Diseño de un filtro de monomedio para agua residual contaminada con colorante azul brillante FCF a partir de la corteza de naranja (Citrus Sinensis), y borra de café (Coffea Arabica)

Abstract

The Blue Bright F.C.F dye is used in the preparation of some foods and in textile processes, the discharges of these industries generate an aesthetic and environmental impact to the water. In 2018 Torres and Vanegas do the research and tests with three possible bioadsorbents to remove this contaminant, they determining that the coffee bean and the orange peel had high removal percentages for synthetic samples in the laboratory and recommending evaluating adsorption in real samples. The present investigation gives continuity to the process by evaluating the adsorption power of the coffee and orange peel by means of the adsorption isotherms and from these, to carry out the design, elaboration and commissioning of a pilot filter with the most efficient bioadsorbent, the which, by Freundlich isotherm, proved to be the coffee bean. A filter measuring 1.3 m high and 4 ”in diameter was designed and constructed, in which continuous and repetitive tests were carried out with a sample of residual water obtained from a subprocess of making an energy drink; the filtration was carried out during 100 minutes in which 60 L of wastewater passed, showing 100% removals for the Bright Blue FCF parameter in the continuous process at 40 minutes and average removals of 92% of the dye and turbidity for the repeatability tests.