Author:
Aldás Sandoval María Belén,Buenaño Bautista Brenda Belén,Vera Calle Edwin Rafael
Abstract
The aim of this research was to evaluate the coagulating/flocculating characteristics of three natural polymers: green plantain peel starch, orange peel pectin and tamarind seed extracts in three solutions (water, sodium chloride and ammonium acetate), for the purification of raw natural water with turbidity of 5,32 NTU. Natural polymers did not present coagulant activity due to the low turbidity of raw natural water. However, they showed flocculant activity in combination with aluminum sulfate. The optimal combinations of aluminum sulfate [mg/L] + natural polymer [mg/L] were: 50+0,2 for starch, 60+0,06 for pectin, 60+0,6 for tamarind extract in water, 60+0,5 for tamarind extract in sodium chloride and 60+0,2 for tamarind extract in ammonium acetate. Removal values of turbidity and color were about 87% and 92%, respectively. Residual sludge exceeded the maximum permissible limits for discharging to the sewer system. In addition, it showed a toxic effect on the mitotic activity of onion roots with an IC50 of 0,5 to 2%.
Publisher
Universidad Nacional de Colombia
Subject
General Engineering,Building and Construction
Reference70 articles.
1. Aina, V., Barau, M., Mamman, O., Zakari, A., and Haruna, H. (2012). Extraction and Characterization of Pectin from Peels of Lemon (Citrus limon), Grape Fruit (Citrus paradisi) and Sweet Orange (Citrus sinensis). British Journal of Pharmacology and Toxicology, 3(6), 259–262.
2. Antov, M., ˇS´ciban, M., Prodanovi´ c, J., Kuki´ c, D., Vasi´ c, V., Dordevi´ c, T., and Miloˇsevi´ c, M. (2018). Common oak (Quercus robur) acorn as a source of natural coagulants for water turbidity removal. Industrial Crops and Products, 117, 340–346. https://doi.org/10.1016/j.indcrop.2018.03.022
3. American Public Health Association (APHA) (2005). Standard Methods for Examination of Water and Wastewater (21st ed.). Washington D.C.: APHA.
4. Association of Official Analytical Chemists, and Horwitz, W. (Eds.). (2000). Food composition, additives, natural contaminants (17th ed). Arlington, Va: AOAC International.
5. American Society for Testing Materials, ASTM. (2013). D203513 Standard Practice for Coagulation-Flocculation Jar Test of Water. West Conshohocken, PA: ASTM International. https://doi.org/10.1520/D203513
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