Algal synthesized MnO2 nanoparticles Embedded in chitosan Beads for optimized adsorption treatment of Nitrate – contaminated Mine water

Abstract

Worldwide, industries and their locations are a significant source of water pollution, with nitrates having the most harmful impacts. Nitrate removal from water requires productive technique to solve this issue. Chitosan beads, a non-toxic, biocompatible, and biodegradable polymer have demonstrated significant promise in a variety of applications, such as the elimination of various salt ions and heavy metals from water. In this work, algal synthesized Manganese dioxide nanoparticles were created which were then embedded in chitosan to create beads. For nitrate adsorption from mine water, the effectiveness of Manganese dioxide embedded chitosan beads in a batch system has been investigated. Physiochemical properties of MnO2 nanoparticles were characterized through UV vis spectrophotometry, XRD, SEM, FTIR, and EDX. Multiple factors influencing the adsorption attitude of hybrid beads such as adsorbent dosage, initial concentration, pH, and the interaction time of Nitrate ions were measured. In this study, pseudo-second-order kinetics best suit the experimental data. The results indicated that beads of Manganese dioxide-impregnated chitosan beads showcase efficient performance and benefits in Nitrate removal from the mine water, providing a sustainable, cost-effective, and eco-friendly solution.