| 三醋酸甘油酯在活性炭上的吸附特性 |
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| 引用本文： | 陈家元,宋磊,黎溪楠.三醋酸甘油酯在活性炭上的吸附特性[J].环境科学与技术,2013(6):53-56. |
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| 作者姓名： | 陈家元 宋磊 黎溪楠 |
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| 作者单位： | 华侨大学化工学院;温州大学化工与材料工程学院 |
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| 基金项目： | 厦门市科技计划(3502Z20113014);浙江省有机化学与皮革化工重中之重学科开放基金(100061200126);华侨大学基本科研业务费专项基金资助(JB-ZR1150);华侨大学高层次人才科研启动基金(11BS215) |
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| 摘 要： | 三醋酸甘油酯在卷烟中主要作为醋酸纤维过滤嘴的增塑剂使用。在不同的温度和相对湿度条件下,研究活性炭对三醋酸甘油酯的吸附机理,探讨了活性炭的孔结构对其吸附性能的影响。结果表明:活性炭吸附三醋酸甘油酯符合Langmuir模型,其饱和吸附量为333 mg/g;高温有利于吸附三醋酸甘油酯,而增加湿度则抑制了三醋酸甘油酯的吸附;在一定范围内,当活性炭孔面积大于三醋酸甘油酯最小截面积的2.8倍时,活性炭对三醋酸甘油酯的吸附量增多,反之减少。因此,较大的微孔孔径有利于活性炭吸附三醋酸甘油酯。
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| 关 键 词： | 三醋酸甘油酯 吸附 活性炭 孔结构 |
Adsorption Ability of Triacetin on Activated Carbon |
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| CHEN Jia-yuan,SONG Lei,LI Xi-nan.Adsorption Ability of Triacetin on Activated Carbon[J].Environmental Science and Technology,2013(6):53-56. |
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| Authors: | CHEN Jia-yuan SONG Lei LI Xi-nan |
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| Institution: | 1(1.School of Chemical Engineering,Huaqiao University,Xiamen 361021,China; 2.School of Chemical and Material Engineering,Wenzhou University,Wenzhou 325027,China) |
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| Abstract: | Triacetin is widely used in the cigarette industry as a plasticizer,a cross-linking agent for cellulose acetate filters.Triacetin adsorption on activated carbon was studied under different temperatures and relative humidity.Effects of pore structure of activated carbon on triacetin adsorption ability were investigated.Experimental results showed that triacetin adsorption isotherm was found to fit Langmuir model and the saturated amount of adsorption was 333 mg.g-1.Triacetin adsorption amount increased as temperature increased over the range of 30~80 ℃ and decreased as the relative humidity increased over the range of 20%~90%.As pore area of activated carbon was 2.8 times greater than the smallest sectional area of triacetin,the adsorption ability of activated carbon increased while vice versa.Hence larger pore size distribution would enhance the adsorptive capacity. |
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| Keywords: | triacetin adsorption activated carbon pore structure |
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