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Fe3O4-TiO2Al吸附剂去除水中氟离子

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蒋步青, 李继香, 邱长泉, 何淑英, 康长安, 轩军旗, 潘文灏. Fe3O4-TiO2Al吸附剂去除水中氟离子[J]. 环境工程学报, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
引用本文: 蒋步青, 李继香, 邱长泉, 何淑英, 康长安, 轩军旗, 潘文灏. Fe3O4-TiO2Al吸附剂去除水中氟离子[J]. 环境工程学报, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
shu
Jiang Buqing, Li Jixiang, Qiu Changquan, He Shuying, Kang Changan, Xuan Junqi, Pan Wenhao. Removal of fluoride ions from wastewaters by sorbent Fe3O4-TiO2·nH2O·Al[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
Citation: Jiang Buqing, Li Jixiang, Qiu Changquan, He Shuying, Kang Changan, Xuan Junqi, Pan Wenhao. Removal of fluoride ions from wastewaters by sorbent Fe3O4-TiO2·nH2O·Al[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
shu

Fe3O4-TiO2Al吸附剂去除水中氟离子

  • 1.

    上海大学环境与化学工程学院, 上海 200444

  • 2.

    中国科学院上海高等研究院, 上海 201210

  • 3.

    上海市节能减排中心, 上海 200003

  • 4.

    江西省环境监测中心站, 南昌 330077

  • 5.

    中建国际投资(西安)有限公司, 西安 710000

  • 基金项目:

    国家自然科学基金资助项目(51408588)

    上海市人才发展资金资助项目(2012064)

    浦东新区科技发展基金(PKJ2014-C12)

  • 中图分类号: X703

Removal of fluoride ions from wastewaters by sorbent Fe3O4-TiO2·nH2O·Al

  • 1.

    School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China

  • 2.

    Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai 201210, China

  • 3.

    Shanghai Center for Energy-Saving and Emission-Reduction, Shanghai 200003, China

  • 4.

    Jiangxi Provincial Center for Envioronment Monitoring, Nanchang 330077, China

  • 5.

    China State Construction International Investments (Xi'an) Limited, Xi'an 710000, China

  • Fund Project:

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  • 摘要: 以实验室制备的Fe3O4-TiO2·nH2O·Al吸附剂处理模拟和实际含氟废水,探讨了吸附剂用量、体系pH、吸附温度和吸附时间等因素对F-吸附效果的影响。结果表明:在初始F-浓度16.1 mg/L,起始pH 8.0,吸附剂投加量5 g/L,室温(约25 ℃)下吸附15 min时,模拟和实际废水的出水F-均可达到3O4-TiO2·nH2O·Al具有一定的实际应用价值。含氟水溶液初始pH对Fe3O4-TiO2·nH2O·Al吸附F-性能影响较大。在pH 介于3.0~5.0 时,吸附容量较大,过高或过低都会导致吸附容量降低。Fe3O4-TiO2·nH2O·Al吸附F-的过程为放热反应,升温不利于F-的吸附。该吸附剂吸附F- 的过程为化学吸附,符合准二级动力学模型,等温线拟合接近Freundlich吸附等温线。
    Abstract: An adsorbent of Fe3O4-TiO2·nH2O·Al synthesized in the lab was applied for water defluoridation with simulated and practical fluoride wastewater. The impacts of the experiment parameters, such as adsorbent dosage, pH value, adsorption temperature, and adsorption time on the defluoridation process were discussed. The results showed that: under pH 8.0, an initial fluoride concentration of 16.1 mg/L, an adsorbent of 5 g/L, and 15 min of adsorption at room temperature (about 25 ℃), the adsorption capacities of adsorbent were around 1.6 mg/g for the simulated and practical fluoride wastewater. The effluent fluorine (F-) concentration was lower than 10 mg/L, which can meet the integrated wastewater discharge standards and discharge standard of pollutants for electroplating. The results suggested that the adsorbent has a potential in fluoride wastewater treatment. The initial pH value had a great effect on defluoridation. The adsorption capacity could reach its highest value when the pH was between 3.0 and 5.0, but it decreased if the pH value was outside this range. The adsorption of F- by the adsorbent was an exothermic process. An elevated temperature was not beneficial to the adsorption. The defluoridation of the adsorbent was a chemical adsorption process, and it was consistent with the pseudo-second-order model and Freundlich isotherm.
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  • 收稿日期:  2015-03-13
  • 刊出日期:  2016-06-03
蒋步青, 李继香, 邱长泉, 何淑英, 康长安, 轩军旗, 潘文灏. Fe3O4-TiO2Al吸附剂去除水中氟离子[J]. 环境工程学报, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
引用本文: 蒋步青, 李继香, 邱长泉, 何淑英, 康长安, 轩军旗, 潘文灏. Fe3O4-TiO2Al吸附剂去除水中氟离子[J]. 环境工程学报, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
shu
Jiang Buqing, Li Jixiang, Qiu Changquan, He Shuying, Kang Changan, Xuan Junqi, Pan Wenhao. Removal of fluoride ions from wastewaters by sorbent Fe3O4-TiO2·nH2O·Al[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
Citation: Jiang Buqing, Li Jixiang, Qiu Changquan, He Shuying, Kang Changan, Xuan Junqi, Pan Wenhao. Removal of fluoride ions from wastewaters by sorbent Fe3O4-TiO2·nH2O·Al[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2259-2264. doi: 10.12030/j.cjee.201412221
shu

Fe3O4-TiO2Al吸附剂去除水中氟离子

  • 1.  上海大学环境与化学工程学院, 上海 200444
  • 2.  中国科学院上海高等研究院, 上海 201210
  • 3.  上海市节能减排中心, 上海 200003
  • 4.  江西省环境监测中心站, 南昌 330077
  • 5.  中建国际投资(西安)有限公司, 西安 710000
  • 收稿日期:  2015-03-13
基金项目:

国家自然科学基金资助项目(51408588)

上海市人才发展资金资助项目(2012064)

浦东新区科技发展基金(PKJ2014-C12)

摘要: 以实验室制备的Fe3O4-TiO2·nH2O·Al吸附剂处理模拟和实际含氟废水,探讨了吸附剂用量、体系pH、吸附温度和吸附时间等因素对F-吸附效果的影响。结果表明:在初始F-浓度16.1 mg/L,起始pH 8.0,吸附剂投加量5 g/L,室温(约25 ℃)下吸附15 min时,模拟和实际废水的出水F-均可达到3O4-TiO2·nH2O·Al具有一定的实际应用价值。含氟水溶液初始pH对Fe3O4-TiO2·nH2O·Al吸附F-性能影响较大。在pH 介于3.0~5.0 时,吸附容量较大,过高或过低都会导致吸附容量降低。Fe3O4-TiO2·nH2O·Al吸附F-的过程为放热反应,升温不利于F-的吸附。该吸附剂吸附F- 的过程为化学吸附,符合准二级动力学模型,等温线拟合接近Freundlich吸附等温线。

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