Reliable and efficient membrane processes for clean and sustainable production of fresh water from saline waste

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2024-04-10 DOI:10.1002/jctb.7651

Rachid Ouchn, Youssef Chaouqi, Ahmet Halil Avci, Said Gmouh, Efrem Curcio, Omar Cherkaoui, Miloudi Hlaibi

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引用次数: 0

Abstract

BACKGROUND

Increasing water scarcity as a result of growing demand highlights the urgency for innovative solutions. Seawater desalination is emerging as a crucial answer, with direct contact membrane distillation (DCMD) emerging as a promising technology in this context. In particular, membranes produced from ionic liquids constitute a well-established avenue for the preparation of membranes by nonsolvent phase inversion (NIPS) in the field of desalination.

RESULTS

Tests carried out as part of the DCMD, using PVDF membranes modified with the ionic liquid (IL) MPF₆ and TBAPF₆ synthesized during this study, in particular those containing 50% TBAFP₆, demonstrate a notable improvement in hydrophobicity (121.48°) and porosity(79%). The results suggest that the flux of the PVDF-TBAPF₆ membrane shows a clear improvement of 300% compared to the support alone. Various parameters such as salinity, temperature and flow rate were examined, highlighting their impact on membrane performance. The low energy parameters (E_a = 43.36 kJ mol⁻¹, ΔH^≠ = 40.86 kJ mol⁻¹) indicate a diffusion mechanism of vapor molecules, occurring by successive jumps through the IL interaction sites.

CONCLUSION

Extensive experimental investigations have carefully anticipated the permeate flow in DCMD, aiming to efficiently extract pure water. DCMD is positioned as a promising technology for desalination and treatment of BRINE solutions. Therefore, this study can make a significant contribution to the expansion of DCMD by facilitating the prediction and optimization of operational parameters, thereby paving the way for expanded application of this technology. © 2024 Society of Chemical Industry (SCI).

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利用含盐废水生产清洁和可持续淡水的可靠高效膜工艺

背景由于需求不断增长，水资源日益匮乏，这凸显了创新解决方案的紧迫性。海水淡化正在成为一个重要的解决方案，而直接接触膜蒸馏（DCMD）则是其中一项前景广阔的技术。结果作为 DCMD 的一部分，使用本研究中合成的 IL MPF6 和 TBAPF6 改性的 PVDF 膜（尤其是含有 50% TBAFP6 的膜）进行的测试表明，疏水性和孔隙率（121,48°, 79%）有了显著改善。结果表明，与单独的支撑物相比，PVDF-TBAPF6 膜的通量明显提高了 300%。对盐度、温度和流速等各种参数进行了研究，强调了它们对膜性能的影响。低能量参数（Ea = 43,36 Kj/mol，ΔH≠ = 40,86 Kj/mol）表明水蒸气分子的扩散机制是通过 IL 相互作用位点的连续跃迁发生的。DCMD 被定位为 BRINE 溶液脱盐和处理的一项前景广阔的技术。因此，本研究有助于预测和优化运行参数，从而为扩大 DCMD 的应用范围做出重要贡献。本文受版权保护，保留所有权利。

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.