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Effect of temperature difference on performance of membrane crystallization-based membrane distillation system

机译：温差对基于膜结晶的膜蒸馏系统性能的影响

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摘要

This study explores membrane distillation (MD) is suitable to recover pure water and to generate the supersaturation condition for the crystal formation. The system was carried out under a different temperature of feed solution. It was observed that the increase in the mass flux of product solution is due to the increase in the temperature difference between the feed and product solution. Although the temperature difference is important for the mass flux of product solution, it needs to consider a reasonable temperature difference. The highest rejection (%) was observed at feed temperature 60℃ and it is easy to control. It was found that both surface crystallization and bulk crystallization influenced the flux decline of MD. Calcium sulfate crystals can be produced by MD crystallization with a growing crystal size distribution and average size of 100 μm.
机译：这项研究探索了膜蒸馏（MD）适用于回收纯净水并为晶体形成产生过饱和条件的问题。该系统在进料溶液的不同温度下进行。观察到产物溶液的质量通量的增加是由于进料和产物溶液之间的温差的增加。尽管温差对于产物溶液的质量通量很重要，但仍需要考虑合理的温差。在进料温度为60℃时观察到最高的废品率（％），并且易于控制。发现表面结晶和本体结晶均影响MD的通量下降。硫酸钙晶体可以通过MD结晶生产，其晶体尺寸分布不断增长，平均尺寸为100μm。

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  • 来源
    《Desalination and water treatment》 |2013年第9期|1362-1365|共4页
  • 作者

    Young-Sun Park; Chang-Kyu Lee; Seog-Ku Kim; Hyun-Je Oh; Sang-Ho Lee; June-Seok Choi;

  • 作者单位

    Department of Construction Environment Engineering, University of Science & Technology, Deajeon 305-333,Korea,Korea Institute of Construction Technology, Goyang-Si, Gyeonggi-Do 411-712, Korea;

    Korea Institute of Construction Technology, Goyang-Si, Gyeonggi-Do 411-712, Korea;

    Korea Institute of Construction Technology, Goyang-Si, Gyeonggi-Do 411-712, Korea;

    Korea Institute of Construction Technology, Goyang-Si, Gyeonggi-Do 411-712, Korea;

    Department of Construction and Environmental Engineering, Kookmin University, Seoul 136-702, Korea;

    Korea Institute of Construction Technology, Goyang-Si, Gyeonggi-Do 411-712, Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    seawater desalination; RO brines; membrane distillation; calcium sulfate; crystallization;

    机译：海水淡化反渗透盐水;膜蒸馏硫酸钙;结晶;

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