Pollution and Global Warming

Fabrication of benevolent zinc oxide nanoparticle entrenched on activated silica (ZnO-NPs-AS-Cs) without calcination by green synthesis method using aqueous leaf extract of Corriandrum sativum. The method involved the use of zinc acetate dihydrate (Zn (CH3 COO)2. 2H2O) and sodium hydroxide (NaOH) as a precursor and phytoconstituents played manifold roles as promoter, stabilizer and template for synthesis of zinc oxide nanoparticle. Adsorption behavior of benign adsorbents was applied to Freundlich, Langmuir, Tempkin, and BET isotherm which afford the surface properties of the adsorbent and its affinity for adsorbate. Data correctly fits Langmuir isotherm than Freundlich, Tempkin and BET isotherm proving monolayer and homogenous surface of adsorption with R2=0.968. Artificial neural network supports the linearity of the kinetic plots fitting pseudo-second order model with R2=0.732 obeying chemisorption.