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Adsorption behavior of dodecyl hydroxypropyl sulfobetaine on limestone in high salinity water

机译：高盐度水中十二烷基羟丙基磺基甜菜碱在石灰石上的吸附行为

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摘要

Herein is presented a new methodology to determine the static adsorption of dodecyl hydroxypropyl sulfobetaine (DSB) on limestone with the use of HPLC. The results showed that with the increase of NaCl concentration, adsorption of DSB on the limestone surface decreased due to the increase of zeta potential (less negative). In contrast, with increasing CaCl2 concentration, adsorption of DSB decreased first and then increased, which corresponds to the change in trend of the limestone surface zeta potential. As to the influence of temperature, with an increase of temperature, the adsorption of DSB increased slightly. The behavior of DSB adsorption under different temperatures could be well interpreted by more adsorption of Ca2+ at higher temperature. It was also found that a little addition of inorganic salt could accelerate the formation of vesicles and more salt would inhibit the formation. By comparison of aggregation distribution before and after adsorption, it was found that micelles contribute more to adsorption than vesicles.
机译：本文介绍了一种利用HPLC测定十二烷基羟丙基磺基甜菜碱（DSB）在石灰石上的静态吸附的新方法。结果表明，随着NaCl浓度的增加，DSB在石灰石表面的吸附由于zeta电位的增加而降低（负值较小）。相反，随着CaCl2浓度的增加，DSB的吸附先下降然后上升，这对应于石灰石表面ζ电位趋势的变化。关于温度的影响，随着温度的升高，DSB的吸附量略有增加。 DSB在不同温度下的吸附行为可以通过在较高温度下更多的Ca2 +吸附来很好地解释。还发现少量添加无机盐可以加速囊泡的形成，而更多的盐则可以抑制囊泡的形成。通过比较吸附前后的聚集分布，发现胶束比囊泡对吸附的贡献更大。

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