山东农业大学学报（自然科学版）Issue(4)：576-580,5.DOI:10.3969/j.issn.1000-2324.2015.04.020
辣木籽对水中Cr（Ⅵ）的吸附机理及吸附动力学研究
Study on Adsorption Mechanism and Kinetics of Moringa oleifera Lam. Seeds to Cr(Ⅵ) in Water
摘要
Abstract
Biological adsorption mechanism and kinetics of Cr (VI) from aqueous solution onto Moringa oleifera seeds was studied. Experimental results showed that:Cr (VI) adsorption on Moringa oleifera seeds was a chemical and monomolecular layer adsorption process; adsorption isotherm data fitted Langmuir isotherm equation under room temperature and the correlation coefficient R2 was 0.9958. FTIR analytic results indicated that-CH2-groups located at 2914 cm-1, 2854 cm-1 and C=O group located at 1754 cm-1 were the main active groups to adsorb Cr (VI) on Moringa oleifera seeds, and complexing reaction occur between these active groups and Cr (Ⅵ) while Cr (Ⅵ) ion removed from the water;Adsorption kinetics data fitted two order kinetics equation the best , and the correlation coefficient R2 was 0.9901; The diffusion equation whose corresponding correlation coefficient R2 was 0.9417 could describe the adsorption process also, and it illustrated internal diffusion was the main control step of the adsorption process.关键词
辣木籽/吸附机理/吸附动力学Key words
Moringa oleifera Lam.seeds/adsorption mechanism/adsorption kinetics分类
资源环境引用本文复制引用
伍斌,邹一..辣木籽对水中Cr（Ⅵ）的吸附机理及吸附动力学研究[J].山东农业大学学报（自然科学版）,2015,(4):576-580,5.基金项目
干热河谷特色生物资源开发四川省高校重点实验室开放基金项目(GR-2013-C-005) （GR-2013-C-005）
