摘要
采制11种典型水处理用商品活性炭样品,两两混合进行配炭,对配炭组分及配炭的碘值、亚甲蓝值、丹宁酸值和焦糖脱色率等吸附性能指标及孔结构特征进行了测试和表征。采用加权平均拟合、线性拟合及多项式拟合等方法,研究配炭吸附性能指标与配炭组分吸附性能指标间的量化关系,关联活性炭孔结构与吸附性能指标。结果表明:活性炭配炭的吸附性能指标可由配炭组分的吸附性能指标通过加权平均计算,相对误差<4%,且配炭的孔结构也具备加和性;活性炭碘值、亚甲蓝值、丹宁酸值和焦糖脱色率的大小分别取决于活性炭1.0~2.8nm、1.5~10nm、2.0~50nm和3.0~50nm孔隙的发达程度,与孔容积的线性相关系数介于0.91~0.94。
Eleven typical commercial activated carbons for water treatment were sampled,and then a series of blending activated carbon samples were prepared by mixing them in pairs.The adsorption properties including iodine number,methylene blue adsorption value,tannic acid number and caramel adsorption value of these original and blending activated carbon samples were determined,and their pore structure characteristics were characterized.Besides,the quantitative relationship of adsorption property between blending activated carbons and original activated carbons was investigated by weighted average fitting method,linear fitting method and polynomial fitting method.Also,the dependence of adsorption property on porosity was analyzed and discussed.The results showed that the adsorption properties of blending activated carbons can be calculated by those of original activated carbon according to the weighted average method,the relative error is less than 4%.And the blending carbon porosity is also additive.The iodine number,methylene blue adsorption value,tannic acid number and caramel adsorption value are dependent on the pore volume of 1.0-2.8 nm,1.5-10 nm,2.0-50 nm and 3.0-50 nm,with linear correlation coefficients of 0.91-0.94,respectively.
作者
刘德钱
解强
万超然
邓锋
黄小晴
翟笑迪
LIU Deqian;XIE Qiang;WAN Chaoran;DENG Feng;HUANG Xiaoqing;ZHAI Xiaodi(School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;School of Chemical Engineering,Guizhou University of Engineering Science,Bijie 551700,Guizhou,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2019年第12期5578-5586,共9页
Chemical Industry and Engineering Progress
基金
中央高校基本科研业务费项目(2009KH10)
关键词
活性炭
配炭
吸附性能
孔结构
activated carbon
blending carbon
adsorption property
pore structure