DOI: 10.1016/j.jcou.2018.08.023
Scopus记录号: 2-s2.0-85052688227
论文题名: CO2 conversion to CH4 using Zero Valent Iron (ZVI) and anaerobic granular sludge: Optimum batch conditions and microbial pathways
作者: Vyrides I. ; Andronikou M. ; Kyprianou A. ; Modic A. ; Filippeti A. ; Yiakoumis C. ; Samanides C.G.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 415
结束页码: 422
语种: 英语
英文关键词: Anaerobic granular sludge
; CO2 utilization
; Homoacetogenesis
; Hydrogenotrophic methanogens
; Methane
; Zero valent iron
Scopus关键词: Anaerobic digestion
; Antibiotics
; Bacteria
; Carbon dioxide
; Granular materials
; Iron
; Methane
; Methanogens
; Anaerobic granular sludge
; Bacteria inhibition
; Homoacetogenesis
; Hydrogenotrophic methanogens
; No productions
; Trichloromethane
; Zero-valent iron
; Zerovalent irons
; Chlorine compounds
英文摘要: This study investigates a new approach for carbon dioxide (CO2) conversion to methane (CH4) by using Zero Valent Iron (ZVI) and anaerobic granular sludge under aquatic mild conditions. Numerous studies have used ZVI to stimulate the anaerobic digestion of waste and wastewater. Up to date however, little research has been done on the use of ZVI and anaerobic granular sludge for the conversion of CO2 as a sole carbon substrate to CH4. The results showed that 75 g L-1 ZVI, 2 gVS L-1 anaerobic granular sludge at initial pH of 6 under daily pH regulation contributed to substantial CH4 production. It was pointed out that the initial ZVI (50 g L-1), with anaerobic granular sludge, was sufficient for the production of the same amount of CH4 over 2 CO2 re-feedings for a total of 67 days. To identify the microbial pathways for CO2 conversion to CH4, the following inhibitors were independently added: antibiotics for bacteria inhibition, 2-Bromoethanesulphonate (BES) for methanogens inhibition and Trichloromethane (CHCl3) for inhibition of bacteria and methanogens. Results showed that when antibiotics were added, they did not have any negative effect on CO2 conversion to CH4. This demonstrates that CO2 is converted to CH4 mainly through hydrogenotrophic methanogens and the contribution of homoacetogens was minor. Under these conditions of anaerobic granular sludge and ZVI the addition of BES and CHCl3 resulted in a high generation of H2, no production of CH4 and generation of 1110 mg L-1 and 730 mg L-1 in 8 days respectively. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111803
Appears in Collections: 气候减缓与适应
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作者单位: Department of Environmental Science and Technology, Cyprus University of Technology, P.O. BOX 50329, 95 Eirinis Str., Limassol, 3603, Cyprus
Recommended Citation:
Vyrides I.,Andronikou M.,Kyprianou A.,et al. CO2 conversion to CH4 using Zero Valent Iron (ZVI) and anaerobic granular sludge: Optimum batch conditions and microbial pathways[J]. Journal of CO2 Utilization,2018-01-01,27