%V 65
%L scholars2964
%D 2012
%X Aerobic granules to treat wastewater containing o-nitrophenol were successfully developed in a sequencing batch reactor (SBR) using activated sludge as inoculum. Stable aerobic granules were obtained with a clearly defined shape and diameters ranging from 2 to 6 mm after 122 days of operation. The integrity coefficient (IC) and granules density was found to be 98 and 1,054 kg m -3 respectively. After development of aerobic granules, o-nitrophenols were successfully degraded to an efficiency of 78 at a concentration of 70 mg L -1. GC-MS study revealed that the biodegradation of o-nitrophenol occured via catechol via nitrobenzene pathway. Specific o-nitrophenol biodegradation rates followed the Haldane model and the associated kinetic parameters were found as follows: V max = 3.96 g o-nitrophenol g -1VSS -1d -1, K s = 198.12 mg L -1, and K i = 31.16 mg L -1. The aerobic granules proved to be a feasible and effective way to degrade o-nitrophenol containing wastewater. © IWA Publishing 2012.
%N 12
%R 10.2166/wst.2012.123
%T Biodegradation of o-nitrophenol by aerobic granules with glucose as co-substrate
%J Water Science and Technology
%A F. Basheer
%A M.H. Isa
%A I.H. Farooqi
%K Aerobic granules; GC-MS; Haldane model; O-nitrophenol; Sequencing batch reactors, Activated sludge process; Glucose; Granular materials; Microbiology; Phenols; Wastewater treatment, Biodegradation, 2 nitrophenol; catechol; glucose; nitrobenzene, activated sludge; biodegradation; bioreactor; gas chromatography; glucose; mass spectrometry; oxic conditions; phenol; substrate; waste treatment; wastewater, activated sludge; aerobic granule; article; biodegradation; cell granule; inoculation; kinetics; mass fragmentography; sequencing batch reactor; waste water management, Aerobiosis; Biomass; Bioreactors; Gas Chromatography-Mass Spectrometry; Glucose; Kinetics; Nitrophenols
%O cited By 12
%P 2132-2139