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首页> 外文期刊>RSC Advances >Properties of surfactants on high salt-affected sandy land in enhanced sand fixation: salt tolerance, adsorption isotherms and ecological effect
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Properties of surfactants on high salt-affected sandy land in enhanced sand fixation: salt tolerance, adsorption isotherms and ecological effect

机译：高盐影响砂土对砂土的表面活性剂的性质：耐盐，吸附等温线和生态效应

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摘要

In the present paper surfactant, for the first time, was used to improve the sand fixing ability of emulsion in high salt-affected sandy land. This study started from the analysis of the main components of sand particles from Golmud sandy land, Qinghai province, China, by X-ray diffraction (XRD). Then, two surfactants, sodium dodecyl sulfate (SDS, an anionic surfactant) and Pluronic L35 (L35, a nonionic surfactant), were selected and used to conduct a salt tolerance test before their reaction with sand from a salty desert. The water solubilization method and Fourier transform infrared (FTIR) spectroscopy have been adopted to investigate the salt tolerance of surfactants and their reaction with sand particles, respectively. The adsorption and adsorption characteristics of two surfactants at varied salinities by sand particles have been considered because of its significance for the interaction. In addition, the influence of SDS and L35 on the growth of Escherichia coli (E. coli) and sand microbes were evaluated to understand their ecological effect. The experimental results showed that SDS and L35 can visibly enhance the sand-fixing ability of the emulsion in high salt-affected sandy land. The related mechanism is that, first, SDS and L35 could improve the stability of the emulsion against the salt if the preparation of emulsion uses SDS and L35 as the emulsifying agents; second, SDS and L35 could change the morphology of salt in sand (this experimental result we will report in another paper). The investigation into the influence of SDS and L35 on the growth of E. coli and sand microbes also showed a dependable ecological effect.
机译：在本文的纸张表面活性剂中，首次用于改善高盐影响砂土中乳液的砂固定能力。本研究从X射线衍射（XRD）分析了来自中国青海砂岩的沙子颗粒的主要成分。然后，选择两个表面活性剂，十二烷基硫酸钠（SDS，阴离子表面活性剂）和Pluronic L35（L35，非离子表面活性剂），并在与来自咸沙漠的沙子反应之前进行耐盐性试验。已经采用水溶性方法和傅立叶变换红外（FTIR）光谱分析了表面活性剂的耐盐性及其与砂颗粒的反应。由于其对相互作用的意义，考虑了两种表面活性剂的吸附和吸附特性。此外，SDS和L35对大肠杆菌（大肠杆菌）和砂微生物的生长的影响得到评价以了解其生态效应。实验结果表明，SDS和L35可以明显地提高乳液在高盐影响的砂土中的固定能力。相关机制是，如果乳液的制备使用SDS和L35作为乳化剂，则SDS和L35可以改善乳液对盐的稳定性;其次，SDS和L35可以改变沙子中盐的形态（我们将在另一篇论文中报告的这种实验结果）。对SDS和L35对大肠杆菌和砂微生物生长的影响也表现出可靠的生态效应。

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  • 来源
    《RSC Advances》 |2015年第100期|共10页
  • 作者

    Gong Wei; Zang Yunxiao; Xie Hao; Liu Bailing; Chen Hualin; Li Chenying; Ge Lijuan;

  • 作者单位

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

    Chinese Acad Sci Chengdu Inst Organ Chem R&

    D Ctr Mat &

    Technol Ecol Sand Fixing Chengdu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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