A bioventing feasibility test to aid remediation strategy

Abstract

A case study is presented where the feasibility of bioventing was assessed for the remediation of a petroleum-contaminated site. This was achieved through the determination of the radius of influence of a single vent well, the soil gas permeability of the site and the oxygen utilisation rate of the in situ micro-organisms. The on-site test used one vent well and three monitoring wells. 5 m was determined. 8 Darcy was measured. 32% (v/v) O 2/h indicated that an active microbial population existed in situ. The theoretical biodegradation rate was calculated to be 752 mg hydrocarbon (based on hexane)/kg soil·month.

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