Anti-fouling strategy involving in-situ aeration and dielectrophoresis

2024年06月13日14:42 来源：无

A novel method for treating oily wastewater uses superhydrophilic TiSe2 nanospheres and an electric field for in-situ aeration and dielectrophoresis. This strategy improves fouling resistance by 90% and achieves separation efficiencies of over 99% for oil-in-water emulsions. Utilizing the high salinity of seawater, the method remains effective even after four months of use.

Research proves that the innovative anti-fouling strategy with TiSe2 nanospheres and an electric field increases fouling resistance by 90%. Source: Larisa AI - adobe.stock.com

Membrane fouling is a significant barrier to the development of membrane separation processes, particularly in the treatment of oily wastewater resulting from frequent offshore oil spills. A green and sustainable solution is imperative to address this environmental concern. This paper presents a novel method involving the in-situ growth of superhydrophilic TiSe2 nanospheres on foam titanium via a one-step hydrothermal method. Supported by an external electric field, a dual anti-fouling strategy involving in-situ aeration and dielectrophoresis was developed, resulting in a remarkably improved fouling resistance by 90 %.

Unlike prior methods focusing predominantly on developing super-wettability surfaces for passive anti-fouling, the strategy in this work leveraged the high salinity inherent in seawater to introduce in-situ aeration and dielectrophoresis forces to the filtration process. This innovative approach actively prevented oil droplets from contacting the filtration material surface, achieving effective active anti-fouling. The synthesized TiSe2/TF(TTF) demonstrated separation efficiencies of over 99 % for four different oil-in-water emulsions.

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