Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
Environ Sci Pollut Res Int. 2020 Mar;27(8):8071-8081. doi: 10.1007/s11356-019-07113-7. Epub 2020 Jan 2.
With the frequent occurrence of oil spill accidents and the continuous discharge of oily water during oil production and transportation, effective oil removal from environmental water by adsorption still faces severe challenges. Here, a novel absorbent hydroxofluorographene-coated melamine foam, namely G(OH)F@MF, with high affinity to oils was fabricated via stepwise assembly. The G(OH)F@MF absorbent achieved effective removal of various oils within 1 min with relatively high adsorption capacities for petrol (89.34 g/g), lubricating oil (89.60 g/g), and peanut oil (104.79 g/g). Furthermore, it could be regenerated by simply squeezing and reused for more than 10 times with an adsorption capacity exceeding 37.12 g/g. In addition, the results indicated that the G(OH)F@MF absorbent was suitable for oil cleanup at a wide range of pH values (4-12) and temperatures (5-45 °C). The adsorption performance of the material was stable in the presence of natural organic matter and even in different water environments. This study can provide a novel sorbent and method for the green, rapid, recyclable, and stable removal of oils from environmental water.
随着溢油事故的频繁发生和石油生产运输过程中含油污水的不断排放，通过吸附法从环境水中有效去除油类仍面临严峻挑战。在这里，通过分步组装制备了一种对油类具有高亲和力的新型吸附剂——羟基氟化石墨烯包覆三聚氰胺泡沫（G(OH)F@MF）。G(OH)F@MF 吸附剂在 1 分钟内即可有效去除各种油类，对汽油（89.34 g/g）、润滑油（89.60 g/g）和花生油（104.79 g/g）的吸附容量较高。此外，通过简单挤压即可再生，可重复使用 10 次以上，吸附容量超过 37.12 g/g。此外，结果表明，G(OH)F@MF 吸附剂适用于 pH 值（4-12）和温度（5-45°C）范围较宽的油污清理。该材料在存在天然有机物甚至在不同水环境中的吸附性能稳定。本研究可为从环境水中绿色、快速、可回收和稳定去除油类提供一种新型吸附剂和方法。
