New insights into the sustainable use of co-pyrolyzed dredged sediment for the in situ remediation of Cd polluted sediments in coastal rivers

doi:10.1016/j.jhazmat.2024.133664

	New insights into the sustainable use of co-pyrolyzed dredged sediment for the in situ remediation of Cd polluted sediments in coastal rivers
	Liu, Qunqun 1; Sheng, Yanqing1 ; Wang, Zheng 1,2; Liu, Xiaozhu 1,2
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
	2024-03-15
卷号	466 页码:15
关键词	Sediment remediation Cadmium Dredged sediment Coastal river Biochar
DOI	10.1016/j.jhazmat.2024.133664
通讯作者	Sheng, Yanqing([email protected])
英文摘要	The remediation of Cd-polluted sediment in coastal rivers is essential because of its potential hazards to river and marine ecosystems. Herein, a co-pyrolysis product of contaminated dredged sediment (S@BC) was innovatively applied to cap and immobilize Cd-contaminated sediment in coastal rivers in situ, and their remediation efficiencies, mechanisms, and microbial responses were explored based on a 360 d incubation experiment. The results showed that although S@BC immobilization and capping restrained sediment Cd release to the overlying water, S@BC capping presented a high inhibitory efficiency (66.0% vs. 95.3% at 360 d). Fraction analysis indicated that labile Cd was partially transformed to stable fraction after remediation, with decreases of 0.5%32.7% in the acid-soluble fraction and increases of 5.0%- 182.8% in the residual fraction. S@BC immobilization and capping had minor influences on the sediment bacterial community structure compared to the control. S@BC could directly adsorb sediment mobile Cd (precipitation and complexation) to inhibit Cd release and change sediment properties (e.g., pH and cation exchange capacity) to indirectly reduce Cd release. Particularly, S@BC capping also promoted Cd stabilization by enhancing the sediment sulfate reduction process. Comparatively, S@BC capping was a priority approach for Cd-polluted sediment remediation. This study provides new insights into the remediation of Cd-contaminated sediments in coastal rivers.
资助机构	National Natural Science Foundation of China ; Shandong Provincial Natural Science Foundation ; Special Research Assistant Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
收录类别	SCI
语种	英语
关键词[WOS]	HEAVY-METALS ; MICROBIAL COMMUNITY ; SOIL ; IMMOBILIZATION ; PHOSPHORUS ; EFFICACY ; RELEASE ; LEAD ; LAKE ; PH
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:001178252200001
引用统计	被引频次：1[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.cn/handle/133337/36291
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
通讯作者	Sheng, Yanqing
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qunqun,Sheng, Yanqing,Wang, Zheng,et al. New insights into the sustainable use of co-pyrolyzed dredged sediment for the in situ remediation of Cd polluted sediments in coastal rivers[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,466:15.
APA	Liu, Qunqun,Sheng, Yanqing,Wang, Zheng,&Liu, Xiaozhu.(2024).New insights into the sustainable use of co-pyrolyzed dredged sediment for the in situ remediation of Cd polluted sediments in coastal rivers.JOURNAL OF HAZARDOUS MATERIALS,466,15.
MLA	Liu, Qunqun,et al."New insights into the sustainable use of co-pyrolyzed dredged sediment for the in situ remediation of Cd polluted sediments in coastal rivers".JOURNAL OF HAZARDOUS MATERIALS 466(2024):15.