Abstract
Chromium is the heavy metal which existing in the effluents cause extensive discomfort to the environmental components. Bone waste is widely generated in food processing industries and restaurants. It is now used by switching into activated carbon. By co-precipitation procedure, the activated carbon is coated with a nano adsorbent. The Fe3O4-BAC adsorbent potential was established in this study via several batch tests. The adsorbing adverts had super magnetic behavior, and the magnetization value was 22 emu/g. The SEM imaging of the Fe3O4-BAC shows an improved morphology of 100–446 nm, and the nanoparticles were monodispersed. The present investigation also delves into the study of system parameters on the removal of metal ions. Optimal adsorption has been found at the acidic pH at the contact time of 60min for the adsorbent amount of 5 g/L. Maximum capacity of adsorption by nano adsorbent was 27.86 mg/g. Thermodynamic and isotherm tests have established the process viability. In addition, the kinetic studies establish the inclination of the studied Fe3O4-BAC towards pseudo-first order models. Hence, Fe3O4-BAC could be potential adsorbent to remove chromium from an aqueous solution.
•Magnetic nanoparticle (Fe3O4) impregnated onto an animal bone waste.•This prepared Fe3O4-BAC may separate Cr (VI) from effluents quickly.•Adsorbent shows super magnetic behavior, and the magnetization value was 22 emu/g.•Freundlich isotherm and pseudo-first order model was found to be better suited.•Cr (VI) ion maximum adsorption capacity by Fe3O4-BAC was found to be 27.86 mg/g.