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A field trial for in-situ bioremediation of 1,2-DCA

Dyer, M. and van Heiningen, E. and Gerritse, J. (2003) A field trial for in-situ bioremediation of 1,2-DCA. Engineering Geology, 70 (4). pp. 315-320. ISSN 0013-7952

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Abstract

Historic spillages of chlorinated hydrocarbons at previous termanext term vinyl chloride plant in the Rotterdam Botlek area in The Netherlands have lead to contamination of the underlying aquifer. The principal contaminant is 1,2-dichloroethane (1,2-previous termDCA)next term. The contamination is temporarily contained by previous termanext term pump-and-treat system. previous termA field trialnext term was carried out to investigate the feasibility of treating the dissolved phase of 1,2-previous termDCAnext term via reductive dechlorination by injection of an aqueous solution of methanol, ammonium chloride and sodium chloride into the confined aquifer using an array of eight boreholes. Biodegradation of 1,2-previous termDCAnext term was localised. This was attributed to limited mixing of the carbon substrate within the test zone. In addition, clogging of recharge wells complicated groundwater circulation.