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童婧, 杨朝晖, 曾光明, 熊炜平, 黄兢, 徐海音, 宋佩佩. 锆、铁氧化物改性活性炭纤维的制备及其除磷性能[J]. 环境工程学报, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
引用本文: 童婧, 杨朝晖, 曾光明, 熊炜平, 黄兢, 徐海音, 宋佩佩. 锆、铁氧化物改性活性炭纤维的制备及其除磷性能[J]. 环境工程学报, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
shu
Tong Jing, Yang Zhaohui, Zeng Guangming, Xiong Weiping, Huang Jing, Xu Haiyin, Song Peipei. Preparation of hydroxyl-iron-zirconium modified activated carbon fieber and its phosphate removal performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
Citation: Tong Jing, Yang Zhaohui, Zeng Guangming, Xiong Weiping, Huang Jing, Xu Haiyin, Song Peipei. Preparation of hydroxyl-iron-zirconium modified activated carbon fieber and its phosphate removal performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
shu

锆、铁氧化物改性活性炭纤维的制备及其除磷性能

  • 1.

    湖南大学环境科学与工程学院, 长沙 410082

  • 2.

    环境生物与控制教育部重点实验室(湖南大学), 长沙 410082

  • 基金项目:

    国家自然科学基金资助项目(51378189)

  • 中图分类号: X524

Preparation of hydroxyl-iron-zirconium modified activated carbon fieber and its phosphate removal performance

  • 1.

    College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

  • 2.

    Key Laboratory of Environmental Biology and Pollution Control(Hunan University), Ministry of Education, Changsha 410082, China

  • Fund Project:

摘要

  • 摘要: 利用锆、铁氧化物对活性炭纤维进行改性,制备了一种新型高效除磷吸附剂——负载锆铁氧化物的活性炭纤维(ACF-ZrFe)。综合运用单因素实验与正交实验对吸附剂的制备条件进行优化,同时利用环境扫描电镜和傅里叶变换红外光谱分析对吸附剂表面性质及反应机理进行了探究。实验结果表明,ACF-ZrFe制备的最佳条件为:锆铁摩尔比7:3,浸渍液中锆铁总浓度0.1 mol/L,超声处理时间10 min。当pH为4时,ACF-ZrFe对磷的吸附效果最显著。NO3-、SO42-、F-和Cl-等共存阴离子对磷吸附有一定抑制作用,其作用强弱顺序为:F- > NO3- > Cl- > SO42-。Langmuir等温吸附模型很好地描述了ACF-ZrFe对水中磷的等温吸附行为,最大吸附量为27.03 mg/g,吸附动力学满足准二级动力学模型,表明化学吸附是该反应的主要限速步骤。红外光谱分析及pH影响实验表明,ACF-ZrFe吸附磷的主要机理为阴离子配位体交换和静电吸附。
    Abstract: In this study, a novel adsorbent for the removal of phosphate (P) from aqueous solution was synthesized by modifying activated carbon fibers with zirconium oxide and iron oxide (ACF-ZrFe). Both single factor and orthogonal experiments were designed for the optimizing the preparation conditions. The adsorbent was characterized by environment scanning electron microscopy and Fourier transform infrared spectroscopy. The results demonstrated that the optimum preparation conditions were n(Zr)/n(Fe) ratio of 7:3, total concentration of 0.1 mol/L, and ultrasonic time of 10 min. P adsorption was highly pH-dependent and the optimum pH was found to be 4.0. The adsorption isotherm was well described by the Langmuir model, and the maximum P adsorption capacity was estimated to be 27.03 mg/g. The kinetics data were well fitted to the pseudo-second-order equation, which indicated that chemical sorption was the rate-limiting step in the adsorption mechanism. Moreover, co-existing ions, including sulfate, chloride, nitrate, and fluoride, had a definite effect on the uptake of P with the order of influence being F- > NO3- > Cl- > SO42-. Fourier transform infrared spectroscopy and change in pH associated with the adsorption process revealed that ligand exchange and electrostatic interactions were the main mechanisms of P adsorption onto ACF-ZrFe.
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  • 收稿日期:  2015-05-14
  • 刊出日期:  2016-06-03
童婧, 杨朝晖, 曾光明, 熊炜平, 黄兢, 徐海音, 宋佩佩. 锆、铁氧化物改性活性炭纤维的制备及其除磷性能[J]. 环境工程学报, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
引用本文: 童婧, 杨朝晖, 曾光明, 熊炜平, 黄兢, 徐海音, 宋佩佩. 锆、铁氧化物改性活性炭纤维的制备及其除磷性能[J]. 环境工程学报, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
shu
Tong Jing, Yang Zhaohui, Zeng Guangming, Xiong Weiping, Huang Jing, Xu Haiyin, Song Peipei. Preparation of hydroxyl-iron-zirconium modified activated carbon fieber and its phosphate removal performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
Citation: Tong Jing, Yang Zhaohui, Zeng Guangming, Xiong Weiping, Huang Jing, Xu Haiyin, Song Peipei. Preparation of hydroxyl-iron-zirconium modified activated carbon fieber and its phosphate removal performance[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2881-2888. doi: 10.12030/j.cjee.201501044
shu

锆、铁氧化物改性活性炭纤维的制备及其除磷性能

  • 1.  湖南大学环境科学与工程学院, 长沙 410082
  • 2.  环境生物与控制教育部重点实验室(湖南大学), 长沙 410082
  • 收稿日期:  2015-05-14
基金项目:

国家自然科学基金资助项目(51378189)

摘要: 利用锆、铁氧化物对活性炭纤维进行改性,制备了一种新型高效除磷吸附剂——负载锆铁氧化物的活性炭纤维(ACF-ZrFe)。综合运用单因素实验与正交实验对吸附剂的制备条件进行优化,同时利用环境扫描电镜和傅里叶变换红外光谱分析对吸附剂表面性质及反应机理进行了探究。实验结果表明,ACF-ZrFe制备的最佳条件为:锆铁摩尔比7:3,浸渍液中锆铁总浓度0.1 mol/L,超声处理时间10 min。当pH为4时,ACF-ZrFe对磷的吸附效果最显著。NO3-、SO42-、F-和Cl-等共存阴离子对磷吸附有一定抑制作用,其作用强弱顺序为:F- > NO3- > Cl- > SO42-。Langmuir等温吸附模型很好地描述了ACF-ZrFe对水中磷的等温吸附行为,最大吸附量为27.03 mg/g,吸附动力学满足准二级动力学模型,表明化学吸附是该反应的主要限速步骤。红外光谱分析及pH影响实验表明,ACF-ZrFe吸附磷的主要机理为阴离子配位体交换和静电吸附。

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