摘要
制备了4种球形活性炭,利用溶菌酶模拟中分子尿毒症毒素β_2-微球蛋白,测定了球形活性炭对溶菌酶的吸附等温线、吸附动力学曲线以及2 h吸附率,从而推测其对β2-微球蛋白的吸附能力。结果表明,吸附等温线拟合结果符合Langmuir等温式,吸附动力学曲线拟合结果符合伪二级动力学方程。球形活性炭的中孔比表面积越大,对溶菌酶的吸附量越大。2 h内,4种球形活性炭对溶菌酶的吸附率均达到72%以上(最高可达86.9%),表明其对溶菌酶具有良好的吸附能力,由此推测其对β_2-微球蛋白也具有良好的吸附能力。
Four kinds of spherical activated carbons are prepared. By using lysozyme to simulate β_2-microglobulin,one of the middle molecule uremic toxins,the adsorption isotherms,adsorption kinetic curves and 2 h adsorption rates of lysozyme by spherical activated carbons are measured. Their adsorption capacity of lysozyme is also evaluated. The results show that the adsorption isotherms of lysozyme could be well described by Langmuir isotherm model. The adsorption kinetic curves fit well with pseudo-second-order kinetic equation. The adsorption amount of lysozyme is increased with the mesopore specific surface area. 2 h Adsorption rates of lysozyme for four spherical activated carbons are all higher than72%（ up to 86. 9%）. It indicates that the spherical activated carbons have good adsorption capacity of lysozyme as well as β_2-microglobulin.
出处
《现代化工》
CAS
CSCD
北大核心
2016年第8期60-63,共4页
Modern Chemical Industry
基金
国家自然科学基金资助项目(21177038)
关键词
球形活性炭
溶菌酶
Β2-微球蛋白
吸附
spherical activated carbon
lysozyme
β_2-microglobulin
adsorption
