Effective decolorization of anthraquinone dye reactive blue 19 using immobilized Bacillus sp. JF4 isolated by resuscitation-promoting factor strategy.
作者： Jiafang Cai , Jiale Liu , Aodong Pan , Jinfu Liu , Yuyang Wang
DOI: 10.2166/WST.2020.201
关键词:
摘要: Given the highly complex recalcitrant nature of synthetic dyes, biological treatment textile wastewater using efficient bacterial species is still considered as an environmentally friendly manner. In this study, a reactive blue 19 (RB19)-degrading strain, Bacillus sp. JF4, which was isolated by resuscitation-promoting factor (Rpf) strategy, immobilized into polyvinyl alcohol-calcium alginate-activated carbon beads (JF4-immobilized beads) for RB19 decolorization. Results suggest that JF4-immobilized beads, were capable simultaneous adsorption and biodegradation, showed high decolorization activity, while they exhibited better tolerability towards concentrations. The could almost completely decolorize 100 mg/L within 10 d, only 92.1% decolorized free bacteria 12 d. Further investigation on equilibrium kinetics process suggests pseudo-second-order model best fit data, Freundlich isotherm most suitable description data. Notably, repeated batch cycles indicated complete can be maintained at least three without much reduction in efficiency. These findings immobilizing Rpf-resuscitated strain effective strategy treatment.
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