:: Volume 6, Issue 2 (Spring 2019) ::
Environ. health eng. manag. 2019, 6(2): 81-88 Back to browse issues page
Removal of metoprolol from aqueous solutions by the activated carbon prepared from pine cones
Dariush Naghipour , Abdoliman Amouei , Kamran Taher Ghasemi , Kamran Taghavi
Corresponding Author: Social Determinants of Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran , iamouei1966@gmail.com
Abstract:   (1216 Views)
Background: Metoprolol (MTP) with its low biodegradability is one of the most dominant micropollutant in the effluent of wastewater treatment plants. The aim of this study was to investigate the removal of metoprolol from aqueous solutions by the activated carbon prepared from pine cones.
Methods: The pine cones were activated using thermal activation method. Characteristics of the adsorbent were determined using Brunauer-Emmett-Teller (BET) and scanning electron microscopy (SEM). In this study, the influent of different parameters such as pH, contact time, initial concentrations of metoprolol, adsorbent dose, temperature, adsorption isotherms, and kinetics were investigated.
Results: The maximum removal efficiency of MTP (89.2%) was obtained at pH=8.5, adsorbent dose=1.5 g, contact time=60 min, and initial concentration=50 mg/L. By increasing the adsorbent dose, the removal efficiency also increased, but the adsorption capacity decreased, however, by increasing the initial concentration, the removal efficiency decreased, but the adsorption capacity increased. The isotherm experimental data for metoprolol was best fitted using the Langmuir model, and kinetic data were better described by pseudo-second-order kinetic model. The thermodynamic study indicated that the adsorption of MTP by the adsorbent was feasible, spontaneous, and endothermic.
Conclusion: MTP removal by the activated carbon prepared from pine cones showed that this natural adsorbent is appropriate for removal of metoprolol from aqueous solutions regarding cost, efficiency, and production method.
Keywords: Metoprolol, Adsorption, Pine cones, Isotherm, Kinetics, Thermodynamics
eprint link: http://eprints.kmu.ac.ir/id/eprint/31289
Full-Text [PDF 795 kb]   (386 Downloads)    
Type of Study: Research | Subject: Special
Received: 2019/06/15 | Accepted: 2019/06/15 | Published: 2019/06/15



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Volume 6, Issue 2 (Spring 2019) Back to browse issues page