کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10395589 | 888981 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sulfate reduction during the acidification of sucrose at pH 5 under thermophilic (55 °C) conditions. II: Effect of sulfide and COD/SO42- ratio
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
This work studied the effect of the sulfide concentration and COD/SO42- ratios (4 and 1) on sulfate reduction and acidification in a thermophilic (55 °C) UASB reactor fed with sucrose (4 g COD (lreactor d)â1) operated at a reactor mixed liquor pH controlled at 5 for a period of 301 days. When implementing N2 stripping, sulfate reduction efficiencies up to 95%, corresponding to volumetric sulfate reduction rates of 0.87 and 4.2 g (lreactor d)â1 at the COD/SO42- ratios of 4 and 1, respectively, were achieved. Sulfide was toxic to sulfate reduction at a total dissolved sulfide concentration of 100 mg lâ1. Acidification was always complete and acetate was the only form of substrate in the effluent at a COD/SO42- ratio of 1. The sludge was well retained in the reactor and kept its granular shape throughout the reactor run.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 12, June 2010, Pages 4278-4284
Journal: Bioresource Technology - Volume 101, Issue 12, June 2010, Pages 4278-4284
نویسندگان
S.I.C. Lopes, M.I. Capela, P.N.L. Lens,