pps proceeding - Abstract Preview
pps proceeding
Symposium: S09 - Elastomers and Foams
Oral Presentation
 
 

Superhydrophobic and Environmentally Friendly Coated Open-Cell Foams for Continuous Removal of Oil Contaminants from Water

Abidli Abdelnasser (1)*, Huang Yifeng (1), Karamikamkar Solmaz (1), Asgari Mohammad (1), Park Chul B. (1)

(1) University of Toronto - Ontario - Canada

Oil spill accidents including both major and small events could lead to massive socioeconomic and environmental costs. Therefore, developing efficient water remediation technique is highly needed to answer the menace caused by industrial oil spills and oily wastewater. Sorption is amongst the most effective methods to collect oil spills and solvent leakages from water. However, the currently used oil sorbents are still suffering from toxicity, high cost, tedious and lengthy preparation procedures, low stability and poor recyclability. These shortcomings hinder further application of these materials at large scale in order to encounter major oil spills. This situation stimulated great research efforts with the increasing demand for superhydrophobic materials, which can be used for separating oil and water efficiently. Herein, we are reporting a green and environmentally benign pathway for the development of superhydrophobic and superoleophilic materials based on commercial open-cell foams using non toxic precursors. Such strategy, will allow an easy scalability of these materials while avoiding any prior or post secondary pollution. Furthermore, it is an extremely simple and low-cost strategy to produce highly stable and practical oil sorbents. Experimental results show that the modified open-cell foams could not only rapidly uptake residual oil either on the water surface or underwater, but also perform selectively under continuous vacuum-assisted conditions. Superhydrophobic behavior is the key factor, where water is repelled completely and oil is selectivity penetrating through the open-cell foam network and flow along the channels into the oil collector. The prepared sorbents showed excellent separation efficiency for a wide range of oil and organic solvents. Also, the foams maintained its performance over a high number of cycles showing excellent reusability, recyclability and hydrophobicity stability.