Adsorción de cromo (III) de aguas residuales de la curtiembre “EL ALCE” del cantón Guano mediante filtración con polvo de vicia faba para reducir el nivel de contaminación.

Abstract

The main objective of the development of the research is to determine if the bean pod which scientific name is Vicia faba, can be used in bioadsorption processes of heavy metals present in effluents from the leather industry, specifically in the removal of Cr. +3 that in small quantities it is not considered toxic, in a higher percentage it can cause problems. The research is carried out around the bean pod itself, which was crushed, taking it to three particle sizes of 1mm, 3.35mm and 5.08mm respectively, with which three fixed-bed filters were assembled through which a certain amount of residual water obtained after random sampling at the "EL AL-CE" tannery, the resulting filtered water was subjected to chemical analysis tests in accordance with the provisions of the 22nd edition of the Standardized Methods for the Analysis of Drinking Water and Residual 3500-Cr B, to measure the amount of Cr+3 present, prior to the filtration process, the initial amount of Cr+3 in each of the samples was analyzed in order to determine whether or not there was a reduction in the metal content. According to the results obtained, we could see a 99% decrease in the metal in all the samples analyzed, the adsorption being greater in the filters that contained the bean pod with a particle size of 5.08 mm, however, after the analysis of variance performed we can assert that the three particle sizes that were the object of study in this work allow reaching the stated objective, which is the reduction of the Cr+3 content, which is why the fact that the bean pod is a bioadsorbent of high performance.