Coupling in situ chemical oxidation with bioremediation of chloroethenes: a review

Honetschlägerová, Lenka; Martinec, Marek; Škarohlíd, Radek

doi:10.1007/s11157-019-09512-1

Cited by 17 publications

(11 citation statements)

References 114 publications

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“…[93] The results showed high performance of Mega-ligand as Cd and Pb were removed from contaminated water quickly, Cd was removed in less than 2 h, and Pb in less than 15 min. The performance of Mega-legend in terms of Cd and Pb was not affected by pH (3)(4)(5)(6)(7)(8)(9)(10). In addition, the full regeneration process could be achieved by washed Mega-legend easily by 1% HCl.…”

Section: Mwcntsmentioning

confidence: 94%

“…In contrast, in situ remediation is when the contaminated soil or groundwater is remediated directly in the subsurface. The in situ remediation process is often preferred because it is cheaper than the ex situ remediation process [2,6]. For example, according to Chany et al [7], the remediation cost of removal and replacement of contaminated soil is very expensive (on the order of $3 million/ha), which is considered a big challenge for developing countries in terms of environmental sustainability practice [7].…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances of Nanoremediation Technologies for Soil and Groundwater Remediation: A Review

Alazaiza

Albahnasawi

Ali

et al. 2021

Water

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Nanotechnology has been widely used in many fields including in soil and groundwater remediation. Nanoremediation has emerged as an effective, rapid, and efficient technology for soil and groundwater contaminated with petroleum pollutants and heavy metals. This review provides an overview of the application of nanomaterials for environmental cleanup, such as soil and groundwater remediation. Four types of nanomaterials, namely nanoscale zero-valent iron (nZVI), carbon nanotubes (CNTs), and metallic and magnetic nanoparticles (MNPs), are presented and discussed. In addition, the potential environmental risks of the nanomaterial application in soil remediation are highlighted. Moreover, this review provides insight into the combination of nanoremediation with other remediation technologies. The study demonstrates that nZVI had been widely studied for high-efficiency environmental remediation due to its high reactivity and excellent contaminant immobilization capability. CNTs have received more attention for remediation of organic and inorganic contaminants because of their unique adsorption characteristics. Environmental remediations using metal and MNPs are also favorable due to their facile magnetic separation and unique metal-ion adsorption. The modified nZVI showed less toxicity towards soil bacteria than bare nZVI; thus, modifying or coating nZVI could reduce its ecotoxicity. The combination of nanoremediation with other remediation technology is shown to be a valuable soil remediation technique as the synergetic effects may increase the sustainability of the applied process towards green technology for soil remediation.

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Section: Mwcntsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Recent Advances of Nanoremediation Technologies for Soil and Groundwater Remediation: A Review

Alazaiza

Albahnasawi

Ali

et al. 2021

Water

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“…Behaviour of NAPL-derived organic pollutants in aquifer systems mainly depends on dissolution of the contaminants within the source zone, the mass transfer to the flowing groundwater, advection, dispersion, diffusion, sorption (retardation) and biodegradation (Aminnaji et al 2020). The contamination of groundwater by NALPs is a challenging environmental problem that poses risks to both human and the environment (Tsai et al, 2008); thus, soil and groundwater remediation, to achieve environmental sustainability and protect human health, has become the shared vision of various stakeholders, including governments, world organizations, and the public (Honetschlägerová et al, 2019). Numerous remediation technologies have been employed to remove NAPLs from soil and groundwater during the last few decades.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Chemical Oxidation Based Remediation technologies for Non-Aqueous Phase Liquids Removal from Soil

