Biodegradation of p-cresol by aerobic granules in sequencing batch reactor

被引：26

作者：

Basheer, Farrukh ^{[1
]}

Farooqi, I. H. ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Dept Civil Engn, Environm Engn Sect, Aligarh 202002, Uttar Pradesh, India

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2012年 / 24卷 / 11期

关键词：

aerobic granules; p-cresol; sequencing batch reactor (SBR); haldane kinetics equation; EXTRACELLULAR POLYMERIC SUBSTANCES; TECHNOLOGY; KINETICS; PHENOL;

D O I：

10.1016/S1001-0742(11)60988-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The cultivation of aerobic granules in sequencing batch reactor for the biodegradation of p-cresol was studied. The reactor was started with 100 mg/L of p-cresol. Aerobic granules first appeared within one month of start up. The granules were large and strong and had a compact structure. The diameter of stable granules was in the range of 1-5 mm. The integrity coefficient and granules density was found to be 96% and 1046 kg/m(3), respectively. The settling velocity of granules was found to be in the range of 2x10(-2)-6x10(-2) m/sec. The aerobic granules were able to degrade p-cresol upto 800 mg/L at a removal efficiency of 88%. Specific p-cresol degradation rate in aerobic granules followed Haldane model for substrate inhibition. High specific p-cresol degradation rate up to 0.96 g p-cresol/(g VSS.day) were sustained upto p-cresol concentration of 400 mg/L. Higher removal efficiency, good settling characteristics of aerobic granules, makes sequencing batch reactor suitable for enhancing the microorganism potential for biodegradation of inhibitory compounds.

引用

页码：2012 / 2018

页数：7

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