globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2019.02.050
Scopus记录号: 2-s2.0-85062413846
论文题名:
Hazardous waste dewatering and dry mass reduction through hydrophobic modification by a facile one-pot, alkali-assisted hydrothermal reaction
作者: Li X.; Wang J.; You J.; Yu P.; Li X.; Xue G.; Chen H.; Xu X.; van Agtmaal S.; Alvarez P.J.J.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 155
起始页码: 225
结束页码: 232
语种: 英语
英文关键词: Dewatering ; Hazardous waste ; Hydrophobic ; Hydrothermal treatment ; Paint sludge
英文摘要: Hazardous waste dewatering is important for volume reduction and further treatment. Hazardous organic wastes with low ratio of free to bound water, and low flash point are difficult to dewater and pose an explosion risk for conventional thermal drying. Here, we develop a facile one-pot, alkali-assisted hydrothermal treatment (AHT) method for cost-efficient hazardous waste dewatering, dry mass minimization and volume reduction. Wet paint sludge (WPS), a hazardous organic waste, was reduced (79% by total weight and 52% by dry mass) by dewatering through AHT hydrophobic modification, and the product was nonflammable. Conversion of bound water to free water enhanced WPS dissolution for further decomposition. Alkali was critical for boosting ether demethylation in the solid phase, and cleavage of ethers forming alcohols that facilitated transfer of solid mass into the liquid phase. Polar functional groups were eliminated through AHT, which increased the relative abundance of hydrophobic functional groups on the surface of solid residues and promoted dewatering. We also demonstrate that AHT can be widely adapted and scaled up to treat various hazardous organic waste streams, which is of significant industrial and environmental interest. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121904
Appears in Collections:气候变化事实与影响

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作者单位: State Environmental Protection Engineering Centre for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China; Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, United States; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; BCF Systems for Separation Processes Ltd, Olmendreef 2a, Steenbergen, RP 4651, Netherlands

Recommended Citation:
Li X.,Wang J.,You J.,et al. Hazardous waste dewatering and dry mass reduction through hydrophobic modification by a facile one-pot, alkali-assisted hydrothermal reaction[J]. Water Research,2019-01-01,155
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