Thermophilic Solid-State Anaerobic Digestion of Corn Straw, Cattle Manure, and Vegetable Waste: Effect of Temperature, Total Solid Content, and CN Ratio
Joint Authors
Sun, Xu
Su, Lianghu
Liu, Chenwei
Ji, Rongting
Zhen, Guangyin
Chen, Mei
Zhang, Longjiang
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-11
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Thermophilic solid-state anaerobic digestion (SS-AD) of agricultural wastes, i.e., corn straw, cattle manure, and vegetable waste, was carried out in this study.
The effects of temperature (40-60°C), initial solid content (ISC, 17.5-32.5%), and C/N ratio (15-32 : 1) on biogas production were evaluated using a Box-Behnken experimental design (BBD) combined with response surface methodology (RSM).
The results showed that optimization of process parameters is important to promote the SS-AD performance.
All the factors, including interactive terms (except the ISC), were significant in the quadratic model for biogas production with SS-AD.
Among the three operation parameters, the C/N ratio had the largest effect on biogas production, followed by temperature, and a maximum biogas yield of 241.4 mL gVS-1 could be achieved at 47.3°C, ISC=24.81%, and C/N=22.35.
After 20 d of SS-AD, the microbial community structure under different conditions was characterized by high-throughput sequencing, showing that Firmicutes, Bacteroidetes, Chloroflexi, Synergistetes, and Proteobacteria dominated the bacterial community, and that Firmicutes had a competitive advantage over Bacteroidetes at elevated temperatures.
The biogas production values and relative abundance of OPB54 and Bacteroidia after 20 d of SS-AD can be fitted well using a quadratic model, implying that OPB54 and Bacteroidia play important roles in the methanogenic metabolism for agricultural waste thermophilic SS-AD.
American Psychological Association (APA)
Su, Lianghu& Sun, Xu& Liu, Chenwei& Ji, Rongting& Zhen, Guangyin& Chen, Mei…[et al.]. 2020. Thermophilic Solid-State Anaerobic Digestion of Corn Straw, Cattle Manure, and Vegetable Waste: Effect of Temperature, Total Solid Content, and CN Ratio. Archaea،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1130468
Modern Language Association (MLA)
Su, Lianghu…[et al.]. Thermophilic Solid-State Anaerobic Digestion of Corn Straw, Cattle Manure, and Vegetable Waste: Effect of Temperature, Total Solid Content, and CN Ratio. Archaea No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1130468
American Medical Association (AMA)
Su, Lianghu& Sun, Xu& Liu, Chenwei& Ji, Rongting& Zhen, Guangyin& Chen, Mei…[et al.]. Thermophilic Solid-State Anaerobic Digestion of Corn Straw, Cattle Manure, and Vegetable Waste: Effect of Temperature, Total Solid Content, and CN Ratio. Archaea. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1130468
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1130468