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活性炭中孔结构对双组分染料的竞争吸附

王春颖 宋磊 王夔

王春颖, 宋磊, 王夔. 活性炭中孔结构对双组分染料的竞争吸附[J]. 环境科学研究, 2016, 29(11): 1679-1686.
引用本文: 王春颖, 宋磊, 王夔. 活性炭中孔结构对双组分染料的竞争吸附[J]. 环境科学研究, 2016, 29(11): 1679-1686.
WANG Chunying, SONG Lei, WANG Kui. Competitive Adsorption of Two Component Dyes onto Activated Carbon with Different Mesopore Volumes[J]. Research of Environmental Sciences, 2016, 29(11): 1679-1686.
Citation: WANG Chunying, SONG Lei, WANG Kui. Competitive Adsorption of Two Component Dyes onto Activated Carbon with Different Mesopore Volumes[J]. Research of Environmental Sciences, 2016, 29(11): 1679-1686.

活性炭中孔结构对双组分染料的竞争吸附

基金项目: 中央高校基本科研业务费专项资金项目(JB-ZR1150)

Competitive Adsorption of Two Component Dyes onto Activated Carbon with Different Mesopore Volumes

  • 摘要: 为探讨GAC(颗粒活性炭)的Vmes(中孔孔容)对双组分染料吸附行为的影响,对GAC进行改性,得到Vmes分别为0.16、0.25、0.30、0.50 cm3/g下的中孔GAC,并对MB(亚甲基蓝)、CV(结晶紫)、MO(甲基橙)进行了单组分和双组分体系的吸附试验.结果表明:①单组分体系中,随着Vmes的增加,各染料的饱和吸附量均增大,MB从88.98 mg/g增至226.69 mg/g;CV从56.04 mg/g增至105.17 mg/g;MO从64.87 mg/g增至129.66 mg/g.②在由MB和MO组成的分子量接近的双组分体系中,两种染料表现为拮抗作用;随着Vmes的增加拮抗作用增强,并且对MB的拮抗作用大于对MO的作用.③在由MB和CV组成的分子量相差较大的双组分体系中,对于分子量较小的染料MB表现出拮抗作用,随着Vmes的增加,拮抗作用逐渐减小;对于分子量较大的染料CV来说,随着Vmes的改变吸附行为发生改变,当Vmes小于0.25 cm3/g时表现为协同作用,大于0.30 cm3/g转变为拮抗作用,并且随着Vmes的增大逐渐增强.研究显示,染料分子的物理形态对双组分物质竞争吸附的影响起到决定性作用,而吸附剂Vmes的增加促进了对单双组分染料分子的吸附容量增加.

     

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出版历程
  • 收稿日期:  2016-04-16
  • 修回日期:  2019-07-05
  • 刊出日期:  2016-11-25

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