Anaerobic Co-Digestion of Sludge and Organic Food Waste—Performance, Inhibition, and Impact on the Microbial Community
Tóm tắt
Anaerobic co-digestion allows for under-utilised digesters to increase biomethane production. The organic fraction of municipal solid waste (OFMSW), i.e., food waste, is an abundant substrate with high degradability and gas potential. This paper investigates the co-digestion of mixed sludge from wastewater treatment plants and OFMSW, through batch and continuous lab-scale experiments, modelling, and microbial population analysis. The results show a rapid adaptation of the process, and an increase of the biomethane production by 20% to 40%, when co-digesting mixed sludge with OFMSW at a ratio of 1:1, based on the volatile solids (VS) content. The introduction of OFMSW also has an impact on the microbial community. With 50% co-substrate and constant loading conditions (1 kg VS/m3/d) the methanogenic activity increases and adapts towards acetate degradation, while the community in the reference reactor, without a co-substrate, remains unaffected. An elevated load (2 kg VS/m3/d) increases the methanogenic activity in both reactors, but the composition of the methanogenic population remains constant for the reference reactor. The modelling shows that ammonium inhibition increases at elevated organic loads, and that intermittent feeding causes fluctuations in the digester performance, due to varying inhibition. The paper demonstrates how modelling can be used for designing feed strategies and experimental set-ups for anaerobic co-digestion.
Từ khóa
Tài liệu tham khảo
Batstone, 2014, The role of anaerobic digestion in the emerging energy economy, Curr. Opion. Biotechnol., 27, 142, 10.1016/j.copbio.2014.01.013
Krupp, 2005, Feasibility study for Co-Digestion of Sewage Sludge with OFMSW on Two Wastewater Treatment Plants in Germany, Waste Manag., 25, 393, 10.1016/j.wasman.2005.02.009
Lundkvist, M. (2005). Energieffektivisering–Rapport till möte med Energimyndigheten, Sweco Viak AB. (In Swedish).
Dosta, 2011, Codigestion of solid wastes: A review of its uses and perspectives including modeling, Crit. Rev. Biotechnol., 31, 99, 10.3109/07388551.2010.525496
Dosta, 2014, A critical review on anaerobic co-digestion achievements between 2010 and 2013, Renew. Sustain. Energy Rev., 36, 412, 10.1016/j.rser.2014.04.039
Ren, 2018, Comprehensive review on food waste anaerobic digestion: Research updates and tendencies, Bioresour. Technol., 247, 1069, 10.1016/j.biortech.2017.09.109
Sosnowski, 2003, Anaerobic co-digestion of sewage sludge and organic fraction of municipal solid wastes, Adv. Environ. Res., 7, 609, 10.1016/S1093-0191(02)00049-7
Bolzonella, 2006, Anaerobic codigestion of waste activated sludge and ofmsw: The experiences of viareggio and treviso plants (Italy), Water Sci. Technol., 53, 203, 10.2166/wst.2006.251
Cuetos, 2006, Anaerobic co-digestion of primary sludge and the fruit and vegetable fraction of the municipal solid wastes, Renew. Energy, 31, 2017, 10.1016/j.renene.2005.09.029
Zhang, 2007, Characterization of food waste as feedstock for anaerobic digestion, Bioresour. Technol., 98, 929, 10.1016/j.biortech.2006.02.039
Iacovidou, 2012, Food waste co-digestion with sewage sludge–Realising its potential in the UK, J. Environ. Manag., 112, 267, 10.1016/j.jenvman.2012.07.029
Fonoll, 2015, Anaerobic co-digestion of sewage sludge and fruit wastes: Evaluation of the transitory states when the co-substrate is changed, Chem. Eng. J., 262, 1268, 10.1016/j.cej.2014.10.045
Breunig, 2017, Bioenergy potential from food waste in California, Environ. Sci. Technol., 51, 1120, 10.1021/acs.est.6b04591
Yenigun, 2013, Ammonia inhibition in anaerobic digestion: A review, Process. Biochem., 48, 901, 10.1016/j.procbio.2013.04.012
Arnell, M. (2016). Performance Assessment of Wastewater Treatment Plants-Multi-Objective Analysis Using Plant-Wide Models. [Ph.D. Thesis, Lund University].
