Adsorption–synergic biodegradation of high-concentrated phenolic water by Pseudomonas putida immobilized on activated carbon fiber
Adsorption–synergic biodegradation of high-concentrated phenolic water by Pseudomonas putida immobilized on activated carbon fiber
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DOI：
10.1016/j.jece.2013.06.014
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发表时间：
2013-09
影响因子：
7.7
通讯作者：
Xiaoshuang Ma;Najun Li;Jiang Jun;Qingfeng Xu;Hua Li;Li-hua Wang;Jian‐mei Lu
中科院分区：
文献类型：
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作者：
Xiaoshuang Ma;Najun Li;Jiang Jun;Qingfeng Xu;Hua Li;Li-hua Wang;Jian‐mei Lu
采用吸附-协同生物降解法，将恶臭假单胞菌固定在活性炭纤维（ACF）上，直接处理高浓度含酚水（> 10，000 mg/L）。与颗粒活性炭等吸附剂相比，ACF作为纤维材料具有更好的吸附性能和力学性能，驯化后负载量为183 mg/g的ACF固定化恶臭假单胞菌，在30 °C、pH = 7、120 h内，直接对苯酚浓度为10，000 ~ 0 mg/L的废水进行连续吸附-降解。对固定化细胞ACF的整个过程进行了详细的研究。吸附过程起主要作用，在较短时间内可将苯酚浓度降至2000 mg/L以下。吸附等温线符合Langmuir吸附等温线模型，表明ACF对水的吸附过程为单分子层吸附。生物降解过程在后续阶段启动，并在释放过程的协同作用下完成整个过程。活性炭纤维特殊的吸附-释放性能使其在P. putida。此外，该生物降解技术可直接用于高浓度含酚废水的处理。
The high-concentrated phenolic water (∼10,000 mg/L) was directly treated by thePseudomonas putidaimmobilized 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. putidawas 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 withP. 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.