Preparation and characterization of polysulfone-polyurethane membranes for recovery of simulated wastewater from industrial textile processes
| Autor: | M A Zeni, N J Bogoni, Jocelei Duarte, Cintia Marangoni, C R Schut, Janaina da Silva Crespo, J Z Merck, Marcelo Giovanela, C M Menezes |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Textile Polymers 0208 environmental biotechnology Polyurethanes 02 engineering and technology 010501 environmental sciences Sodium Chloride Wastewater 01 natural sciences chemistry.chemical_compound Environmental Chemistry Polysulfone Sulfones Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Polyurethane Treated water business.industry Textiles Water Membranes Artificial General Medicine Pulp and paper industry 020801 environmental engineering Membrane chemistry Pervaporation business |
| Zdroj: | Environmental technology. 43(14) |
| ISSN: | 1479-487X |
| Popis: | Techniques using membranes for the treatment of wastewaters usually promote higher quality of treated water when compared to other processes. Among them, pervaporation has advantages in terms of selectivity in addition to low working pressure, which can prevent clogging problems. Polysulfone and polyurethane have complementary characteristics and are interesting in the context of membranes for industrial applications. In this sense, the aim of this work was to prepare and characterize polysulfone/polyurethane-based membranes and tested them with a simulated wastewater containing the reactive black dye and sodium chloride by pervaporation. In their manufacture, thermal treatment (at 60°C) and photo-radiation treatment (using ultraviolet light) were also applied. The characterizations were performed using different analytical tools. In general, it was possible to verify that all membranes have a dense layer. The thermal analysis allowed to define that the indicated working temperature is below 50°C. With respect to the simulated wastewater treatment, all membranes reached 100% selectivity. Concerning the saline solution, the mean selectivity was around 98.5%. Moreover, the permeate flow values were within the range presented by commercial membranes ranging from 1.6 to 2.4 kg m |
| Databáze: | OpenAIRE |
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