Abstract
The sugarcane bagasse fly ash was used to evaluate its adsorption behavior for phenol removal from aqueous solution at three different temperatures. Adsorption tests were performed in batch reactors and also in fixed-bed columns. Pseudo-first order, pseudo-second order and intraparticle diffusion kinetic models were applied to describe adsorption kinetics in batch systems. The pseudo-second model fitted appropriately the obtained experimental data at the three different temperatures tested. Thomas, Yoon-Nelson, Adams-Bohart and Dose-Response mathematical models were tested for describing phenol adsorption in dynamic systems (fixed bed columns). Experimental data were well-fitted to the non-linear form of all these models with high regression coefficients.
Highlights
Phenols are organic compounds produced and used in different industry such as coke, oil refineries, pharmaceutical and phenolic resin plants [1]
The previous study showed that the sugarcane bagasse fly ashes (SBFA) was an effective adsorbent for the removal of phenol from aqueous solution
Authors consider that the study of kinetics in adsorption processes is important since it clarifies the mechanism of adsorption
Summary
Phenols are organic compounds produced and used in different industry such as coke, oil refineries, pharmaceutical and phenolic resin plants [1]. The discharge of phenolic waste into watercourses affects to the flora and fauna and the ingestion of small amounts beings may cause affections human health [5]. For all these reasons, phenols are pollutants classified as pollutants of high priority. The previous study showed that the SBFA was an effective adsorbent for the removal of phenol from aqueous solution. The sorption kinetics of phenol in aqueous solution, in batch and column systems, using SBFA was investigated. Authors consider that the study of kinetics in adsorption processes is important since it clarifies the mechanism of adsorption
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