4-nitrophenol biodegradation in a sequencing batch reactor: kinetic study and effect of filling time

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• 作者：Tomei ; M. Concetta ; Annesini ; M. Cristina ; Bussoletti ; S.
• 关键词：4-nitrophenol biodegradation ; SBR reactor ; Haldane kinetics ; Xenobiotic removal ; Filling time
• 刊名：Water Research
• 出版年：2004
• 出版时间：January, 2004
• 年：2004
• 卷：38
• 期：2
• 页码：375-384
• 全文大小：296 K

文摘

Biodegradation kinetics of 4-nitrophenol (4NP) was investigated in a lab-scale sequencing batch reactor fed with the compound as the sole carbon source. The experimental results showed that complete 4NP removal can be easily achieved with acclimatized biomass, even if an inhibition kinetics is observed; furthermore, an improvement in the removal kinetics is obtained if the substrate concentration peak, reached in the reactor at the end of the filling time, is maintained to quite a low value. Both long feed phase and high biomass concentration are effective in reducing the substrate concentration peak and then improving the process efficiency.