Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts
Wang, Yi1,2; Li, Yuan3; Yang, Shuai2; Wang, Qi-hao1,2; Si, Shao-cheng3; Mei, Han-yi1; Liu, Guo-ming2; Pan, Xiang-liang1; Luo, Yong-ming2,3
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
2022-11-30
Pages10
KeywordCadmium Farmland soil Traditional Chinese herbal medicine residues Washing agents Remediation FTIR
DOI10.1007/s11356-022-24409-3
Corresponding AuthorLuo, Yong-ming(ymluo@issas.ac.cn)
AbstractSoil 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.
Funding OrganizationNational Science Foundation of China
Indexed BySCI
Language英语
WOS KeywordHEAVY-METAL REMOVAL ; HUMIC SUBSTANCES ; CITRIC-ACID ; SEWAGE-SLUDGE ; REMEDIATION ; ZN ; PB ; CU ; FEASIBILITY ; EFFICIENCY
WOS Research AreaEnvironmental Sciences & Ecology
WOS IDWOS:000892949700001
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/31907
Collection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_海岸带环境过程实验室
Corresponding AuthorLuo, Yong-ming
Affiliation1.Zhejiang Univ Technol, Coll Environm, Key Lab Microbial Technol Ind Pollut Control Zheji, Hangzhou 310014, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China
3.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
Recommended Citation
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.
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