Yang Ying, Zhu Mingzhao, Jin Kechun, Wang Yancheng, Wang Jiangbo, Zhang Zongtan, Shen Liwei, Feng Xuening, Mi Yuanzhu
School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China.
The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China.
Environ Sci Pollut Res Int. 2022 Dec;29(56):85525-85536. doi: 10.1007/s11356-022-21860-0. Epub 2022 Jul 7.
In current work, a TB-EDA demulsifier for disposing oily wastewater was prepared using thorn fir bark (TB) as starting materials via a hydrothermal and solvent-free amination route. Field emission scanning electron microscope (FE-SEM), energy dispersive X-ray spectrometer (EDS), and Fourier transform infrared spectroscope (FT-IR) were employed to characterize the TB-EDA demulsifier. Three-phase contact angle (CA), interfacial activity, formation of interfacial film (FIF), coalescence time of droplets (CTD), dynamic interfacial tension (IFT), and Zeta potential were carried out to study the possible demulsification mechanism. Bottle test was performed to investigate the effect of the TB-EDA dosage, salinity, and pH value on the demulsification performance at room temperature. Light transmittance (D) and oil removal rate (D) of separated water were 94.7% and 97.2%, respectively, with 100 mg/L of TB-EDA demulsifier in oily wastewater at room temperature. In addition, the TB-EDA demulsifier has an excellent salt tolerance even at the salinity of 50,000 mg/L. The corresponding D and D could reach 99.8% and 99.9%, respectively.
在当前工作中，以刺 fir 树皮（TB）为原料，通过水热和无溶剂胺化路线制备了一种用于处理含油废水的 TB - EDA 破乳剂。采用场发射扫描电子显微镜（FE - SEM）、能量色散 X 射线光谱仪（EDS）和傅里叶变换红外光谱仪（FT - IR）对 TB - EDA 破乳剂进行表征。通过三相接触角（CA）、界面活性、界面膜形成（FIF）、液滴聚并时间（CTD）、动态界面张力（IFT）和 Zeta 电位来研究可能的破乳机理。进行瓶试以研究 TB - EDA 用量、盐度和 pH 值对室温下破乳性能的影响。在室温下，含油废水中加入 100 mg/L 的 TB - EDA 破乳剂时，分离水的透光率（D）和除油率（D）分别为 94.7%和 97.2%。此外，TB - EDA 破乳剂即使在盐度为 50000 mg/L 时也具有优异的耐盐性。相应的 D 和 D 分别可达 99.8%和 99.9%。
