کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5012575 1462814 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparative study of single- and two-stage fermentation of the brown seaweed Laminaria digitata
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Comparative study of single- and two-stage fermentation of the brown seaweed Laminaria digitata
چکیده انگلیسی
This study compared single- and two-stage mesophilic fermentation of Laminaria digitata. The two-stage system comprised a hydrolysis reactor (H1) with a hydraulic retention time (HRT) of 4 days followed by two methanogenesis reactors M1 and M2 with HRT of 20 and 14 days respectively. The single-stage reactor (M3) had an HRT of 24 days. Specific methane yields of 176, 234 and 221 L/kg VS were obtained for M1, M2 and M3. The methane concentration of the biogas was 22% higher for the two-stage system (58-61%) than the single-stage system (50%). Hydrolysis yielded a hydrogen yield of 26 L/kg VS. The two-stage system (H1, M2) provided an overall energy yield of 8.66 MJ/kg at an HRT of 18 days compared to 7.89 MJ/kg in the single-stage system with an HRT of 24 days. Thus, the two-stage system reduced the HRT by 33% whilst improving the energy conversion by 9.8%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 148, 15 September 2017, Pages 405-412
نویسندگان
, , ,