Proceedings of the 2016 International Conference on Civil, Transportation and Environment

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The Leaching Characteristics of Chelant-Enhanced Phytoextraction of Cd and Pb Contaminated Soil with Simulated Acid Rain

Authors
Yayin Lu, Dinggui Luo, Guowei Liu, An Lai, Jian Gong
Corresponding Author
Yayin Lu
Available Online January 2016.
DOI
10.2991/iccte-16.2016.170How to use a DOI?
Keywords
Phytoextraction; EDTA-enhanced; Cd- Pb compound contaminated soil; Leakage; Zea mays L.
Abstract

A soil column-cultivation leaching experiment was conducted in greenhouse to expose the HMs leaching characteristics in the process of EDTA-enhanced Phytoremediation of Cd- Pb compound contaminated soil by Zea mays L.(in seedling stage) under the condition of acid rain. Results showed that: (1) In the chelant-enhanced phytoremediation system , both EDTA and acid rain can accelerate HMs phytoextraction and promote Cd and Pb leakage, but EDTA was more effective than simulated acid rain. (2) In the process of rain leaching, the Cd and Pb concentration in the leachate decreased linearly along with the rainfall increased. The leaching rate of Cd and Pb with EDTA was 5.40- and 87.82-fold of control (without the application of a chelator).In the acid rain- Zea mays L.-chelant (EDTA)-enhanced phytoremediation system of Cd-Pb contaminated soil, EDTA and acid rain all have the characteristics of promoting Cd and Pb activation, but the leakage of HMs (especially Pb) depends mainly on the activation rate of EDTA to HMs, and might be closely related to the dosage and usage of chelating agent.

Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2016 International Conference on Civil, Transportation and Environment
Series
Advances in Engineering Research
Publication Date
January 2016
ISBN
10.2991/iccte-16.2016.170
ISSN
2352-5401
DOI
10.2991/iccte-16.2016.170How to use a DOI?
Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Yayin Lu
AU  - Dinggui Luo
AU  - Guowei Liu
AU  - An Lai
AU  - Jian Gong
PY  - 2016/01
DA  - 2016/01
TI  - The Leaching Characteristics of Chelant-Enhanced Phytoextraction of Cd and Pb Contaminated Soil with Simulated Acid Rain
BT  - Proceedings of the 2016 International Conference on Civil, Transportation and Environment
PB  - Atlantis Press
SP  - 980
EP  - 985
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccte-16.2016.170
DO  - 10.2991/iccte-16.2016.170
ID  - Lu2016/01
ER  -