Evaluación De La Eficiencia Como Coagulante De La Semilla De Soja Molida, Soja Deslipidificada Y La Torta De Soja, Frente Al Sulfato De Aluminio En Procesos De Clarificación De Aguas

Abstract

In water clarification processes, coagulation is the process where the most inconveniences can present themselves, since it requires help from coagulant compound for the removal of the majority of the particles; the inadequate use of the coagulants like aluminum sulfide, most used in Colombia, implies disadvantages like higher cost of acquisition that some municipalities can’t cover, as well as environmental and health problems for populations. It’s because of this that it’s necessary to find an alternative to the use of chemical coagulants, for which it’s suggested to use natural coagulants. In this research the efficiency was assessed of the soybean seed as a coagulant in different presentations, ground soybean seed, deslipidified soybean as well as soy cakes comparing them to the efficiency of aluminum sulfide. After obtaining the saline and watery extracts of each of the seeds presentations jar test were carried out to measure the efficiency of each extract in turbidity ranges of 520-480; 270-230 and 150-110 UNT and maintaining an approximate pH of 5 for the synthetic water. The best result was an efficiency of 98.27% with the ground soybean saline extract at an initial turbidity of 503.1 UNT, a 2 ml dose and a synthetic water pH of 5.05; in the same conditions the aluminum sulfide was assessed and the efficiency decreased 2.06%. At a general level at all ranges of turbidity and dose, the saline extract for deslipidified soybean presented the best results, generating 84.98% as the least efficiency.