摘要
采用浸渍法合成负载Fe^2+/Cu^2+腐植酸吸附剂,通过FTIR和SEM等分析方法对负载后的吸附剂结构进行表征,并研究其吸附亚甲蓝染料的性能。结果表明:负载Fe^2+/Cu^2+腐植酸吸附剂改性过程发生了脱水和脱羧反应,表面粗糙并形成非均匀孔;在最佳吸附条件下,即吸附剂投加量8 g/L,吸附时间150 min,pH=2,反应温度25 ℃,吸附率可达97%以上;负载Fe^2+/Cu^2+腐植酸吸附剂对亚甲基蓝的吸附符合二级动力学模型,属于化学吸附;且符合Freundlich吸附等温模型。
The Fe^2+/Cu^2+-loaded humic acid(HA) adsorbent was synthesized by impregnation method. The structure of the adsorbent after loading was characterized by FTIR and SEM analysis, and the adsorption performance of methylene blue dye was studied. The results show that the dehydration and decarboxylation reactions occur during the modification of Fe^2+/Cu^2+-loaded humic acid adsorbent, the surface is rough and the non-uniform pores are formed. The best adsorption condition is the dosage of adsorbent 8 g/L, adsorption time of 150 min, pH=2, reaction temperature of 25 ℃, and adsorption rate is over 97%;The adsorption of methylene blue by the Fe^2+/Cu^2+-loaded humic acid adsorbent is in accordance with the freundlich adsorption model and belongs to chemical adsorption.
作者
卢亚楠
郭雅妮
穆林聪
LU Yanan;GUO Yani;MU Lincong(School of Environmental and Chemical Engineering,Xi′an Polytechnic University,Xi′an 710048,China)
出处
《西安工程大学学报》
CAS
2019年第6期614-619,共6页
Journal of Xi’an Polytechnic University
基金
陕西省重点研发计划项目(2017GY-121)
陕西省科技厅工业科技攻关项目(2015GY168)
西安市科技局科技创新引导项目(201805030YD8CG14(13))
