Fabrication of tannic acid-(3-amino)propyltriethoxysilane with zwitterionic carbon quantum dots coating on cellulose acetate tubular membrane for oil-water emulsion separation

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-11-08 DOI:10.1016/j.jtice.2024.105821

John Paul D. Arcilla , Hong-Li Yang , Hsin-Yi Lin , Pei-Chen Chen , Rhoda B. Leron , Hui-An Tsai , Kueir-Rarn Lee

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引用次数: 0

Abstract

Background

The discharge of large volumes of oily wastewater from industries has been a serious global concern. In recent years, membrane filtration has been considered an effective method for treating oily wastewater. However, membrane fouling is a major challenge inherent to this approach.

Methods

This study integrated zwitterionic carbon quantum dots (ZQDs) into a tannic acid-(3-aminopropyl)triethoxysilane (TA-APTES) coating on cellulose acetate (CA) tubular membranes to explore the potential for improve the hydrophilicity and anti-fouling properties of the membrane. The CA tubular membrane was fabricated by dry/wet spinning method. A green and one-step synthesis of TA-APTES with ZQDs was utilized to modify the surface of the CA pristine membrane.

Significant findings

Incorporating ZQDs enhanced the membrane's hydrophilicity. Results showed that the modified membrane with ZQDs (CA/T_0.4A+ZQDs) displayed super hydrophilicity with a water contact angle of 12.53 ± 0.9°, pure water permeance of 987.13 ± 57.9 L m^-2 h^-1 bar^-1, diesel-water emulsion permeance of 577.10 ± 64.7 L m^-2 h^-1 bar^-1, and enhanced oleophobicity with oil rejection rate of > 99 %. Furthermore, the CA/T0.4A+ZQDs membrane showed the best anti-fouling property, with the highest flux recovery ratio (FRR), lowest irreversible fouling ratio (R_ir,1) of 94.98 % and 5.05 %, respectively and mechanical stability after 5 cycles of oil-water separation.

Abstract Image

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在醋酸纤维素管状膜上涂布单宁酸-(3-氨基)丙基三乙氧基硅烷与齐聚物碳量子点，用于油水乳液分离

背景工业排放的大量含油废水一直是全球严重关切的问题。近年来，膜过滤被认为是处理含油废水的一种有效方法。本研究在醋酸纤维素（CA）管式膜的单宁酸-（3-氨基丙基）三乙氧基硅烷（TA-APTES）涂层中加入了齐聚物碳量子点（ZQDs），以探索提高膜的亲水性和防污性能的潜力。醋酸纤维素管状膜是用干/湿纺丝法制成的。重要发现ZQDs的加入增强了膜的亲水性。结果表明，含有 ZQDs 的改性膜（CA/T0.4A+ZQDs）具有超亲水性，水接触角为 12.53 ± 0.9°，纯水渗透率为 987.13 ± 57.9 L m-2 h-1 bar-1，柴油-水乳液渗透率为 577.10 ± 64.7 L m-2 h-1 bar-1，疏油性增强，油排斥率达 99%。此外，CA/T0.4A+ZQDs 膜的防污性能最好，通量恢复比（FRR）最高，不可逆污垢比（Rir,1）最低，分别为 94.98 % 和 5.05 %，并且在 5 次油水分离循环后具有机械稳定性。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.