Avaliação dos fatores que afetam a adsorção de fósforo em nanomateriais tridimensionais baseados em grafeno

Abstract

Water is the most important natural resource and one of the most available on the planet. Indispensable for any human activity, it is used for consumption and for profit. Over time, man began to intensively exploit this resource and, consequently, triggered pollution problems in the water bodies. Eutrophication is a process of accumulation of nutrient-rich organic matter in water that causes increased amounts of algae and plants, using water used for consumption and harmful to aquatic organisms. This process occurs mainly due to the increase of phosphorus and nitrogen content in water. From this scenario, the present work developed in three-dimensional graphenebased nano materials, synthesized from chemical oxidation of graphite, through environmentally sustainable and low-cost synthetic routes, aiming the phosphorus adsorption by material and to evaluate the factors. that can influence your results, such as ionic strength, temperature and pH. The materials include good and some cases even better efficiency compared to the literature, or the most efficient material can remove up to 98% of Phosphate present in water, plus all factors that affect adsorption such as pH or better, the performance was at values 7 and 12, with the addition of NaCl, the ionic strength improving efficiency up to 99%, and the lowest temperature with adsorption economy, in a real environment test, the materials obtained once remove up to 90% of the nutrient present in water. The efficiency of these materials is a major step towards environmental problems such as eutrophication due to their applicability and high removability observed in the materials.