کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
680202 1459966 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous treatment of raw palm oil mill effluent and biodegradation of palm fiber in a high-rate CSTR
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Simultaneous treatment of raw palm oil mill effluent and biodegradation of palm fiber in a high-rate CSTR
چکیده انگلیسی


• A modified CSTR was used to treat raw palm oil mill effluent without pretreatment.
• Neither physical nor chemical pretreatment of the raw POME was performed.
• The deflector installed at the CSTR’s upper section promoted retention of fibers.
• Simultaneous degradations of palm fibers and soluble parts in POME were achieved.
• Methane production rate was 4.14 l/l d at a highest OLR 19.0 g COD/l d.

A high-rate continuous stirred tank reactor (CSTR) was used to produce biogas from raw palm oil mill effluent (POME) at 55 °C at a highest organic loading rate (OLR) of 19 g COD/l d. Physical and chemical pretreatments were not performed on the raw POME. In order to promote retention of suspended solids, the CSTR was installed with a deflector at its upper section. The average methane yield was 0.27 l/g COD, and the biogas production rate per reactor volume was 6.23 l/l d, and the tCOD removal efficiency was 82%. The hydrolysis rate of cellulose, hemicelluloses and lignin was 6.7, 3.0 and 1.9 g/d, respectively. The results of denaturing gradient gel electrophoresis (DGGE) suggested that the dominant hydrolytic bacteria responsible for the biodegradation of the palm fiber and residual oil were Clostridium sp., while the dominant methanogens were Methanothermobacter sp.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 177, February 2015, Pages 17–27
نویسندگان
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