Oil sorbents with high sorption capacity, oil/water selectivity and reusability for oil spill cleanup.

Marine pollution bulletin

PubMedID: 24856092

Wu D, Fang L, Qin Y, Wu W, Mao C, Zhu H. Oil sorbents with high sorption capacity, oil/water selectivity and reusability for oil spill cleanup. Mar Pollut Bull. 2014;.
A sorbent for oil spill cleanup was prepared through a novel strategy by treating polyurethane sponges with silica sol and gasoline successively. The oil sorption capacity, oil/water selectivity, reusability and sorption mechanism of prepared sorbent were studied. The results showed that the prepared sorbent exhibited high sorption capacity and excellent oil/water selectivity. 1g of the prepared sorbent could adsorb more than 100g of motor oil, while it only picks up less than 0.1g of water from an oil-water interface under both static and dynamic conditions. More than 70% of the sorption capacity remained after 15 successive sorption-squeezing cycles, which suggests an extraordinary high reusability. The prepared sorbent is a better alternative of the commercial polypropylene sorbent which are being used nowadays.