Efficiency of non-ionic surfactants - EDTA for treating TPH and heavy metals from contaminated soilReport as inadecuate




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Journal of Environmental Health Science and Engineering

, 11:41

First Online: 20 December 2013Received: 18 July 2012Accepted: 29 September 2013

Abstract

Introduction of fuel hydrocarbons and inorganic compounds heavy metals into the soil, resulting in a change of the soil quality, which is likely to affect use of the soil or endangering public health and ground water. This study aimed to determine a series of parameters to remediation of TPH and heavy metals contaminated soil by non-ionic surfactants- chelating agents washing process. In this experimental study, the effects of soil washing time, agitation speed, concentration of surfactant, chelating agent and pH on the removal efficiency were studied. The results showed that TPH removal by nonionic surfactants Tween 80, Brij 35 in optimal condition were 70–80% and 60–65%, respectively. Addition of chelating agent EDTA significantly increases Cd and Pb removal. The washing of soil by non- ionic surfactants and EDTA was effective in remediation of TPH and heavy metals from contaminated soil, thus it can be recommended for remediation of contaminated soil.

KeywordsSoil Non-ionic surfactants Chelating agent Total petroleum hydrocarbons Heavy metals Electronic supplementary materialThe online version of this article doi:10.1186-2052-336X-11-41 contains supplementary material, which is available to authorized users.

An erratum to this article can be found online at 10.1186-2052-336X-12-47.

An erratum to this article is available at http:-dx.doi.org-10.1186-2052-336X-12-47.

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Author: Mansour Baziar - Mohammad Reza Mehrasebi - Ali Assadi - Mehran Mohammadian Fazli - Mohammad Maroosi - Fooad Rahimi

Source: https://link.springer.com/



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