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首页> 外文期刊>Environmental Science & Technology >Amino Acids as Natural Inhibitors for Hydrate Formation in CO_2 Sequestration
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Amino Acids as Natural Inhibitors for Hydrate Formation in CO_2 Sequestration

机译：氨基酸作为CO_2螯合中水合物形成的天然抑制剂

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摘要

The motivation for this work was the potential of hydrophobic amino acids such as glycine, L-alanine, and L-valine to be applied as thermodynamic hydrate inhibitors (THIs). To confirm their capabilities in inhibiting the formation of gas hydrates, three-phase (liquid-hydrate-vapor) equilibrium conditions for carbon dioxide hydrate formation in the presence of 0.1-3.0 mol % amino acid solutions were determined in the range of 273.05-281.45 K and 14.1-35.2 bar. From quantitative analyses, the inhibiting effects of the amino acids (on a mole concentration basis) decreased in the following order: L-valine > L-alanine > glycine. The application of amino acids as THIs has several potential advantages over conventional methods. First, the environmentally friendly nature of amino acids as compared to conventional inhibitors means that damage to ecological systems and the environment could be minimized. Second, the loss of amino acids in recovery process would be considerably reduced because amino acids are nonvolatile. Third, amino acids have great potential as a model system in which to investigate the inhibition mechanism on the molecular level, since the structure and chemical properties of amino acids are well understood.
机译：这项工作的动机是将疏水性氨基酸（例如甘氨酸，L-丙氨酸和L-缬氨酸）用作热力学水合物抑制剂（THI）的潜力。为了确认其抑制气体水合物形成的能力，在273.05-281.45的范围内确定了在0.1-3.0 mol％氨基酸溶液存在下用于形成二氧化碳水合物的三相（液体水合物-蒸气）平衡条件。 K和14.1-35.2巴。从定量分析来看，氨基酸的抑制作用（以摩尔浓度为基准）按以下顺序降低：L-缬氨酸> L-丙氨酸>甘氨酸。与常规方法相比，氨基酸作为THI的应用具有多个潜在优势。首先，与传统抑制剂相比，氨基酸对环境友好，这意味着对生态系统和环境的损害可以降至最低。其次，由于氨基酸是非挥发性的，因此在回收过程中氨基酸的损失将大大减少。第三，由于氨基酸的结构和化学性质已广为人知，因此作为研究分子水平抑制机理的模型系统，氨基酸具有很大的潜力。

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  • 来源
    《Environmental Science & Technology》 |2011年第13期|p.5885-5891|共7页
  • 作者

    Jeong-Hoon Sa; Bo Ram Lee; Da-Hye Park; Kunwoo Han; Hee Dong Chun; Kun-Hong Lee;

  • 作者单位

    Department of Chemical Engineering, Pohang University of Science & Technology, San 31, Hyoja-Dong, Pohang-Si, Gyeongbuk790-784, Korea;

    Department of Chemical Engineering, Pohang University of Science & Technology, San 31, Hyoja-Dong, Pohang-Si, Gyeongbuk790-784, Korea;

    Department of Chemical Engineering, Pohang University of Science & Technology, San 31, Hyoja-Dong, Pohang-Si, Gyeongbuk790-784, Korea;

    CO_2 Project, Research Institute of industrial Science & Technology, San 32, Hyoja-Dong, Pohang-Si, Gyeongbuk 790-600, Korea;

    CO_2 Project, Research Institute of industrial Science & Technology, San 32, Hyoja-Dong, Pohang-Si, Gyeongbuk 790-600, Korea;

    Department of Chemical Engineering, Pohang University of Science & Technology, San 31, Hyoja-Dong, Pohang-Si, Gyeongbuk790-784, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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