NBs-GO膜的渗透性能及其对染料截留性能  

Permeability of nanobubbles-graphene oxide membrane and its dye retention performance

作　　者：张扬天 黄一 韩昌道 钟俊磊 李民亮 陈亮[3] 李露 ZHANG Yangtian;HUANG Yi;HAN Changdao;ZHONG Junlei;LI Minliang;CHEN Liang;LI Lu(College of Environment and Resource,College of Carbon Neutral,Zhejiang Agriculture and Forestry University;College of Optical,Mechanical and Electrical Engineering,Zhejiang Agriculture and Forestry University;School of Physical Science and Technology,Ningbo University;College of Chemistry and Materials Engineering,Zhejiang Agriculture and Forestry University)

机构地区：[1]浙江农林大学环境与资源学院、碳中和学院 [2]浙江农林大学光机电工程学院 [3]宁波大学物理科学与技术学院 [4]浙江农林大学化学与材料工程学院

出　　处：《环境工程技术学报》2024年第4期1112-1120,共9页Journal of Environmental Engineering Technology

基　　金：国家自然科学基金面上项目(12074341)。

摘　　要：氧化石墨烯(GO)膜因其优异的物化特性、独特的水通道,被广泛应用于复杂废水中的染料分离。通过将纳米气泡(NBs)吸附到GO上,形成纳米气泡-氧化石墨烯(NBs-GO)膜,有望提高膜的染料分离性能。以NBs-GO膜处理亚甲基蓝溶液模拟的染料废水,测定了该膜的水渗透率、截留率和稳定性等指标,并探究了染料种类与浓度、膜厚度和GO的制备条件等因素对膜性能的影响。结果表明:NBs-GO膜的水渗透率相比传统GO膜高出50.8%,并且能够将亚甲基蓝的截留率维持在99.88%,具有更优的染料分离性能。此外,NBs-GO膜在72 h内展现出了良好的稳定性,截留率始终保持在90%以上。即使在改变染料种类、浓度及膜厚度等条件下,NBs-GO膜依然保持了优异的水渗透性能。纳米气泡的引入为提高GO膜的染料分离效率提供了新的思路,在染料废水的处理方面展现出巨大的发展潜力,这一研究在染料废水处理领域具有广泛的应用前景。Graphene oxide(GO)membranes were widely used for dyestuffs separation in complex wastewater due to their excellent physical and chemical properties and unique water channeling.The formation of nanobubblesgraphene oxide(NBs-GO)membranes by adsorption of nanobubbles(NBs)onto GO was expected to improve the dye separation performance of the membranes.The NBs-GO membranes were used to treat dyestuffs wastewater simulated by methylene blue solution.The water permeability,retention rate and stability of the membranes were determined,and the effects of factors such as dyestuff type and concentration,membrane thickness,and GO preparation conditions on the membrane performance were investigated.The results showed that the water permeability of the NBs-GO membrane was 50.8%higher than that of the traditional GO membrane,and the retention rate of methylene blue was maintained at 99.88%,which was superior to that of the traditional GO membrane.In addition,the NBs-GO membrane showed good stability within 72 h,and the retention rate was always maintained above 90%.The NBs-GO membranes maintained excellent water permeation performance even when the dyestuffs type,concentration and membrane thickness were changed.Therefore,the introduction of nanobubbles provides a new idea to improve the dyestuffs separation efficiency of GO membranes,which shows great potential in the treatment of dyestuffs wastewater,and this discovery is expected to open up a new path for the advancement of dye wastewater treatment technology.

关 键 词：纳米气泡(NBs) 氧化石墨烯(GO) 亚甲基蓝 染料废水 水渗透率 

分 类 号：X703[环境科学与工程—环境工程]