ZINC OXIDE NANOPARTICLES FOR WATER REMEDIATION IN AGRICULTURE

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