Particles and enzymes: Combining nanoscale zero valent iron and organochlorine respiring bacteria for the detoxification of chloroethane mixtures

Koenig, Joanna; Boparai, Hardiljeet K.; Lee, Matthew J.; O'Carroll, D. M.; Barnes, Robert J.; Manefield, Michael

doi:10.1016/j.jhazmat.2015.12.036

Cited by 55 publications

(18 citation statements)

References 48 publications

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“…In field application, abiotic remediation processes cannot be considered separately from biotic processes (Brown et al 2009;Koenig et al 2016;Němeček et al 2016;Wang et al 2016;Cecchinc et al 2017;You et al 2017;Xu et al 2017;Vogel et al 2018). Indeed, iron particles have several effects on the microbial activity and growth.…”

Section: Combination Of Iron-based Particles With Other Techniquesmentioning

confidence: 99%

In Situ Chemical Reduction of Chlorinated Organic Compounds

Rodrigues

Betelu

Colombano

et al. 2020

Applied Environmental Science and Engineering for a Sustainable Future

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Chlorinated organic compounds (COCs) are common anthropogenic contaminants of soil and groundwater. COCs were industrially produced for different applications, such as dry cleaning, degreasing, or as pesticides. The presence of COCs in the environment is a major concern because of their toxicity and persistence.The most widely used method for their remediation is the conventional pump-and-treat system. However, this technology can hardly achieve a complete remediation because of geological characteristics and the presence of pore space pollution/adsorbed pollution, leading to a residual saturation. Hence, in addition to the improvement of pump-and-treat systems, in situ chemical processes have been largely developed. These chemical processes involve the injection of chemical reagents for the removal of residual source pollution and/or the treatment of plume contamination. Chemical degradation of COCs can be achieved by oxidative or reductive processes. If chemical oxidation has been first developed for in situ application, chemical reduction is one of the most important emerging remediation techniques for COCs treatment. Due to the electronegative character of chlorine substituents, COCs can effectively be transformed via reductive pathways. Moreover, reductive dechlorination has shown higher efficiency on highly chlorinated compounds. This chapter focuses on the presentation of the chemical reduction of the most common COCs pollutants, followed by kinetic and mechanistic approaches related to the use of iron-based particles. Developments on in situ chemical reduction technologies in order to enhance remediation rates are also exposed. Influence of environmental conditions for in situ applications is then developed. Finally, a case study is presented.

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Section: Combination Of Iron-based Particles With Other Techniquesmentioning

confidence: 99%

In Situ Chemical Reduction of Chlorinated Organic Compounds

Rodrigues

Betelu

Colombano

et al. 2020

Applied Environmental Science and Engineering for a Sustainable Future

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“…Koeniga et al. () proposed a unique treatment train combining nZVI and organochlorine respiring bacteria, which, when applied at appropriate doses, can potentially treat a wider range of chlorinated aliphatic hydrocarbons than each individual remedy. Combining two Cr(VI) geofixation methods—chemical reduction by nZVI and subsequent biotic reduction supported by whey—resulted in a further and long‐term decrease in the Cr(VI) and chlorinated solvents concentrations in groundwater (Nemecek et al., , ).…”

Section: Risk‐benefit Appraisal For Nanorem Technologiesmentioning

confidence: 99%

“…Indeed, Lacinová,Černíková, Hrabal, andČerník (2013) showed that in field tests sequentially combining nZVI and in situ biostimulation achieved greater reduction in chlorinated solvents in a contaminated aquifer (76 percent compared to 48 percent for nZVI alone). Koeniga et al (2016) proposed a unique treatment train combining nZVI and organochlorine respiring bacteria, which, when applied at appropriate doses, can potentially treat a wider range of chlorinated aliphatic hydrocarbons than each individual remedy. Combining two Cr(VI) geofixation methods-chemical reduction by nZVI and subsequent biotic reduction supported by whey-resulted in a further and long-term decrease in the Cr(VI) and chlorinated solvents concentrations in groundwater (Nemecek et al, 2015(Nemecek et al, , 2016.…”

Section: Synergy and Enhancement Effectmentioning

confidence: 99%

Status of nanoremediation and its potential for future deployment: Risk‐benefit and benchmarking appraisals

Bardos¹,

Merly²,

Kvapil

et al. 2018

Remediation Journal

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NanoRem (Taking Nanotechnological Remediation Processes from Lab Scale to End User Applications for the Restoration of a Clean Environment) was a research project, funded through the European Commission's Seventh Framework Programme, which focuses on facilitating practical, safe, economic, and exploitable nanotechnology for in situ remediation of polluted soil and groundwater, which closed in January 2017. This article describes the status of the nanoremediation implementation and future opportunities for deployment based on risk‐benefit appraisal and benchmarking undertaken in the NanoRem Project. As of November 2016, NanoRem identified 100 deployments of nanoremediation in the field. While the majority of these are pilot‐scale deployments, there are a number of large scale deployments over the last five to 10 years. Most applications have been for plume control (i.e., pathway management in groundwater), but a number of source control measures appear to have taken place. Nanoremediation has been most frequently applied to problems of chlorinated solvents and metals (such as chromium VI). The perception of risk‐benefit balance for nanoremediation has shifted as the NanoRem Project has proceeded. Niche benefits are now more strongly recognized, and some (if not most) of the concerns, for example, relating to environmental risks of nanoremediation deployment, prevalent when the project was proposed and initiated, have been addressed. Indeed, these now appear overstated. However, it appears to remain the case that in some jurisdictions the use of nanoparticles remains less attractive owing to regulatory concerns and/or a lack of awareness, meaning that regulators may demand additional verification measures compared to technologies with which they have a greater level of comfort.

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“…Iron nanoparticles are the first ones to be considered as a tool for environmental clean-up [60][61][62] . Environmental clean-up methods for the remediation of contaminated land or groundwater are using Iron either as a sorbent for adsorbing contaminants by injecting it into subsurface environments at the contaminated sites or as an electron donor to reduce contaminants into a less toxic form [63][64][65] .Few methods of decontamination use both the sorption and electron donor nature of iron nanoparticles [66][67] . Apart from IronNPs, ZincNPs, GoldNPs SilverNPs,CopperNPs are also ben extensively studied for their role as decontaminant 68,79 .…”

Section: Nano-remediation Of the Contaminated Sitesmentioning

confidence: 99%

Prospects of Nanobioremediation in Environmental Cleanup

Pandey

2018

Orient. J. Chem

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This century is struggling with the issue of environment friendly management of the pollutants which are contaminating the environment. One of an ecofriendly and economically feasible method is the bioremediation of pollutants using bio nanoparticles. Nanobioremediation is a highly studied and explored area of remediation of contaminants using nanotechnology. Nanoparticles used for bioremediation are biologically synthesized from plant extracts, fungi and bacteria. These biogenic nanoparticles when applied to environmental contaminants had shown very promising results. Based on the various studies the bioremediation of pollutants using biosynthetic nanoparticles is emerging as a very promising and sustainable method of environment cleanup. This review focuses on the synthesis of bio-nanoparticles and their use in cleaning the environment.

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Particles and enzymes: Combining nanoscale zero valent iron and organochlorine respiring bacteria for the detoxification of chloroethane mixtures

Cited by 55 publications

References 48 publications

In Situ Chemical Reduction of Chlorinated Organic Compounds

In Situ Chemical Reduction of Chlorinated Organic Compounds

Status of nanoremediation and its potential for future deployment: Risk‐benefit and benchmarking appraisals

Prospects of Nanobioremediation in Environmental Cleanup

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