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Electrokinetically-Enhanced Emplacement Of Lactate In A Chlorinated Solvent Contaminated Clay Site To Promote Bioremediation, Ainsley M. Inglis
Electrokinetically-Enhanced Emplacement Of Lactate In A Chlorinated Solvent Contaminated Clay Site To Promote Bioremediation, Ainsley M. Inglis
Electronic Thesis and Dissertation Repository
Bioremediation through the injection of electron donors and bacterial cultures is effective at treating chlorinated solvent contamination but faces limitations in low permeability zones where the injected amendments cannot be delivered successfully. Using electrokinetics in combination with bioremediation to enhance the delivery of amendments was tested at a chlorinated solvent contaminated field site, where lactate was injected into clay under a direct current. Advection at locations with higher hydraulic conductivities contributed to lactate transport and dilution of aqueous chlorinated solvents. There was evidence of successful delivery of lactate by electromigration (EM) in all monitoring locations with EM lactate transport rates …
Role Of Zero Valent Iron And Organic Substrates In Chlorinated Solvent Degradation: An Ex-Situ Remediation Case Study, Alexander Stevenson
Role Of Zero Valent Iron And Organic Substrates In Chlorinated Solvent Degradation: An Ex-Situ Remediation Case Study, Alexander Stevenson
Electronic Thesis and Dissertation Repository
Field practice suggests that a combination of biotic and abiotic technologies to treat soil impacted by chlorinated solvents positively influences a remediation project’s success rate. Two large remediation programs have used a material containing both zero-valent iron (ZVI) and a dry organic substrate to abiotically reduce contaminants and increase anaerobic bioremediation in soil contaminated with tetrachloroethylene and 1,2-dichloroethylene using ex-situ mixing techniques. This research assesses the contributions made by the dry organic substrate and ZVI to the observed changes in chlorinated solvent concentrations by analyzing field samples collected from the sites previously remediated, as well as conducting bench-scale batch reactor …