BIOREMEDIATION OF PETROLEUM-HYDROCARBONS IN SOIL COLUMN LYSIMETERS FROM KWAJALEIN ISLAND

Soil column studies were used to evaluate petroleum hydrocarbon (PHC) remediation in soils from Kwajalein Atoll. Treatments included control s, and combinations of water, air, nutrients, and bioaugmentation with indigenous microbes (W, A, N, and M, respectively). Microbial colony forming units (CFU) decreased in the control columns and in treatments without air. Treatments including W + A + N and W + A + N + M exhibit ed increased CFU. One third of the PHC was removed by water and anothe r third was removed by W + A + N and W + A + N + M treatments. Bioaugm entation with indigenous PHC degraders did not enhance bioremediation. Potential for bioremediation was demonstrated by air, water, and nutr ient amendments.