Magnetic separation technology as an efficient, fast and economical
method for separating magnetic materials has been widely
used in textile, biology, and environmental protection [24–26].
The adsorbents combining magnetic separation technology with
adsorption process have been widely used in environmental purification
[27–29]. The main advantage of this technology is that it can
dispose a mass of wastewater in a very short period of time and
produce no contaminants.