Modification of Nanofiltration Membranes by Cationic Surfactant as a Promising Strategy for Treatment of Pharmaceutical Wastewater

IF 2.6 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

International Journal of Environmental Research Pub Date : 2024-09-09 DOI:10.1007/s41742-024-00656-9

Arezoo Rasouli, Ahmad Bagheri, Farideh Nabizadeh Chianeh

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Abstract

In this investigation, cationic surfactant cetyltrimethylammonium chloride (CTAC)-modified nanofiltration (NF) membranes were investigated for sodium diclofenac (DFS) removal from aqueous solution. The effects of CTAC incorporation on the membranes at various concentrations below, at, and above the critical micelle concentration (CMC) were evaluated in terms of membrane permeability, morphology, antifouling properties, and performance. CTAC-modified membranes exhibited enhanced structural properties, increased hydrophilicity, higher pure water flux (461 L/m² h), and superior antifouling resistance (98% BSA protein rejection, 82.1% FRR). Consequently, the optimized 0.1 wt% CTAC-modified membrane at CMC concentration exhibited superior rejection efficiency compared to the unmodified membrane, increasing from 35.62 to 65.17% for sodium diclofenac removal. The findings of this study demonstrate that the optimized membrane exhibited the best performance in all parameters, making it suitable for practical application in the removal process of sodium diclofenac.

Graphical Abstract

Abstract Image

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阳离子表面活性剂对纳滤膜的改性是一种处理制药废水的可行策略

在这项研究中，研究了阳离子表面活性剂十六烷基三甲基氯化铵（CTAC）改性纳滤（NF）膜去除水溶液中的双氯芬酸钠（DFS）。从膜的渗透性、形态、防污特性和性能方面评估了在临界胶束浓度（CMC）以下、临界胶束浓度（CMC）和临界胶束浓度（CMC）以上的不同浓度下，CTAC 的加入对膜的影响。CTAC 改性膜具有更强的结构特性、更高的亲水性、更高的纯水通量（461 升/平方米小时）和更优越的防污性能（98% 的 BSA 蛋白排斥率，82.1% 的 FRR）。因此，在 CMC 浓度下，优化的 0.1 wt% CTAC 改性膜比未改性膜表现出更高的去除率，双氯芬酸钠的去除率从 35.62% 提高到 65.17%。研究结果表明，优化后的膜在所有参数上都表现出最佳性能，适合在双氯芬酸钠的去除过程中实际应用。

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来源期刊

International Journal of Environmental Research 环境科学-环境科学

CiteScore

5.40

自引率

0.00%

发文量

104

审稿时长

1.7 months

期刊介绍： International Journal of Environmental Research is a multidisciplinary journal concerned with all aspects of environment. In pursuit of these, environmentalist disciplines are invited to contribute their knowledge and experience. International Journal of Environmental Research publishes original research papers, research notes and reviews across the broad field of environment. These include but are not limited to environmental science, environmental engineering, environmental management and planning and environmental design, urban and regional landscape design and natural disaster management. Thus high quality research papers or reviews dealing with any aspect of environment are welcomed. Papers may be theoretical, interpretative or experimental.