Removal of Mn from aqueous solutions, by activated carbon obtained from tire residuals

Abstract

Potassium permanganate (KMnO 4) is one of the toxic materials that it is essential to remove it from industrial waste waters. In this study, Mn ion was converted to the chelating agent. Tire residuals are used to produce activated carbon. Subsequently, the adsorption of Mn by activated carbon was investigated. The applied activated carbon was prepared by physical activation of the vapor water. Porosity analysis, SEM analysis, zeta potential measurement, adsorption kinetics, and isotherm models were applied to this study. The results showed that the maximum specific surface area of the obtained physical activated carbon was 550 m 2 /g. The maximum amount of adsorption was 120 mg/g. It was also shown that the adsorption process is more compatible with pseudo-second-order kinetics model. Isotherm models indicated that the adsorption of Mn on the physically produced activated carbon is more compatible with the Freundlich model. Thermodynamic parameters proved that the adsorption process is spontaneous and endothermic. The overall results demonstrated that activated carbon, obtained from tire residuals, has a good efficacy for removing Mn ions.

Iopamidol Abatement from Waters: A Rigorous Approach to Determine Physicochemical Parameters Needed to Scale Up from Batch to Continuous Operation

“…While the volume in pores is 0.018 cm 3 /g, the total volume in pores is 1.16 cm 3 /g and the total area in pores is 1754 m 2 /g. The results are in line with those reported in the literature …”

“…The results are in line with those reported in the literature. 56 The SEM micrographs were conducted to investigate the morphology of the sorbent used (Figure 4). The micrographs show lamellar composition of the AC Fluka.…”

Polymer Waste Valorization into Advanced Carbon Nanomaterials for Potential Energy and Environment Applications

“…Following that, activation was performed for 1-3 h at temperatures going from 719 to 930 °C using a water vapor activator at a flow speed of 50 mL min −1 and ramping of 10 °C min −1 . [121] A facile method of producing AC from tire waste was reported by Conde-Rivera et al Rubber from used tires was treated and carbonized for 1 h in a fixed bed reactor operating at 500 °C with a ramping of 10 °C min −1 under a N 2 atmosphere. In order to produce AC, it was heated to 900 °C with a heating rate of 10 °C min −1 for 4 h while being supplied with CO 2 at a rate of 3.5 mL min −1 g −1 of carbonized material.…”

Contaminación de aguas por elementos metálicos traza y empleo de carbón activado para su remoción

“…Dentro de las principales fuentes de materias primas para la obtención de carbones activados se encuentran los desechos agrícolas e industriales, los cuales muestran una elevada capacidad de remoción de elementos metálicos traza de aguas contaminadas, véase Tabla 5. Algunos de los desechos empleados son las cáscaras de semillas (Ani et al, 2019;Lu & Guo, 2019;Özsin et al, 2019;Ullah et al, 2019), pajas de maíz (Ma et al, 2019), arroz (Deng et al, 2019), ramas de olivo (Alkherraz et al, 2020), bagazo (Wan & Li, 2018), neumáticos (Dimpe et al, 2017;Niksirat et al, 2019;Shahrokhi-Shahraki et al, 2021), material elástico (Zhang et al, 2016) y las algas (Francoeur et al, 2021;Alvarez-Galbán et al, 2022).…”