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Comparison of Alkali-Buffering Effects and Co-digestion on High-Solid Anaerobic Digestion of Horticultural Waste
Li, Wangliang1; Lu, Changbo2; An, Gaojun2; Chang, Shengqiang3
2017-10-01
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume31Issue:10Pages:10990-10997
Abstract

High-solid anaerobic digestion (HSAD) of horticultural waste by adding alkali (ADAA) was optimized in a batch system, and its performance was compared to co-digestion in a semi-continuous system. In the batch system, the process of ADAA was optimized by testing the time point of adding alkali and the type of alkali, both of which had significant influence on HSAD performance. The cumulative biogas yield of poplar leaf was the highest, 156.7 mL/g of volatile solids (VS), when adding CaO on the third day. In comparison to NaOH and Na2CO3, the biogas yield of the ADAA process adjusted with CaO was the highest. When the organic loading rate was 4.0 and 8.0 g of VS L-1 day(-1), the co-digestion system would produce 10.30 and 15.28% more methane than ADAA (CaO as alkali), respectively, which was due to the higher nutrients, broader diversity, and better growth of the microorganism in co-digestion of poplar leaf and chicken manure. Microbial community analysis of the seed sludge, co-digestion, and ADAA showed Methanosarcina, Methanosaeta, Methanobacterium, Methermicoccus, and Anaerosphaera were found to be the dominant methane -producing bacteria. The study confirms the advantages of co-digestion over ADAA for methane production from horticultural wastes.

SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.energyfuels.7b02269
Indexed BySCI
Language英语
WOS KeywordFood Waste ; Microbial Community ; Methane Production ; Single-stage ; Lignocellulosic Biomass ; Biogas Production ; Sewage-sludge ; Swine Manure ; Wheat-straw ; Pilot-scale
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000413710300070
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23387
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, 1 Zhongguancun, Beijing 100190, Peoples R China
2.Beijing POL Res Inst, 1 Sanjiadian East St, Beijing 102300, Peoples R China
3.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Li, Wangliang,Lu, Changbo,An, Gaojun,et al. Comparison of Alkali-Buffering Effects and Co-digestion on High-Solid Anaerobic Digestion of Horticultural Waste[J]. ENERGY & FUELS,2017,31(10):10990-10997.
APA Li, Wangliang,Lu, Changbo,An, Gaojun,&Chang, Shengqiang.(2017).Comparison of Alkali-Buffering Effects and Co-digestion on High-Solid Anaerobic Digestion of Horticultural Waste.ENERGY & FUELS,31(10),10990-10997.
MLA Li, Wangliang,et al."Comparison of Alkali-Buffering Effects and Co-digestion on High-Solid Anaerobic Digestion of Horticultural Waste".ENERGY & FUELS 31.10(2017):10990-10997.
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