Han, Lu1; Nie, Xiang1; Wei, Jing2
; Gu, Mingyue3; Wu, Wenpei1,4; Chen, Mengfang1,4发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
2021-01-10
卷号751页码:9
关键词BiocharDissolved black carbonBiopolymer compositionsLignocellulose
DOI10.1016/j.scitotenv.2020.141491
通讯作者Chen, Mengfang(mfchen@issas.ac.cn)
英文摘要Dissolved black carbon (DBC) is becoming increasingly concerned by researchers due to its unique environmental behavior. However, understanding of the influencemechanism of biopolymer compositions of cellulose (CEL), hemicellulose (HEM) and lignin (LIG) on the formation and physiochemical characteristics of DBC from lignocellulose-based biochar is limited. This study therefore examined the formation of DBCs derived from the biopolymer compositions, corn straw (CS), corncob (CC), bamboo sawdust (BS) and pinewood sawdust (PS) under the heat treatment temperatures ( HTTs) of 300-500 degrees C. Zeta potential and hydrodynamic diameters (Dh) of DBCs produced under 300 degrees C were further investigated. DBC formation may be closely associated with the HTT-dependent heterogeneities of biopolymer compositions, in which significant effects of CEL and HEM charring on physiochemical properties of DBCs were identified under the HTT of 300 and 400 degrees C, while the formation of DBCs was closely related to LIG and its proportions in biomass under high HTT (>500 degrees C). On the rise of the HTT, the carbonaceous structures of biopolymer compositionswere reorganized and converted to graphitic structures in biochar accompanied by the large decomposition or carbonization of CEL and HEM, leading to the reduced carbon content, surface functional groups, aromaticity and molecular weight of DBCs, as well as the decrease of protein-like and relative increase of fulvic-like fluorescent substances in most DBCs. LIG in biomass may facilitate the migration of DBCs due to abundant surface negative charges and the formation of low Dh. This study offered newinsights into our understanding of influencingmechanisms of biopolymer compositions on the characteristic of DBCs under different HTTs. (C) 2020 Elsevier B.V. All rights reserved.
资助机构National Key Research and Development Program of the Ministry of Sciences and Technology of China; National Natural Science Foundation of China
收录类别SCI
语种英语
关键词[WOS]ORGANIC-MATTER; FLUORESCENCE SPECTROSCOPY; HEAVY-METAL; PYROLYSIS; BEHAVIOR; SOIL; NANOPARTICLES; BIOMASS; LIGNIN; PLANT
研究领域[WOS]Environmental Sciences & Ecology
WOS记录号WOS:000587300800015
引用统计被引频次：7[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/28270
专题中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者Chen, Mengfang作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Nanjing Kaiye Environm Technol Co Ltd, 8 Yuanhua Rd,Innovat Bldg 106,Nanjing Univ Sci Pk, Nanjing 210034, Peoples R China
4.Chinese Acad Sci, Inst Soil Sci, Jiangsu Engn Lab Soil & Groundwater Remediat Cont, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714Han, Lu,Nie, Xiang,Wei, Jing,et al. Effects of feedstock biopolymer compositions on the physiochemical characteristics of dissolved black carbon from lignocellulose-based biochar[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,751:9.
APAHan, Lu,Nie, Xiang,Wei, Jing,Gu, Mingyue,Wu, Wenpei,&Chen, Mengfang.(2021).Effects of feedstock biopolymer compositions on the physiochemical characteristics of dissolved black carbon from lignocellulose-based biochar.SCIENCE OF THE TOTAL ENVIRONMENT,751,9.
MLAHan, Lu,et al."Effects of feedstock biopolymer compositions on the physiochemical characteristics of dissolved black carbon from lignocellulose-based biochar".SCIENCE OF THE TOTAL ENVIRONMENT 751(2021):9.
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