In this study, several magnetic flocculants were synthesized by using polyether flocculants. The properties of the as-prepared products were characterized by performing a series of analysis. Further, oily wastewater treatment experiments were performed, and the effects of ultrasonic time, temperature, size of products, and type of polyether on the treatment efficiency were investigated. It was revealed that temperature played a major role, and more than 4 min of ultrasonic time was needed to achieve greater than 80% of oil removal. The magnetic flocculants having smaller size displayed better flocculation performance. Both magnetic flocculants with linear polyether coating and branch polyether coating had good flocculation performance.
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Fang et al. (2016) studied this question.
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