Gas-switchable and reusable cellulose nanocrystal membrane for active nanofiltration and ultrafiltration

用于活性纳滤和超滤的气体可切换且可重复使用的纤维素纳米晶膜

• 批准号: 548844-2020
• 负责人: Zhao, Yue
• 金额: $ 9.11万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=701036
• 关键词: Gas; switchable; reusable; cellulose; nanocrystal

In this project, we aim to develop a gas-responsive material for self-cleanable filtration membranes. The membranes in the market get fouled in a short time and need to be cleaned by often harsh and toxic chemicals that are expensive and harmful to the environment and the equipment. In our research, we develop a technology using gas-switchable membranes whose contaminations on surface and inside the pores can be cleaned by gases injected into the solution. The used gases (CO2 and N2) are cheap, plenty available and clean. Our proposed project includes three parts: 1) small-scale tests (the filtration tests of the industrial partners' samples, chemical and polymeric reactions, and membrane manufacturing); 2) semi-scale up (reactions' scale-up and sheet membrane manufacturing in a large scale), and 3) scale-up with a membrane manufacturer. The high performance in clean cleaning of the membranes by gases makes them a promising product to compete with the conventional membranes in the market. This new technology will not only ease the performance of wastewater treatment but also reduce the high cost of equipment's maintenance and washing chemicals. Finally, the membranes are produced by cellulose nanocrystals extracted from woods which is a clean and biocompatible compound.

在这个项目中，我们旨在开发一种用于自我清洁过滤膜的气体响应材料。市场上的膜在很短的时间内犯规，需要用昂贵且对环境和设备有害的苛刻和有毒化学物质清洁。在我们的研究中，我们使用可气体切换的膜开发了一项技术，该膜在表面上和毛孔内部的污染物可以通过注入溶液中的气体清洁。用过的气体（CO2和N2）便宜，可用且干净。我们提出的项目包括三个部分：1）小规模测试（工业伙伴样品的过滤测试，化学和聚合物反应以及膜制造）； 2）半尺度上（反应的规模上和膜制造大规模制造），以及3）与膜制造商进行扩展。高 通过气体清洁清洁膜的性能使它们成为与市场上传统膜竞争的有前途的产品。这项新技术不仅可以减轻废水处理的性能，而且还可以降低设备维护和洗涤化学品的高成本。最后，膜是由从树林中提取的纤维素纳米晶体产生的，该木质晶体是一种干净，生物相容性化合物。