油茶壳残渣制备活性炭的工艺

doi:10.16085/j.issn.1000-6613.2015.12.023

化工进展 ›› 2015, Vol. 34 ›› Issue (12): 4280-4284.DOI: 10.16085/j.issn.1000-6613.2015.12.023

油茶壳残渣制备活性炭的工艺

熊道陵, 许光辉, 张团结, 陈金洲, 陈超

江西理工大学冶金与化学工程学院, 江西赣州 341000

收稿日期:2015-03-26 修回日期:2015-04-13 出版日期:2015-12-05 发布日期:2015-12-05
通讯作者: 熊道陵(1965—),男,博士,教授,主要从事再生资源综合利用的研究。E-maildlxiongcs@163.com。
作者简介:熊道陵(1965—),男,博士,教授,主要从事再生资源综合利用的研究。E-maildlxiongcs@163.com。
基金资助:
国家自然科学基金(51364014)、江西省科技厅项目(2013BBG70003)、2013年江西省级大学生创新创业训练计划(201310407037,201310407057)及2014年度江西省普通本科高等学校专业综合改革试点项目[赣教高字(2014)43号]。

Activated carbon prepared from camellia oleifera shell residue after alcohol extraction

XIONG Daoling, XU Guanghui, ZHANG Tuanjie, CHEN Jinzhou, CHEN Chao

School of Metallurgy and Chemical Engineering, Jiangxi University of Science & Technology, Ganzhou 341000, Jiangxi, China

Received:2015-03-26 Revised:2015-04-13 Online:2015-12-05 Published:2015-12-05

摘要/Abstract

摘要： 以油茶壳醇浸取后残渣为原料,以磷酸活化法制备活性炭,考察了浸渍比、磷酸质量分数和活化温度等对活性炭吸附性能及其得率的影响;活性炭的吸附性能由碘吸附值、亚甲基蓝吸附值表征。结果表明,在酸/炭浸渍比为3:1、磷酸质量分数70%、活化温度500℃时,活性炭的吸附性能最佳,其碘、亚甲基蓝吸附值和得率分别为1043.29mg/g、148.5mg/g和38.77%。采用物理吸附仪在77K下测定其N₂吸附脱附等温线,利用BET法和BJH法计算比表面积和孔径分布,其比表面积为1626.45m²/g,平均孔径为4.7nm,总孔容为1.94cm³/g。同时采用FTIR和XRD分析了活性炭的表面官能团和微观结构。

关键词: 活性炭, 油茶壳残渣, 活化, 吸附, 制备, 孔结构

Abstract: Activated carbons were prepared from camellia oleifera shell residue after alcohol extraction by phosphoric acid. The influences of impregnation ratio,mass fraction of phosphoric acid and activation temperature on the yield of activated carbon and the adsorption capacity were characterized by adsorption iodine value and adsorption methylene blue value,respectively. The results showed that activated carbon with the optimal adsorption capacity could be prepared at an impregnation ratio of acid/carbon of 3,a phosphoric acid mass fraction of 70% and an activation temperature of 500℃. The adsorption iodine value,adsorption methylene blue value and yield of activated carbon at optimized condition were 1043.29mg/g,148.5mg/g and 38.77%,respectively. Nitrogen adsorption isotherms at 77K of the same activated carbon were measured by physical adsorption instrument. The porous structure was investigated by nitrogen adsorption isotherms on the bases of Brunauer-Emmett-Teller (BET) and Barrett- Joyner-Halenda (BJH) methods. The specific surface area,average pore size and pore volume were 1626.45m²/g,4.7nm and 1.94cm³/g,respectively. Surface functional group and micro-structures of activated carbon with the optimal adsorption capacity were analyzed by Fourier Transform Infrared Spectrometer (FTIR) and X-ray diffraction (XRD).

Key words: activated carbon, camellia oleifera shell residue, activation, adsorption, preparation, porosity

中图分类号:

TQ424.1

熊道陵, 许光辉, 张团结, 陈金洲, 陈超. 油茶壳残渣制备活性炭的工艺[J]. 化工进展, 2015, 34(12): 4280-4284.

XIONG Daoling, XU Guanghui, ZHANG Tuanjie, CHEN Jinzhou, CHEN Chao. Activated carbon prepared from camellia oleifera shell residue after alcohol extraction[J]. Chemical Industry and Engineering Progree, 2015, 34(12): 4280-4284.

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油茶壳残渣制备活性炭的工艺

Activated carbon prepared from camellia oleifera shell residue after alcohol extraction

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