کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7079313 1459992 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fermentation pre-treatment of landfill leachate for enhanced electron recovery in a microbial electrolysis cell
ترجمه فارسی عنوان
پیش تصفیه فاضلاب محلول در دفع زباله های دفن زباله برای بهبود الکترون در سلول الکترولیز میکروبی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Pre-fermentation of poorly biodegradable landfill leachate (BOD5/COD ratio of 0.32) was evaluated for enhanced current density (j), Coulombic efficiency (CE), Coulombic recovery (CR), and removal of organics (BOD5 and COD) in a microbial electrolysis cell (MEC). During fermentation, the complex organic matter in the leachate was transformed to simple volatile fatty acids, particularly succinate and acetate in batch tests, but mostly acetate in semi-continuous fermentation. Carbohydrate had the highest degree of fermentation, followed by protein and lipids. j, CE, CR, and BOD5 removal were much greater for an MEC fed with fermented leachate (23 A/m3 or 16 mA/m2, 68%, 17.3%, and 83%, respectively) compared to raw leachate (2.5 A/m3 or 1.7 mA/m2, 56%, 2.1%, and 5.6%, respectively). All differences support the value of pre-fermentation before an MEC for stabilization of BOD5 and enhanced electron recovery as current when treating a recalcitrant wastewater like landfill leachate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 151, January 2014, Pages 151-158
نویسندگان
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