Hydrogen-bonded methylcellulose/poly(acrylic acid) complex membrane for oil-water separation

The contamination of water with oil spills and organic pollutants have become a global environmental challenge which requires urgent solutions. In this work, membranes for oil-water separation are fabricated by forming a reusable and stable layer with methylcellulose (MC) and poly(acrylic acid) (PAA...

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Bibliographic Details
Published in:Surface & coatings technology 2019-06, Vol.367, p.49-57
Main Authors: Babiker, Dafaalla M.D., Zhu, Liping, Yagoub, Hajo, Xu, Xiaowei, Zhang, Xuejian, Shibraen, Mahmoud H.M.A., Yang, Shuguang
Format: Article
Language:English
Subjects:
Acrylic acid
Carboxyl group
Complex membrane
Hydrogen bonding
Hydrophobicity
Hydroxyl groups
Membranes
Methylcellulose
Oil spills
Oil-water separation
Organic chemistry
Pollutants
Poly(acrylic acid)
Separation
Separators
Sunflower oil
Sunflowers
Trichloromethylsilane
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Summary:The contamination of water with oil spills and organic pollutants have become a global environmental challenge which requires urgent solutions. In this work, membranes for oil-water separation are fabricated by forming a reusable and stable layer with methylcellulose (MC) and poly(acrylic acid) (PAA) on stainless-steel mesh (SSM) via a chemical bath deposition method. Due to the interactions between the carboxyl group (–COOH) in PAA and the hydroxyl group (–OH) in MC through hydrogen bonding, MC/PAA complex membranes will be formed on the surface of SSM. The MC/PAA membrane is then modified by trichloromethylsilane (TCMS) to obtain the hydrophobicity and oleophilicity. This design can adequately repel water and let oils penetrate through the membrane freely. A high flux of 1055 L m−2 h−1 and an excellent separation efficiency of 99.9% are achieved when using the as-prepared membrane to separate sunflower oil/water mixture. This facile and low-cost method for fabricating oil-water separators has potential to be widely used in the fields of oil and petroleum industries. [Display omitted] •The membrane is prepared via a facile method with low-cost and biodegradable polymers materials.•The as-prepared mesh can be applied to separate oil-water mixtures driven only by gravity.•The oil-water separation membrane exhibits an excellent separation efficiency and high flux.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2019.03.051