A critical review of recent advances in the bio-remediation of ...
Nov 15, 2022 · A significant health risk is associated with chlorinated hydrocarbon contamination in soils and groundwater. Microbial reductive dechlorination, one of the major pathways of chlorinated hydrocarbon degradation, has been extensively studied in …
Coupling in situ chemical oxidation with bioremediation of ...
Chloroethenes are a significant source of soil and groundwater pollution that represents serious risk to environment and human health worldwide. Coupled ISB and ISCO is considered as a possible clean-up alternative for chloroethenes remediation offering efficient and environmental friendly solution for removal of these contaminants from the ...
Biotic and abiotic reductive dechlorination of chloroethenes in ...
Apr 10, 2022 · Chloroethenes degradation in aquitards occurs mainly in the matrix near fractures. •. Parent and metabolite haloes in matrix and isotopic fractioning reveal degradation. •. Textural changes favor microbial development and give rise to ecotones. •. Dimethylacetamide, as a new trap, serves to measure δ 13 C of matrix chloroethenes. •.
De Novo Formation of Chloroethyne in Soil
In this paper, it is shown that the highly reactive chloroethyne is also a product of natural processes in soil. Soil air samples from three different terrestrial ecosystems of Northern Germany showed significant chloroethyne concentrations, besides other naturally produced monochlorinated compounds, such as chloromethane, chloroethane and ...
Reductive dechlorination of high concentrations of …
Jan 1, 2019 · Chloroethenes are common groundwater and soil contaminants due to extensive historic utilization and inappropriate discharge. The tendency for chloroethenes to become sequestered as dense non-aqueous phase liquids (DNAPL)-a point source to groundwater contamination and causing high concentrations of ….
Chloroethene Biotransformation in the Presence of Different …
Nov 28, 2011 · This paper aims to reconcile discrepancies among reports of dechlorination performance in the presence of sulfate, by analyzing data from the literature, presenting results from laboratory experiments performed with mixed anaerobic microbial cultures, and synthesizing respective findings.
Aerobic biodegradation of the chloroethenes: pathways, enzymes, …
Jul 1, 2010 · Anaerobic dechlorinating bacteria are promising agents for the bioremediation of chloroethene-contaminated sites because they appear to be widespread, they are active under the anoxic conditions typically encountered in the subsurface, and some can catalyze the complete reduction of PCE and TCE to ethene (Freedman & Gossett, 1989; Maymó-Gatell ...
In-Situ Bioremediation of Chloroethene-Contaminated Soil
The process combined dechlorination of tetrachloroethene (PCE), aerobic co-metabolic mineralisation of lower chlorinated ethenes, and on-site treatment of groundwater and soil vapor. This paper summarises the results of the laboratory research, and focuses on the concept of the proposed in-situ remediation.
In Situ Bioremediation of Chloroethene Contaminated Soil. Arne Alphenaar, John Vijgen, Jan Gerritse, Frank Spuij, Jan Gottschal. 1. Introduction. In the Netherlands as well as in Germany, approx. 20-30% of the seriously con taminated sites are …
Field demonstration of biostimulation with wine pomace extract at …
Feb 1, 2023 · In this study, with the aim of evaluating biostimulation with WPE, we injected WPE into soil by the natural infiltration method to (1) decrease the concentrations of chloroethenes in groundwater and soil, (2) estimate the infiltration of WPE in soil on the basis of changes in groundwater properties after injection, and (3) study the effects of ...
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