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, Yanqing 1; Wang, Zheng 1,2; Liu, Xiaozhu 1,2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2024-03-15
卷号	466 页码:15
关键词	Sediment remediation Cadmium Dredged sediment Coastal river Biochar
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2024.133664
通讯作者	Sheng, Yanqing(yqsheng@yic.ac.cn)
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.
WOS关键词	HEAVY-METALS ; MICROBIAL COMMUNITY ; SOIL ; IMMOBILIZATION ; PHOSPHORUS ; EFFICACY ; RELEASE ; LEAD ; LAKE ; PH
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:001178252200001
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
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/34911]
专题	中国科学院烟台海岸带研究所
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.