摘要
以酸性染料为对象 ,进行了粒状活性炭吸附扩散过程的动力学研究 .实验结果表明活性炭对酸性红B的吸附反应速度主要受吸附物质向活性炭表面的迁移速度和活性炭颗粒内的扩散速度的影响 ,由此建立了一种新的活性炭吸附过程的复合动态吸附模型 ,并使模型符合在较低浓度时受一级扩散反应控制为主 ,在较高浓度时受Boyd扩散控制为主 .
Adsorption dynamics of activated carbon for decolorizing dye wastewater was studied. The results show that there are two steps control the adsorption process. One is the transfer of dye in the solution to the interface of activated carbon particles. The other is the diffusion of dye molecules. The first step functions as a first rate reaction. The latter one confirms to Boyd Model. Consequently, a composite dynamic adsorption model is set up to abide by these rules. This model can express as a first rate on...
出处
《环境科学学报》
CAS
CSCD
北大核心
2001年第S1期85-87,共3页
Acta Scientiae Circumstantiae
关键词
活性炭
吸附
染料
模型
动力学
activated carbon
adsorption
model
dye
dynamics
