کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9607703 | 45147 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Continuous decolorization of anaerobically digested distillery wastewater
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The aim of this research work was to decolorize anaerobically digested (UASB) and aerobically treated distillery wastewater of a process for ethanol production. An Aspergillus species isolated from the soil was used for decolorization. A sequential Plackett-Burman design in three stages was used for optimization of decolorization conditions. Both maximum decolorization and COD reduction under optimized conditions were obtained as 84%. By implementing the optimum values in a pilot scale of an activated sludge system a continuous process for decolorization was conducted. The decolorization efficiency of this system with 48Â h retention time was about 75% in a limited period of 4 days. For extension of the decolorization period in a continuous process a sequencing batch reactor was used. This system with a cycle time of about 4.5Â h and decolorization efficiency of 70% extended for 12 days which was more than previous reported works. The colour of undiluted wastewater reduced by only 40% with a cycle time of 17.5Â h and the system was stable for about 4 days.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Biochemistry - Volume 40, Issues 3â4, March 2005, Pages 1323-1329
Journal: Process Biochemistry - Volume 40, Issues 3â4, March 2005, Pages 1323-1329
نویسندگان
Jalal Shayegan, Mohammad Pazouki, Abbas Afshari,