http://www.iaeme.com/IJMET/index.asp 1547 editor@iaeme.com International Journal of Mechanical Engineering and Technology (IJMET) Volume 10, Issue 01, January 2019, pp. 1547-1554, Article ID: IJMET_10_01_157 Available online at http://www.iaeme.com/ijmet/issues.asp?JType=IJMET&VType=10&IType=01 ISSN Print: 0976-6340 and ISSN Online: 0976-6359 © IAEME Publication Scopus Indexed ZINC OXIDE NANOPARTICLES FOR WATER REMEDIATION IN AGRICULTURE D. Gnanasangeetha* Department of Chemistry, PSNA College of Engineering and Technology, Dindigul, Tamilnadu V. Prathipa Department of Chemistry, PSNA College of Engineering and Technology, Dindigul, Tamilnadu, India. *corresponding author ABSTRACT Zinc oxide nanoparticle embedded in activated silica (ZnO-NPs-AS-Ai) as adsorbent with nano cube shape were synthesized from leaf extract of Acalypha indica via green method. Adsorbent were characterized using SEM, XRD EDAX and FT-IR. Exploration shows that the adsorbent is nano cube shape with an average size of 80 nm with elemental composition of zinc, oxygen and silica with Secondary amine at 2357 cm -1 and Olefinic compound at 1600-1450 cm -1 . The percentage of As (III) removal was very significant at 0.03ppm with arsenic removal of 79.47 to 96.19% with 2g adsorbent dosage at a pH of 6 with a contact time of 60 min and at an agitation speed of 300rpm. Results showed that the adsorption process by ZnO-NPs-AS-Ai is monolayer chemisorptions. This research uses existing principles of green chemistry to combat agricultural land contaminated with arsenic (III) by bioremediation of water to prevent biological magnification. Key Words: Activated Silica, Adsorbate, Adsorbent, Isotherm and Kinetics, Zinc oxide Nanoparticles Cite this Article: D. Gnanasangeetha and V. Prathipa, Zinc Oxide Nanoparticles for Water Remediation in Agriculture, International Journal of Mechanical Engineering and Technology, 10(01), 2019, pp.1547–1554 http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=10&Type=01 1. INTRODUCTION Green synthesis of nanoparticle for water remediation using plants is in the exploitation by researchers. Nanotechnology applications are highly suitable for biological molecules, because of their exclusive properties. Although chemical method of synthesis requires short period of time for synthesis of large quantity of nanoparticles, this method requires capping agents for size stabilization of the nanoparticles. Chemicals used for nanoparticles synthesis and stabilization are toxic and lead to non-ecofriendly by products [1]. Green nanotechnology has goals to produce nanomaterials and products without harming the environment or human health and produce nano