Engineering of Bioremediation Processes: A Critical Review
Engineered bioremediation systems endeavor to channel natural processes for enhancing biodegradation of organic constituents dissolved in groundwater and adsorbed onto the soil or aquifer matrix. A wide range of bioremediation strategies have been developed for the treatment of contaminated soils using natural and modified microorganisms. Microbial degradation of xenobiotic compounds often involves redox chemistry, or reactions involving a transfer of electrons. Environmental remediation by bioaugmentation means adding supplemental microbes to an environment where native organisms are unable to degrade the contaminants present at the site. Spray drying and vacuum drying have less of a history in microbial engineering. Spray drying is a well established method of food preservation, and could be a suitable method for preserving microorganisms for bioremediation, as it allows large-scale culture dehydration at the low cost.