title: A Novel Mesophilic Anaerobic Digestion System for Biogas Production and In Situ Methane Enrichment from Coconut Shell Pyroligneous.
abstract: A novel mesophilic anaerobic digestion process with detoxification-treated coconut shell pyroligneous was established, exhibiting an effective advantage in biogas production. The pyroligneous collected contained 166.2 g l(-1) acetic acid, indicating great potential for biogas production. Detoxification was an effective way of simultaneously enriching biodegradable ingredients and removing inhibitors (mainly as phenols and organic acids) for digestion process. The digestion process lasted 96 h and fermentation characteristics (chemical oxygen demand (COD) removal ratio, volatile fatty acid (VFA) consumptions, pH, total gas, methane yield, and phenol removal efficiency) were measured. The experiments successfully explored the optimum detoxification parameters, oxidized with 10 % H2O2 followed by overliming, and demonstrated 89.3 % COD removal, 91.4 % methane content, 0.305 LCH4/g COD removed CH4 yield, and 88.81 % phenol removal ratio. This study provided clues to overcome the negative effects of inhibitors in pyroligneous on biogas production. The findings could contribute to significant process in detoxified pretreatment of pyroligneous and develop an economically feasible technology for treating pyroligneous after producing charcoal.
authors.affiliation: Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China. jingrongcheng@hotmail.com.|Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China. jingrongcheng@hotmail.com.
authors.forename: Jing-Rong
authors.initials: JR
authors.lastname: Cheng
authors.affiliation: Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China.
authors.forename: Xue-Ming
authors.initials: XM
authors.lastname: Liu
authors.affiliation: Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China.
authors.forename: Zhi-Yi
authors.initials: ZY
authors.lastname: Chen
authors.affiliation: Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China.
authors.forename: You-Sheng
authors.initials: YS
authors.lastname: Zhang
authors.affiliation: Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, People's Republic of China.
authors.forename: Ye-Hui
authors.initials: YH
authors.lastname: Zhang
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D003059:Cocos / Q000737:chemistry* / Q000378:metabolism; D005232:Fatty Acids, Volatile / Q000737:chemistry / Q000378:metabolism; D005285:Fermentation; D006861:Hydrogen Peroxide / Q000737:chemistry; D050216:Metabolic Detoxication, Phase I; D008697:Methane / Q000096:biosynthesis / Q000737:chemistry; D010636:Phenols; D013729:Terpenes / Q000737:chemistry* / Q000378:metabolism
chemical_list: D056804:Biofuels; D005232:Fatty Acids, Volatile; D010636:Phenols; D013729:Terpenes; C000600621:pyroligneous acid; D006861:Hydrogen Peroxide; D008697:Methane
keywords: Anaerobic digestion; Detoxification; Methane; Phenol removal; Pyroligneous