Anaerobic digestion performance of vinegar residue in continuously stirred tank reactor. (June 2015)

• Record Type: Journal Article
• Authors: Li, Lin; Feng, Lu; Zhang, Ruihong; He, Yanfeng; Wang, Wen; Chen, Chang; Liu, Guangqing
• Is Part Of: Bioresource technology. Volume 186(2015)
• Page Start: 338
• Page End: 342
• Publication Date: 2015-06
• Subjects: AD anaerobic digestion -- C/N ratio carbon to nitrogen ratio -- CSTR continuously stirred tank reactor -- HRT hydraulic retention time -- OLR organic loading rate -- TA total alkalinity -- TMY theoretical methane yield -- TS total solids -- TVFA total volatile fatty acids -- VFA volatile fatty acids -- VS volatile solids; Vinegar residue -- Anaerobic digestion -- Continuously stirred tank reactor -- Organic loading rate -- Effluent recirculation; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.03.086
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Anaerobic digestion of vinegar residue was investigated in continuous condition. CSTR showed a stable methane yield of 232.75 mL gvs −1 at OLR of 2.5 gvs L −1 d −1 . Effluent recirculation significantly improved the stability of the AD system. Abstract: Anaerobic digestion (AD) of vinegar residue was investigated in continuously stirred tank reactor (CSTR). The influence of organic loading rate (OLR) and effluent recirculation on AD performance of vinegar residue was tested. Five OLRs, 1.0, 1.5, 2.0, 2.5, and 3.0 gvs L −1 d −1, were used. The highest volumetric methane productivity of 581.88 mL L −1 was achieved at OLR of 2.5 gvs L −1 d −1 . Effluent reflux ratio was set as 50%, the results showed that effluent recirculation could effectively neutralize the acidity of vinegar residue, raise the pH of the feedstock, and enhance the buffering capacity of the AD system. Anaerobic digestion of vinegar residue could be a promising way not only for converting this waste into gas energy but also alleviating environmental pollution which might be useful for future industrial application.