Evaluation of Three Electron-Donor Permeable Reactive Barrier Materials for Enhanced Reductive Dechlorination of Trichloroethene

2009 ◽  
Vol 13 (1) ◽  
pp. 7-20 ◽  
Author(s):  
Elizabeth S. Semkiw ◽  
Michael J. Dybas ◽  
Michael J. Barcelona
Keyword(s):  
Electron Donor ◽  
Reductive Dechlorination ◽  
Permeable Reactive Barrier ◽  
Barrier Materials ◽  
Reactive Barrier ◽  
Enhanced Reductive Dechlorination

scholarly journals Pilot-Scale Evaluation of a Permeable Reactive Barrier with Compost and Brown Coal to Treat Groundwater Contaminated with Trichloroethylene

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1922 ◽  
Author(s):  
S. Johana Grajales-Mesa ◽  
Grzegorz Malina
Keyword(s):  
Brown Coal ◽  
Reductive Dechlorination ◽  
Experimental Period ◽  
Pilot Scale ◽  
Permeable Reactive Barrier ◽  
Residence Times ◽  
Contaminated Aquifer ◽  
Scale Evaluation ◽  
Mixing Ratios ◽  
Reactive Barrier

This study evaluates, under field conditions, the efficiency of a permeable reactive barrier (PRB) with compost and brown coal to remove trichloroethylene (TCE) (109 µg/L) from contaminated groundwater. Three stainless steel boxes (1.2 × 0.5 × 0.5 m) with the brown coal-compost mixture at three different mixing ratios of 1:1, 1:3, and 1:5 (by volume) were installed to simulate the PRB. Groundwater from the TCE-contaminated aquifer was pumped into the system at a flow rate of 3.6 L/h. Residence times in the boxes were of: 25, 20, 10 h, respectively. Effluent samples were analyzed for TCE and its daughter products: dichloroethylene (DCE), vinyl chloride (VC) and ethane. During the 198-day experimental period TCE concentrations in groundwater decreased below ≤1.1 µg/L, i.e., much lower than groundwater and drinking water standards in Poland. After 16 days cis-1,2-DCE was monitored indicating possible reductive dechlorination of TCE. However, complete transformation of TCE into non-toxic byproducts was not evidenced during the time of experiments, indicating that reductive dechlorination slowed down or stopped at DCE, and that the designed residence times were not long enough to allow the complete dechlorination process.

Evaluation of peat and sawdust as permeable reactive barrier materials for stimulating in situ biodegradation of trichloroethene

2016 ◽  
Vol 313 ◽  
pp. 37-48 ◽  
Author(s):  
Pulin K. Mondal ◽  
Glaucia Lima ◽  
David Zhang ◽  
Line Lomheim ◽  
Robert W. Tossell ◽  
...  
Keyword(s):  
Permeable Reactive Barrier ◽  
Barrier Materials ◽  
Reactive Barrier ◽  
In Situ Biodegradation

Cathodic Hydrogen as Electron Donor in Enhanced Reductive Dechlorination

2013 ◽  
Vol 21 (12) ◽  
pp. 1386-1390 ◽  
Author(s):  
Ruiling ZHANG ◽  
Xiaoxia LU ◽  
Danny D. Reible ◽  
Gangzhen JIAO ◽  
Songyan QIN
Keyword(s):  
Electron Donor ◽  
Reductive Dechlorination ◽  
Enhanced Reductive Dechlorination

scholarly journals A bibliometric analysis of permeable reactive barrier enhanced electrokinetic treatment for sustainable polluted soil remediation

2021 ◽  
Vol 894 (1) ◽  
pp. 012034
Author(s):  
M A Budihardjo ◽  
R P Safitri ◽  
B S Ramadan ◽  
A J Effendi ◽  
S Hidayat ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Soil Remediation ◽  
Environmental Science ◽  
Electrokinetic Remediation ◽  
Permeable Reactive Barriers ◽  
Permeable Reactive Barrier ◽  
Bibliographic Analysis ◽  
Barrier Materials ◽  
Reactive Barrier ◽  
Pollutants Removal

Abstract Research on soil remediation continues to develop, one of which is electrokinetic remediation combined with a permeable reactive barrier as a medium to prevent the migration of metals removed from the anode and cathode spaces. Thus, it is hoped that there is no need for reprocessing the residue resulting from electrokinetic remediation. This study aims to conduct a bibliographical analysis related to electrokinetic remediation coupled by permeable reactive barriers for heavy metal contaminated soil and to examine the effect of using various types of reactive barrier materials and their placement on the pollutants removal in the soil. Based on the results of bibliographic analysis, 26 relevant scientific articles were obtained, and the most publications in 2020 with 27% additional article publications are found. China and Environmental Science and Pollutant Research are the countries and journals that contribute the most to publications related to EK-PRB on heavy metal polluted soils.

scholarly journals A Microcosm Treatability Study for Evaluating Wood Mulch-Based Amendments as Electron Donors for Trichloroethene (TCE) Reductive Dechlorination

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1949
Author(s):  
Edoardo Masut ◽  
Alessandro Battaglia ◽  
Luca Ferioli ◽  
Anna Legnani ◽  
Carolina Cruz Viggi ◽  
...  
Keyword(s):  
Electron Donor ◽  
Environmental Sustainability ◽  
Reductive Dechlorination ◽  
Environmental Remediation ◽  
Low Cost ◽  
Chlorinated Solvents ◽  
Electron Donors ◽  
Chlorinated Ethenes ◽  
Dehalococcoides Mccartyi ◽  
Wood Mulch

In this study, wood mulch-based amendments were tested in a bench-scale microcosm experiment in order to assess the treatability of saturated soils and groundwater from an industrial site contaminated by chlorinated ethenes. Wood mulch was tested alone as the only electron donor in order to assess its potential for stimulating the biological reductive dechlorination. It was also tested in combination with millimetric iron filings in order to assess the ability of the additive to accelerate/improve the bioremediation process. The efficacy of the selected amendments was compared with that of unamended control microcosms. The results demonstrated that wood mulch is an effective natural and low-cost electron donor to stimulate the complete reductive dechlorination of chlorinated solvents to ethene. Being a side-product of the wood industry, mulch can be used in environmental remediation, an approach which perfectly fits the principles of circular economy and addresses the compelling needs of a sustainable and low environmental impact remediation. The efficacy of mulch was further improved by the co-presence of iron filings, which accelerated the conversion of vinyl chloride into the ethene by increasing the H2 availability rather than by catalyzing the direct abiotic dechlorination of contaminants. Chemical analyses were corroborated by biomolecular assays, which confirmed the stimulatory effect of the selected amendments on the abundance of Dehalococcoides mccartyi and related reductive dehalogenase genes. Overall, this paper further highlights the application potential and environmental sustainability of wood mulch-based amendments as low-cost electron donors for the biological treatment of chlorinated ethenes.

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