柚子皮吸附剂对水中对羟基苯甲酸酯的吸附

发布时间：2018-03-12 06:50

  本文选题：柚子皮吸附剂　切入点：水中对羟基苯甲酸酯　出处：《环境科学与技术》2016年S2期 　论文类型：期刊论文

【摘要】：以废柚子皮为原料制备了柚子皮吸附剂并将其用于去除水中对羟基苯甲酸酯新型污染物。经FTIR和SEM表征发现柚子皮吸附剂具有紧凑的纤维组织结构,内部存在大量的孔隙,富含羟基。系统考察了溶液的pH值,水中对羟基苯甲酸酯的初始浓度,吸附时间,吸附温度对水中对羟基苯甲酸酯吸附性能的影响。结果表明:pH=6.5时,柚子皮吸附剂对水中对羟基苯甲酸酯的吸附效果最佳,饱和吸附量qm均大于660 mg/g;吸附过程可在20 min内达到平衡。5次循环使用后柚子皮吸附剂对水中对羟基苯甲酸酯的吸附效率仍能保持95%以上,材料可以多次循环使用。
[Abstract]:The grapefruit peel adsorbent was prepared from waste pomelo peel and used to remove new pollutants of p-hydroxybenzoate in water. FTIR and SEM characterization showed that grapefruit peel adsorbent had compact fiber structure and a large number of pores. The effects of pH value of solution, initial concentration of p-hydroxybenzoate in water, adsorption time and adsorption temperature on the adsorption properties of p-hydroxybenzoate in water were investigated. The sorption effect of grapefruit peel adsorbent on p-hydroxybenzoate in water was the best. The saturated adsorption capacity QM was more than 660mg / g, and the adsorption efficiency of grapefruit peel adsorbent for water was still over 95%, and the material could be reused many times after the adsorption process reached equilibrium 5 times within 20 min. The adsorption efficiency of grapefruit peel adsorbent for water was over 95%.
【作者单位】： 浙江省宁波市鄞州中学;
【分类号】：X52
，

本文编号：1600422