AVALIAÇÃO DO DESEMPENHO DE MEMBRANA DE OSMOSE INVERSA NA PRODUÇÃO DE ÁGUA PURA PARA USO LABORATORIAL: ESTUDO DE CASO DO IF GOIANO - CAMPUS RIO VERDE

Abstract

Pure water is used as a diluent in several applications, among which there is the production of standard solutions and use in laboratory tests. Therefore, it must follow a strict quality control standard. As pure water is not found in nature, its production depends on advanced technologies for removing ions, organic molecules of low molecular weight. In the literature, Reverse Osmosis membranes value standing out as a promising technology in pure water. Therefore, this work aims to evaluate the operational performance of the Reverse Osmosis Membrane Separation System in the production of ultrapure water for laboratory use. For this purpose, the water quality control was carried out by measuring parameters such as pH, conductivity, temperature, total dissolved solids, turbidity and UV 254nm absorbance, while the operational performance of the membrane was given based on the production of flux. permeate, transmembrane pressure and recovery, hydraulic permeability. The membrane achieved good efficiency in removing impurities as demonstrated in the rejection of 97.89% of the conductivity, considered, for UV 254nm absorbance, as Grade 2 according to the ultrapure water standards. Therefore, it is recommended to use this water for less demanding laboratory uses such as washing / rinsing glassware, media preparation, pH solutions and buffers.