Fuat Topuz , Zainah A. AlDhawi , Mahmoud A. Abdulhamid
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引用次数: 0
摘要
石油泄漏和含油废水的排放对环境和人类健康造成了严重损害。有效清除溢油和分离油水混合物已成为其进入环境并暴露其对水生生态的潜在有害影响之前的关键步骤。在此背景下,本文生产了基于磺化聚醚醚酮(SPEEK)的纤维膜,并用于吸附原油及其衍生物。用不同时间的H2SO4处理PEEK,将SPEEK浓缩液电纺成无珠纳米纤维。与水和油(即原油、柴油和汽油)的接触角测量证明了膜的两亲性。根据所使用的原油样品和SPEEK的磺化程度(DoS),原油的吸附量为9 ~ 80 g g−1,而汽油和柴油的吸附量分别为3和13 g g−1。随着DoS的增加,纤维膜的油吸附能力下降,这是由于膜的亲水性增加。由于SPEEK膜的两亲性,它可以有效地去除海水上一层薄薄的油,这对于大多数疏水吸附剂来说都是一个挑战。SPEEK纤维膜可以作为低成本的解决方案用于溢油修复和油水分离。
Oil spills and the release of oily wastewater have caused serious damage to the environment and human health. Effective removal of oil spills and separation of oil/water mixtures have become a crucial step before they enter the environment and reveal their potentially harmful effects on aquatic ecology. In this context, herein, fibrous membranes based on sulfonated poly (ether-ether-ketone) (SPEEK) were produced and used for the adsorption of crude oils and their derivatives. PEEK was treated with H2SO4 at different times, and the concentrated solutions of the SPEEK were electrospun into bead-free nanofibers. The contact angle measurements with water and oils (i.e., crude oils, diesel, and gasoline) demonstrated the amphiphilic nature of the membranes. Depending on the crude oil sample used and the degree of sulfonation (DoS) of SPEEK, the crude oil sorption capacities ranged from 9 to 80 g g−1, while the adsorption capacities for gasoline and diesel were measured as 3 and 13 g g−1, respectively. As the DoS increased, the oil adsorption capacity of fibrous membranes declined due to the increased hydrophilicity of the membranes. Due to their amphiphilic nature, the SPEEK membranes could effectively remove even a thin layer of oil on seawater, a task that is challenging for most hydrophobic adsorbents. Fibrous SPEEK membranes could be employed as low-cost solutions for oil spill remediation and oil-in-water separation.