Remediation of Groundwater Contaminated by BTEX Using a Biological Barrier

Abstract:

In this study, a biological permeable reactive barrier system was designed to evaluate the remediation effectiveness of BTEX-contaminated groundwater. The biological barrier using immobilized bio-beads encapsulated with calcium alginate and activated carbon fiber as microbial carrier is able to biodegrade BTEX entering the barrier system. A laboratory-scale experiment using one continuous up-flow stainless steel column was then performed to evaluate the feasibility of this designed system. The second column was filled with bio-beads immobilizing BTEX-degrading microbial consortium. Simulated BTEX-contaminated groundwater, in which dissolved oxygen (DO) content was saturated, was pumped into this system at a flow rate of 0.07ml/min. Samples from the column were analyzed for BTEX and effluent DO. Results showed that BTEX could be well removed in this biological barrier.

• Periodical: Advanced Materials Research (Volume 178)
• Pages: 254-259
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.178.254
• Online since: December 2010
• Authors: Xiu Li Liu, Lin Zhao, She Jiang Liu, Cheng Yang Cui
• Keywords: Biological Barrier, Ground Water, PECVD, Remediation

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