Abstract
A lab-scale biofilter system packed with a mixture of bamboo-clay and turkey litter compost (novel) was developed to remove trichloroethylene (TCE) vapor which was artificially generated. After 60 days of a start-up, the maximum removal efficiency of 90% achieved at a loading rate of 43 g m−3 h−1 with empty bed residence time (EBRT) of 1.6 min in continuous mode. About 65% of TCE eliminated at the first 18 cm of the bed height. During biofiltration, the pressure drop found to vary in acceptable ranges of 20–71 mmHg m−1. The carbon dioxide (CO2) production profile confirms that the TCE mineralized by mixed culture. The compost biofilter showed a quick response to the transient condition. The biokinetic constants estimated and explained the behavior of TCE biofiltration. This is the first study to provide a promising tool for the removal of a high concentrated TCE in a novel packed bed biofilter.
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