苏州科技大学学报（自然科学版）2018，Vol.35Issue(1)：56-61,70,7.DOI:10.12084/j.issn.2096-3289.2018.01.011
流速对nTiO2和磷酸盐迁移的影响及模型分析
Influence of flow rate on the transport of nTiO 2 and phosphate and its modeling
摘要
Abstract
We studied Zeta potentials of nanoparticles titanium dioxides(nTiO2)in different concentration of NaNO3and phosphate(P)solutions. In addition, the effect of flow rate on the transport of nTiO2in P was inves-tigated at pH=6.5. Experimental results show that the Zeta potential of nTiO2is compressed with the increasing ion concentration(IC)of NaNO3at pH=6.5.The negative charge increases with the augment of P. Therefore, the high P and low NaNO3induce the stabilization of nTiO2aggregates. The transport experiments suggest that the rapid flow rate is favorable for the transportability of nTiO2and soluble phosphate. The breakthrough transport curves(BTCs)of nTiO2in sand columns can be fitted well with two-site kinetic attachment model.The modeling results suggest that the values of first-order attachment rate coefficients(k2)and detachment rate coefficients (k2d)on site 2 and first-order attachment rate coefficients(k1)on site 1 are responsible to the attaching efficien-cy of nTiO2on sands and their transportability.关键词
nTiO2/Zeta电位/迁移/磷酸盐Key words
nTiO2/Zeta potential/transport/phosphate分类
资源环境引用本文复制引用
冯刚,徐楠,李祖玲,曹玉和,孙可青..流速对nTiO2和磷酸盐迁移的影响及模型分析[J].苏州科技大学学报（自然科学版）,2018,35(1):56-61,70,7.基金项目
国家自然科学基金面上研究项目(21377090) （21377090）
