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

Leipeng Cao; Harold Keener; Zhenghua Huang; Yuhuan Liu; Roger Ruan; Fuqing Xu

doi:10.1016/j.biortech.2019.122552

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

Leipeng Cao, Harold Keener, Zhenghua Huang, Yuhuan Liu, Roger Ruan, Fuqing Xu

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26 Scopus citations

Abstract

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 °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.

Original language	English (US)
Article number	122552
Journal	Bioresource Technology
Volume	299
DOIs	https://doi.org/10.1016/j.biortech.2019.122552
State	Published - Mar 2020
Externally published	Yes

Bibliographical note

Funding Information:
The project is supported by Ohio Department of Higher Education Harmful Algal Bloom Research Initiative; the National Natural Science Foundation of China (21466022, 21878139); the Young Talent Supporting Program Starting Fund of Xi'an Jiaotong University; and the National Study Abroad Fund in China.

Funding Information:
The project is supported by Ohio Department of Higher Education Harmful Algal Bloom Research Initiative; the National Natural Science Foundation of China ( 21466022 , 21878139 ); the Young Talent Supporting Program Starting Fund of Xi'an Jiaotong University; and the National Study Abroad Fund in China.

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

Ammonia
Anaerobic digestion
Heavy metals
Nutrient solubility
Phosphorus
Swine manure

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title = "Effects of temperature and inoculation ratio on methane production and nutrient solubility of swine manure anaerobic digestion",

abstract = "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/kgVSfeed was obtained with F/I ratios of 2.0 and 3.0 with mesophilic (37 °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.",

keywords = "Ammonia, Anaerobic digestion, Heavy metals, Nutrient solubility, Phosphorus, Swine manure",

author = "Leipeng Cao and Harold Keener and Zhenghua Huang and Yuhuan Liu and Roger Ruan and Fuqing Xu",

note = "Funding Information: The project is supported by Ohio Department of Higher Education Harmful Algal Bloom Research Initiative; the National Natural Science Foundation of China (21466022, 21878139); the Young Talent Supporting Program Starting Fund of Xi'an Jiaotong University; and the National Study Abroad Fund in China. Funding Information: The project is supported by Ohio Department of Higher Education Harmful Algal Bloom Research Initiative; the National Natural Science Foundation of China ( 21466022 , 21878139 ); the Young Talent Supporting Program Starting Fund of Xi'an Jiaotong University; and the National Study Abroad Fund in China. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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AU - Ruan, Roger

AU - Xu, Fuqing

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PY - 2020/3

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N2 - 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/kgVSfeed was obtained with F/I ratios of 2.0 and 3.0 with mesophilic (37 °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.

AB - 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/kgVSfeed was obtained with F/I ratios of 2.0 and 3.0 with mesophilic (37 °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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KW - Phosphorus

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

Abstract

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