摘要
对海泡石进行了硫酸改性、高温改性、硫酸/高温改性,以亚甲基蓝为吸附对象,研究了改性方法对海泡石吸附性能的影响,对各改性海泡石进行了孔径、孔体积等表征.结果表明,3种改性方法中,硫酸/高温改性对海泡石吸附性能的提高效果最好,吸附量比改性前提高47.8%,达41mg/g,吸附等温线符合Langmuir方程.硫酸/高温复合改性后的海泡石平均孔径达9.74nm,孔体积达7.064×10-2cm3/g,分别提高117%和92.6%.对改性海泡石对亚甲基兰的吸附机理进行了探讨.
Sepiolite was activated by sulfuric acid, heat and sulfuric acid-heat methods. The adsorption of methylene blue on the modified sepiolite samples was investigated. The pore size and volume of these samples were characterized. The results showed that the sulfuric acid-heat activation method has the best effect in three methods, the adsorptive capacity of modified sepiolite reached 41 mg/g, up by 47.8%. The Langmuir equation could be adaptable to the adsorption isotherm process. The pore size and pore volume of sepiolite activated by acid-heat method reached 9.74 nm and 7.064× 10^-2 cm3/g, up by 117% and 92.6% respectively. The adsorption mechanism of methylene blue was also studied.
出处
《过程工程学报》
CAS
CSCD
北大核心
2009年第6期1095-1098,共4页
The Chinese Journal of Process Engineering
基金
广西自然科学基金资助项目(编号:桂科自0832097)
广西环境工程与保护评价重点实验室基金资助项目(编号:桂科能0702Z013)
关键词
海泡石
改性
吸附
亚甲基蓝
sepiolite
activation
adsorption
methylene blue
