氧化石墨烯/多孔SiO_(2)微球复合材料的吸附性能研究  

Study on the Adsorption Properties of Graphene Oxide/Porous SiO_(2) Microsphere Composites

作　　者：强涛涛 邱波强 朱润桐 QIANG Taotao;QIU Boqiang;ZHU Runtong(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Xi’an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]轻化工程国家级实验教学示范中心,陕西西安710021

出　　处：《皮革科学与工程》2023年第2期28-33,41,共7页Leather Science and Engineering

基　　金：国家自然科学基金(52273268);陕西省重点科技创新团队(2020TD-009);陕西省秦创原队伍建设项目(2022KXJ-165)。

摘　　要：制革原料皮在加工过程中会产生大量的蛋白质残留物,利用吸附剂从制革废水中分离回收蛋白质可以实现制革废水污染物的循环使用。以鱼皮胶原蛋白为生物质模板,加入氧化石墨烯(GO)粉末,合成了氧化石墨烯/多孔SiO_(2)微球复合材料(GO/C-PSM)。以蛋白水解酶溶菌酶(LZ)为理论研究对象,结果表明GO/C-PSM对LZ的最大吸附量为45.4 mg/g,吸附过程与拟二级吸附动力学模型相符,同时GO/C-PSM对LZ的吸附等温线模型与Langmuir等温线模型相契合。GO/C-PSM在经过5次循环后,吸附率仍达到80%以上。此外,GO/C-PSM对实际制革工业废水中的蛋白质也有一定的吸附分离效果。A large amount of protein residues are produced during the processing of raw materials in leather industry. The separation and recovery of these residues from tannery wastewater by using adsorbents can realize the recycling use of leather wastewater pollutants. Herein, graphene oxide/porous SiO_(2)microsphere composites(GO/C-PSM) were synthesized by using fish skin collagen as raw material template with the addition of GO powder. Protease, lysozyme(LZ), was used as the theoretical research object. Results showed that the maximum adsorption capacity of GO/C-PSM for LZ was 45.4 mg/g,and the adsorption process was consistent with the pseudo-second-order adsorption kinetics model. At the same time, the adsorption isotherm model of GO/C-PSM for LZ conformed to the Langmuir isotherm model. After five cycles, the adsorption rate of GO/C-PSM still reached more than 80%. In addition, GO/C-PSM also had a certain adsorption and separation effect for proteins in actual tannery wastewater.

关 键 词：氧化石墨烯 多孔二氧化硅微球 蛋白质吸附 制革废水 

分 类 号：TQ424.2[化学工程]