2022

Global NEST: The International Journal

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<p>This review provides a general overview of the application of chemical oxidation to hydrophobic contaminants in the form of non-aqueous phase liquids (NAPLs). Three types of chemical oxidation processes, conventional activated persulfate, permanganate, and ozonation, along with three advanced oxidation processes (AOPs), the Fenton process, photocatalysis, and plasma oxidation are presented discussed. In addition, this paper provides a brief insight into the combination of chemical oxidation with other remediation technologies for the efficient removal of NAPLs. The common and wide use of activated persulfate for soil remediation is hindered by the fact that it needs heat activation, whereas the main drawback of using permanganate is the precipitation of manganese oxide at the NAPLs face. In addition, the high cost of equipment at the site restricts the ozone application for in-suit soil remediation. The application of AOPs processes such as Fenton and plasma oxidation has received great attention due to its high removal efficiency. However, photocatalysis technology in the field is difficult because it needs photo energy to run the oxidation process. Although plasma oxidation can degrade contaminants in minutes, some active species have short-lived time that could disappear before entering the soil layer. Ozonation is efficient in treat soils with low moisture and large pore spaces. Nevertheless, the optimal pH for ozonation oxidation is 3, which is hard to achieve in real-world applications. Combining chemical oxidation with other remediation technology is a valuable technique of soil remediation as the synergetic effects may increase the sustainability of the applied process towards green technology for soil remediation.</p>

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“…The efficiency of such bioremediation after the aggressive chemical oxidation is variable due to the unpredictable effect of the ISCO on original systems. Consequently, studies on the effect of ISCO on in situ bioremediation efficiency involve some controversy . According to some studies, the coupling of ISCO and bioremediation is advantageous because this reduces the mass of the toxic chemicals and/or converts some to more biodegradable compounds .…”

Section: Introductionmentioning

confidence: 99%

“…Although a pilot-scale ISCO study has been performed recently, the effects of chemical oxidants on the microbial communities of aquifer soils still remain vaguely understood. Further, in addition to the oxidant, the resulting variation in local geochemical parameters strongly affects the dynamics of the microbial communities in soils . For this reason, a combined assessment of the geochemical and microbial responses can enhance understanding of the role of microbial communities in the resilience of aquifer soil against oxidant-induced perturbations.…”

Section: Introductionmentioning

confidence: 99%

Biogeochemical Alteration of an Aquifer Soil during In Situ Chemical Oxidation by Hydrogen Peroxide and Peroxymonosulfate

Kim

Park

Adil

et al. 2021

Environ. Sci. Technol.

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In this study, the effects of in situ chemical oxidation (ISCO) on the biogeochemical properties of an aquifer soil were evaluated. Microcosms packed with an aquifer soil were investigated for 4 months in two phases including oxidant exposure (phase I) and biostimulation involving acetate addition (phase II). The geochemical and microbial alterations from different concentrations (0.2 and 50 mM) of hydrogen peroxide (HP) and peroxymonosulfate (PMS) were assessed. The 50 mM PMS-treated sample exhibited the most significant geochemical changes, characterized by the decrease in pH and the presence of more crystalline phases. Microbial activity decreased for all ISCO-treated microcosms compared to the controls; particularly, the activity was severely inhibited at high PMS concentration exposure. The soil microbial community structures were shifted after the ISCO treatment, with the high PMS causing the most distinct changes. Microbes such as the Azotobacter chroococcum and Gerobacter spp. increased during phase II of the ISCO treatment, indicating these bacterial communities can promote organic degradation despite the oxidants exposure. The HP (low and high concentrations) and low concentration PMS exposure temporarily impacted the microbial activity, with recovery after some duration, whereas the microbial activity was less recovered after the high concentration PMS exposure. These results suggest that the use of HP and low concentration PMS are suitable ISCO strategies for aquifer soil bioattenuation.

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Coupling in situ chemical oxidation with bioremediation of chloroethenes: a review

Cited by 17 publications

References 114 publications

Recent Advances of Nanoremediation Technologies for Soil and Groundwater Remediation: A Review

Recent Advances of Nanoremediation Technologies for Soil and Groundwater Remediation: A Review

An Overview of Chemical Oxidation Based Remediation technologies for Non-Aqueous Phase Liquids Removal from Soil

Biogeochemical Alteration of an Aquifer Soil during In Situ Chemical Oxidation by Hydrogen Peroxide and Peroxymonosulfate

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