کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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681638 | 1460034 | 2012 | 5 صفحه PDF | دانلود رایگان |
Combined pretreatment of heat treatment with alkaline condition was applied to the sewage sludge in order to acquire the effective method for sludge solubilization and bio-hydrogen production. Solubilization ratio of the sludge with heat treatment at alkaline condition (pH 13) was as high as 85.0%, resulting in an increase of COD concentration in aqueous solution, but the ratio of sludge with heat treatment or alkaline treatment alone was 32.2% and 56.3%, respectively. During the fermentation of the pretreated sludge, a significant increase of hydrogen production was observed with a low strength of ammonia, showing that ammonia in the aqueous phase could inhibit bio-hydrogen production. Klebsiella, Enterobacter or Clostridium genus were mostly related on the hydrogen production.
► We evaluated the hydrogen production from the sewage sludge fermentation.
► A pretreatment of heat with alkaline condition enhanced the solubilization of sludge.
► A low strength of ammonia in the sludge led to an increase of hydrogen production.
► The role of ammonia on hydrogen production was proved by biological analysis.
Journal: Bioresource Technology - Volume 109, April 2012, Pages 239–243