Amplifying Absorptive Elimination of Alizarin Red S Dye from Contaminated Water Through Chemically Improved Arachis Hypogeal By-Product and Optimizing Thermodynamics, Kinetics and Adsorption Isotherm

This study introduced two effective and affordable organic and metal based hydrochars named ASB and ASB/LaCF, in the reservoir of eco-friendly and environmental friendly substances. The shell of Arachis hypogeal was utilized to synthesize organic biochar (ASB) while combination of three metal salts viz. Lanthanum nitrate (La(NO3).6H2O), ferric nitrate (Fe(NO3).6H2O) and cobalt nitrate (CoNo3).6H2O i.e. (LaCF) was incorporated in the bulk of biochar (ASB) to obtain nanocomposite (ASB/LaCF). FTIR study reveal the nature of functional groups available in the organic moiety after formation of biochar as well as nanocomposite. SEM and XRD reveal the amorphous nature of ASB and slight crystalline behaviour of ASB/LaCF. VSM analysis describe the magnetic property and magnetization value for ASB/LaCF was observed as 0.354 emu/g. BET analysis identified pore size of 3.2 nm and 7.5 nm for ASB and ASB/LaCF respectively while surface area for ASB/LaCF was 52.25 m2/g. TGA and DSC graphs throw light on thermal stability of the nanocomposite where 50% weight loss was observed till 200ºC and upto 700 ºC, no change in graph was observed. Similar pattern was identified in DSC curve. Thermodynamic and kinetic parameters were analysed through adsorption of Alizarin red S dye as a pollutant and the results were amazing as the synthesized ASB and ASB/LaCF were able to remove the dissolved dye from the water sample by changing different reaction conditions like Temperature, concentration, pH and time etc.