title: Volatile fatty acids produced by co-fermentation of waste activated sludge and henna plant biomass.
abstract: Anaerobic co-fermentation of waste activated sludge (WAS) and henna plant biomass (HPB) for the enhanced production of volatile fatty acids (VFAs) was investigated. The results indicated that VFAs was the main constituents of the released organics; the accumulation of VFAs was much higher than that of soluble carbohydrates and proteins. HPB was an advantageous substrate compared to WAS for VFAs production; and the maximum VFAs concentration in an HPB mono-fermentation system was about 2.6-fold that in a WAS mono-fermentation system. In co-fermentation systems, VFAs accumulation was positively related to the proportion of HPB in the mixed substrate, and the accumulated VFAs concentrations doubled when HPB was increased from 25% to 75%. HPB not only adjust the C/N ratio; the associated and/or released lawsone might also have a positive electron-shuttling effect on VFAs production.
authors.affiliation: Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China. Electronic address: hjg@hdu.edu.cn.
authors.forename: Jingang
authors.initials: J
authors.lastname: Huang
authors.affiliation: Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
authors.forename: Rongbing
authors.initials: R
authors.lastname: Zhou
authors.affiliation: Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Chen
authors.affiliation: Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Han
authors.affiliation: Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, 16521 Prague 6, Czech Republic.
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wen
authors.affiliation: Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
authors.forename: Junhong
authors.initials: J
authors.lastname: Tang
mesh_terms: D000693:Anaerobiosis; D019149:Bioreactors; D002241:Carbohydrates / Q000737:chemistry; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D005285:Fermentation / Q000502:physiology*; D006863:Hydrogen-Ion Concentration; D031564:Lawsonia Plant / Q000737:chemistry / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism; D012722:Sewage / Q000737:chemistry
chemical_list: D002241:Carbohydrates; D005232:Fatty Acids, Volatile; D011506:Proteins; D012722:Sewage
keywords: Co-fermentation; Henna plant biomass; Lawsone; Volatile fatty acids; Waste activated sludge