高级检索

    朱鸣凡, 廖春鑫, 陈爱平, 李春忠. 改性活性炭及其甲醛净化性能[J]. 华东理工大学学报(自然科学版), 2021, 47(5): 561-568. DOI: 10.14135/j.cnki.1006-3080.20200911005
    引用本文: 朱鸣凡, 廖春鑫, 陈爱平, 李春忠. 改性活性炭及其甲醛净化性能[J]. 华东理工大学学报(自然科学版), 2021, 47(5): 561-568. DOI: 10.14135/j.cnki.1006-3080.20200911005
    ZHU Mingfan, LIAO Chunxin, CHEN Aiping, LI Chunzhong. Modified Activated Carbon and Its Formaldehyde Purification Performance[J]. Journal of East China University of Science and Technology, 2021, 47(5): 561-568. DOI: 10.14135/j.cnki.1006-3080.20200911005
    Citation: ZHU Mingfan, LIAO Chunxin, CHEN Aiping, LI Chunzhong. Modified Activated Carbon and Its Formaldehyde Purification Performance[J]. Journal of East China University of Science and Technology, 2021, 47(5): 561-568. DOI: 10.14135/j.cnki.1006-3080.20200911005

    改性活性炭及其甲醛净化性能

    Modified Activated Carbon and Its Formaldehyde Purification Performance

    • 摘要: 经氧化剂与亲核加成剂分步复合改性后,制得改性活性炭。通过BET比表面积测试法分析测定活性炭比表面积和孔结构等参数。以甲醛作为模型污染物,测试改性活性炭对空气中甲醛的净化性能。结果表明,通过先氧化剂后亲核加成剂的分步复合改性后,活性炭对甲醛的快速净化率显著提高,而通过先亲核加成剂后氧化剂的分步复合改性后,活性炭表现出优异的长效净化效果。活性炭经先浸渍2-咪唑烷酮后浸渍次氯酸钠的分步复合改性后,椰壳活性炭和煤质活性炭对甲醛的长效净化率分别达到94.2%和96.2%。

       

      Abstract: Modified activated carbon was prepared by stepwise composite modification in the presence of oxidant and nucleophilic addition reagent. The specific surface area and pore structure of the activated carbon were measured by N2 adsorption-desorption (BET). Formaldehyde was used as a model pollutant to test the purification performance of the modified activated carbon. The results showed that the stepwise composite modification, first with the oxidant, and then the nucleophilic addition reagent, could significantly improved the fast purification efficiency of activated carbon for formaldehyde. In contrast, the stepwise composite modification, first with the nucleophilic addition reagent, and then with the oxidant, showed an excellent long-term purification effect. After the activated carbon was impregnated first with 2-imidazolidinone followed by treatment with sodium hypochlorite in a stepwise manner, the long-term purification efficiency of formaldehyde with coconut shell and coal-based activated carbon reached 94.2% and 96.2%, respectively.

       

    /

    返回文章
    返回