碳化三聚氰胺海绵制备及其光热重油吸附研究

在氩气气氛下,经高温煅烧三聚氰胺海绵(MS),制备了碳化三聚氰胺海绵(HMS),利用SEM、XPS、FI-IR对HMS的碳化情况进行分析,测定了海绵碳化前后的密度、亲水性、孔隙率、吸收光谱及压缩回弹性能.结果表明,MS部分碳化形成HMS,疏水性增强且亲油性不变,孔隙率略有降低,具有优异的吸光性能及机械性能.HMS海绵对轻质油品和重油吸附实验的结果显示:HMS海绵对轻质油品饱和吸附体积为92.20cm³/g;在一个太阳光(1kW/m²)照射下,HMS海绵温度快速升高,有效降低底面接触的重油粘度并加快吸附重油速度,吸附量高达99.1g/g左右;利用HMS海绵重复对重油进行10次吸附-挤压脱附,发现其对重油的饱和吸附量可保持在81.00 g/g以上.这些特性使得HMS海绵成为一种有前景的高效节能、可重复利用的石油泄漏吸附剂.

Preparation of carbonized melamine sponge for photo assisted heavy oil adsorption

Carbonized melamine sponge (HMS) was prepared by calcining of melamine sponge (MS) in argon atmosphere. The carbonization effect of HMS was analyzed by SEM, XPS and FI-IR. The density, hydrophilicity, porosity, absorption spectra and compression resilience of the sponge before and after carbonization were measured. The results showed that MS was partly carbonized into HMS, with the hydrophobicity enhanced, the lipophilicity unchanged, and the porosity slightly reduced. HMS exhibited excellent light absorption and mechanical properties. The saturated adsorption volume of HMS sponge on light oil was 92.20cm³/g. Under 1sun irradiation (1kW/m²), the temperature of HMS sponge rose rapidly, which effectively reduced the viscosity of heavy oil in contact with its bottom surface and sped up the adsorption rate of heavy oil, with the adsorption capacity reaching about 99.1g/g. When HMS sponge repeatedly adsorbed heavy oil for 10times, its saturated adsorption capacity on heavy oil could maintain at higher than 81.00g/g. These characteristics made HMS sponge a promising high-efficiency, energy-saving and reusable oil spill adsorbent.