Browsing by Author "Guijarro Padilla, Alex Salin"

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    Determinación de la cinética de adsorción y curvas de ruptura de metales pesados (Cd, Cr, Cu, Ni, Pb, Zn) en las sustancias adsorbentes piedra caliza, carbón activo y turba
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos y Biotecnología. Carrera de Ingeniería Bioquímica, 2022-09) Guijarro Padilla, Alex Salin; Peñafiel Ayala, Rodny David
    Industrial water from washing machines in the city of Ambato can reach levels of heavy metals that are harmful to the environment and public health. This study aims to determine the kinetics of adsorption of active carbon, limestone and peat adsorbents towards the bivalent heavy metals Cd, Cr, Cu, Ni, Pb, Zn and Cr (VI) through discontinuous experiments, to determine the kinetics and the matrix effect. For this process, 10 g of adsorbent were placed in 500 ml of the solution enriched with metals 10 times the permissible limits by TULSMA at 150 rpm and 60 min. Data were evaluated by adsorption capacity and removal percentage, while kinetic data were evaluated using pseudo first and second order models. In the continuous experimentation of the rupture curves, work was carried out by means of the experimental installation of two columns as a filter medium. The discontinuous experience showed that peat and activated carbon are the best adsorbents with removal percentages higher than 80 percent for most of the metals, being the pseudo-second order kinetic model the one that best fit for most of the metals and the cases with their respective corroboration with other bibliographic studies. Finally, the rupture curves as a function of time were satisfactorily performed, showing the best performance by having 2 columns, being the most viable, economical, and sustainable solution for the treatment of media contaminated by heavy metals.