کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4996641 1368272 2018 8 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Effect of sludge features and extraction-esterification technology on the synthesis of biodiesel from secondary wastewater treatment sludges
ترجمه فارسی عنوان
تأثیر ویژگی های لجن و تکنولوژی استخراج-استرازی بر سنتز بیودیزل از لجن فاضلاب ثانوی
کلمات کلیدی
مایع استخراج مایع؛ جامد مایع استخراج؛ ترشح شدن در محل؛ نسل دوم سوخت های زیستی؛ عصاره آبیاری لجن؛
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- Different technologies for FAME obtention from secondary sludge were compared.
- In situ extraction and transesterification provide the best results.
- Ultra-sonication improves biodiesel yields.
- In situ transesterification is controlled by mass transfer.

Secondary sludge from municipal wastewater treatment plant is proposed as a promising alternative lipid feedstock for biodiesel production. A deep study combining different type of raw materials (sludge coming from the oxic, anoxic and anaerobic steps of the biological treatment) with different technologies (liquid-liquid and solid-liquid extractions followed by acid catalysed transesterification and in situ extraction-transesterification procedure) allows a complete comparison of available technologies. Different parameters - contact time, catalyst concentration, pretreatments - were considered, obtaining more than 17% FAMEs yield after 50 min of sonication with the in situ procedure and 5% of H2SO4. This result corresponds to an increment of more than 65% respect to the best results reported at typical conditions. Experimental data were used to propose a mathematical model for this process, demonstrating that the mass transfer of lipids from the sludge to the liquid is the limiting step.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 247, January 2018, Pages 209-216
نویسندگان
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