李敏, 洪孝挺, 吕向红, 钟昌成. 鸡内金活性炭对酸碱性染料的吸附[J]. 华南师范大学学报(自然科学版), 2015, 47(3): 51-0. doi: 10.6054/j.jscnun.2014.12.010
引用本文: 李敏, 洪孝挺, 吕向红, 钟昌成. 鸡内金活性炭对酸碱性染料的吸附[J]. 华南师范大学学报(自然科学版), 2015, 47(3): 51-0. doi: 10.6054/j.jscnun.2014.12.010
Endothelium corneum gigeriae galli Activated Carbon Adsorption for Acidic and Basic Dyes[J]. Journal of South China Normal University (Natural Science Edition), 2015, 47(3): 51-0. doi: 10.6054/j.jscnun.2014.12.010
Citation: Endothelium corneum gigeriae galli Activated Carbon Adsorption for Acidic and Basic Dyes[J]. Journal of South China Normal University (Natural Science Edition), 2015, 47(3): 51-0. doi: 10.6054/j.jscnun.2014.12.010

鸡内金活性炭对酸碱性染料的吸附

Endothelium corneum gigeriae galli Activated Carbon Adsorption for Acidic and Basic Dyes

  • 摘要: 本文以鸡内金(ECGG)为原料,先用450 ℃高温炭化,后添加KOH作为活化剂,分别选取800 ℃ 、900 ℃和1000 ℃作为活化温度,制备出三种类型活性炭(ECGG-800,EGGG-900和EGGG-1000). 通过SEM、BET等对三种类型活性炭进行分析表征,并选取ECGG-900做酸性品红和亚甲基蓝的吸附饱和,进行两种最常用的吸附模型Freundlich和Langmuir的拟合. 结果表明用Freundlich吸附等温线模型能更好地解释鸡内金活性炭对酸性染料的吸附;而对于碱性染料的吸附,则Langmuir吸附等温线模型更有说服力;且该活性炭对酸性品红的吸附量可达1.682 g/g,对亚甲基蓝的吸附量更达2.045 g/g. 随着吸附时间的延长,三种活性炭对染料的去除率也随即增大. 由此可知,鸡内金活性炭对处理酸性和碱性染料效果均佳,是一种具有发展潜力的吸附剂.

     

    Abstract: Activated carbon was prepared from endothelium corneum gigeriae galli ( ECGG) by preliminary carbonization at 450 ℃ and final KOH activation at high temperatures( ECGG-800 ℃, ECGG-900 ℃ and ECGG-1000 ℃ ). The surface and structural properties are analyzed with SEM and BET. And then selected ECGG-900 to draw its adsorption isotherms about acidic and basic dyes, the adsorption isotherm data were fitted by the two most used models, the Freundlich and Langmuir models. Results show that adsorption isotherm to acid fuchsin is best fitted with Freundlich model , while methylene blue is more accord with Langmuir model. The adsorption capacity of acid fuchsin and methylene blue reached 1.682 g/g, 2.045 g/g. As the adsorption time sessions, three kinds of activated carbons removal rate of dyes also immediately increased. It can be know from the foregoing that the Endothelium corneum gigeriae galli activated carbon can achieve a best effectiveness for removing the acid fuchsin and methylene blue in the water solution and it is a potential adsorbent.

     

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