Li, 2018, Anaerobic digestion of food waste: A review focusing on process stability, Bioresour. Technol., 248, 20, 10.1016/j.biortech.2017.07.012
Gou, 2014, Effects of temperature and organic loading rate on the performance and microbial community of anaerobic co-digestion of waste activated sludge and food waste, Chemosphere, 105, 146, 10.1016/j.chemosphere.2014.01.018
Derbal, 2009, Application of the IWA ADM1 model to simulate anaerobic co-digestion of organic waste with waste activated sludge in mesophilic condition, Bioresour. Technol., 100, 1539, 10.1016/j.biortech.2008.07.064
Zaher, 2009, GISCOD: General integrated solid waste co-digestion model, Water Res., 43, 2717, 10.1016/j.watres.2009.03.018
Batstone, D.J., Keller, J., Angelidaki, R.I., Kalyuzhnyi, S.V., Pavlostathis, S.G., Rozzi, A., Sanders, W.T.M., Siegrist, H., and Vavilin, V.A. (2002). Anaerobic Digestion Model No. 1 (ADM1), IWA Publishing.
Rosen, C., and Jeppsson, U. (2018, August 13). Aspects on ADM1 Implementation within the BSM2 Framework. Department of Industrial Electrical Engineering and Automation. Available online: http://portal.research.lu.se/ws/files/5715450/588082.pdf.
Gernaey, K.V., Jeppsson, U., Vanrolleghem, P.A., and Copp, J.B. (2014). Benchmarking of Control Strategies for Wastewater Treatment Plants, IWA Publishing.
Wang, 2017, Microbial characteristics in anaerobic digestion process of food waste for methane production–A review, Bioresour. Technol., 248, 29, 10.1016/j.biortech.2017.06.152
Liu, 2008, Metabolic, phylogenetic, and ecological diversity of the methanogenic archaea, Ann. N. Y. Acad. Sci., 1125, 171, 10.1196/annals.1419.019
Angelidaki, 2009, Defining the biomethane potential (bmp) of solid organic wastes and energy crops: a proposed protocol for batch assays, Water Sci. Technol., 59, 927, 10.2166/wst.2009.040
Holliger, 2016, Towards a standardization of biomethane potential tests, Water Sci. Technol., 74, 2515, 10.2166/wst.2016.336
Carlsson, M., and Schnürer, A. (2018, August 13). Handbook Methane Potential. Available online: http://sgc.camero.se/ckfinder/userfiles/files/SGC237.pdf.
Pourbafrani, 2011, Methane production from citrus wastes: process development and cost estimation, J. Chem. Technol. Biotechnol., 87, 250
Snaidr, 1997, Phylogenetic analysis and in situ identification of bacteria in activated sludge, Appl. Environ. Microbiol., 63, 2884, 10.1128/aem.63.7.2884-2896.1997
Raskin, 1994, Group-specific 16s rRNA hybridization probes to describe natural communities of methanogens, Appl. Environ. Microbiol., 60, 1232, 10.1128/aem.60.4.1232-1240.1994
Amann, 1995, Phylogenetic identification and in-situ detection of individual microbial-cells without cultivation, Microbiol. Rev., 59, 143, 10.1128/mr.59.1.143-169.1995
Daims, 1999, The Domain-Specific Probe EUB338 is Insufficient for the Detection of all Bacteria: Development and Evaluation of a More Comprehensive Probe Set, Syst. Appl. Microbiol., 22, 434, 10.1016/S0723-2020(99)80053-8
Arnell, 2016, Modelling anaerobic co-digestion in benchmark simulation model No. 2: Parameter estimation, substrate characterisation and plant-wide integration, Water Res., 98, 138, 10.1016/j.watres.2016.03.070
Neves, 2009, Co-digestion of cow manure, food waste and intermittent input of fat, Bioresour. Technol., 100, 1957, 10.1016/j.biortech.2008.10.030
Li, 2009, Biogas production from anaerobic co-digestion of food waste with dairy manure in a two-phase digestion system, Appl. Biochem. Biotechnol., 160, 643, 10.1007/s12010-009-8533-z
Gruvberger, 2004, Digestion of sludge and organic waste in the sustainability concept for Malmo, Sweden, Water Sci. Technol., 49, 163, 10.2166/wst.2004.0634