Eficiencia de la semilla Moringa Oleífera como coagulante natural para la remoción de la turbidez del río Sinú
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2014
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Corporación Universitaria Lasallista
Área Metropolitana del Valle de Aburrá
Área Metropolitana del Valle de Aburrá
Resumen
Introduction. Sinú river is the main fresh water supplying source in the Córdoba province, but its turbidity
levels require it to be coagulated, and this means costly chemical products. Natural coagulants such as Moringa
Oleifera (M. Oleifera) represent a sustainable, cheap and safe alternative for water purification. Objective. To evaluate the M. Oleifera seeds as a coagulant and its effects on pH and on the alkalinity. materials and methods.
Eight simple samplings were performed at the Sinú river, between March and Aril 2013. M. Oleifera seeds were
selected, husked, dried, minced and sifted until a fine powder was obtained. This powder was, then, degreased,
by the use of a Soshlet extraction equipment. The doses of the coagulant were prepared, from 2,5 mg/L to 30,0
mg/L in saline solution and were applied to each sample taken from the river. A cubic response surface model
was generated in order to evaluate the turbidity removal. Results. High turbidity removal efficiency values (>90 %)
were achieved with doses between 4,5 mg/L and 17,5 mg/L of natural coagulant for initial turbidities above 90,0
UNT. Nevertheless, for initial turbidities below 66,0 UNT, efficiency levels were also lower (between 70 % and
85 %).No significant pH and alkalinity alterations were found after the tests. Conclusion. M. Oleifera is an efficient, safe and economic coagulant to remove turbidity from Sinú river´s water.
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Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Moringa oleifera, Río Sinú, Contaminación del agua, Tratamiento de aguas, Coagulación