A Combined Process for Efficient Biomethane Production from Corn Straw and Cattle Manure: Optimizing C/N Ratio of Mixed Hydrolysates

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	A Combined Process for Efficient Biomethane Production from Corn Straw and Cattle Manure: Optimizing C/N Ratio of Mixed Hydrolysates
	Yuan, Ye ; Bian, Aiqin ; Zhang, Lulu ; Chen, Tianming ; Pan, Mei ; He, Lei ; Wang, Aijie ; Ding, Cheng
刊名	BIORESOURCES
	2019-02-01
卷号	14 期号:1 页码:1347-1363
关键词	Thermal-alkali pretreatment Enzymatic hydrolysis Mixed hydrolysates C/N ratio optimization Anaerobic digestion
ISSN号	1930-2126
英文摘要	A novel combined process, consisting of thermal-alkali pretreatment, enzymatic hydrolysis, and anaerobic digestion (AD) was utilized to methanize corn straw (CS) and cattle manure (CM) efficiently. This study aimed to identify the carbon/nitrogen (C/N) ratio of the mixed hydrolysates of CS and CM that maximized methane production in an AD reactor. Additionally, pretreatment conditions for CS and CM were evaluated. The optimum condition of pH 10 was 80 degrees C and 3 h of thermal-alkali pretreatment to produce 42% of hydrolysis efficiency, while a further enzymatic process increased the efficiency to 72%. The C/N ratio was optimized during the co-digestion of the mixed hydrolysates, and better performances were obtained with a C/N ratio of 11 to 30 having specific methane production from 180 to 280 mL/g CODadded. The maximum methane production reached to 280 mL/g CODadded at the C/N ratio of 20. Approximately 75% of the total organic matter from the liquid fractions of mixed hydrolysates was converted to methane. Trace elements in CM hydrolysates may also promote the methane yield. This community structure change was proposed to be an internal response for different C/N ratio adaptation. An inappropriate C/N ratio may cause accumulation of free ammonia or volatile fatty acids, which would inhibit methanogens, but not affect the acidogens.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43321]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
作者单位	1.Yancheng Inst Technol, Sch Environm Sci & Engn, Yancheng 224003, Peoples R China 2.Jiangsu Univ, Sch Environm Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China 3.Yancheng Inst Technol, Key Lab Adv Technol Environm Protect Jiangsu Prov, Yancheng 224051, Peoples R China 4.Jiangsu Keyida Environm Sci & Technol Co LTD, Yancheng 224007, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Ye,Bian, Aiqin,Zhang, Lulu,et al. A Combined Process for Efficient Biomethane Production from Corn Straw and Cattle Manure: Optimizing C/N Ratio of Mixed Hydrolysates[J]. BIORESOURCES,2019,14(1):1347-1363.
APA	Yuan, Ye.,Bian, Aiqin.,Zhang, Lulu.,Chen, Tianming.,Pan, Mei.,...&Ding, Cheng.(2019).A Combined Process for Efficient Biomethane Production from Corn Straw and Cattle Manure: Optimizing C/N Ratio of Mixed Hydrolysates.BIORESOURCES,14(1),1347-1363.
MLA	Yuan, Ye,et al."A Combined Process for Efficient Biomethane Production from Corn Straw and Cattle Manure: Optimizing C/N Ratio of Mixed Hydrolysates".BIORESOURCES 14.1(2019):1347-1363.