Abstract
The performance of polyvinyl alcohol (PVA)–alginate immobilized biomass in the biodegradation of o-cresol was evaluated and compared with that of the suspended biomass. The effects of initial o-cresol concentration, initial pH, and immobilized biomass bead size on the biodegradation of o-cresol were investigated. Compared with the o-cresol biodegradation rate by suspended biomass, the biodegradation rate by immobilized biomass was barely affected at higher initial o-cresol concentration and extreme pH conditions suggesting that the immobilized biomass was protected by the PVA–alginate matrix. The reusability of the immobilized biomass beads up to three cycles of use could be achieved, but only at relatively lower initial o-cresol concentration.
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