Application of aerobic bioremediation to cleanup octachlorinated dibenzofuran polluted soils

摘要

In this study, effectiveness of using Pseudomonas mendocina NSYSU (P. mendocina NSYSU) on the bioremediation of octachlorinated dibenzofuran (OCDF)-polluted soils was evaluated through batch and bioreactor experiments under aerobic conditions. The goal of the research were to assess the feasibility of biodegradation of OCDF by indigenous soil bacteria and isolated bacterial strain (P. mendocina NSYSU) from OCDF-polluted soils, and Results show that P. mendocina NSYSU was able to degrade OCDF through the aerobic cometabolic mechanisms with the addition of carbon substrates. Up to 62% of OCDF was removed after a 50-day operation with carbon substrate supplement. Results indicate that primary substrate supplement is required for the enhancement of aerobic biodegradation of OCDF, and OCDF could not been used as the sole carbon source for the growth of P. mendocina NSYSU. Results reveal that an aerobic bioremediation system using P mendocina NSYSU as the inocula would be a cost-effective system to remediate furan-polluted soils.