Effects of sepiolite on stabilization remediation of heavy metal-contaminated soil and its ecological evaluation

doi:10.1007/s11783-014-0689-2

Frontiers of Environmental Science & Engineering

2016, Vol. 10

Issue (1): 85-92 https://doi.org/10.1007/s11783-014-0689-2

本期目录

Effects of sepiolite on stabilization remediation of heavy metal-contaminated soil and its ecological evaluation

Yuebing SUN¹,Dan ZHAO²,Yingming XU^1,^*(

),Lin WANG¹,Xuefeng LIANG¹,Yue SHEN¹

1. Key Laboratory of Original Environmental Quality, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Institute of Agro-Environmental Protection, Ministry of Agriculture, Tianjin 300191, China
2. College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450002, China

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Abstract：

Stabilization in the remediation of heavy metal contaminated soils has been gaining prominence because of its cost-effectiveness and rapid implementation. In this study, microbial properties such as microbial community and enzyme activities, chemical properties such as soil pH and metal fraction, and heavy metal accumulation in spinach (Spinacia oleracea) were considered in assessing stabilization remediation effectiveness using sepiolite. Results showed that soil pH values increased with rising sepiolite concentration. Sequential extraction results indicated that the addition of sepiolite converted significant amounts of exchangeable fraction of Cd and Pb into residual form. Treatments of sepiolite were observed to reduce Cd and Pb translocation from the soil to the roots and shoots of spinach. Concentrations of Cd and Pb exhibited 12.6%–51.0% and 11.5%–46.0% reduction for the roots, respectively, and 0.9%–46.2% and 43.0%–65.8% reduction for the shoots, respectively, compared with the control group. Increase in fungi and actinomycete counts, as well as in catalase activities, indicated that soil metabolic recovery occurred after sepiolite treatments.

Key words： stabilization remediation heavy metals sepiolite soil quality spinach (Spinacia oleracea)

收稿日期: 2012-10-11 出版日期: 2015-12-03

Corresponding Author(s): Yingming XU

引用本文:

. [J]. Frontiers of Environmental Science & Engineering, 2016, 10(1): 85-92.
Yuebing SUN,Dan ZHAO,Yingming XU,Lin WANG,Xuefeng LIANG,Yue SHEN. Effects of sepiolite on stabilization remediation of heavy metal-contaminated soil and its ecological evaluation. Front. Environ. Sci. Eng., 2016, 10(1): 85-92.

链接本文:

https://academic.hep.com.cn/fese/CN/10.1007/s11783-014-0689-2
https://academic.hep.com.cn/fese/CN/Y2016/V10/I1/85

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