Effect of free nitrous acid pre-treatment on primary sludge at low exposure times

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• 作者：S. Zahedi^a ; ^{szahedi@icra.cat} ; P. Icaran^b ; ^{PIcaranL@fcc.es} ; Z. Yuan^c ; ^{Zhiguo@awmc.uq.edu.au} ; M. Pijuan^a ; ^{mpijuan@icra.cat}
• 关键词：Anaerobic digestion ; Free-nitrous acid pre-treatment ; Methane production ; Primary sludge ; Sludge biodegradability
• 刊名：Bioresource Technology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：228
• 期：Complete
• 页码：272-278
• 全文大小：496 K
• 卷排序：228

文摘

pH control is not necessary during FNA pre-treatment on primary sludge (PS). FNA increases the solubility and reduces cell viability (<20%). At 1 h, FNA (with 650 mg N-NO2−) provided the highest methane production (MP). Similar enhancement on MP were obtained while subjecting the PS at mild at 2–5 h. FNA is not necessary to increase MP; mild agitations also improve MP (around 14–17%).