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非沥青粘结剂煤质活性炭处理微污染水

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郭彦江, 张永发, 李国强, 付亚利. 非沥青粘结剂煤质活性炭处理微污染水[J]. 环境工程学报, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
引用本文: 郭彦江, 张永发, 李国强, 付亚利. 非沥青粘结剂煤质活性炭处理微污染水[J]. 环境工程学报, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
shu
Guo Yanjiang, Zhang Yongfa, Li Guoqiang, Fu Yali. Treatment of micro-polluted water by non-pitch binder coal-based activated carbon[J]. Chinese Journal of Environmental Engineering, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
Citation: Guo Yanjiang, Zhang Yongfa, Li Guoqiang, Fu Yali. Treatment of micro-polluted water by non-pitch binder coal-based activated carbon[J]. Chinese Journal of Environmental Engineering, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
shu

非沥青粘结剂煤质活性炭处理微污染水

  • 1.

    太原理工大学煤科学与技术教育部和山西省重点实验室, 太原 030024

  • 基金项目:

    国家自然科学基金资助项目(51274147)

    山西省社会发展科技攻关项目(20120313008-1)

  • 中图分类号: X703

Treatment of micro-polluted water by non-pitch binder coal-based activated carbon

  • 1.

    Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China

  • Fund Project:

  • 摘要: 以烟煤为主要原料,采用非沥青粘结剂,用气体活化法制备了非沥青粘结剂煤质颗粒活性炭(NP-GAC),采用FI-IR、BET和SEM等技术对其物化性质进行了表征,并研究了NP-GAC吸附微污染水中有机物的性能。结果表明,NP-GAC比表面积803.28 m2/g,总孔容为0.5111 cm3/g,微孔率和中孔率分别为59.07%和37.59%,属于中微孔发达型煤质活性炭;NP-GAC含有微量的羟基和酯基,主要吸附微污染水中的烷烃、芳香烃和杂环等有机物分子;NP-GAC的表面不均匀,主要依靠表面分布的非均匀孔道结构进行吸附有机物分子,较好地符合Freundlich等温吸附模型;NP-GAC处理微污染水的优化条件为:吸附时间150 min,投加量2.5 g/L,pH值7.80,处理温度50~60℃,在该条件下对初始浓度为9.66 mg/L的微污染水处理有较好的效果,水样中COD和UV254去除率分别达到83.76%和97.78%。
    Abstract: The non-pitch binder granule coal-based activated carbon(NP-GAC) was prepared using bitumite and non-pitch binder as precursor by the method of steam activation. The physical and chemical properties were characterized by the Fourier transform infrared spectrometry(FT-IR), specific surface porosity detector(BET) and scanning electron microscope(SEM), and the adsorption properties of organic matter in the micro-polluted water were studied. Results indicated that NP-GAC is micropore and mesopore developed coal-based activated carbon with specific surface area of 803.28 m2/g, total pore volume of 0.5111 cm3/g, microporosity and mesoporosity of 59.07% and 37.59%, respectively. NP-GAC, containing trace hydroxyl and ester group, mainly adsorbs alkanes, aromatic hydrocarbons and heterocyclic organic molecules in the micro-polluted water, with the heterogeneity distribution pore structure on its uneven surface, which is in accordance well with Freundlich isothermal adsorption model. The optimized conditions are as follows:50~60℃, pH 7.80, activated carbon dosage of 2.5 g/L, and adsorption time of 150 min. When the initial COD of micro-polluted water is 9.66 mg/L, the adsorption performance of NP-GAC is readily achieved under the optimized conditions. The removal rate of COD and UV254 can reach 83.76% and 97.78%, respectively.
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  • 收稿日期:  2014-09-15
  • 刊出日期:  2015-11-18
郭彦江, 张永发, 李国强, 付亚利. 非沥青粘结剂煤质活性炭处理微污染水[J]. 环境工程学报, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
引用本文: 郭彦江, 张永发, 李国强, 付亚利. 非沥青粘结剂煤质活性炭处理微污染水[J]. 环境工程学报, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
shu
Guo Yanjiang, Zhang Yongfa, Li Guoqiang, Fu Yali. Treatment of micro-polluted water by non-pitch binder coal-based activated carbon[J]. Chinese Journal of Environmental Engineering, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
Citation: Guo Yanjiang, Zhang Yongfa, Li Guoqiang, Fu Yali. Treatment of micro-polluted water by non-pitch binder coal-based activated carbon[J]. Chinese Journal of Environmental Engineering, 2015, 9(11): 5273-5280. doi: 10.12030/j.cjee.20151123
shu

非沥青粘结剂煤质活性炭处理微污染水

  • 1. 太原理工大学煤科学与技术教育部和山西省重点实验室, 太原 030024
  • 收稿日期:  2014-09-15
基金项目:

国家自然科学基金资助项目(51274147)

山西省社会发展科技攻关项目(20120313008-1)

摘要: 以烟煤为主要原料,采用非沥青粘结剂,用气体活化法制备了非沥青粘结剂煤质颗粒活性炭(NP-GAC),采用FI-IR、BET和SEM等技术对其物化性质进行了表征,并研究了NP-GAC吸附微污染水中有机物的性能。结果表明,NP-GAC比表面积803.28 m2/g,总孔容为0.5111 cm3/g,微孔率和中孔率分别为59.07%和37.59%,属于中微孔发达型煤质活性炭;NP-GAC含有微量的羟基和酯基,主要吸附微污染水中的烷烃、芳香烃和杂环等有机物分子;NP-GAC的表面不均匀,主要依靠表面分布的非均匀孔道结构进行吸附有机物分子,较好地符合Freundlich等温吸附模型;NP-GAC处理微污染水的优化条件为:吸附时间150 min,投加量2.5 g/L,pH值7.80,处理温度50~60℃,在该条件下对初始浓度为9.66 mg/L的微污染水处理有较好的效果,水样中COD和UV254去除率分别达到83.76%和97.78%。

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