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Title: Trioctylphosphine oxide-impregnated hollow fiber membranes for removal of phenol from wastewater
Authors: Praveen, P.
Loh, K.-C. 
Keywords: Adsorption
Hollow fiber membranes
Two phase partitioning bioreactor
Issue Date: 5-Jun-2013
Citation: Praveen, P., Loh, K.-C. (2013-06-05). Trioctylphosphine oxide-impregnated hollow fiber membranes for removal of phenol from wastewater. Journal of Membrane Science 437 : 1-6. ScholarBank@NUS Repository.
Abstract: Trioctylphosphine oxide (TOPO) was immobilized in polypropylene hollow fiber membranes for removal of phenol from wastewater. Scanning electron microscopy showed white deposits of TOPO dispersed non-uniformly within the resulting extractant-impregnated hollow fiber membranes (EIHFM). The EIHFMs manifested high adsorption capacity and mass transfer rates, with adsorption equilibrium attained within 10-30. min of operation. Experimental equilibrium adsorption capacities with a feed of 1000. mg/L phenol were 32, 42, 52 and 57. mg/g at 50, 100, 200 and 400. g/L TOPO, respectively. During repeated operation with 1000. mg/L phenol, the adsorption capacities of the EIHFMs remained stable at 32.2±1.3 and 52.3±0.9. mg/g for 10 subsequent runs at TOPO concentrations of 50 and 100. g/L, respectively. The EIHFMs, when used as adsorbents in a two phase partitioning bioreactor, alleviated substrate inhibition on Pseudomonas putida by rapidly adsorbing phenol to sub-inhibitory levels. Biodegradation of 1000 and 2000. mg/L phenol was completed within 26 and 36. h, respectively. These results suggest that the EIHFM is a promising technology for solventless extraction of aromatic compounds in wastewater treatment. © 2013 Elsevier B.V.
Source Title: Journal of Membrane Science
ISSN: 03767388
DOI: 10.1016/j.memsci.2013.02.057
Appears in Collections:Staff Publications

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