Removal of direct Yellow 27 dye using animal fat and vegetable oil-based surfactant
| Autor: | A. A. Dantas Neto, Humberto Neves Maia de Oliveira, T. N. Castro Dantas, R.P.F. Melo, M. C. P. A. Moura, E. L. Barros Neto |
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| Rok vydání: | 2015 |
| Předmět: |
Direct Yellow
Animal fat Aqueous solution Chromatography Chemistry Precipitation (chemistry) Process Chemistry and Technology Sodium chemistry.chemical_element Human decontamination Electrolyte Removal efficiency Textile wastewater treatment Vegetable oil Pulmonary surfactant Chemical engineering Sodium soap Safety Risk Reliability and Quality Waste Management and Disposal Biotechnology |
| Zdroj: | Repositório Institucional da UFRN Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
| ISSN: | 2214-7144 |
| Popis: | The textile industry uses large amounts of water in its processes. Such water ends up contaminated by a number of substances, including dyes, creating an environmental challenge. The present study aims at removing dye by applying the precipitation process using a sodium soap (anionic surfactant), derived from animal fat and vegetable oil, promoting dye decontamination using biodegradable materials. Sodium soap, in the presence of calcium ions, forms another insoluble surfactant. This new surfactant, under stirring, aggregates and forms hydrophobic flocs that are capable of adsorbing organic materials dissolved in aqueous solutions, including dyes. Dye removal was assessed considering the influence of initial surfactant concentration, temperature, pH, presence of electrolyte, equilibrium time, and stirring rate. Dye removal efficiency reached 97.6%. |
| Databáze: | OpenAIRE |
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