Abstract:
:The biodegradation of Congo red dye was performed using polyurethane foam-polypropylene immobilized Bacillus sp. MH587030.1 in a moving bed biofilm reactor (MBBR). The central composite design (CCD) based response surface methodology (RSM) was used to optimize the process parameters; pH, Congo red concentration, and media filling ratio, and optimum conditions were observed to be 7.0, 50 mg/L, and 45%, respectively in batch MBBR. At optimum condition, MBBR was operated in continuous mode at different flow rates (25-100 mL/h) over a period of 564 h. The maximum removal efficiency (RE) and elimination capacity (EC) were obtained as 95.7% and 57.6 mg/L·day, respectively under steady-state. The kinetics of Congo red biodegradation at various flow rates were evaluated by a modified Stover-Kincannon model, and kinetic constants; KB and Umax were found to be 0.253 g/L·day and 0.263 g/L·day, respectively.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Sonwani RK,Swain G,Giri BS,Singh RS,Rai BNdoi
10.1016/j.biortech.2020.122811subject
Has Abstractpub_date
2020-04-01 00:00:00pages
122811eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30080-8journal_volume
302pub_type
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