Lead adsorption from polluted water using Trichocereus cuzcoensis cactus

Fernández-Bernaola U.R.; Maldonado-Farfán A.R. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2020) · DOI: 10.18687/laccei2020.1.1.295

Resumen

This research presents the conditions for the removal of lead from polluted water using a bioadsorbent obtained from the Trichocereus cuzcoensis cactus. The treatment of the contaminated solutions was carried out by the batch technique, using two types of adsorbents from the cactus (The Adsorbent with chlorophyll - ACC and the Adsorbent without chlorophyll - ASC). An adsorption capacity of 160.90 mg/g and 205.40 mg/g was achieved for the ACC and ASC respectively with a concentration of 0.1 g/L. The variation of the adsorption capacity as a function of the pH was studied, both adsorbents have a higher adsorption capacity at a pH 4. Lead kinetics was best described by the pseudo-second-order model and experimental data were adjusted for the Freundlich adsorption isotherm.

Instituciones: Universidad Nacional de San Antonio Abad del Cusco