Anaerobic biodegradability of Category 2 animal by-products: Methane potential and inoculum source

详细信息    查看全文

• 作者：Tatiana A. Pozdniakova^a ; José ; C. Costa^b ; Ricardo J. Santos^a ; M.M. Alves^b ; Rui A.R. Boaventura^a ; ^{bventura@fe.up.pt}
• 关键词：Animal by-products ; Anaerobic digestion ; Solids concentration ; Gompertz model ; Inoculum source
• 刊名：Bioresource Technology
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：124
• 期：Complete
• 页码：276-282
• 全文大小：857 K

文摘

Category 2 animal by-products that need to be sterilized with steam pressure according Regulation (EC) 1774/2002 are studied. In this work, 2 sets of experiments were performed in mesophilic conditions: (i) biomethane potential determination testing 0.5 % , 2.0 % and 5.0 % total solids (TS), using sludge from the anaerobic digester of a wastewater treatment plant as inoculum; (ii) biodegradability tests at a constant TS concentration of 2.0 % and different inoculum sources (digested sludge from a wastewater treatment plant; granular sludge from an upflow anaerobic sludge blanket reactor; leachate from a municipal solid waste landfill; and sludge from the slaughterhouse wastewater treatment anaerobic lagoon) to select the more adapted inoculum to the substrate in study. The higher specific methane production was of 317 mL CH₄ g^?1 VS_substrate for 2.0 % TS. The digested sludge from the wastewater treatment plant led to the lowest lag-phase period and higher methane potential rate.