A stability assessment tool for anaerobic codigestion.

Anaerobic codigestion allows for greater resource recovery from organic substrates and provides opportunities for more stable operation than mono-digestion. Despite these benefits, the adoption of codigestion is limited because it can introduce operational complexity and suffers from some of the same challenges as mono-digestion, such as ammonia inhibition and nutrient imbalances. There is a need for rapid and cost-effective assessments that can provide insight to design engineers as they explore the valorization of local organic waste streams and seek to maintain or improve digester stability. To address this need, we developed and tested a tool that can yield useful stability indicators, performance predictions, and substrate selection protocols for codigestion. This tool uses quantitative, empirical data on stability indicators within an assessment framework to evaluate a digester's process stability. The tool's accuracy was tested using real and simulated digester data, and the importance of the nitrogen and lipid composition of a substrate was identified. The resulting stability assessment tool improves our fundamental understanding of codigestion, provides a mechanism to reduce the number of experiments, and guides selection of appropriate substrate combinations that can maximize energy recovery during codigestion without compromising process stability.

[1]  T. Kvítek,et al.  Regulation and optimization of grassland water regimes. , 1990 .

[2]  Elena Comino,et al.  Investigation of increasing organic loading rate in the co-digestion of energy crops and cow manure mix. , 2010, Bioresource technology.

[3]  Largus T Angenent,et al.  Methanogenic population dynamics during startup of a full-scale anaerobic sequencing batch reactor treating swine waste. , 2002, Water research.

[4]  J M Lema,et al.  A methodology for optimising feed composition for anaerobic co-digestion of agro-industrial wastes. , 2010, Bioresource technology.

[5]  C. Forster,et al.  Continuous co-digestion of cattle slurry with fruit and vegetable wastes and chicken manure , 2002 .

[6]  J. P. Frost,et al.  Methane production from anaerobic co-digestion of the separated solid fraction of pig manure with dried grass silage. , 2012, Bioresource technology.

[7]  J. Mata-Álvarez,et al.  Co-digestion of pig manure and glycerine: experimental and modelling study. , 2011, Journal of environmental management.

[8]  Glen T. Daigger,et al.  Biological wastewater treatment. , 2011 .

[9]  Bernhard Wett,et al.  Population dynamics at digester overload conditions. , 2009, Bioresource technology.

[10]  D. T. Hill,et al.  Using volatile fatty acid relationships to predict anaerobic digester failure. , 1987 .

[11]  Valentina C Abbai.  Anaerobic co-digestion of sewage sludge with OFMSW , 2012 .

[12]  E Salminen,et al.  Anaerobic batch degradation of solid poultry slaughterhouse waste. , 2000, Water science and technology : a journal of the International Association on Water Pollution Research.

[13]  J. Matsumoto,et al.  Inhibition of anaerobic digestion by mercury , 1986 .

[14]  J. Kusowski.  Anaerobic Co-Digestion Planning and Research for Green Bay, WI , 2013 .

[15]  Caixia Wan,et al.  Semi-continuous anaerobic co-digestion of thickened waste activated sludge and fat, oil and grease. , 2011, Waste management.

[16]  Xinhui Han,et al.  Optimizing feeding composition and carbon-nitrogen ratios for improved methane yield during anaerobic co-digestion of dairy, chicken manure and wheat straw. , 2012, Bioresource technology.

[17]  K. S. Creamer,et al.  Inhibition of anaerobic digestion process: a review. , 2008, Bioresource technology.

[18]  B. Ahring,et al.  Regulation and optimization of the biogas process: Propionate as a key parameter , 2007 .

[19]  Joel J. Ducoste,et al.  Anaerobic co-digestion of fat, oil, and grease (FOG): a review of gas production and process limitations. , 2012 .

[20]  Ulf Jeppsson,et al.  GISCOD: general integrated solid waste co-digestion model. , 2009, Water research.

[21]  Ulf Jeppsson,et al.  Modelling anaerobic co-digestion in Benchmark Simulation Model No. 2: Parameter estimation, substrate characterisation and plant-wide integration. , 2016, Water research.

[22]  J. Steyer,et al.  State indicators for monitoring the anaerobic digestion process. , 2010, Water research.

