کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9759205 | 1497699 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Semi-continuous solid substrate anaerobic reactors for H2 production from organic waste: Mesophilic versus thermophilic regime
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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![عکس صفحه اول مقاله: Semi-continuous solid substrate anaerobic reactors for H2 production from organic waste: Mesophilic versus thermophilic regime Semi-continuous solid substrate anaerobic reactors for H2 production from organic waste: Mesophilic versus thermophilic regime](/preview/png/9759205.png)
چکیده انگلیسی
We evaluated the influence of the operation temperature (mesophilic vs. thermophilic regime) of semicontinuous, acidogenic solid substrate anaerobic digestion (A-SSAD) of the organic fraction of municipal solid waste (OFMSW) at lab scale. The H2 percentage was higher in the thermophilic regime than in the mesophilic operation (58% and 42%, respectively). The H2 yield of thermophilic A-SSAD was significantly higher than in our mesophilic reactors (360 vs. 165 NmL H2/g VSrem) and other studies reported in the literature (range of 62-180 mL/g VS). Mesophilic A-SSAD showed a yield of 37% of the maximum yield based on 4 mol H2/mol hexose, while thermophilic A-SSAD exhibited a yield of 80% of the maximum yield. This result is similar to works with pure cultures of extremophile microorganisms where H2 yields of 83% of the maximum were reported. We found higher concentrations of acetic acid in the digestates of thermophilic A-SSAD, while butyrate was in higher proportion in mesophilic A-SSAD spent solids. The moderate-to-high yields obtained with the semicontinuous process used in this work are in disagreement with previous reports claiming that batch and semicontinuous processes are less efficient than continuous ones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 30, Issues 13â14, OctoberâNovember 2005, Pages 1383-1391
Journal: International Journal of Hydrogen Energy - Volume 30, Issues 13â14, OctoberâNovember 2005, Pages 1383-1391
نویسندگان
Idania Valdez-Vazquez, Elvira RÃos-Leal, Fernando Esparza-GarcÃa, Franco Cecchi, Héctor M. Poggi-Varaldo,