石油工业产生的采出水(PW),在开采石油和天然气的过程中,对人类健康和水生生物有有害影响,由于其复杂的性质。因此,有必要在将其排放到环境中之前对其进行处理,以避免严重的环境问题。在这项研究中,使用负载有离子液体(IL)的粘土-藻酸盐珠研究了PW的油吸附,作为吸附材料。几个工艺参数的影响,例如油的初始浓度,接触时间,pH值,和温度对珠子去除效率的影响,进行了分析和优化。不同的表征方法,如傅里叶变换红外分光光度计(FTIR),扫描电子显微镜(SEM),能量色散X射线(EDX),和热重分析(TGA),用于研究表面形态,化学键结构和官能团,和基于ILs的珠子的热稳定性。结果表明,在最佳条件下(初始油浓度为600ppm,接触时间70分钟,10pH值,并且在室温下),吸附容量为431mg/g。FTIR分析证实了油与珠的成功的化学键相互作用。SEM分析验证了珠子具有多孔和粗糙的表面,这适用于将油吸附到珠子表面。TGA分析提供了粘土-藻酸盐-IL的热降解曲线。将吸附过程中使用的珠子再生并用于多达四个循环。
Produced water (PW) generated from the petroleum industry, during the extraction of oil and gas, has harmful impacts on human health and aquatic life, due to its complex nature. Therefore, it is necessary to treat it before discharging it into the environment in order to avoid serious environmental concerns. In this research, oil adsorption from PW was investigated using clay-alginate beads loaded with ionic liquids (ILs), as the adsorbent material. The effects of several process parameters, such as the initial concentration of oil, contact time, pH, and temperature on the removal efficiency of the beads, were analyzed and optimized. Different characterization methods, such as the Fourier transform infrared spectrophotometer (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and thermal gravimetric analysis (TGA), were used to investigate the surface morphology, the chemical bond structure and functional group, and the thermal stability of the ILs-based beads. The results revealed that the clay-alginate-ILs beads indicated a removal efficiency of 71.8% at the optimum conditions (600 ppm initial oil concentration, 70 min contact time, 10 pH, and at room temperature) with an adsorption capacity of 431 mg/g. The FTIR analysis confirmed the successful chemical bond interaction of the oil with the beads. The SEM analysis verified that the beads have a porous and rough surface, which is appropriate for the adsorption of oil onto the bead\'s surface. The TGA analysis provides the thermal degradation profile for the clay-alginate-ILs. The beads used in the adsorption process were regenerated and used for up to four cycles.