期刊论文

Study on the adsorption performance of modified microcrystalline cellulose hydrogels on U(Ⅵ)in water

中文

应用化工

1671-3206

2023

52

12

3303-3308

10.3969/j.issn.1671-3206.2023.12.016

2021JJ30579:湖南省自然科学基金项目

本校为第一机构

采用化学沉积法制备了微晶纤维素负载二氧化锰水凝胶(MCC@MnO2/SA),用于吸附水中U(Ⅵ)。通过SEM-EDS、FTIR、XPS对水凝胶进行表征,并考察了不同pH值、接触时间、温度、U(Ⅵ)初...展开更多 采用化学沉积法制备了微晶纤维素负载二氧化锰水凝胶(MCC@MnO2/SA),用于吸附水中U(Ⅵ)。通过SEM-EDS、FTIR、XPS对水凝胶进行表征,并考察了不同pH值、接触时间、温度、U(Ⅵ)初始浓度条件下MCC@MnO2/SA对U(Ⅵ)的吸附影响。结果表明,在U(Ⅵ)初始浓度为10 mg/L、pH值为4、温度为303 K,吸附6 h时,MCC@MnO2/SA对U(Ⅵ)的最大吸附量达234.11 mg/g,比改性前提高了11%左右。吸附过程符合拟二级动力学,其等温吸附模型更...

Microcrystalline cellulose-supported manganese dioxide hydrogels(MCC@MnO2/SA)were prepared by chemical deposition and used to adsorb U(Ⅵ)in water.The hydrogels were characterized by SEM-EDS,FTIR and XPS,and the adsorption effect of MCC@MnO2/SA on U...MORE Microcrystalline cellulose-supported manganese dioxide hydrogels(MCC@MnO2/SA)were prepared by chemical deposition and used to adsorb U(Ⅵ)in water.The hydrogels were characterized by SEM-EDS,FTIR and XPS,and the adsorption effect of MCC@MnO2/SA on U(Ⅵ)under different factors(pH,contact time,...