کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7075776 1459969 2014 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced reduction of waste activated sludge at a low temperature by locally isolated strains Pseudomonas sp. VNT and Aeromonas sp. VNT
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Enhanced reduction of waste activated sludge at a low temperature by locally isolated strains Pseudomonas sp. VNT and Aeromonas sp. VNT
چکیده انگلیسی
Appropriate control of waste activated sludge (WAS) is required to solve the annual increment of WAS volume. The low bacterial activity at low temperatures poses a difficulty in reducing or utilizing WAS in cold weather regions and/or during the winter season. This study reveals a practical method to enhance sludge reduction at a low temperature using isolated strains of Pseudomonas and Aeromonas species. The effect of inoculating each strain into WAS was examined at different temperatures (4 °C, 10 °C, 12 °C, 15 °C, 20 °C, and 30 °C) and under an aerobic condition. Sludge reduction showed 2- to 8-fold improvement at the temperature range from 4 °C to 15 °C. Both strains are psychrophilic and can produce protease and lipase for sludge degradation even at low temperatures. Thus, biological WAS treatment at a psychrophilic temperature can be enhanced by inoculating these promising strains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 174, December 2014, Pages 134-141
نویسندگان
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