摘要
考察nTiO_(2)纳米粒子团聚和初始粒子浓度、多孔介质粗糙程度和颗粒大小以及流体流速和离子浓度等因素对纳米粒子在多孔介质中迁移的影响。结果表明,团聚程度越高,穿透率越小;纳米粒子的穿透率随着浓度的增大而减小;表面越粗糙的多孔介质可以附着更多的纳米粒子,减小纳米粒子的穿透率;粒径较小的多孔介质中,纳米粒子穿透率较低;流体流速越高,纳米粒子穿透率越高;较高离子浓度会降低纳米粒子穿透率。
The effects of nTiO_(2) agglomeration and initial particle concentration of nanoparticles,roughness and particle size of porous media,and ionic strength of fluid flow rate on the transport of nanoparticles in porous media were investigated.The results showed that the increasing degree of agglomeration and concentration of nanoparticles led to a decrease penetration rate.The porous media with rough surface could attach more nanoparticles,thus reducing the penetration rate of nanoparticles.The porous media with small particle size led to a lower penetration rate of nanoparticles.The penetration rate of nanoparticles was higher with higher flow rate.And the higher ionic strength condition could reduce the penetration rate of nanoparticles.
作者
彭爱夏
吴明火
占敬敬
PENG Ai-xia;WU Ming-huo;ZHAN Jing-jing(School of Ocean Science and Technology,Dalian University of Technology,Panjin 124221,China)
出处
《应用化工》
CAS
CSCD
北大核心
2022年第2期307-310,共4页
Applied Chemical Industry
基金
国家自然科学基金项目(21876022)
国家重大研发计划(2019YFC1803803)。
关键词
纳米粒子
多孔介质
迁移
穿透率
nanoparticles
porous media
transport
penetration rate
