Abstract

A magnetic demulsifier, denoted M-G_n-PAMAM (n = 1, 2, 3), was synthesized by reacting polyamidoamine (PAMAM) dendrimers with Fe₃O₄@SiO₂. The characteristics of magnetic nano-polymer were investigated via using XRD analysis, FT-IR, TEM, and VSM methods. The as-prepared M-G_n-PAMAM was highly effective at removing oil from wastewater produced from ASP flooding, with a maximum oil removal rate of 94% at 60 °C. Furthermore, the regeneration experiments illustrated that M-G_n-PAMAM could be readily recovered by an external magnetic field and it could be recycled up to 9 times without a significant loss in demulsification efficiency. In conclusion, the magnetic demulsifier synthesized in this study could be a promising nanomaterial for use in emulsified oil-water separation.

摘要

通过使聚酰胺胺 (PAMAM) 树枝状聚合物与 Fe ₃ O ₄ @SiO ₂反应合成了一种磁性破乳剂，表示为 MG _n -PAMAM (n = 1, 2, 3) 。通过使用 XRD 分析、FT-IR、TEM 和 VSM 方法研究了磁性纳米聚合物的特性。所制备的 MG _n -PAMAM 可高效去除三元复合驱废水中的石油，在 60 °C 时的最大石油去除率为 94%。此外，再生实验表明 MG _n-PAMAM 可以很容易地通过外部磁场回收，并且可以循环使用多达 9 次而不会显着降低破乳效率。总之，本研究合成的磁性破乳剂可能是一种很有前途的纳米材料，可用于乳化油水分离。