https://www.socictopen.socict.org/files/original/9877547e29e1c6cb7e28e214a616f434.pdf dd0fafd99164042ff25c258b4ef61462 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Estudio de la detoxificación de efluentes cianurados por oxidación con dióxido de azufre, aire y catalizadores de cobre Creator An entity primarily responsible for making the resource Carolina Liseth Campos, Ernesto De la Torre Description An account of the resource Resumen: Se estudió la detoxificación de efluentes cianurados, mediante oxidación con dióxido de azufre (SO2), aire y catalizadores de Cu. Se ensayaron diversas especies de Cu tales como: CuSO4 en solución, carbón activado granular (CAG) impregnado con CuSO4, CAG impregnado con Cu0 y Cu0 granular. Este proceso es conocido como INCO, el cual oxida el cianuro WAD a cianato y precipita los metales tales como Cu, Ni, Zn, Cd y Fe. Se realizaron ensayos a escala de laboratorio con soluciones sintéticas de 500 mg/L NaCN y efluentes cianurados industriales. Se midió la variación de CN- con respecto al tiempo por titulación con AgNO3. Se estudió la influencia del pH, la dosificación de Na2S2O5 (fuente de SO2) y las concentraciones de los diferentes catalizadores. Los tiempos de oxidación del 98%  de CN- de las soluciones sintéticas de NaCN, bajo las mejores condiciones de operación del proceso INCO (pH 10.0; 276 N L/h aire; 400 RPM; y 1000 mg/L Na2S2O5) fueron 210 min con 50 mg/L Cu2+ (CuSO4), 40 min con 50 g/L de CAG impregnado con CuSO4, 8 min con 50 g/L de CAG impregnado con Cu0 y 195 min con 10 g/L Cu0 granular. Los efluentes industriales fueron detoxificados utilizando 5 g/L CAG impregnado con Cu0. Estos efluentes, con concentraciones iniciales de 432.50 mg/L y 112.50 mg/L de cianuro total alcanzaron 0.06 mg/L cianuro total en 90 min y 0.05 mg/L cianuro total en 40 min, respectivamente. El contenido de metales en los efluentes (Cu, Cd, Zn, Ni y Fe) luego de la precipitación llegaron a los límites permisibles de descarga a un cuerpo de agua dulce según lo establecido en el TULAS. El precio del tratamiento de efluentes cianurados por el método INCO con CAG impregnado con Cu0 es de 6.70 USD/m3. Abstract: It was studied the detoxification of cyanide effluents by oxidation with sulfur dioxide (SO2), air and copper catalyzer. The CuSO4 solution, granular activated carbon (GAC) impregnated with CuSO4, GAC impregnated with Cu0 and granular Cu0 were studied. This process is called INCO process and it oxidizes WAD cyanide to cyanate and precipitates metals such as Cu, Ni, Zn, Cd and Fe. Experiments were conducted at laboratory scale using synthetic solutions of 500 mg/L NaCN and industrial cyanide effluents. The variation of the CN- concentration in time was determined titrimetrically with AgNO3 solution. The influence of pH and the concentrations of Na2S2O5 (SO2 source of process) and Cu catalysts on the rate of the removal of CN- were estudied. The oxidation times of the 98 % of cyanide removal from the synthetic solutions of NaCN based on the best operation conditions (pH 10,0; 276 N L/h air; 400 RPM and 1000 mg/L Na2S2O5) were: 210 min (50 mg/L Cu2+ obtained from CuSO4), 40 min (50 g/L GAC impregnated with CuSO4), 80 min (5 g/L GAC impregnated with Cu0) and 195 min (10 g/L granular Cu0). The industrial effluents were detoxified using 5 g/L GAC impregnated with Cu0. These effluents with initial concentrations of 432.50 mg/L and 112.50 of total cyanide reached 0.06 mg/L total cyanide in 90 min and 0.05 mg/L total cyanide in 40 min, respectively. Besides, the metal content (Cu, Cd, Zn, Ni and Fe) of the industrial effluents after precipitation reached the permissible limits for discharges into a fresh body water according to TULAS. The price of cyanide wastewater treatment by the INCO method using GAC impregnated with carbon is 6.70 USD/m3. Date A point or period of time associated with an event in the lifecycle of the resource 2015 Source A related resource from which the described resource is derived Revista Politécnica Publisher An entity responsible for making the resource available Escuela Politécnica Nacional (EPN) Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Science (General), Technology (General) Relation A related resource <a href="https://revistapolitecnica.epn.edu.ec/ojs2/index.php/revista_politecnica2/article/view/578" target="_blank" rel="noreferrer noopener">https://revistapolitecnica.epn.edu.ec/ojs2/index.php/revista_politecnica2/article/view/578</a>