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Enhancement of anaerobic digestion of grass by pretreatment with imidazolium-based ionic liquids
Li, W.1,2; Xu, G.2
2017
Source PublicationENVIRONMENTAL TECHNOLOGY
ISSN0959-3330
Volume38Issue:15Pages:1843-1851
Abstract

In this work, the toxicity of imidazolium-based ionic liquids (ILs) and the enhancement of high-solid anaerobic digestion by pretreatment were studied. Compared with [Bmim] Cl, [Bmim] OAc and [Bmim] BF4, [Bmim] PF6 had the highest toxicity. When the mass ratio of [Bmim] PF6 to grass was higher than 1: 10, biogas was not produced within 30 days. The ability to remove lignin and hemicellulose followed the sequence of [Bmim] OAc, [Bmim] Cl, [Bmim] BF4 and [Bmim] PF6. The crystallinity index of grass pretreated with [Bmim] OAc, [Bmim] Cl, [Bmim] BF4 and [Bmim] PF6 reduced by 73.83%, 54.44%, 17.52% and 7.47%, respectively. The pretreatment with ILs enhanced the methane yield of grass by reducing crystallinity and particle size. The grass pretreated with [Bmim] OAc had the highest methane yield, about 221 mL/g volatile solids, due to its good lignin removal ability and relative low toxicity. After 10 times recycling, the cumulative methane yield of grass pretreated by recycled [Bmim] OAc decreased by 11.95%.

KeywordIonic Liquids Biogas Hydrolysis Anaerobic Digestion Pretreatment
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1080/09593330.2016.1238963
Indexed BySCI
Language英语
WOS KeywordLignocellulosic Biomass ; Enzymatic-hydrolysis ; Saccharification ; Toxicity ; Systems ; Lignin ; Waste ; Straw ; Acid
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationNational Research Foundation Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program
WOS IDWOS:000403391600002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22631
Collection多相复杂系统国家重点实验室
Affiliation1.Natl Univ Singapore, NUS Environm Res Inst, 5A Engn Dr 1, Singapore 117411, Singapore
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Li, W.,Xu, G.. Enhancement of anaerobic digestion of grass by pretreatment with imidazolium-based ionic liquids[J]. ENVIRONMENTAL TECHNOLOGY,2017,38(15):1843-1851.
APA Li, W.,&Xu, G..(2017).Enhancement of anaerobic digestion of grass by pretreatment with imidazolium-based ionic liquids.ENVIRONMENTAL TECHNOLOGY,38(15),1843-1851.
MLA Li, W.,et al."Enhancement of anaerobic digestion of grass by pretreatment with imidazolium-based ionic liquids".ENVIRONMENTAL TECHNOLOGY 38.15(2017):1843-1851.
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