PMID: 16646480May 2, 2006Paper

Biodegradation of p-nitrophenol by aerobic granules in a sequencing batch reactor

Environmental Science & Technology
Shan YiJoo-Hwa Tay

Abstract

In this study, aerobic granules to treat wastewater containing p-nitrophenol (PNP) were successfully developed in a sequencing batch reactor (SBR) using activated sludge as inoculum. A key step was the conditioning of the activated sludge seed to enrich for biomass with improved settleability and higher PNP degradation activity by implementing progressive decreases in settling time and stepwise increases in PNP concentration. The aerobic granules were cultivated at a PNP loading rate of 0.6 kg/ m3 x day, with glucose to boost the growth of PNP-degrading biomass. The granules had a clearly defined shape and appearance, settled significantly faster than activated sludge, and were capable of nearly complete PNP removal. The granules had specific PNP degradation rates that increased with PNP concentration from 0 to 40.1 mg of PNP/L, peaked at 19.3 mg of PNP/(g of VSS) x h (VSS = volatile suspended solids), and declined with further increases in PNP concentration as substrate inhibition effects became significant. Batch incubation experiments show that the PNP-degrading granules could also degrade other phenolic compounds, such as hydroquinone, p-nitrocatechol, phenol, 2,4-dichlorophenol, and 2,6-dichlorophenol. The PNP-degrading gr...Continue Reading

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Citations

Jan 10, 2008·Applied Microbiology and Biotechnology·L L ZhangF Fang
Sep 21, 2010·Applied Microbiology and Biotechnology·Duu-Jong LeeYu-You Chen
Nov 28, 2009·Journal of Industrial Microbiology & Biotechnology·He-Long JiangJoo-Hwa Tay
Dec 30, 2011·Applied Biochemistry and Biotechnology·Venkata Nancharaiah YarlagaddaVenugopalan Vayalam Purath
Feb 22, 2012·Applied Biochemistry and Biotechnology·E SujaVayalam P Venugopalan
Jan 1, 2012·Journal of Environmental Sciences (China)·Farrukh Basheer, I H Farooqi
Jun 23, 2012·Environmental Technology·Lili LiuWeimin Cai
Dec 18, 2012·Environmental Technology·F Basheer, I H Farooqi
Jul 21, 2014·Applied Microbiology and Biotechnology·Xia ZhaoHao Xu
Dec 29, 2012·Journal of Hazardous Materials·Yanrong ZhangSachio Yoshihara
Oct 3, 2012·Journal of Biotechnology·Yi Zhang, Joo Hwa Tay
Apr 7, 2011·Journal of Hazardous Materials·Mohammad Zain KhanSuhail Sabir
Oct 3, 2009·Journal of Hazardous Materials·Sunil S AdavJuin-Yih Lai
Aug 4, 2009·Water Research·Ting-Ting RenHan-Qing Yu
Jun 30, 2009·Water Research·Mariángel Martín-HernándezMaría Eugenia Suárez-Ojeda
Jun 25, 2008·Biotechnology Advances·Sunil S AdavJoo-Hwa Tay
Apr 30, 2008·Bioresource Technology·Xinhua WangMingming Gao
Feb 29, 2008·Biotechnology and Bioengineering·Bing-Jie Ni, Han-Qing Yu
Jul 3, 2013·Journal of Hazardous Materials·Isaac FernándezJulián Carrera
Mar 12, 2008·Bioresource Technology·Yong LiHailou Xu
Jan 21, 2011·Journal of Hazardous Materials·Julián CarreraJulio Pérez

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