标题:Adsorption kinetics of nitrate from aqueous solutions onto modified corn residue
作者:Bao-yu Gao;Yu Wang;Qin-yan Yue;Xing Xu;Wen-wen Yue;Xiu-ming Xu
作者机构:School of Environmental Science and Engineering,Shandong University;School of Environmental Science and Engineering,Shandong Uni
来源:International Journal of Environment and Pollution
出版年:2011
期:1
页码:58-68
关键词:nitrate;adsorption kinetics;intra-particle diffusion model;first-order equation;MCR;modified corn residue;RCR;raw corn residue;epichlorohydrin;dimethylamine;Freundlich isotherm;adsorbent dose.
摘要:The adsorption kinetics of nitrate from aqueous solutions onto Modified Corn Residue (MCR) was studied. The Raw Corn Residue (RCR) was modified by epichlorohydrin in the presence of pyridine, and the adsorption kinetics was investigated in batch experiments. The results showed that the MCR adsorbs nitrate effectively, and the maximum adsorption capacities were 80.84 mg g-1 and 72.73 mg g_l at 20°C and 40°C, respectively. The adsorption of nitrate under different initial concentrations all fit the first-order reaction. The adsorption rates were controlled by both membrane diffusion and intra-particle diffusion.
资源类型:期刊论文
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