环境工程学报2011，Vol.5Issue(1)：11-15,5.
橘子皮皂化改性及其对重金属离子的吸附
Saponification of orange peel and its adsorption behavior for heavy metal ions
摘要
Abstract
In this study, a biosorbent, the modified orange peel (MOP), was prepared by treating chemically orange peel (OP) with ethanol and sodium hydroxide and was used to adsorb heavy metal ions from aqueous solution. The effects of concentration of sodium hydroxide solution and immersion time on the yield and adsorption percentage of the MOP were studied. The changes of physical structure and chemical properties of the MOP were characterized by using a variety of analytical instruments and methods, such as BET-N2 adsorption, infrared spectroscopy and scanning electron microscopy techniques. The results showed that the OP treated with 0. 2 mol/L NaOH solution for 16～20 h exhibited the higher yield and adsorption capacity for heavy metal ions. The MOP became rough porous in structural morphology and had more negative charge than raw OP, which facilitated the electrostatic interaction with cations. For FT-IR spectrum, results indicated that the methyl esters were hydrolyzed with NaOH and ester groups were converted to carboxylate ions, which improved the number of active functional groups with adsorption capacity.关键词
橘子皮/皂化/吸附/重金属离子Key words
orange peel/ saponification/ adsorption/ heavy metal ions分类
环境科学引用本文复制引用
冯宁川,郭学益,梁莎,田庆华..橘子皮皂化改性及其对重金属离子的吸附[J].环境工程学报,2011,5(1):11-15,5.基金项目
国家自然科学基金资助项目(50774100) （50774100）
