Degradation of Chloropyrifos Using Free and Sol-gel Immobilized Bacteria
Rafik Helles, Abdelraouf Ali Elmanama, Mona Ishak Fahed, Mai Hussien, Azmi Abu Daka; aboghalia, hoda;
Abstract
Chlorpyrifos-degrading bacteria were isolated from Khan-Younes soil and identified as Burkholderia cepacia. The ability of the strain to degrade chlorpyrifos was examined using both free and sol-gel immobilized bacteria using 200 mg/L chlorpyrifos. The concentration of the pesticides was lowered to less than 4 mg/Land 58 mg/L for free and immobilized bacteria respectively. Higher degradation rate of chlorpyrifos was observed for free bacteria compared with immobilized bacteria. Optimum pH was found to be 7 for the degradation process for both immobilized and free bacteria. Temperature has an effect on the degradation of chlorpyrifos by the two forms of bacteria; maximum degradation was observed at 30˚C.
Other data
| Title | Degradation of Chloropyrifos Using Free and Sol-gel Immobilized Bacteria | Authors | Rafik Helles, Abdelraouf Ali Elmanama, Mona Ishak Fahed, Mai Hussien, Azmi Abu Daka ; aboghalia, hoda | Keywords | Chlorpyrifos; Degradation; Sol-gel; Burkholderia cepacia | Issue Date | 2008 | Journal | Journal of Analytical Chemistry |
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