Adsorption of phenol from aqueous solution using graphene nano-particles.

Environmental pollution due to oil products and their derivatives, industrial waste, and the waste of pharmaceutical factories is a major problem; therefore, it is necessary to find appropriate solutions. Adsorption is one of the main ways to remove most contaminants. The most prevalent organic contaminants in many industrial wastewater effluents are phenolic compounds (PC). In order to meet legal discharge criteria and assure the achievement of sustainable development goals, the possible negative health and environmental effects of phenol must be removed from wastewater. This research was conducted to study the feasibility of using graphene Nanoparticles. Therefore, adsorbent doses of 1 to 8 g, initial phenol concentrations ranging from 10 to 100 (mg/L), pH values in the range of 3 to 8, and time ranges ranging from 0 to 210 (min) were studied in order to examine the effects of various parameters on the removal of phenol from aqueous solution by graphene Nano-particle (GNP). The Freundlich and Langmuir isotherm models were used to match the equilibrium data for the adsorption system. In order to track the adsorption process, two simplified kinetic models with pseudo-first-order and pseudo-second-order equations were chosen. [ABSTRACT FROM AUTHOR]