用於有機溶劑反滲透(OSRO)應用的電紡ZIF-8基聚酮(PK)膜

Electrospun ZIF-8-based Polyketone (PK) Membrane for Organic Solvent Reverse Osmosis (OSRO) Application

傅子治(Kevin Fulbert)

指導教授 ： 童國倫

國立臺灣大學/工學院/化學工程學研究所/碩士(2022年)

https://doi.org/10.6342/NTU202202000

摘要

石化工業對環境造成不利影響的可能性，尤其是大量產生有害廢水，已引起全世界的關注。傳統技術已被證明是有效的，但它們消耗大量能量。近年來，膜技術被認為是一種可持續的方法，因為它與傳統方法相比更環保。最新出現的膜技術是有機溶劑反滲透（OSRO）膜。在此，通過靜電紡絲法製備了基於聚酮（PK）的OSRO膜。然後在膜上進行界面聚合 (IP) 過程以形成選擇性層，這將有助於提高分離性能，但會降低 PK 的水通量。因此，然後添加ZIF-8 (MOF) 以增強水通量。PK膜對鹽（97.06% 的NaCl截留率）和有機溶劑混合物（甲醇/庚烷的分離因子為4.38）顯示出良好的分離效率。當使用0.5 wt.% 時，將ZIF-8應用於PK也將水通量提高了61%。這項研究被認為展示了電紡PK纖維作為一種綠色技術在未來石化行業中的潛力，可以幫助減少這些行業造成的不利影響。

關鍵字

膜 ； 有機溶劑反滲透 (OSRO) ； 靜電紡絲 ； 聚酮 (PK) ； 金屬有機骨架 (MOF) ； 溶劑混合物分離

並列摘要

The likelihood of petrochemical industries in creating adverse environmental impacts, especially large production of hazardous wastewater, have caused major concern throughout the world. Conventional techniques have been proven effective, but they consume lots of energy. In recent years, membrane technology has been considered as a sustainable approach due to it being greener in comparison to the conventional method. The latest emerging membrane technology is the organic solvent reverse osmosis (OSRO) membrane. Herein, an OSRO membrane based on polyketone (PK) was fabricated via electrospinning method. An interfacial polymerization (IP) process was then carried out on the membrane to form a selective layer which would help in the separation performance but lowering the water flux of the PK. Thus, ZIF-8 (MOF) was then added to enhance the water flux. The PK membrane showed promising separation efficiency with salt (97.06% NaCl rejection) and organic solvent mixture (separation factor of 4.38 for methanol/heptane). The application of ZIF-8 to the PK also improved the water flux by 61% when 0.5 wt.% was used. This study is believed to showcase the potential of electrospun PK fibers to be used for the upcoming future in petrochemical industries as a green technology which can help reduce the adverse impacts caused by these industries.

並列關鍵字

Membrane ； Organic solvent reverse osmosis (OSRO) ； Electrospinning ； Polyketone (PK) ； Metal-organic framework (MOF) ； Solvent mixture separation

參考文獻

References

[1] Adam, W. J., Luke, B., Meares, P. (1983). The separation of mixtures of organic liquids by hyperfiltration. Journal of Membrane Science, 13(2), 127–149.

[2] Agarwal, M., Singh, K. (2017). Heavy metal removal from wastewater using various adsorbents: a review. Journal of Water Reuse and Desalination, 7(4), 387–419.

[3] Ahmadi, S., Sardari, E., Javadian, H. R., Katal, R., Sefti, M. V. (2013). Removal of oil from biodiesel wastewater by electrocoagulation method. Korean Journal of Chemical Engineering, 30(3), 634–641.

[4] Ahmed, F. E., Lalia, B. S., Hashaikeh, R. (2015). A review on electrospinning for membrane fabrication: Challenges and applications. Desalination, 356, 15–30.