03241nam a2200409 a 4500 20260817171427.0 .b11455068 AIT Thesis no. EV-95-35 Gheewala, Shabbir H. Biodegradation of aniline Bangkok : Asian Institute of Technology, 1995 55 leaves : ill. Thesis ; no. EV-95-35 Thesis (M. Eng.) - Asian Institute of Technology, 1995 A thesis submitted m partial fulfilment of the requirement for the degree of Master of Engineering. The biodegradability of aniline was tested using the conventional activated sludge process. Aniline was used as the sole carbon source for the mixed microbial community in the activated sludge. The concentrations of aniline were varied from 50 mg/L to 350 mg/Lin steps of 50 mg/L. The aerobic activated sludge unit was operated at ambient temperature and an HRT of 13.33 hours and an SRT of 12 days. Removal efficiencies of 95-100% were obtained even for aniline concentrations upto 350 mg/L with satisfactory subsequent nitrification. Ammonia oxidation rates of 1-4 mg/gML VSS/h were obtained. Batch tests were carried out to test the inhibitory effects of high concentrations of aniline on the microorganisms. The concentrations used in the three batch tests were upto 425 mg/L. The aniline degradation took place very quickly with nitrification picking up as soon as the aniline concentration dropped below about 3-4 mg/L. In the cases when initial concentration of aniline was 250 mg/L and above, complete nitrification did not take place even though the aniline concentration dropped rapidly. The toxicity effect of aniline on the nitrification process was modelled. The model showed that inhibitory effect of aniline was pronounced when aniline concentration exceeded 2 mg/L. Below this concentration, the inhibitory effect of aniline was insignificant. Sewage Purification Activated sludge process Annachhatre, Ajit P., Chairperson Umita, Teruyuki, Examination committee Yang, Byung-Soo, Examination committee Swedish International Development Authority, Scholarship donor Asian Institute of Technology. Thesis ; no. EV-95-35 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B15147 .b11455068 mnait v 240404 0 960213 m a v 0 mnait mnait mnarc 20 40 Barcode : 30050003353116 CREATED : 1994-09-16 RECORD # : i1171752x LPATRON : 1010167 LCHKIN : 1999-09-10 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050003353132 CREATED : 1994-09-16 RECORD # : i11717531 LPATRON : 1010167 LCHKIN : 2000-12-16 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 18 TOT RENEW : 9 Barcode : 30050160079108 CREATED : 2016-05-23 RECORD # : i12985466 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 12181 12181 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. EV-95-35 30050003353116 2026-08-17 17:14:27 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. EV-95-35 30050003353132 2026-08-17 17:14:27 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. EV-95-35 30050160079108 2026-08-17 17:14:27 2026-08-17 40