UTILIZATION OF CATIONIC HEMICELLULOSES, OBTAINED FROM THE CORN HUSK, IN ASSOCIATION WITH TANNIN FOR USE IN WASTEWATER TREATMENT OF INDUSTRIAL LAUNDRY
| Autor: | Talita Ferreira de Rezende Costa, Guimes Rodrigues Filho, Sheila Cristina Canobre, Fúlvio Rafael Bento de Souza, F. A. Amaral, José Pedro Thompson Junior, Rosana Maria Nascimento de Assunção, Júlia Graciele Vieira, Raquel M. F. Sousa, Elaine Angélica Mundim Ribeiro |
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| Jazyk: | portugalština |
| Rok vydání: | 2017 |
| Předmět: |
Chemistry
corn husk industrial laundries 02 engineering and technology General Chemistry 010501 environmental sciences 01 natural sciences lcsh:Chemistry wastewater treatment lcsh:QD1-999 020401 chemical engineering 0204 chemical engineering 0105 earth and related environmental sciences cationic hemicelluloses |
| Zdroj: | Química Nova, Volume: 40, Issue: 1, Pages: 17-24, Published: JAN 2017 Química Nova, Vol 40, Iss 1, Pp 17-24 Química Nova v.40 n.1 2017 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| Popis: | The synthesis of cationic derivatives of hemicelluloses from corn husk was carried out by the reaction of hemicelluloses with 2,3-epoxypropyltrimethylammonium chloride (ETA) in aqueous sodium hydroxide. The characterization of the cationic derivatives was carried out by elemental analysis, Fourier Transformed Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TG/DTA). An important characteristic was the solubility in water of the produced derivatives. This characteristic was used to apply derivatives as auxiliary coagulation with tannin in wastewater treatment for industrial laundries. The results showed that the association of tannin and cationic hemicelluloses (3,200 mg L-1) is important because the turbidity removal was greater than 95% in all range of pH, including alkaline regions. Then it is unnecessary to adjust the pH before the coagulation step. |
| Databáze: | OpenAIRE |
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