Evaluation of O-Cresol removal using Pva-Cryogel-Immobilised biomass enhanced by pac

• Main Authors: See, S., Lim, P.E., Lim, J.W., Seng, C.E., Adnan, R.
• Format: Non-Indexed Article
• Published: African Water Research Commission 2015
• Online Access: http://discol.umk.edu.my/id/eprint/8273/; http://www.ajol.info/index.php/wsa/article/view/112098

Evaluation of o-cresol removal using PVA-cryogel-immobilised biomass enhanced by PAC S See, P Lim, J Lim, C Seng, R Adnan 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.