Adsorption and surface tension analysis of concentrated alkali halide brine solutions
Adsorption and surface tension analysis of concentrated alkali halide brine solutions
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DOI：
10.1016/j.mineng.2008.08.001
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发表时间：
2009-02-01
影响因子：
4.8
通讯作者：
Miller, Jan D.
中科院分区：
文献类型：
--
作者：
Ozdemir, Orhan;Karakashev, Stoyan I.;Miller, Jan D.
在这项研究中，使用固着气泡张力测定法测量了氯化钠和氯化钾溶液的平衡和动态表面张力，作为饱和浓度的函数（氯化钠为 5.2 M，氯化钾为 4.1 M）。实验结果表明，由于空气/盐水界面上离子的负吸附，这些盐和其他盐的表面张力随着浓度的增加而显着增加，无论其结构形成者和破坏者性质如何。此外，还研究了这些盐对十二烷基硫酸钠（SIDS）和甲基异丁基甲醇（MIBC）水溶液表面张力的影响。这些结果表明盐增加了 SIDS 和 MIBC 的表面活性。对于 SDS，KCl 比 NaCl 更能显着提高 SDS 的表面活性。就 MIBC 而言，NaCl 对 MIBC 表面活性的影响比 KCl 更显着。 (C) 2008 Elsevier Ltd. 保留所有权利。
In this study, the equilibrium and dynamic surface tensions of sodium chloride and potassium chloride solutions have been measured as a function of concentration up to saturation (5.2 M for NaCl and 4.1 M for KCl) using sessile bubble tensiometry. The experimental results show that the surface tension of these and other salts significantly increases with increasing concentration due to negative adsorption of ions at the air/brine interface, regardless of their structure maker and breaker nature. Furthermore, the effect of these salts on the surface tension of aqueous solutions of sodium dodecyl sulfate (SIDS) and methyl isobutyl carbinol (MIBC) was also studied. These results show that the salts increased the surface activity of SIDS and MIBC. In the case of SDS, KCl increased the surface activity of SDS more significantly than NaCl did. In the case of MIBC, the effect of NaCl on MIBC surface activity was more significant than that of KCl. (C) 2008 Elsevier Ltd. All rights reserved.