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- W2154358417 abstract "Abstract BACKGROUND Packed bed biofilm reactors ( PBBR ) are gaining interest for the bioremediation of wastewater contaminated with heavy metals. The study of both hydrodynamics and microbial growth kinetics are equally important for assessment of the overall bioremediation efficiency of a PBBR . RESULTS Hydrodynamics of a Bacillus cereus ( JUBT1 ) based biofilm reactor of diameter 45 mm and length 460 mm undergoing removal of Hg 2+ ions up to a conversion efficiency of 90% have been determined using both actual and Ca‐alginate based artificial biofilms. The Peclet numbers obtained using biotic and abiotic biofilms have been determined to be 9.74 and 8.8, respectively. The micrographs of the biofilm with the variation of aging period suggest its stability up to 150 days of operation. A mathematical model has been developed and validated incorporating both the dispersion parameter and microbial growth kinetics. CONCLUSION This work demonstrates that in order to carry out hydrodynamic studies of a PBBR , the use of abiotic films rather than biotic films is much more beneficial and time efficient as it does not require strict biochemical precautions. Moreover, using lower inlet concentrations of Hg 2+ ions, the exit conversion of the PBBR is found to be maximum. © 2012 Society of Chemical Industry" @default.
- W2154358417 created "2016-06-24" @default.
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- W2154358417 date "2013-01-24" @default.
- W2154358417 modified "2023-10-17" @default.
- W2154358417 title "Hydrodynamics of a packed bed biofilm reactor (PBBR) for the removal of Hg<sup>2+</sup>ion - RTD experiments with biotic and characteristically similar abiotic films and axial dispersion model" @default.
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- W2154358417 doi "https://doi.org/10.1002/jctb.4008" @default.
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