Use of Biofilm Permeable Reactive Barriers for the In Situ Remediation of Mobile Contaminants
Youngwoo Young Seo
from: Biofilms in Bioremediation: Current Research and Emerging Technologies (Edited by: Gavin Lear). Caister Academic Press, U.K. (2016) Pages: 201-218.
Bioremediation has been used for the destruction of organic chemicals in soils, groundwater and industrial wastewaters and can be categorized into both in-situ and ex-situ remediation strategies. Among in-situ bioremediation technologies, the use of engineered permeable reactive barriers (PRBs) within contaminated aquifers has grown as a way to prevent the migration of mobile pollutants from contaminated plumes with minimal maintenance costs. During the past decade, PRBs have become an important in-situ remediation option for contaminated groundwater. However, the influence of biofilm formation on the performance of PRBs is not well understood yet. This chapter reviews the influence of biofilm formation on the performance of PRBs for the continued removal of mobile contaminants. First, the general application of biofilm-mediated processes for the remediation of soil and groundwater bioremediation is discussed. Second, the use of PRBs incorporating biofilm grown on different supporting media is reviewed. Third, the influence of biofilm formation on the long term performances of PRBs is evaluated. Finally, emerging research trends and needs of relevance to the use of PRBs in remediation are considered read more ...