کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4423507 1308830 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of the aerobic biodegradation of trichloroethylene via response surface methodology
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Evaluation of the aerobic biodegradation of trichloroethylene via response surface methodology
چکیده انگلیسی

Response surface methodology (RSM) was used to evaluate the effect of additives for enhancing the aerobic biodegradation of trichloroethylene (TCE). The parameters investigated include the initial TCE concentration, addition of extra bacteria, use of toluene as an inducer and hydrogen peroxide as terminal electron acceptor (TEA). Without additive, degradation efficiencies of ≥ 80% were obtained for TCE concentrations < 700 mg/L. According to the second-order polynomial RSM and biodegradation results, the use of toluene to induce enzyme production inhibited degradation at TCE concentrations < 300 mg/L. The addition of hydrogen peroxide did improve the overall degradation efficiency but decreased the degradation rate. The RSM model for toluene, extra bacteria and TEA predicted that the best approach to optimize degradation of high TCE concentrations is to ensure adequate population in conjunction with supplemental TEA.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environment International - Volume 33, Issue 3, April 2007, Pages 338–345
نویسندگان
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