CAJ | 학술논문

本文研究了辣木籽对Cr(Ⅵ)液的吸附机理及吸附动力学。结果表明：辣木籽吸附Cr(Ⅵ)是一个以化学吸附为主的单分子层吸附过程，Langmuir等温线方程对室温下辣木籽吸附Cr(Ⅵ)拟合线性关系良好，相关系数R2=0.9958。FTIR的结果表明位于2914 cm-1、2854 cm-1的-CH2-官能团和1754 cm-1处的C=O官能团是辣木籽吸附Cr(Ⅵ)的主要活性基团，这些活性基团与Cr(Ⅵ)发生络合反应而将其去除。二级动力学方程对室温下辣木籽吸附Cr(Ⅵ)拟合结果最好，相关系数R2为0.9901；内扩散方程也能较好地描述吸附过程，相关系数R2为0.9417，说明吸附过程中内扩散是主要控制步骤。
본문연구료랄목자대Cr(Ⅵ)액적흡부궤리급흡부동역학。결과표명：랄목자흡부Cr(Ⅵ)시일개이화학흡부위주적단분자층흡부과정，Langmuir등온선방정대실온하랄목자흡부Cr(Ⅵ)의합선성관계량호，상관계수R2=0.9958。FTIR적결과표명위우2914 cm-1、2854 cm-1적-CH2-관능단화1754 cm-1처적C=O관능단시랄목자흡부Cr(Ⅵ)적주요활성기단，저사활성기단여Cr(Ⅵ)발생락합반응이장기거제。이급동역학방정대실온하랄목자흡부Cr(Ⅵ)의합결과최호，상관계수R2위0.9901；내확산방정야능교호지묘술흡부과정，상관계수R2위0.9417，설명흡부과정중내확산시주요공제보취。
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.