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

How to Cite

Sylvia See, Poh-Eng Lim, Jun-Wei Lim, Chye-Eng Seng, & Rohana Adnan. (2015). Evaluation of o-cresol removal using PVA-cryogel-immobilised biomass enhanced by PAC. Water SA, 41(1 January). https://doi.org/10.4314/wsa.v41i1.8

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

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