干旱区生态环境知识资源中心(Arid): Feasibility of annual wet anaerobic digestion temperature-controlled by solar energy in cold areas

Arid

DOI	10.1016/j.applthermaleng.2022.119333
	Feasibility of annual wet anaerobic digestion temperature-controlled by solar energy in cold areas
	Li, Jinping; Wan, Dandan; Jin, Shirong; Ren, Haiwei; Gong, Shuyuan; Novakovic, Vojislav
通讯作者	Li, JP
来源期刊	APPLIED THERMAL ENGINEERING
ISSN	1359-4311
EISSN	1873-5606
出版年	2023
卷号	219
英文摘要	In cold rural areas of China, variation in ambient temperature leads to higher heat loss of anaerobic digester, low digestion efficiency, and reduction of biogas production. Solar energy is publicly regarded as economical and suitable energy for steady biogas production. However, the high initial investment; and unstable energy supply of the solar-assisted system was the higher challenge of the steady biogas production system. This work aimed to develop a solar water heated anaerobic digestion system with efficient temperature control and present the feasibility of the annual biogas production system temperature-controlled by solar energy in the pilot study. Energy balance was analyzed theoretically between the evacuated tube solar water collector and the anaerobic digester at first. Then a biogas production system was developed in Lanzhou City, China and it mainly consists of a 3 m3 insulated anaerobic digester and solar collector of 30 phi 58 x 1800 mm evacuated tubes. Annual batch pilot experiments have been carried out to test the feasibility of the steady biogas production system temperature-controlled by solar energy in cold and arid areas. The result shows that the temperature-controlled solar energy anaerobic system can start successfully on the 10th, 8th, and 13th during the reaction period and operate smoothly during the whole year in different seasons. The slurry temperature of the three batches was all maintained at 26 +/- 1.1 degrees C, 37 +/- 1.3 degrees C, and 52 +/- 1.1 degrees C, while the temperature difference of solar water was 19.9 degrees C, 15.5 degrees C, and 30.5 degrees C under 3-4 days snowy or cloudy weather. The cumulative methane production at three temperatures was 0.562, 0.632 and 0.846 m3/kg vS The system runs steadily during the whole year by psychrophilic and mesophilic anaerobic (26 degrees C and 37 degrees C) digestion in winter and spring and by thermophilic (52 degrees C) anaerobic digestion in summer and autumn, which implies a high efficient operation strategy for agri-cultural and animal husbandry wastes treatment in cold and arid areas. These theoretical and experimental results provide a scientific basis and engineering reference for the application of biogas production temperature -controlled by solar energy and have important value and significance for the efficient and low-cost anaerobic digestion treatment of agricultural and animal husbandry wastes in cold and arid areas.
英文关键词	Solar heated system Wet anaerobic digestion Start characteristics Feasibility test Annual performance Operation strategy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000882120000004
WOS关键词	METHANE PRODUCTION ; HEATING-SYSTEM ; DESIGN ; BIOREACTOR ; STRAW ; MODEL
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395390
推荐引用方式 GB/T 7714	Li, Jinping,Wan, Dandan,Jin, Shirong,et al. Feasibility of annual wet anaerobic digestion temperature-controlled by solar energy in cold areas[J],2023,219.
APA	Li, Jinping,Wan, Dandan,Jin, Shirong,Ren, Haiwei,Gong, Shuyuan,&Novakovic, Vojislav.(2023).Feasibility of annual wet anaerobic digestion temperature-controlled by solar energy in cold areas.APPLIED THERMAL ENGINEERING,219.
MLA	Li, Jinping,et al."Feasibility of annual wet anaerobic digestion temperature-controlled by solar energy in cold areas".APPLIED THERMAL ENGINEERING 219(2023).