活性炭含量对PVA-SA固定化小球处理氯苯微污染废水的影响

doi:10.12052/gdutxb.160142

Abstract

Abstract:

By embedding activated carbon and Penicillium sp. with the combination of sodium alginate (SA) and polyvinyl alcohol (PVA) as embedding agents, the ingredients of compound gel balls were optimized, and the associated mechanical strength, environmental stability, mass transfer performance and chlorobenzene removal under different levels of activated carbon contents were also assessed. Experimental results showed that the optimal mix ratio of the three compounds for composite gel beads was w(PVA)∶w(SA)∶w(CaCl₂)=6%∶2%∶2%. The addition of activated carbon was showed to be able to enhance the mechanical strength of immobilized pellets and the maximum mechanical strength was observed at the addition of 1% activated carbon. The stability of PVA-SA balls under acidic condition was higher than that of alkaline condition and their stability was increased with the increase of activated carbon contents. The addition of activated carbon increased the removal ability of chlorobenzene under the conditions of 30 ℃, pH 6, chlorobenzene initial concentration of 30 mg/L. The removal percentage of chlorobenzene reached over 80% when activated carbon content was 1% or 1.5% at 72 h. In conclusion, the addition of 1% activated carbon in the immobilization PVA-SA balls of Penicillium sp. improved the overall performance of the embedded pellets, with significant increase in mechanical strength, environmental stability, mass transfer performance and removal efficiency of chlorobenzene in water.

Key words: micro-contamination, immobilization, PVA-SA, activated carbon, capability, chlorobenzene removal

CLC Number:

X703.1

Du Qing-ping, Chen Zhan-ming, Li Yan-xu, Li Le, Ling Jia-yin, Xu Yan-bin. Effects of Activated Carbon in Sodium Alginate and Polyvinylacohol Immobilization Pellets of Penicillium sp. on Chlorobenzene Removal[J].Journal of Guangdong University of Technology, 2017, 34(04): 22-26.

References 17

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Effects of Activated Carbon in Sodium Alginate and Polyvinylacohol Immobilization Pellets of Penicillium sp. on Chlorobenzene Removal

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