment of an acidic petrochemical effluent. An organic loading rate of 20.04 kg COD/(m3d) at a HRT of 17 hours was obtained with a volatile fatty acid removal of 91%, and COD removal of 84%. A final reactor effluent containing 44 mg/l ammonia nitrogen and 12.3 mg/l PO4-P was produced.
T. J. Britz +2 more
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Anaerobic digestion: Technology for biogas production as a source of renewable energy—A review
Energy and the Environment, 2020The authors reviewed the future prospects and previous studies on anaerobic digestion technology for biogas production and highlight the solutions to problems relating to construction and maintenance of biogas digesters, which can now be accessed in a ...
Kechrist Obileke +4 more
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2010
Organic waste may degrade anaerobically in nature as well as in engineered systems. The latter is called anaerobic digestion or biogasification. Anaerobic digestion produces two main outputs: An energy-rich gas called biogas and an effluent. The effluent, which may be a solid as well as liquid with very little dry matter may also be called a digest ...
Angelidaki, Irini, Batstone, Damien John
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Organic waste may degrade anaerobically in nature as well as in engineered systems. The latter is called anaerobic digestion or biogasification. Anaerobic digestion produces two main outputs: An energy-rich gas called biogas and an effluent. The effluent, which may be a solid as well as liquid with very little dry matter may also be called a digest ...
Angelidaki, Irini, Batstone, Damien John
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Kinetics of anaerobic digestion
Energy Conversion and Management, 1988Abstract The basic chemical kinetic equations for anaerobic digestion have been solved to get closed form solutions for the substrate concentration and the concentration of anaerobes. Numerical calculations have been performed to obtain quantitative estimates for their time behaviour.
Satendra Pal Singh, Jugal Kishor
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Perspectives for Anaerobic Digestion
2003The modern society generates large amounts of waste that represent a tremendous threat to the environment and human and animal health. To prevent and control this, a range of different waste treatment and disposal methods are used. The choice of method must always be based on maximum safety, minimum environmental impact and, as far as possible, on ...
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Fuzzy control for an anaerobic digester
Control Engineering Practice, 1997Abstract A fluidized bed reactor was used for the anaerobic digestion of wine distillery wastewater and the capability of fuzzy logic to control this process was demonstrated. The output gas flow rate and the pH in the liquid phase were used as input parameters of the control and the input flow rate was. used as the control variable.
Jean-Philippe Steyer +3 more
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