摘要
釆用低成本、环境友好的化合物,以微波辅助溶剂热法合成了中空花状γ-AI2O3纳米球,并研究去除水中的硒.结果表明,所得γ-AI2O3纳来球具有大的比表面积,表面有丰富的凳基.y-AbOs纳米球对硒具有优良的吸附性能,去除效果为Se(IV)>Se(VI);溶液初始pH对去除Se(IV)和Se(VI)的影响较大,酸性条件更有利于Se(IV)和Se(VI)丝去除,吸附Se(IV)和Se(VI)的适宜pH为2-5.8.吸附Se(IV)和Se(VI)的最大容量分别为17.31.&51mg/g,所需反应的平衡时间分别为18、2h.SO,对硒吸附的彬响大于Ct对硒吸附的影响.中空花状γ-AI2O3纳米球低成本、高比表面积、高的吸附能力的优点,可应用于含硒地下水或者工业废水的处理.
Hollow flowerlike γ-Al2O3 nanospheres were synthesized through microwave assisted solvothermal method by using low cost and environmentally friendly compounds, and it for selenium removal from water was studied. The results showed that the synthesized hollow flowerlike γ-Al2O3 nanospheres had a large specific surface area with abundant hydroxyl groups on the surface. The γ-Al2O3 nanospheres had excellent adsorption properties for seleniu, and the removal efficiency of Se(IV) was better than Se(VI). Initial solution pH had significant effect on Se(IV) and Se(VI) removal, acidic conditions were more suitable for Se(IV) and Se(VI) removal, the applicable pH range for Se(IV) and Se(VI) removal was 2?5.8. Maximum adsorption capacities of Se(IV) and Se(VI) was 17.31 mg/g and 8.51 mg/g in 18 h and 2 h, respectively. SO42 had greater side effect on selenium adsorption than Cl. These low cost hollow flowerlike γ-Al2O3 nanospheres, which also have high specific surface area and high adsorption capacities, are applied to the treatment of groundwater or industrial wastewater containing selenium.
作者
何柳
林丽莎
刘通
杨宏伟
王小■
解跃峰
HE Liu;Liza Yu Chen Lin;LIU Tong;YANG Hongwei;WANG Xiaomao;XIE Yuefeng(State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,China;Beijing No. 80 High School,Beijing 100102,China;School of Forestry,Northeast Forestry University,Harbin 150040,China;Institute of food safety,Chinese Academy of Inspection and Quarantine,Beijing 100176,China;Environmental Engineering Programs,The Pennsylvania State University,Harrisburg 17057,USA)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第6期23-27,共5页
Technology of Water Treatment
基金
“十三五”水体污染控制与治理科技重大专项(2017ZX07501-002)
