Effects of temperature and inoculation ratio on methane production and nutrient solubility of swine manure anaerobic digestion

被引：27
作者：
Cao, Leipeng [1 ,2 ,3 ]
Keener, Harold [2 ]
Huang, Zhenghua [3 ]
Liu, Yuhuan [3 ]
Ruan, Roger [3 ]
Xu, Fuqing [1 ,2 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian, Shaanxi, Peoples R China
[2] Ohio State Univ, Dept Food Agr & Biol Engn, Wooster, OH 44691 USA
[3] Nanchang Univ, Minist Educ, Engn Res Ctr Biomass Convers, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 299卷
基金：
中国国家自然科学基金;
关键词：
Swine manure; Anaerobic digestion; Nutrient solubility; Phosphorus; Ammonia; Heavy metals; WASTE ACTIVATED-SLUDGE; BIOGAS PRODUCTION; HEAVY-METALS; CO-DIGESTION; FOOD WASTE; MICROBIAL COMMUNITY; AMMONIA INHIBITION; ANIMAL MANURE; DAIRY MANURE; PHOSPHORUS;
D O I：
10.1016/j.biortech.2019.122552
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This study investigated the effects of temperature and volatile solids (VS) ratio of feedstock to inoculum (F/I ratio) on methane (CH4) production and the solubility of nitrogen (N), phosphorus (P), cooper (Cu), and Zinc (Zn) after anaerobic digestion (AD) of swine manure. The highest cumulative CH4 yield of 470 L/kgVS(feed) was obtained with F/I ratios of 2.0 and 3.0 with mesophilic (37 degrees C) temperature, and methane production rate decreased with the increase of F/I ratio. As F/I ratio increased from 0.5 to 4.0, the lag phase for methane production increased from 1.02 days to 13.52 days, indicating an initial inhibition at high F/I ratios. AD increased the concentrations of ammonia, Cu and Zn in the AD effluent supernatant, while decreased total and water extractive P concentrations. The changes of ammonia, Cu, Zn, and P concentrations were more significant with the increase of F/I ratio.
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页数：7
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