International Journal of Phytoremediation, Volume (20), No (7), Year (2017-1) , Pages (643-649)

Title : ( The effect of olive husk extract compared to the edta on Pb availability and some chemical and biological properties in a Pb-contaminated soil )

Authors: , Amir Lakzian , Akram Halajnia , H. Hammami ,

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Abstract

It was found that using chelating agents increases the efficiency of heavy metal extraction however they may have negative effects on soil ecosystem quality. A pot experiment was conducted in a completely randomized design with three replications in order to evaluate the effect of EDTA and Olive Husk Extract (OHE) on some chemical and biological properties of the Pb-contaminated soil. The experimental treatments included EDTA (2 g Na2EDTA salt per kg soil), OHE (2 g TDS of OHE per kg soil) and control (without the chelating agent). The results revealed that the EDTA and OHE treatments increased the Pb availability by 17.7% and 5.5% in comparison to the control treatment, respectively. Although EDTA was more effective in increasing the Pb availability but decreased the soil biological quality index (SBQI). The EDTA treatment significantly decreased the dehydrogenase (DH) activity and germination index (GI). The OHE application significantly increased the available-P, available-K, total N and organic carbon content by 339.92%, 40.79%, 20.9% and 29.7% compared with control treatment, respectively. Furthermore, OHE considerably increased SBQI from 18.96 to 53.48. Compared to the control treatment higher values of soil respiration activity, DH activity, and carbon availability index (CAI) were observed in OHE treatment.

Keywords

, Chelating agent, Dehydrogenase activity, Olive Husk Extract, Pb availability, Soil respiration
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@article{paperid:1065136,
author = {, and Lakzian, Amir and Halajnia, Akram and H. Hammami},
title = {The effect of olive husk extract compared to the edta on Pb availability and some chemical and biological properties in a Pb-contaminated soil},
journal = {International Journal of Phytoremediation},
year = {2017},
volume = {20},
number = {7},
month = {January},
issn = {1522-6514},
pages = {643--649},
numpages = {6},
keywords = {Chelating agent; Dehydrogenase activity; Olive Husk Extract; Pb availability; Soil respiration},
}

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%0 Journal Article
%T The effect of olive husk extract compared to the edta on Pb availability and some chemical and biological properties in a Pb-contaminated soil
%A ,
%A Lakzian, Amir
%A Halajnia, Akram
%A H. Hammami
%J International Journal of Phytoremediation
%@ 1522-6514
%D 2017

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