Pyridine influence on a sequential anaerobic-anoxic-aerobic FMBR system for phenol, thiocyanate and ammonia removal

A synthetic wastewater containing various pyridine concentrations (25-250 mg/L) was treated in a sequential anaerobic(B1)-anoxic(B2)-aerobic(B3) fed batch moving bed reactor (FMBR) system. Pyridine was associated with phenol (1500 mg/L), SCN- (800 mg/L), chemical oxygen demand (COD) (5400-5430 mg/L)...

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Veröffentlicht in:Environmental technology. - 1998. - 39(2018), 14 vom: 07. Juli, Seite 1786-1794
1. Verfasser: Sahariah, Biju Prava (VerfasserIn)
Weitere Verfasser: Anandkumar, J, Chakraborty, Saswati
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Fed batch moving bed reactor denitrification nitrification phenol pyridine thiocyanate Pyridines Thiocyanates Water Pollutants, Chemical mehr... Phenol 339NCG44TV Ammonia 7664-41-7
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520 |a A synthetic wastewater containing various pyridine concentrations (25-250 mg/L) was treated in a sequential anaerobic(B1)-anoxic(B2)-aerobic(B3) fed batch moving bed reactor (FMBR) system. Pyridine was associated with phenol (1500 mg/L), SCN- (800 mg/L), chemical oxygen demand (COD) (5400-5430 mg/L) and NH4+-N (500 mg/L) at hydraulic retention time (HRT) of 6 (B1: 3 days; B2 and B3: 1.5 days each) days. In B1, pyridine removal was 10-12% from influent concentration of 25-100 mg/L and beyond that, it was zero. Removal of phenol (53-39%) and COD (33-22%) occurred in B1, but pyridine above 50 mg/L inhibited both. In B2, 68-90% of pyridine removal occurred along with phenol (>98%), COD (>67%), SCN- (>85%) removal and denitrification. In B2, with an increase in pyridine loading removal rate of phenol, COD and nitrate increased, whereas SCN- removal decreased beyond pyridine loading of 0.031g/L day. In B3, nitrification decreased with high generation of free ammonia. Pyridine degradation in B1, B2 and B3 follows the Stover-Kincannon model with a maximum substrate removal rate of 111.1, 333.3 and 23.81 g/L day, respectively. Thiocyanate removal in B2 and ammonia removal in B3 follows the Bhatia inhibition model with a maximum substrate removal rate of 0.641 and 0.528/day, respectively. The overall efficiency of the FMBR system remained unaffected up to 250 mg pyridine/L at 6 days HRT 
650 4 |a Journal Article 
650 4 |a Fed batch moving bed reactor 
650 4 |a denitrification 
650 4 |a nitrification 
650 4 |a phenol 
650 4 |a pyridine 
650 4 |a thiocyanate 
650 7 |a Pyridines  |2 NLM 
650 7 |a Thiocyanates  |2 NLM 
650 7 |a Water Pollutants, Chemical  |2 NLM 
650 7 |a Phenol  |2 NLM 
650 7 |a 339NCG44TV  |2 NLM 
650 7 |a Ammonia  |2 NLM 
650 7 |a 7664-41-7  |2 NLM 
700 1 |a Anandkumar, J  |e verfasserin  |4 aut 
700 1 |a Chakraborty, Saswati  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Environmental technology  |d 1998  |g 39(2018), 14 vom: 07. Juli, Seite 1786-1794  |w (DE-627)NLM098202545  |x 1479-487X  |7 nnns 
773 1 8 |g volume:39  |g year:2018  |g number:14  |g day:07  |g month:07  |g pages:1786-1794 
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