Estudio calorimétrico y de adsorción de 4-nitrofenol en solución acuosa empleando carbonizados de huesos de pollo, bovino y porcino

Abstract

Debido a la importancia que representa el uso de materiales adsorbentes en la reducción de carga contaminante en fuentes hídricas, en este trabajo se obtuvieron carbonizados de huesos de pollo, bovino y porcino empleando diferentes tratamientos térmicos en atmósfera de nitrógeno y dióxido de carbono y se caracterizaron para conocer sus propiedades texturales y químicas. También se determinaron las entalpías de inmersión de los carbonizados utilizando solventes orgánicos e inorgánicos como parte de su caracterización fisicoquímica y se buscó la correlación entre el valor del área superficial de estos materiales con la capacidad de adsorción de 4-nitrofenol en solución acuosa y con las interacciones energéticas que tienen lugar durante el proceso de adsorción de 4- nitrofenol.

Abstract: Due to the importance that represents the use of adsorbents in reducing pollutant load in water sources, in this work were obtained charred bones of chicken, bovine and porcine using different heat treatments with nitrogen and carbon dioxide and characterized to meet their textural and chemical properties. Immersion enthalpies of the char was also determined using inorganic and organic solvents as part of its physicochemical characterization and correlation is sought between the value of the surface area of these materials with the adsorption capacity of 4-nitrophenol in aqueous solution and with energetic interactions that occur during the adsorption process of 4-nitrophenol. The main interest to obtain and characterize these charred was use as adsorbent materials and make use of their textural and chemical properties to remove organic molecules such as 4-nitrophenol, which is considered as one of the priority pollutants in wastewater to be raw material different chemicals. Determination ofimmersion enthalpies as part of the carbonized characterization allowed to obtain information about pore structure, surface chemical nature and the adsorption capacity.