响应面法优化制备塑料-锯末活性炭

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马培勇^1*，王田¹，武晋州¹，邢献军¹，张贤文²

1. 合肥工业大学机械工程学院，安徽合肥 230009 2. 合肥工业大学汽车与交通工程学院，安徽合肥 230009

收稿日期:2018-04-19修回日期:2018-06-02出版日期:2019-04-22发布日期:2019-04-18
通讯作者:马培勇

基金资助:安徽省重大专项项目

Optimization of activated carbon preparation from sawdust and plastics using response surface method

Peiyong MA^1*, Tian WANG¹, Jinzhou WU¹, Xianjun XING¹, Xianwen ZHANG²

1. School of Mechanical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China2. School of Automobile and Transportation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China

Received:2018-04-19Revised:2018-06-02Online:2019-04-22Published:2019-04-18
Contact:Peiyong Ma

摘要/Abstract

摘要： 将梧桐锯末和聚丙烯塑料按比例混合后，采用K2CO3活化法制备活性炭，基于中心组合实验设计(CCD)的响应面法(RSM)，以碘吸附值和亚甲基蓝吸附值为优化目标，优化工艺参数。结果表明，当塑料含量为19wt%、无水K2CO3与梧桐锯末质量比为1.73、活化温度为958℃、活化时间为91 min时，所制活性炭的性能最优，碘吸附容量为1320.97 mg/g，亚甲基蓝的吸附容量为471.95 mg/g，与二阶模型预测值接近，表明该模型具有较高的可信度。方差分析结果表明，盐料比、活化温度、活化时间提高对活性炭的碘吸附容量有显著的促进作用，而塑料含量对活性炭碘吸附容量有抑制作用；活化温度、活化时间对活性炭的亚甲基蓝吸附容量影响显著，与塑料含量均具有促进作用，而盐料比是非显著因素且有抑制作用。最优条件下所制活性炭的比表面积为1916.10 m2/g，总孔容为1.12 cm3/g，其中介孔高达70.10%。相比于单因素优化实验所制活性炭，比表面积提高了454.11 m2/g。FT-IR分析表明两种优化条件下所制活性炭的官能团基本没有变化，活性炭亚甲基蓝吸附量的提高主要是由于样品的比表面积增大。

引用本文

马培勇王田武晋州邢献军张贤文. 响应面法优化制备塑料-锯末活性炭[J]. 过程工程学报, 2019, 19(2): 377-386.
Peiyong MA Tian WANG Jinzhou WU Xianjun XING Xianwen ZHANG. Optimization of activated carbon preparation from sawdust and plastics using response surface method[J]. Chin. J. Process Eng., 2019, 19(2): 377-386.

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