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Anaerobic digestion of waste activated sludge usually requires pretreatment procedure to improve the bioavailability of sludge, which involves considerable energy and high expenditures. This study proposes a cost-effective method for enhanced anaerobic digestion of sludge without a pretreatment by directly adding iron into the digester. The results showed that addition of Fe 0 powder could...
Anaerobic digestion is promising technology to recover energy from waste activated sludge. However, the sludge digestion is limited by its low efficiency of hydrolysis–acidification. Zero valent iron (ZVI) as a reducing material is expected to enhance anaerobic process including the hydrolysis–acidification process. Considering that, ZVI was added into an anaerobic sludge digestion system to accelerate...
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