Iron oxide extracted from mill scale waste and applied in wastewater treatment.
What is it about?
Highly crystalline iron oxide particles were extracted from mill scale through Magnetic Separation Technique and was found to be formed highly amorphous iron oxide nanoparticles via high energy ball milling technique at various milling time of 4, 6 and 12 hours. As the milling time increased to 4, 6 and 12 hours, the size of iron oxide nanoparticles were decreased to 57.02, 53.76 and 33.83 nm respectively. Small size of iron oxide nanoparticles provided large surface area per volume and exhibited high efficiency adsorption of iron oxide nanoparticles. Iron oxide nanoparticles were modified with CTAB to reduce aggregation and allow interaction between the adsorbent and particles in the wastewater. Adsorption efficiency of iron oxide nanoparticles modified with CTAB achieved above 99 % and was found to be affected by the size of iron oxide nanoparticles, having the optimum adsorption of 99.93% for sample having particle size of 53.76 nm.
Why is it important?
Mill scale waste has become great potential of land pollution. By, extracting iron oxide from mill scale waste and recycled in wastewater treatment could reduce the possibility of land pollution. Extremely small size of iron oxide nanoparticles provide large surface area and high active site that lead to high performance of adsorption of iron oxide in wastewater treatment. Magnetic properties of iron oxide reduce the duration process for wastewater treatment and easily separated from the wastewater by applying external magnetic field.
The following have contributed to this page: azdiya suhada abdul rahim arifin and Abdul Halim Abdullah