کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
677931 | 888626 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen-methane production from swine manure: Effect of pretreatment and VFAs accumulation on gas yield
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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![عکس صفحه اول مقاله: Hydrogen-methane production from swine manure: Effect of pretreatment and VFAs accumulation on gas yield Hydrogen-methane production from swine manure: Effect of pretreatment and VFAs accumulation on gas yield](/preview/png/677931.png)
چکیده انگلیسی
A two-phase anaerobic process to produce hydrogen and methane from swine manure was investigated, using pretreated sludge with heat, acid and alkali treatment as inoculum. The relative order of pretreatment methods of H2 productivity effectiveness and CH4 productivity effectiveness produced by the residua of the first phase was heat treatment > alkali treatment > acid treatment. When the inoculum sludge was heat-treated at 80°C for 30 min, the H2 and CH4 production rate was the highest of 36.6, 201.7 ml (g TS)addedâ1. There were significant correlations between biogas production and accumulation of acetic acid and butyric acids. When propionic acid and total VFA concentrations reached about 2850 mg Lâ1 and 10.0 g Lâ1, respectively, the average H2 production rate and H2 content decreased from 7.6 ml dâ1(g VS)addedâ1 and 55.3% to 1.4 ml dâ1(g VS)addedâ1 and 43.2%, respectively. The activity of methanogenic bacteria was inhibited to a significant extent when the total VFA concentration was above 10.0 g Lâ1, but this inhibitory effect weakened when the VFA concentration fell to 6200-8500 mg Lâ1. Correspondingly, average CH4 production rate increased from 4.0 ml dâ1(g TS)addedâ1 to 12.5 ml dâ1(g TS)addedâ1. Propionic acid was degraded rapidly only when acetic and butyric acid concentrations dropped to 2500 mg Lâ1 and 1000 mg Lâ1, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 33, Issue 9, September 2009, Pages 1131-1138
Journal: Biomass and Bioenergy - Volume 33, Issue 9, September 2009, Pages 1131-1138
نویسندگان
Yuanyuan Wang, Yanlin Zhang, Liang Meng, Jianbo Wang, Wenqian Zhang,