| TiO2@酵母复合微球固定床吸附荧光增白剂-VBL的研究 |
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| 引用本文： | 吴菲,张凯强,白波,王洪伦,索有瑞.TiO2@酵母复合微球固定床吸附荧光增白剂-VBL的研究[J].环境科学,2015,36(2):545-551. |
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| 作者姓名： | 吴菲 张凯强 白波 王洪伦 索有瑞 |
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| 作者单位： | 1. 长安大学环境科学与工程学院,西安,710054
2. 中国科学院西北高原生物研究所,西宁,810001 |
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| 基金项目： | 国家自然科学基金项目(21176031); 中央高校基本科研业务费专项(2013G2291015); 大学生创新创业训练计划项目(201410710059) |
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| 摘 要： | 研究了Ti O2@酵母复合微球在固定床中吸附阴离子型荧光增白剂-VBL(FWA-VBL)的特性,考察了溶液p H(2.0~8.0)、床层高度(1~3 cm)、进水浓度(20~80 mg·L-1)和进水流速(5~11 m L·min-1)等因素对固定床吸附特性的影响.结果表明在溶液p H为2.0,床层高度为1 cm,进水浓度为80 mg·L-1和进水流速为5 m L·min-1时,吸附剂的最大吸附量为223.80 mg·g-1.BDST、Thomas和Yoon-Nelson模型均能很好地描述不同条件下动态吸附行为,相关系数均大于0.980.同时,Ti O2@酵母复合微球具有很好的再生性能,可以重复利用4次.
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| 关 键 词： | TiO2@酵母 固定床 FWA-VBL 模型 再生 |
| 收稿时间： | 2014/8/26 0:00:00 |
| 修稿时间： | 2014/10/8 0:00:00 |
Adsorption of the TiO2@Yeast Composite Microspheres for Adsorbing Fluorescent Whitening Agent-VBL in Fixed Bed |
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| WU Fei,ZHANG Kai-qiang,BAI Bo,WANG Hong-lun and SUO You-rui.Adsorption of the TiO2@Yeast Composite Microspheres for Adsorbing Fluorescent Whitening Agent-VBL in Fixed Bed[J].Chinese Journal of Environmental Science,2015,36(2):545-551. |
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| Authors: | WU Fei ZHANG Kai-qiang BAI Bo WANG Hong-lun and SUO You-rui |
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| Institution: | College of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China;College of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China;Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810001, China;Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810001, China;Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810001, China |
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| Abstract: | In this work, the adsorption potential of TiO2@yeast composite microspheres to remove Fluorescent Whitening Agent-VBL (FWA-VBL) from aqueous solution was investigated using fixed-bed adsorption column. The effects of pH(2.0-8.0), bed height (1-3 cm), inlet concentration (20-80 mg·L-1) and feed flow rate (5-11 mL·min-1) on the breakthrough characteristics of the adsorption system were determined. The results showed that the highest bed capacity of 223.80 mg·g-1 was obtained under the condition of pH 2.0, 80 mg·L-1 inlet dye concentration, 1.0 cm bed height and 5 mL·min-1 flow rate. The adsorption data were fitted to three well-established fixed-bed adsorption models, namely, BDST model, Thomas model and Yoon-Nelson model. The results fitted well to the three models with coefficients of correlation R2>0.980 in different conditions. The TiO2@yeast composite microspheres have desired regeneration ability and could be reused for four times. |
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| Keywords: | TiO2@yeast fixed bed FWA-VBL models regeneration |
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