• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >De-ammonification using direct contact membrane distillation - An experimental and simulation study
【24h】

De-ammonification using direct contact membrane distillation - An experimental and simulation study

机译：使用直接接触膜蒸馏除去 - 一种实验和仿真研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, a mathematical model was developed to simulate the ammonia recovery behaviour in a Direct Contact Membrane Distillation (DCMD) system. The developed model successfully predicted the binary mass transfer phenomenon (water and ammonia vapour) across the PTFE membrane under different operating conditions, including non-traditional DCMD operating conditions that the permeate temperature is the same or higher than the feed temperature. The developed model suggests that ammonia mass transfer increases as a function of feed inlet temperature, achieving 90% of the ammonia removal at 70 degrees C feed inlet temperature only requires less than half of the time at 20 degrees C feed inlet temperature. It was also found that pH value difference between the feed and permeate sides plays the most significant role in ammonia recovery compared to other operating conditions. The developed model demonstrates that, for ammonia removal, it is not necessary to create (1) temperature difference between the feed and permeate sides, or (2) higher feed inlet temperature compared to permeate inlet temperature for DCMD system. This potentially makes the MD-based ammonia recovery system more economically viable as no external heat energy is required.
机译：在该研究中，开发了一种数学模型以模拟直接接触膜蒸馏（DCMD）系统中的氨恢复行为。开发模型在不同的操作条件下成功地预测了在PTFE膜上穿过PTFE膜的二元质量转移现象（水和氨蒸气），包括渗透温度与进料温度相同或高的非传统DCMD操作条件。开发模型表明，随着进料入口温度的函数，氨传质增加，在70℃的饲料入口温度下实现90％的氨除去仅需要小于20摄氏度入口温度的一半时间。还发现，与其他操作条件相比，饲料和渗透侧面之间的pH值差异在氨恢复中起最大的作用。开发的模型表明，对于氨去除，与DCMD系统的渗透入口温度相比，没有必要在进料和渗透侧面之间产生（1）温度差，或（2）更高的进料入口温度。这可能使MD基氨回收系统更经济地可行，因为不需要外部热能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号