Application of Cationic Hemicelluloses Produced from Corn Husk as Polyelectrolytes in Sewage Treatment

作者：Landim Alan Soares; Rodrigues Filho Guimes; Ferreira Sousa Raquel Maria; Mundim Ribeiro Elaine Angelica; Bento de Souza Fulvio Rafael; Vieira Julia Graciele; Nascimento de Assuncao Rosana Maria; Cerqueira Daniel Alves

来源：Polimeros-Ciencia e Tecnologia, 2013, 23(4): 468-472.

DOI：10.4322/polimeros.2013.054

• Cationic hemicelluloses
• corn husk
• flotation
• sewage treatment

Hemicelluloses were extracted from corn husk and converted into cationic hemicelluloses using 2,3-epoxypropyltrimethylammonium chloride. The degree of substitution was determined as 0.43 from results of elemental analysis. The cationic derivative was also characterized by Fourier transform infrared spectroscopy and Carbon-13 magnetic nuclear ressonance. The produced polymer was employed as coagulant aid in a sewage treatment station (STS) of the municipal department of water and sewer (Departamento Municipal de Agua e Esgoto - DMAE) in Uberlandia-Minas Gerais, Brazil, using Jar test experiments. Its performance was compared to ACRIPOL C10 (R), a commercial cationic polyacrylamide regularly used as a coagulant at the STS. The best result of the jar-test essays was obtained when using cationic hemicelluloses (10 mg L-1) as coagulant aid and ferric chloride as coagulante (200 mg L-1). The resultsof color and turbidity reduction, 37 and 39%, respectively, were better than when using only ferric chloride. These results were also higher than those of commercial polyacrylamide, on the order of 32.4 and 38.7%, respectively. The results showed that the cationic hemicelluloses presented similar or even superior performance when compared to ACRIPOL C10 (R), demonstrating that the polyelectrolytes produced from recycled corn husks can replace commercial polymers in sewage treatment stations.

• 出版日期2013-8