![]() | Only 14 pages are availabe for public view |
Abstract Herein a study the effect of irrigation with treated pesticides contaminated water using ZnO nanoparticles (NPs) on soil and plant properties. First, ZnO NPs were synthesized via solvothermal method with an average diameter about 26.6 nm, and then it is doped with silver by a photo-reduction method using silver nitrate and ethylene glycol in day light. The obtained samples were characterized by XRD, TEM, SEM, SEM/EDX, UV-VIS spectrum and FTIR. Secondly, parameters affect the photocatalytic activity of ZnO NPs like ZnO concentration, pesticide concentration, pH of solution, temperature, and also Ag doping. The optimum conditions for the maximum degradation was 50 mg ZnO /L, pesticide initial concentration (5.5 and 16.5) mg/L, pH (11, 8) for imidacloprid and carbofuran respectively, and the degradation rate of both pesticides increases by increasing the temperature. Ag doping 5% (w: w) enhances the photocatalytic activity of ZnO NPs. Irrigation with treated pesticides contaminated water using ZnO NPs increases EC, soluble cations and anions in soil, and it may enhance N, P, and K uptake of plant in compared with untreated treatments, and it also enhances the vegetative growth parameters (plant height, fresh wet, dry weight and leaf area). Antibacterial activity of ZnO NPs is enhanced by doping with Ag. |