Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/37576
Title: Development of Hollow Fiber Membrane Bioreactors for Two-Phase Biodegradation of Phenol
Authors: PRASHANT PRAVEEN
Keywords: Biodegradation, Hollow fiber membrane bioreactors, Phenol degradation, Solvent extraction, Substrate inhibition, Two phase partitioning bioreactors
Issue Date: 27-Sep-2012
Source: PRASHANT PRAVEEN (2012-09-27). Development of Hollow Fiber Membrane Bioreactors for Two-Phase Biodegradation of Phenol. ScholarBank@NUS Repository.
Abstract: Two-phase partitioning bioreactors (TPPB) can effectively mitigate substrate inhibition during biodegradation of phenol and achieve high biodegradation rates, but a plethora of operating challenges limit the applicability of these bioreactors. In this research, novel hollow fiber membrane bioreactors were developed to alleviate the limitations of conventional TPPBs: non-dispersive hollow fiber membrane bioreactor (HFMB); semi-dispersive hollow fiber supported liquid membrane bioreactor, and; solvent-free extractant impregnated hollow fiber membrane bioreactor. A kinetics model based on steady state mass transfer and Haldane growth kinetics was formulated to examine phenol biodegradation in the HFMB. Biofilms were identified as an ineluctable challenge and a strategy was formulated to remove biofilms and sustain biodegradation during long-term operation. The results indicate that these bioreactors, commingling the advantages of solvent extraction, biodegradation and hollow fiber membrane separation, can provide a more effective, economical and sustainable alternative to conventional bioreactors for biodegradation of aromatic compounds.
URI: http://scholarbank.nus.edu.sg/handle/10635/37576
Appears in Collections:Ph.D Theses (Open)

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