Evaluation of o-cresol removal using PVA-cryogel-immobilised biomass enhanced by PAC

Authors

  • Sylvia See School of Chemical Sciences, Universiti Sains Malaysia, Minden, 11800 Penang, Malaysia
  • Poh-Eng Lim School of Chemical Sciences, Universiti Sains Malaysia, Minden, 11800 Penang, Malaysia
  • Jun-Wei Lim Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli Campus, Locked Bag No. 100, 17600 Jeli, Kelantan, Malaysia
  • Chye-Eng Seng School of Chemical Sciences, Universiti Sains Malaysia, Minden, 11800 Penang, Malaysia
  • Rohana Adnan School of Chemical Sciences, Universiti Sains Malaysia, Minden, 11800 Penang, Malaysia

DOI:

https://doi.org/10.4314/wsa.v41i1.8

Keywords:

cryogel beads, hydrogel beads, o-cresol, immobilised biomass, powdered activated carbon

Abstract

The degradation of o-cresol using immobilised acclimated biomass in PVA-alginate hydrogel and cryogel beads was investigated. The results show that the PVA-hydrogel-immobilised biomass achieved better o-cresol removal efficiency than the PVA-cryogel-immobilised biomass. However, the cryogel beads showed better bead stability and reusability. Based on o-cresol removal, the optimum dry biomass density in the cryogel beads of 3–4 mm diameter was found to be 0.02 g∙cm-3. An enhancement in the performance of PVA-cryogel-immobilised biomass for o-cresol removal was observed when 0.5% (w/v) powdered activated carbon (PAC) was added into the polymeric matrix. In the reusability and stability test, the cryogel beads containing biomass augmented by PAC were able to sustain 9 cycles of use with a removal efficiency of over 82% per cycle, when treating 300 mg∙ℓ-1 of o-cresol, without much biomass leakage being detected.

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Published

2015-01-28

Issue

Vol. 41 No. 1 January (2015): Water SA

Section

Research paper

License

Copyright (c) 2022 Sylvia See, Poh-Eng Lim, Jun-Wei Lim, Chye-Eng Seng, Rohana Adnan

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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The content of this journal is licensed under a Creative Commons Attribution Licence.  Users are permitted to read, download, copy, distribute, print, search or link to the full texts of the articles in this journal under the terms of this Licence, without asking prior permission from the publisher or the author, provided the source is attributed. Copyright is retained by the authors.

How to Cite

Sylvia See (2015) “Evaluation of o-cresol removal using PVA-cryogel-immobilised biomass enhanced by PAC”, Water SA, 41(1 January). doi:10.4314/wsa.v41i1.8.