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Field experiment on the effects of sepiolite and biochar on the remediation of Cd- and Pb-polluted farmlands around a Pb-Zn mine in Yunnan Province, China.
Environ Sci Pollut Res Int. 2019 Mar; 26(8):7743-7751.ES

Abstract

The effects of sepiolite and biochar on the contents of available nutrients (N, P, and K); the chemical forms and available contents of Cd and Pb in soils; the biomass and growth of maize; and the contents of nutrients, Cd, and Pb in maize were studied in situ in Cd- and Pb-polluted farmlands around the Lanping Pb-Zn mine in Yunnan Province, China. Results demonstrated that sepiolite did not influence the contents of available nutrients in soils, although it significantly increased the pH value and decreased available Cd (CaCl2-extractable and exchangeable) contents and exchangeable and reducible Pb. Moreover, sepiolite increased the biomass in the aboveground part of maize, resulting in the reduction of Cd contents in maize plants and grains by 25.6-47.5%. Meanwhile, the biochar increased the contents of available nutrients in soils and decreased the contents of exchangeable Pb in soils and biomass in the aboveground part of maize plants and grains; decreased the Cd contents in maize stems and grains by 26.7% and 24.6%, respectively; and decreased the Pb content in roots by 16.2%. However, neither sepiolite nor biochar had considerable influence on the Pb content in maize grains. According to a correlation analysis, soil pH has extremely significant negative correlations with available Cd content in soils, which in turn have extremely significant positive correlation with the Cd content in maize plants and grains. These results revealed that sepiolite increases soil pH and decreases Cd bioavailability in farmland soils around the Pb-Zn mine. Furthermore, biochar increases the contents of available nutrients in farmland soils and the maize yield. Sepiolite and biochar both decrease the contents and transfer coefficients of Cd in maize plants and grains and are, thus, applicable to the immobilization remediation of Cd-polluted farmlands.

Authors+Show Affiliations

College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. mingjiang2010@163.com. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. mingjiang2010@163.com.College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. liyuan@ynau.edu.cn. Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. liyuan@ynau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30671759

Citation

Zhan, Fangdong, et al. "Field Experiment On the Effects of Sepiolite and Biochar On the Remediation of Cd- and Pb-polluted Farmlands Around a Pb-Zn Mine in Yunnan Province, China." Environmental Science and Pollution Research International, vol. 26, no. 8, 2019, pp. 7743-7751.
Zhan F, Zeng W, Yuan X, et al. Field experiment on the effects of sepiolite and biochar on the remediation of Cd- and Pb-polluted farmlands around a Pb-Zn mine in Yunnan Province, China. Environ Sci Pollut Res Int. 2019;26(8):7743-7751.
Zhan, F., Zeng, W., Yuan, X., Li, B., Li, T., Zu, Y., Jiang, M., & Li, Y. (2019). Field experiment on the effects of sepiolite and biochar on the remediation of Cd- and Pb-polluted farmlands around a Pb-Zn mine in Yunnan Province, China. Environmental Science and Pollution Research International, 26(8), 7743-7751. https://doi.org/10.1007/s11356-018-04079-w
Zhan F, et al. Field Experiment On the Effects of Sepiolite and Biochar On the Remediation of Cd- and Pb-polluted Farmlands Around a Pb-Zn Mine in Yunnan Province, China. Environ Sci Pollut Res Int. 2019;26(8):7743-7751. PubMed PMID: 30671759.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Field experiment on the effects of sepiolite and biochar on the remediation of Cd- and Pb-polluted farmlands around a Pb-Zn mine in Yunnan Province, China. AU - Zhan,Fangdong, AU - Zeng,Wenzeng, AU - Yuan,Xingchao, AU - Li,Bo, AU - Li,Tianguo, AU - Zu,Yanqun, AU - Jiang,Ming, AU - Li,Yuan, Y1 - 2019/01/23/ PY - 2018/06/26/received PY - 2018/12/27/accepted PY - 2019/1/24/pubmed PY - 2019/5/7/medline PY - 2019/1/24/entrez KW - Cadmium pollution KW - Chemical forms KW - Immobilization remediation KW - Lead pollution KW - Passivation material KW - Soil properties SP - 7743 EP - 7751 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 26 IS - 8 N2 - The effects of sepiolite and biochar on the contents of available nutrients (N, P, and K); the chemical forms and available contents of Cd and Pb in soils; the biomass and growth of maize; and the contents of nutrients, Cd, and Pb in maize were studied in situ in Cd- and Pb-polluted farmlands around the Lanping Pb-Zn mine in Yunnan Province, China. Results demonstrated that sepiolite did not influence the contents of available nutrients in soils, although it significantly increased the pH value and decreased available Cd (CaCl2-extractable and exchangeable) contents and exchangeable and reducible Pb. Moreover, sepiolite increased the biomass in the aboveground part of maize, resulting in the reduction of Cd contents in maize plants and grains by 25.6-47.5%. Meanwhile, the biochar increased the contents of available nutrients in soils and decreased the contents of exchangeable Pb in soils and biomass in the aboveground part of maize plants and grains; decreased the Cd contents in maize stems and grains by 26.7% and 24.6%, respectively; and decreased the Pb content in roots by 16.2%. However, neither sepiolite nor biochar had considerable influence on the Pb content in maize grains. According to a correlation analysis, soil pH has extremely significant negative correlations with available Cd content in soils, which in turn have extremely significant positive correlation with the Cd content in maize plants and grains. These results revealed that sepiolite increases soil pH and decreases Cd bioavailability in farmland soils around the Pb-Zn mine. Furthermore, biochar increases the contents of available nutrients in farmland soils and the maize yield. Sepiolite and biochar both decrease the contents and transfer coefficients of Cd in maize plants and grains and are, thus, applicable to the immobilization remediation of Cd-polluted farmlands. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30671759/Field_experiment_on_the_effects_of_sepiolite_and_biochar_on_the_remediation_of_Cd__and_Pb_polluted_farmlands_around_a_Pb_Zn_mine_in_Yunnan_Province_China_ DB - PRIME DP - Unbound Medicine ER -