摘要
采用化学共沉淀法制备Fe_3O_4纳米颗粒,并对其组成和形貌进行了表征。结果表明:Fe_3O_4颗粒近似球形,粒径20 nm,呈立方晶型。在磁场作用下,200 mg/L的Fe_3O_4与150 mg/L的阳离子破乳剂LY复配使用,使模拟含油污水中的油由413.4 mg/L降至27.4 mg/L,除油率达到93.3%。Zeta电位测试表明,Fe_3O_4与LY复配可中和油滴表面电荷。Fe_3O_4用乙醇、去离子水超声水洗再生,重复使用3次,其除油率仍在60%以上。
Fe_3O_4nanoparticles have been prepared by chemical co-precipitation method,and the composition and morphology of Fe_3O_4 nanoparticles characterized. The results show that Fe_3O_4 particles look like spheres approximately,whose grain diameter is 20 nm,in cubic crystal shape. Under magnetic field effect,200 mg/L of Fe_3O_4 and 150mg/L of cationic demulsifier LY are used in combination,so as to make the oil in simulated oil-bearing wastewater be reduced from 413.4 mg/L to 27.4 mg/L,and the oil removing rate reaches 93.3%. Zeta potential test shows that the composition of Fe_3O_4 and LY can neutralize the electric charges on the surfaces of oil drops. Fe_3O_4 can be regenerated with ethanol and deionized water under ultrasonic irradiation. Its oil removing rate is still above 60%,after having been used more than three times repeatedly.
出处
《工业水处理》
CAS
CSCD
北大核心
2016年第7期82-85,共4页
Industrial Water Treatment