[23]  F Cecchi,et al.  Application of the IWA ADM1 model to simulate anaerobic co-digestion of organic waste with waste activated sludge in mesophilic condition. , 2009, Bioresource technology.

[24]  W. Parawira,et al.  An evaluation of a mesophilic reactor for treating wastewater from a Zimbabwean potato-processing plant , 2009 .

[25]  C Gruvberger,et al.  Co-digestion of grease trap sludge and sewage sludge. , 2008, Waste management.

[26]  Ulf Jeppsson,et al.  Aspects on ADM 1 Implementation within the BSM 2 Framework 1 Aspects on ADM 1 Implementation within the BSM 2 Framework , 2008 .

[27]  A Bonmatí,et al.  Biomass adaptation over anaerobic co-digestion of sewage sludge and trapped grease waste. , 2011, Bioresource technology.

[28]  Xavier Font,et al.  Long term operation of a thermophilic anaerobic reactor: process stability and efficiency at decreasing sludge retention time. , 2010, Bioresource technology.

[29]  Ulas Tezel,et al.  Methane recovery from the anaerobic codigestion of municipal sludge and FOG. , 2009, Bioresource technology.

[30]  G. Zeeman,et al.  The role of sludge retention time in the hydrolysis and acidification of lipids, carbohydrates and proteins during digestion of primary sludge in CSTR systems , 2000 .

[31]  Lianzhu Du,et al.  Anaerobic Co-digestion of Pig Manure with Dried Maize Straw , 2016 .

[32]  H. W. Kim,et al.  Anaerobic co-digestion of sewage sludge and food waste using temperature-phased anaerobic digestion process. , 2004, Water science and technology : a journal of the International Association on Water Pollution Research.

[33]  Largus T Angenent,et al.  Biochemical methane potential and biodegradability of complex organic substrates. , 2011, Bioresource technology.

[34]  K. McMahon,et al.  Anaerobic codigestion of municipal solid waste and biosolids under various mixing conditions--I. Digester performance. , 2001, Water research.

[35]  H. D. Stensel,et al.  Wastewater Engineering: Treatment and Reuse , 2002 .

[36]  P. Parameswaran,et al.  Feasibility of anaerobic co-digestion of pig waste and paper sludge. , 2012, Bioresource technology.

[37]  V. Moset,et al.  The use of agricultural substrates to improve methane yield in anaerobic co-digestion with pig slurry: effect of substrate type and inclusion level. , 2014, Waste management.

[38]  Irini Angelidaki,et al.  Anaerobic digestion model No. 1 (ADM1) , 2002 .

[39]  Robert F. Hickey,et al.  Monitoring of the anaerobic methane fermentation process , 1990 .

[40]  Ulf Jeppsson,et al.  Aspects on ADM1 Implementation within the BSM2 Framework , 2005 .

[41]  J Mata-Alvarez,et al.  Anaerobic co-digestion of pig manure and crude glycerol at mesophilic conditions: biogas and digestate. , 2012, Bioresource technology.

[42]  D Bolzonella,et al.  Anaerobic co-digestion of sludge with other organic wastes in small wastewater treatment plants: an economic considerations evaluation. , 2007, Water science and technology : a journal of the International Association on Water Pollution Research.

[43]  Hong-Wei Yen,et al.  Anaerobic co-digestion of algal sludge and waste paper to produce methane. , 2007, Bioresource technology.

[44]  Methane production. , 1995, Environmental science & technology.

[45]  J. Steyer,et al.  A waste characterisation procedure for ADM1 implementation based on degradation kinetics. , 2012, Water research.

[46]  R Braun,et al.  Optimised anaerobic treatment of house-sorted biodegradable waste and slaughterhouse waste in a high loaded half technical scale digester. , 2006, Water science and technology : a journal of the International Association on Water Pollution Research.

[47]  M M Alves,et al.  Fate of LCFA in the co-digestion of cow manure, food waste and discontinuous addition of oil. , 2009, Water research.

[48]  B Mattiasson,et al.  Impact of food industrial waste on anaerobic co-digestion of sewage sludge and pig manure. , 2004, Journal of environmental management.