EVALUATION OF TARO STARCHES (Colocasia esculenta) AS FLOCCULANT AIDS IN TURBIDITY REMOVAL FOR WATER TREATMENT PROCESS

  • R. López-Vidal Universidad Juárez Autónoma de Tabasco. División Académica de Ciencias Biológicas
  • J.R. Laines-Canepa Universidad Juárez Autónoma de Tabasco. División Académica de Ciencias Biológicas
  • J.R. Hernández-Barajas Universidad Juárez Autónoma de Tabasco. División Académica de Ciencias Biológicas
  • M.A. Aparicio-Trápala Universidad Juárez Autónoma de Tabasco. División Académica de Ciencias Agropecuarias
Keywords: coagulation-flocculation, water treatment, starch, taro, Colocasia esculenta

Abstract

In this study the use of modified starches from taro (Colocasia esculenta) as aid agents in the coagulation-flocculation process focused on water treatment has been proposed. For this purpose, three types of physicochemically modified starches from native starch were synthesized: Phosphated, crosslinked and pregelatinized. Based on a standardized experimental test, the removal efficiency of turbidity and color in representative samples of Tabasco’s surface waters with an initial turbidity of 400 UNT was evaluated. The results referred to the level of turbidity removal showed no significant difference between the use of native starch compared to modified starches. In this regard, the maximum turbidity removal was 95% using 15 mg/L of native starch combined with 35 mg/L of Al2(SO4)3. On the other hand, the maximum color removal of 99.2% was reached by using 25 mg/L of phosphated starch with 25 mg/L of sulfate. Accordingly, this study suggests that the use of environmentally friendly agents based on taro starches would reduce the amount of Al2 (SO4)3 typically used in the coagulation-flocculation process in water treatment plants.

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Published
2020-02-24
How to Cite
López-Vidal, R., Laines-Canepa, J., Hernández-Barajas, J., & Aparicio-Trápala, M. (2020). EVALUATION OF TARO STARCHES (Colocasia esculenta) AS FLOCCULANT AIDS IN TURBIDITY REMOVAL FOR WATER TREATMENT PROCESS. Revista Mexicana De Ingeniería Química, 13(3), 855-863. Retrieved from http://www.rmiq.org/ojs311/index.php/rmiq/article/view/1392
Section
Environmental Engineering