Treatment of landfill leachate nanofiltration concentrate by a three-dimensional electrochemical technology with waste aluminum scraps as particle electrodes: Efficacy, mechanisms, and enhancement effect of subsequent electrocoagulation

doi:10.1016/j.wasman.2023.11.016

	Treatment of landfill leachate nanofiltration concentrate by a three-dimensional electrochemical technology with waste aluminum scraps as particle electrodes: Efficacy, mechanisms, and enhancement effect of subsequent electrocoagulation
	Li, Jie 1; Wang, Lei 2; Lu, Jianbo 2; Peng, Wuliang 1; Chen, Jing 3; Jiang, Guangming 4; Liu, Dongfang 5
刊名	WASTE MANAGEMENT
	2024
卷号	173 页码:118-130
关键词	Landfill leachate nanofiltration concentrate Particle electrodes Aluminum scraps Electrochemical oxidation Electrocoagulation
ISSN号	0956-053X
DOI	10.1016/j.wasman.2023.11.016
通讯作者	Lu, Jianbo(jianbo98@126.com)
英文摘要	Landfill leachate nanofiltration concentrate is a kind of wastewater containing high concentrations of color and refractory organics. Herein, we proposed a novel three-dimensional electrochemical technology (3DET) with waste aluminum scraps as particle electrodes for its treatment. The planar and particle electrodes were first optimized. Ti/RuO2 and graphite were used as anodes in the two-dimensional electrochemical technology (2DET). In the light of contaminant removal (color, UV254, COD, and TOC), chlorine reduction, and energy consumption, graphite was selected as planar anodes and cathodes. Moreover, 3DET with Al particle electrodes (Al 3DET) outperformed that with conventional granular activated carbon electrodes, 2DET, and Al particles. At 120 min, the removal efficiencies of color, UV254, COD, and TOC using Al 3DET were 98.94 %, 84.72 %, 51.93 %, and 67.46 %, respectively. UV-vis and EEM spectroscopy, and GC-MS analyses indicate that macromolecular organic matter such as humic-like substances could be effectively degraded and simultaneously removed. Reactive species identification tests including free radical quenching and EPR spectra were conducted. The results indicate that in addition to anodic direct oxidation, indirect oxidation by oxidative species (H2O2, (OH)-O-center dot, and RCS) and flocculation by Al species also played a vital role in contaminant removal. Continuous-flow experiments show that Fe EC as a post -treatment step of Al 3DET could effectively provide a neutralization effect for the 3DET effluent and enhance the removal efficiency of contaminants. The total operating cost of combined process was 1.307 USD/m(3). This study shows that the Al 3DET-Fe EC process is a promising technology for the treatment of nanofiltration concentrate.
WOS关键词	INCINERATION LEACHATE ; REFRACTORY ORGANICS ; REMOVAL ; DEGRADATION ; PERFORMANCE ; OXIDATION ; ACID ; SYSTEM ; WATER ; SLAG
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:001166266700001
资助机构	Shandong Provincial Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/34893]
专题	中国科学院烟台海岸带研究所
通讯作者	Lu, Jianbo
作者单位	1.Yantai Univ, Sch Econ & Management, Yantai 264005, Shandong, Peoples R China 2.Yantai Univ, Sch Civil Engn, Yantai 264005, Shandong, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China 4.Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, Australia 5.Nankai Univ, Sch Environm Sci & Engn, Tianjin 300350, Peoples R China
推荐引用方式 GB/T 7714	Li, Jie,Wang, Lei,Lu, Jianbo,et al. Treatment of landfill leachate nanofiltration concentrate by a three-dimensional electrochemical technology with waste aluminum scraps as particle electrodes: Efficacy, mechanisms, and enhancement effect of subsequent electrocoagulation[J]. WASTE MANAGEMENT,2024,173:118-130.
APA	Li, Jie.,Wang, Lei.,Lu, Jianbo.,Peng, Wuliang.,Chen, Jing.,...&Liu, Dongfang.(2024).Treatment of landfill leachate nanofiltration concentrate by a three-dimensional electrochemical technology with waste aluminum scraps as particle electrodes: Efficacy, mechanisms, and enhancement effect of subsequent electrocoagulation.WASTE MANAGEMENT,173,118-130.
MLA	Li, Jie,et al."Treatment of landfill leachate nanofiltration concentrate by a three-dimensional electrochemical technology with waste aluminum scraps as particle electrodes: Efficacy, mechanisms, and enhancement effect of subsequent electrocoagulation".WASTE MANAGEMENT 173(2024):118-130.