IJEP 43(10): 929-935 : Vol. 43 Issue. 10 (October 2023)
1. Karpagam Academy of Higher Education, Department of Biotechnology, Coimbatore, Tamil Nadu – 641 021, India
2. Akshaya College of Engineering and Technology, Department of Science and Humanities, Coimbatore, Tamil Nadu – 642 109, India
Abstract
Plant-mediated nanoparticle synthesis is an eco-friendly method designated to reduce environmental toxicity. This study reports the effectiveness of silver nanoparticles towards wastewater treatment for the first time, using leaf extract from Azadirachta indica. We employed swift and simple method for synthesizing silver nanoparticles (AgNPs) from aqueous leaf extraction of A. indica, which acts as reducing agent as well as capping agent. The compounds responsible for reduction of Ag ions and the functional groups present in plant extract were investigated by UV-spectrum and FTIR analyses. Particle size analysis showed that the synthesized NPs exhibit a mean particle size of 46.081 nm under dynamic light scattering and mean range of –1.6 mV zeta potential. The synthesized AgNPs were tested for adsorption studies onto wastewater and the removal efficiency was derived based on optimized pH, dosage and time. Overall, our results indicated a worthy absorption activity and removal efficiency on wastewater. Our results demonstrated the capability of silver nanoparticles with distinguishing properties that were unexplored previously. Thus, the synthesized AgNPs presented its potential application in wastewater treatment and management towards resolving one of the existing problems on the earth at present.
Keywords
Azadirachta indica, Silver nanoparticles characterization, Adsorption studies, Wastewater treatment
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