Treatment of PAH‐contaminated soil by combination of Fenton's reaction and biodegradation

Palmroth, Marja R.T.; Langwaldt, Jörg; Aunola, Tuomo A.; Goi, Anna; Puhakka, Jaakko A.; Tuhkanen, Tuula

doi:10.1002/jctb.1476

Cited by 39 publications

(25 citation statements)

References 40 publications

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“…Chemical oxidation and aerobic bioremediation can be combined relatively easily. Bioventing and aerobic flushing to encourage bioremediation of petroleumderived hydrocarbons are practices common to the current subsurface remediation market and which in research have been mimicked in the lab by maintaining oxygen saturation in column or microcosm experiments Jung et al 2005;Kulik et al 2006;Palmroth et al 2006b). Often increased biological degradation has been attributed to aerobic conditions created by chemical oxidation (Kulik et al 2006;Palmroth et al 2006a).…”

Section: Optimizing Microbial Regeneration Following Iscomentioning

confidence: 99%

Efforts to improve coupled in situ chemical oxidation with bioremediation: a review of optimization strategies

et al. 2010

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Purpose In order to provide highly effective yet relatively inexpensive strategies for the remediation of recalcitrant organic contaminants, research has focused on in situ treatment technologies. Recent investigation has shown that coupling two common treatments-in situ chemical oxidation (ISCO) and in situ bioremediation-is not only feasible but in many cases provides more efficient and extensive cleanup of contaminated subsurfaces. However, the combination of aggressive chemical oxidants with delicate microbial activity requires a thorough understanding of the impact of each step on soil geochemistry, biota, and contaminant dynamics. In an attempt to optimize coupled chemical and biological remediation, investigations have focused on elucidating parameters that are necessary to successful treatment. In the case of ISCO, the impacts of chemical oxidant type and quantity on bacterial populations and contaminant biodegradability have been considered. Similarly, biostimulation, that is, the adjustment of redox conditions and amendment with electron donors, acceptors, and nutrients, and bioaugmentation have been used to expedite the regeneration of biodegradation following oxidation. The purpose of this review is to integrate recent results on coupled ISCO and bioremediation with the goal of identifying parameters necessary to an optimized biphasic treatment and areas that require additional focus. Conclusions and recommendations Although a biphasic treatment consisting of ISCO and bioremediation is a feasible in situ remediation technology, a thorough understanding of the impact of chemical oxidation on subsequent microbial activity is required. Such an understanding is essential as coupled chemical and biological remediation technologies are further optimized.

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Section: Optimizing Microbial Regeneration Following Iscomentioning

confidence: 99%

Efforts to improve coupled in situ chemical oxidation with bioremediation: a review of optimization strategies

et al. 2010

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“…It has been successfully applied in the remediation engineering of PAH-contaminated sites (Quan et al, 2003;Martinez et al, 2003). Moreover, several studies have reported that Fenton oxidation can enhance the biodegradability of PAHs (Nam et al, 2001;Lee and Hosomi, 2001;Kulik et al, 2005;Palmroth et al, 2006). Several studies have reported that the treatment efficiency of HOCs by ISCO is affected by soil type (Gates-Anderson et al, 2001;Goi and Trapido, 2004).…”

Section: Introductionmentioning

confidence: 97%

Influence of pyrene combination state in soils on its treatment efficiency by Fenton oxidation

Sun

Yan

2008

Journal of Environmental Management

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“…However, in many situations of aged soil remediation, a very high PAH removal rate is not directly attained with oxidation and a post-treatment by bioremediation is performed to achieve clean-up objectives [8,[36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Oxidant selection to treat an aged PAH contaminated soil by in situ chemical oxidation

Lemaire

Buès

Kabeche

et al. 2013

Journal of Environmental Chemical Engineering

104

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This work is a part of the OXYSOL project aiming at the conception of a global treatment pathway including In Situ Chemical Oxidation to clean up soils of former metallurgical sites.It deals with the selection of the most adapted oxidants. Batch experiments were performed with aged contaminated soil samples of a former steel-making plant to degrade the 16 US 1 EPA PAHs. In this research, hydrogen peroxide, modified Fenton's reaction, potassium permanganate, sodium percarbonate and sodium persulfate were compared at high and moderate doses. Hydrogen peroxide, modified Fenton's reagent, percarbonate and activated persulfate led to a maximum degradation ratio of 45%. A higher ratio (70%) was obtained with a high dose of permanganate. Except for permanganate, increasing oxidant dose did not improve degradation rates, especially with radical-based oxidative systems probably due to radical scavenging. Oxidant doses had an effect on pH that drastically increased or dropped in some cases, which was a drawback. Permanganate efficacy was mainly assigned to its persistence. In all cases, the low availability of PAHs, partly sequestrated in the aged soil, was identified as the most limiting factor for degradation performance. Oxidants were ranked according to their efficiency for PAH oxidation in soils. Efficiency was not correlated to the doses.

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Treatment of PAH‐contaminated soil by combination of Fenton's reaction and biodegradation

Cited by 39 publications

References 40 publications

Efforts to improve coupled in situ chemical oxidation with bioremediation: a review of optimization strategies

Efforts to improve coupled in situ chemical oxidation with bioremediation: a review of optimization strategies

Influence of pyrene combination state in soils on its treatment efficiency by Fenton oxidation

Oxidant selection to treat an aged PAH contaminated soil by in situ chemical oxidation

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