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北京石油化工学院2026年研究生招生接收调剂公告
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paul9979

金虫 (小有名气)

[求助] 求助翻译一段英文,麻烦大侠了。

Based on the above results and discussions, it can be hypothesized that the self-supporting NaA zeolite membranes have a pervaporation effect on the desalination of NaCl solution under some conditions if the membranes have a suitable thickness (approximately 9.4mm with ion % rejection of 99.5%) and that this membrane is possible used as separation membranes for real seawater desalination because they possess high compressive strength (approximately 57 MPa) and good ion % rejection (approximately 99.5% at a water flux of 0.42 kg m-2 h-1 and 25ºC). In addition, the geopolymers can be easily fabricated and free-sintered at a low cost in contrast to traditional membranes. Therefore, the use of zeolite membranes for the separation of water from mixed solutions would be economical and effective. Although the technique and the desalination mechanism controlled by the non-zeolitic pores need to be improved, this paper provides new methods for the fabrication of self-supporting zeolite membranes with different Si/Al ratios (such as NaX, NaY, and ZSM-5) by adjusting the composition of the geopolymers. These membranes can be applied for dehydration, seawater desalination, and catalytic membrane reactors, as will most likely be studied in future works. In addition, the improvement of the separation effect by effectively closing the non-zeolitic porosity at the surface will be investigated.
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jiangguofeng

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【答案】应助回帖

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paul9979: 金币+25, 翻译EPI+1, ★★★★★最佳答案 2015-06-17 21:59:33
基于以上所述的结果和讨论,可以推测,这种自承NaA分子筛膜板如果具有合适的厚度(约9.4mm, 99.5%的离子截留率)就会在一定条件下对NaCl溶液的脱盐具有一种渗透蒸发的作用,而且这种膜板由于具有高抗压强度(约57兆帕)和良好的离子截留率(约99.5%,于0.42kg m-2h-1和25℃)可能用作实际海水脱盐的分离膜。另外,这种地质聚合物不同于传统的膜板,免烧结,能够以很低的成本很容易地制作出来。所以,在混合溶液的水分离当中使用分子筛膜板可能是最经济的和有效的。虽然这种通过非沸石孔控制的技术和脱盐机制仍需进一步改进,本文提供新的方法是通过调整地质聚合物的组分制造具有不同Si/Al比(例如,NaX, NaY和ZSM-5)的自承分子筛膜板。<这种膜板可能应用于脱水、海水脱盐和催化膜反应器,这最有可能是将来的工作中研究的对象。另外,还将调查通过有效地密合非沸石表面上的孔隙度改善分离效果的方法。
2楼2015-06-17 10:50:26
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