摘要：

采用共沉淀法合成出Fe₃O₄/氧化石墨烯(GO)纳米复合材料,然后通过静电作用将聚二烯丙基二甲基氯化铵(PDDA)修饰在Fe₃O₄/GO表面,制备出一种新型除油剂PDDA/Fe₃O₄/GO,并考察了Fe₃O₄与GO配比、pH、温度、反应时间和除油剂投加量等因素对除油效果的影响.实验结果表明院PDDA/Fe₃O₄/GO不仅除油性能良好,而且除油速度快;在室温20℃、反应时间10min、投加质量浓度为300mg/L的条件下,可将油田污水中的油降至50mg/L以下.该除油剂具有制备方法简单、除油速度快、易于操作、可重复利用等特点,为油田污水处理提供了一种新的研究思路.

关键词: 石墨烯, 四氧化三铁, 聚二烯丙基二甲基氯化铵, 油田污水, 除油剂

Abstract:

Nano synthetic material Fe₃O₄/graphene oxide(GO)has been prepared by chemical co-precipitation method. Then,through electrostatic action,a kind of new typed oil removing agent PDDA/Fe₃O₄/GO is prepared by dressing PDDA on Fe₃O₄/GO surface,and the ratio of Fe₃O₄ and GO is investigated. The influences of the factors, such as pH,temperature,reaction time,dosage of oil removing agent,etc. on oil removing effect are investigated, too. The results show that PDDA/Fe₃O₄/GO has not only good oil removing effect,but also high oil removing speed. Under the following conditions: reaction temperature 20℃,reaction time 10 min,and dosage mass concentration 300 mg/L,the oil in oilfield wastewater can be dropped to 50 mg/L. The oil removing agent is characterized by simple method,high oil removing speed,easy operation,repeatable utilization,etc.,providing a new train of thought for oilfield wastewater treatment.

Key words: graphene, Fe₃O₄, poly dimethyl diallyl ammoniumchloride, oilfield wastewater, oil removal agent

中图分类号: 

• TE992