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Ma X.,Soochow University of China | Li N.,Soochow University of China | Li N.,State Key Laboratory Treatm Recycling Organ Effluents Adsorption Petroleum Chemical Industrial | Jiang J.,Soochow University of China | And 9 more authors.
Journal of Environmental Chemical Engineering | Year: 2013

The high-concentrated phenolic water (∼10,000 mg/L) was directly treated by the Pseudomonas putida immobilized on the activated carbon fiber (ACF) via adsorption-synergic biodegradation. Compared with granular activated carbon and other adsorbents, ACF had a better adsorption and mechanical property as a fiber material. P. putida was immobilized onto ACF with a load amount of 183 mg/g after acclimatization and the cells-immobilized ACF performed the sequential adsorption-biodegradation process from the phenol concentration of 10,000-0 mg/L within 120 h directly at 30 C, pH = 7. The whole process based on the cells-immobilized ACF was investigated in detail. The adsorption process played a main role and phenol concentration could be decreased under 2000 mg/L in a short time. Absorption isotherm of ACF was found to be well fitted by Langmuir isotherm model, which indicated that the adsorption process was monolayer adsorption. And then, the biodegradation process started in the subsequent stage and completed the whole process under the synergy of release process. The special adsorption-release performance of ACF made it possible to deal with phenol wastewater (10,000 mg/L) directly under the biodegradation process with P. putida. In addition, the regeneration of ACF could be avoided and the biodegradation technique could be directly used in the treatment of high-concentrated phenol wastewater. © 2013 Elsevier Ltd All rights reserved. Source

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