改性海泡石对亚甲基蓝的吸附性能

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41 mg/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9.74 nm，孔体积达7.064′10-2 cm3/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.

Adsorption of Methylene Blue onto Activated Sepiolite

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) cm~3/g, up by 117% and 92.6% respectively. The adsorption mechanism of methylene blue was also studied.