Use of Energy Crop (Ricinus communis L.) for Phytoextraction of Heavy Metals Assisted with Citric Acid

Hui Zhang; Xueping Chen; Chiquan He; Xia Liang; Kokyo Oh; Xiaoyan Liu; Yanru Lei

doi:10.1080/15226514.2014.935287

Use of Energy Crop (Ricinus communis L.) for Phytoextraction of Heavy Metals Assisted with Citric Acid

Hui Zhang
, Xueping Chen
, Chiquan He^*
, Xia Liang
, Kokyo Oh
, Xiaoyan Liu
, Yanru Lei

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Ricinus communis L. is a bioenergetic crop with high-biomass production and tolerance to cadmium (Cd) and lead (Pb), thus, the plant is a candidate crop for phytoremediation. Pot experiments were performed to study the effects of citric acid in enhancing phytoextraction of Cd/Pb by Ricinus communis L. Citric acid increased Cd and Pb contents in plant shoots in all treatments by about 78% and 18–45%, respectively, at the dosage of 10 mM kg⁻¹ soil without affecting aboveground biomass production. Addition of citric acid reduced CEC, weakened soil adsorption of heavy metals and activated Cd and Pb in soil solutions. The acid-exchangeable fraction (BCR-1) of Pb remained lower than 7% and significantly increased with citric acid amendment. Respective increases in soil evaluation index induces by 14% and 19% under the Cd1Pb50 and Cd1Pb250 treatments upon addition of citric acid resulted in soil quality improvement. Ricinus communis L. has great potential in citric acid-assisted phytoextraction for Cd and Pb remediation.

Original language	English
Pages (from-to)	632-639
Number of pages	8
Journal	International Journal of Phytoremediation
Volume	17
Issue number	7
DOIs	https://doi.org/10.1080/15226514.2014.935287
State	Published - 3 Jul 2015
Externally published	Yes

Keywords

Ricinus communisL
cadmium
citric acid
lead
phytoextraction

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10.1080/15226514.2014.935287

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title = "Use of Energy Crop (Ricinus communis L.) for Phytoextraction of Heavy Metals Assisted with Citric Acid",

abstract = "Ricinus communis L. is a bioenergetic crop with high-biomass production and tolerance to cadmium (Cd) and lead (Pb), thus, the plant is a candidate crop for phytoremediation. Pot experiments were performed to study the effects of citric acid in enhancing phytoextraction of Cd/Pb by Ricinus communis L. Citric acid increased Cd and Pb contents in plant shoots in all treatments by about 78\% and 18–45\%, respectively, at the dosage of 10 mM kg−1 soil without affecting aboveground biomass production. Addition of citric acid reduced CEC, weakened soil adsorption of heavy metals and activated Cd and Pb in soil solutions. The acid-exchangeable fraction (BCR-1) of Pb remained lower than 7\% and significantly increased with citric acid amendment. Respective increases in soil evaluation index induces by 14\% and 19\% under the Cd1Pb50 and Cd1Pb250 treatments upon addition of citric acid resulted in soil quality improvement. Ricinus communis L. has great potential in citric acid-assisted phytoextraction for Cd and Pb remediation.",

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author = "Hui Zhang and Xueping Chen and Chiquan He and Xia Liang and Kokyo Oh and Xiaoyan Liu and Yanru Lei",

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doi = "10.1080/15226514.2014.935287",

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T1 - Use of Energy Crop (Ricinus communis L.) for Phytoextraction of Heavy Metals Assisted with Citric Acid

AU - Zhang, Hui

AU - Chen, Xueping

AU - He, Chiquan

AU - Liang, Xia

AU - Oh, Kokyo

AU - Liu, Xiaoyan

AU - Lei, Yanru

PY - 2015/7/3

Y1 - 2015/7/3

N2 - Ricinus communis L. is a bioenergetic crop with high-biomass production and tolerance to cadmium (Cd) and lead (Pb), thus, the plant is a candidate crop for phytoremediation. Pot experiments were performed to study the effects of citric acid in enhancing phytoextraction of Cd/Pb by Ricinus communis L. Citric acid increased Cd and Pb contents in plant shoots in all treatments by about 78% and 18–45%, respectively, at the dosage of 10 mM kg−1 soil without affecting aboveground biomass production. Addition of citric acid reduced CEC, weakened soil adsorption of heavy metals and activated Cd and Pb in soil solutions. The acid-exchangeable fraction (BCR-1) of Pb remained lower than 7% and significantly increased with citric acid amendment. Respective increases in soil evaluation index induces by 14% and 19% under the Cd1Pb50 and Cd1Pb250 treatments upon addition of citric acid resulted in soil quality improvement. Ricinus communis L. has great potential in citric acid-assisted phytoextraction for Cd and Pb remediation.

AB - Ricinus communis L. is a bioenergetic crop with high-biomass production and tolerance to cadmium (Cd) and lead (Pb), thus, the plant is a candidate crop for phytoremediation. Pot experiments were performed to study the effects of citric acid in enhancing phytoextraction of Cd/Pb by Ricinus communis L. Citric acid increased Cd and Pb contents in plant shoots in all treatments by about 78% and 18–45%, respectively, at the dosage of 10 mM kg−1 soil without affecting aboveground biomass production. Addition of citric acid reduced CEC, weakened soil adsorption of heavy metals and activated Cd and Pb in soil solutions. The acid-exchangeable fraction (BCR-1) of Pb remained lower than 7% and significantly increased with citric acid amendment. Respective increases in soil evaluation index induces by 14% and 19% under the Cd1Pb50 and Cd1Pb250 treatments upon addition of citric acid resulted in soil quality improvement. Ricinus communis L. has great potential in citric acid-assisted phytoextraction for Cd and Pb remediation.

KW - Ricinus communisL

KW - cadmium

KW - citric acid

KW - lead

KW - phytoextraction

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U2 - 10.1080/15226514.2014.935287

DO - 10.1080/15226514.2014.935287

M3 - 文章

C2 - 25976877

AN - SCOPUS:84929455740

SN - 1522-6514

VL - 17

SP - 632

EP - 639

JO - International Journal of Phytoremediation

JF - International Journal of Phytoremediation

IS - 7

ER -

Use of Energy Crop (Ricinus communis L.) for Phytoextraction of Heavy Metals Assisted with Citric Acid

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