摘要
通过研究石墨烯-曝气组合工艺对海藻酸钠微滤行为的影响,发现石墨烯浓度和曝气量影响海藻酸钠的水通量和总阻力。研究结果显示,海藻酸钠微滤过程中加入的石墨烯微粒在曝气气流的作用下冲刷膜表面减少海藻酸钠在膜表面形成的凝胶层,有效降低膜总阻力,提高水通量。曝气量相同时,石墨烯浓度从20 mg/L增加到100 mg/L,水通量先增加后减少,总阻力则先降低后增加。石墨烯浓度相同时,水通量随曝气量的增加而增加,而总阻力则随曝气量的增加而降低。
Through the study of the influence of graphene-aeration combination process on sodium alginate microfiltration behavior,it was found that both graphene concentration and aeration rate affect the fluxes and membrane resistance.The results show that graphene added in the filtration tank scours the membrane surface under the action of aeration flow,limiting the formation of gel layer by sodium alginate on the membrane surface,reducing total resistance and improving flux.When graphene concentration increased from 20 mg/L to 100 mg/L,flux of sodium alginate increased firstly and then decreased,while the total membrane resistance reduced firstly and then increased at the same aeration rate.When graphene concentration kept the same,flux increased and the total resistance decreased with increasing of aeration rate.
作者
刘雅娟
武彦芳
费鹏
宋洁
邢宝岩
田慧
张雪丽
Liu Yajuan;Wu Yanfang;Fei Peng;Song Jie;Xing Baoyan;Tian Hui;Zhang Xueli(College of Chemistry and Chemical Engineering,Shanxi Datong University,Datong 037009,China;Institute of Carbon Materials,Shanxi Datong University,Datong 037009,China)
出处
《山东化工》
CAS
2021年第7期34-36,共3页
Shandong Chemical Industry
基金
山西省回国留学人员科研资助项目(2017-108)
大同市科技计划项目(2018020)。
关键词
膜污染
海藻酸钠
石墨烯
曝气量
微滤
membrane fouling
sodium alginate
graphene
aeration rate
microfiltration
