Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts

doi:10.1007/s11356-022-24409-3

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts
	Wang, Yi 2,3; Li, Yuan 1; Yang, Shuai 2; Wang, Qi-hao 2,3; Si, Shao-cheng 1; Mei, Han-yi 3; Liu, Guo-ming 2; Pan, Xiang-liang 3; Luo, Yong-ming 1,2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2022-11-30
页码	10
关键词	Cadmium Farmland soil Traditional Chinese herbal medicine residues Washing agents Remediation FTIR
ISSN号	0944-1344
DOI	10.1007/s11356-022-24409-3
通讯作者	Luo, Yong-ming(ymluo@issas.ac.cn)
英文摘要	Soil washing is one of the effective methods for permanent removal of heavy metals from farmland soil, and selection of washing agents determines heavy metal removal efficiency. However, there is still a lack of cost-efficient and eco-friendly washing agents. In this study, three residues of traditional Chinese herbal medicine (RTCHM) extracts: residues of Prunus mume (Sieb.) Sieb. et Zucc. (RPM), residues of Schisandra chinensis (Turcz.) Baill. (RSC), and residues of Crataegus pinnatifida Bunge (RCP), were tested for their potential of Cd removal. The variations in amounts and compositions of dissolved organic carbon (DOC) and citric acid were responsible for the difference in Cd removal efficiencies of RTCHM extracts. Fourier-transform infrared spectrophotometer (FTIR) analysis showed that hydroxyl, carboxyl, and amine were the main functional groups of RTCHM extracts to chelate with heavy metals. The optimum conditions for RTCHM extracts were 100 g L-1 concentration, solid-liquid ratio 1:10, pH 2.50, and contact time of 1 h, and the highest Cd removal efficiencies of RPM, RSC, and RCP extracts reached 35%, 11%, and 15%, respectively. The ecological risk of Cd decreased significantly due to the decrease of exchangeable and reducible Cd fractions. RTCHM extracts washing alleviated soil alkalinity and had little effect on soil cation exchange capacity. Meanwhile, the concentrations of soil organic matter and nitrogen were enhanced significantly by RPM extracts and the activities of soil catalase and urease were also improved. Overall, among the tested extracts, RPM extracts was a much more feasible and environment-friendly washing agent for the remediation of Cd-contaminated farmland soil.
WOS关键词	HEAVY-METAL REMOVAL ; HUMIC SUBSTANCES ; CITRIC-ACID ; SEWAGE-SLUDGE ; REMEDIATION ; ZN ; PB ; CU ; FEASIBILITY ; EFFICIENCY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000892949700001
资助机构	National Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/31906]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者	Luo, Yong-ming
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China 3.Zhejiang Univ Technol, Coll Environm, Key Lab Microbial Technol Ind Pollut Control Zheji, Hangzhou 310014, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yi,Li, Yuan,Yang, Shuai,et al. Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2022:10.
APA	Wang, Yi.,Li, Yuan.,Yang, Shuai.,Wang, Qi-hao.,Si, Shao-cheng.,...&Luo, Yong-ming.(2022).Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,10.
MLA	Wang, Yi,et al."Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022):10.