Abstract
In this study, magnetic steel slag biochar (MSSB) was synthesized from low-cost steel slag waste to investigate the effectiveness of steel slag biochar composite for NH4-N removal and magnetic properties in aqueous solution. The maximum adsorption capacity of NH4-N by MSSB was 4.366 mg/g according to the Langmuir model. The magnetic properties of MSSB indicated paramagnetic behavior and a saturation magnetic moment of 2.30 emu/g at 2 Tesla. The NH4-N adsorption process was well characterized by the pseudo-second order kinetic model and Temkin isotherm model. This study demonstrated the potential of magnetic biochar synthesized from steel slag waste for NH4-N removal in aqueous solution.
Highlights
These measurements confirmed the presence of Basic oxygen furnace (BOF) slag powder on the surface of magnetic steel slag biochar (MSSB) (Figure 3a)
3c); most of the ions (Fe, Ca, Al, Mg, and Mn) in MSSB seemed to derive from BOF slag powder components, and most C ions seemed to derive from pine sawdust
This study demonstrated the NH4 -N adsorption capacities and magnetic properties of biochars synthesized from low-cost steel slag waste and pine sawdust
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Basic oxygen furnace (BOF) slag mainly consists of SiO2 , CaO, Fe2 O3 , Al2 O3 , and some alkaline substances It has been used as lime, silicate, and iron fertilizer [5,6,7,8]. Magnetic biochars prepared by combining iron oxide and orange peel powder indicated efficient sorption capabilities to remove organic pollutants and phosphate from an aqueous solution [10]. This study was designed to investigate the effectiveness of magnetic slag biochar composite for NH4 -N removal from aqueous solution, and to determine the physicochemical characteristics of magnetic slag biochar such as adsorption capacities, volume of surface area, surface structure, and magnetic properties
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
