کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1055716 1485276 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wet air oxidation induced enhanced biodegradability of distillery effluent
ترجمه فارسی عنوان
اکسیداسیون هوای مرطوب موجب افزایش زیست تخریب پذیری پساب ریخته گری شده است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• WAO pretreatment resulted in the biodegradability enhancement of complex effluent.
• The biodegradation rate was significantly higher in pretreated effluent.
• Higher COD reduction was obtained during anaerobic–aerobic biodegradation study.
• Biokinetic parameters also confirmed the enhanced rate of biodegradation.

The present study reports the feasibility of Wet Air Oxidation (WAO) as a pretreatment option for enhanced biodegradation of complex distillery effluent. Initially, the distillery effluent was pretreated by WAO at different process conditions (pressure, temperature and time) to facilitate enhancement in the biodegradability index (BI = BOD5: COD ratio). The biodegradability of WAO pretreated effluent was evaluated by subjecting it to aerobic biodegradation and anaerobic followed by aerobic biodegradation. Aerobic biodegradation of pretreated effluent with enhanced biodegradability index (BI = 0.4–0.8) showed enhanced COD reduction of up to 67.7%, whereas the untreated effluent (BI = 0.17) indicated poor COD reduction of only 22.5%. Anaerobic followed by aerobic biodegradation of pretreated effluent has shown up to 87.9% COD reduction, while the untreated effluent has shown only 43.1% COD reduction. Bio-kinetic parameters also confirmed the increased rate of bio-oxidation at enhanced BIs. The results indicate that the WAO pretreatment facilitates enhanced bio-oxidation/bio-degradation of complex effluents like the distillery spent wash.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 136, 1 April 2014, Pages 132–138
نویسندگان
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