Anaerobic digestion performance of vinegar residue in continuously stirred tank reactor

Lin Li; Lu Feng; Ruihong Zhang; Yanfeng He; Wen Wang; Chang Chen; Guangqing Liu

doi:10.1016/j.biortech.2015.03.086

Anaerobic digestion performance of vinegar residue in continuously stirred tank reactor

Bioresour Technol. 2015 Jun:186:338-342. doi: 10.1016/j.biortech.2015.03.086. Epub 2015 Mar 21.

Authors

Lin Li¹, Lu Feng², Ruihong Zhang³, Yanfeng He¹, Wen Wang¹, Chang Chen⁴, Guangqing Liu⁵

Affiliations

¹ Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
² Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China; CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
³ Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China; Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, United States.
⁴ College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: chenchang@mail.buct.edu.cn.
⁵ Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: gqliu@mail.buct.edu.cn.

PMID: 25838040
DOI: 10.1016/j.biortech.2015.03.086

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 g(vs) L(-1) d(-1), were used. The highest volumetric methane productivity of 581.88 mL L(-1) was achieved at OLR of 2.5 g(vs) 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.

Keywords: Anaerobic digestion; Continuously stirred tank reactor; Effluent recirculation; Organic loading rate; Vinegar residue.

Publication types

Evaluation Study
Research Support, Non-U.S. Gov't

MeSH terms

Acetic Acid / metabolism*
Analysis of Variance
Bacteria, Anaerobic / metabolism*
Biofuels*
Bioreactors*
Biotechnology / methods*
Hydrogen-Ion Concentration
Methane / biosynthesis*

Substances

Biofuels
Methane
Acetic Acid