Treatment of Effluents from the Textile Industry through Polyethersulfone Membranes

Abstract

Membranes have been widely used in the treatment of industrial effluents. However, there are still some limitations in the separation and permeability with respect to these effluents. Therefore, this study investigated the addition of 1% and 5% of an inorganic filler (clay) in polyethersulfone polymer membranes. By contact angle analysis, it was observed that the clay influenced the hydrophilicity of the membrane. The presence of the clay had an important role in the morphology of the membrane, modifying and favoring a greater quantity of pores and macropores for the porous support. For the tensile test, it was seen that the high clay content decreased the membranes properties. The flow tests, having a flow stabilized around 300 L/h·m 2 for membranes containing clay, evidenced the efficiency of the membrane for the treatment of indigo blue, representing a 200% increase in relation to polyethersulfone membrane. The membrane containing 1% of clay presented the highest level of rejection to the effluent, around 94.0%. Thus, it was evident that the addition of montmorillonite clay modified the membrane structure contributing to a higher selectivity and permeability.

Síntese de membranas de fibra oca de Polisulfona/Alumina para o tratamento de água na presença do corante índigo blue

“…Ou seja, o fenômeno da incrustação pode ter ocorrido principalmente nas membranas com alumina. Isso pode ser percebido pois a membrana pura obtém um fluxo maior e as membranas com alumina obtiveram fluxos menores principalmente a membrana com 5% de alumina (Barbosa Ferreira et al, 2019). No entanto, mesmo com um fluxo menor estas membranas com alumina mostraram melhorias em sua eficiência, no que se refere à quantidade de partículas do corante retidas.…”

Optimization of Process Parameters for Obtaining Polyethersulfone/Additives Membranes

“…This may be related to the possibility that the high polymer concentration may obstruct the membrane pores, compromising the passage of the water. These phenomena may have occurred due to the fact that the high polymer concentration contributes to the formation of a larger dense membrane layer, as observed by SEM, which dramatically increases the water permeation resistance [35,36].…”

Application of the novel pH‐catalytic‐magnetic tri‐functionalities augmented bead for removal of organic dye pollutants

“…The objective of this paper was to incorporate magnetite (Fe 3 O 4 ) nanoparticles within polyethersulfone (PES) beads. PES was used as base polymer due to its high mechanical property, good resistance to temperature, chemical, thermal aging, and pH 11,12 . The effect of PES polymer concentration was investigated to determine the suitable polymer concentration to form a good bead structure with high porosity.…”