摘要
采用十六烷基三甲基溴化铵和十二烷基硫酸钠复合改性沸石制备阴-阳离子改性沸石。通过X-衍射(XRD)和红外吸收光谱(IR)表征阴-阳离子改性沸石的结构,研究了改性沸石对废水中甲基橙的吸附性能、影响因素及动力学过程。结果表明:阴-阳离子改性沸石明显提高了沸石对甲基橙的吸附能力、吸附速率和吸附量,其吸附动力学行为遵循准二级吸附速率方程所描述的规律,平衡吸附量qe与平衡浓度Ce之间的关系符合Lang-muir等温吸附方程。
The composite modified zeolite of hexadecyl trimethyl ammonium bromide （CTMAB） and sodium dodecyl sulfate（SDS） was adopted to prepare the anion -cation modified zeolite,whose structure is characterized by XRD and IR. Meanwhile, the adsorption property, the influential elements and the adsorption kinetics process of this kind of modified zeolite onto ethyl orange in wastewater is studied. The results showed that the anion -cation modified zeolite, whose adsorption kinetics follows the laws of pseudo - second - order kinetic equation, can greatly improve adsorption ability, adsorption rate and adsorption amount of zeolite onto methyl orange. The relationship between equilibrium adsorption amount （qc） and equilibrium concentration （Cc） also corresponds with Langmuir isothermal adsorption equation.
出处
《矿产综合利用》
CAS
2011年第1期38-42,共5页
Multipurpose Utilization of Mineral Resources
关键词
阴-阳离子
改性沸石
吸附
甲基橙
Anion - cation
Modified zeolite
Adsorption
Methyl orange
