Construction of Al3+-carboxymethyl cellulose superhydrophilic layer on wood filter surface for highly efficient oil/water emulsion separation

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-11-26 DOI:10.1016/j.coco.2024.102184

Zekai Mei , Shuting Ma , Shuzhen Ni , Weisheng Yang , Hongqi Dai , Fangong Kong

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引用次数: 0

Abstract

Recently, there has been significant attention given to the development of oil-water emulsion separation filters made from renewable and inexpensive wood for the separation and purification of oily wastewater. However, the relatively large pore sizes of wood cross-section slices make it challenging to effectively separate emulsified oils (5–20 μm) in wastewater. We propose constructing a dense superhydrophilic layer of Al³⁺-carboxymethyl cellulose on the surface of a wood filter using a dip-coating process for separating oil/water emulsions. The Al³⁺-CMC layer exhibits stable surface superwettability with θ_oil > 160° under water, which repels the non-polar oil phase and selectively allows water to pass through. The wood filter optimized for emulsion separation can achieve an efficiency of 96.32 % and a filtration flux of 410 L m⁻² h⁻¹ bar⁻¹. It maintains stable recyclables even after 6 cycles. The Al³⁺-CMC@DW filter shows considerable potential for practical applications in oil/water emulsion separation.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.