Evaluación de materiales bioadsorbentes modificados térmicamente en la remoción de nutrientes presentes en aguas residuales municipales de la ciudad de Barranquilla

In the present work clamshells (Polymesoda sp.), oyster shells (Crassostrea rhizophorae) and coral rock (Coquina) were evaluated as bioadsorbent materials for the removal of nutrients presents in municipal wastewater. The bioadsorbents were brought to sizes of 1.18 and 2.36 mm, thermally modified at temperatures between 120 and 1000°C, and their textural and elementals properties were analyzed by different characterization techniques, in which they presented macroporous characteristics, as main compound CaCO3, as well as decomposition at temperatures higher than 600°C in CaO and CO2. Mounts were made at laboratory scale using 0.3 L of wastewater and each material in concentrations of 8 and 12 g/L, under continuous agitation. It was obtained as the best material the modified coquina at 400°C in a concentration of 8 g/L, with removal percentages higher than 30% in PO4, P and NO3, and 11% in NO2 and SO4. These conditions were used on a pilot scale in a Batch reactor, obtaining removal percentages higher than 45% in NO3, 24% in PO4, P and NO2, and 12% in SO4 in the 5 hour measurement. Additionally, the material from the reactor was reused after being treated at 120°C and a higher than 90% removal was found in PO4 and P. The results allowed to conclude that the modified coquina at 400°C is viable for the removal of nutrients, in a tertiary treatment system coupled to a Batch reactor with a fixed bed.

• Autores: Díaz Tequia, Angy Lorena; Rodelo Chamorro, Elena Patricia
• Tipo de recurso: Trabajo de grado de pregrado
• Fecha de publicación: 2019
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: spa
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/4914
• Acceso en línea: https://hdl.handle.net/11323/4914; https://repositorio.cuc.edu.co/
• Palabra clave: Adsorción; Conchas de almeja; Conchas de ostra; Roca coquina; Tratamiento de aguas residuales; Adsorption; Clamshells; Oyster shells; Coquina rock; Wastewater treatment
• Rights: openAccess
• License: Attribution-NonCommercial-ShareAlike 4.0 International