Author:
Najafi Mohammad,Abousadi Zahra Arab,Honarvar Bizhan,Sajadian Seyed Ali
Abstract
AbstractActivated carbons are used in industrial applications; their cost is a major barrier to their more widespread application. Regeneration of activated carbons is indispensable to minimize operational costs and product wastage. Supercritical carbon dioxide (SC-CO2) as green technology was used to regenerate activated carbons. In this work, response surface methodology was employed to optimize the supercritical regeneration process and to evaluate the effect of the operational parameters including pressure (100–300 bar), temperature (313–333 K), flow rate (2–6 g/min), and dynamic time (30–150 min) on the regeneration yield. The maximum regeneration yield (93.71%) was achieved at 285 bar, 333 K, 4 g/min, and 147 min. Mathematical modeling was done using two one-parameter kinetics models, which agree well with the experimental data. The fitting parameter of the model was obtained by using a differential evolution algorithm. The chemical composition of the substances extracted from the activated carbon was identified by gas chromatography. The results showed that the regeneration of activated carbon by SC-CO2 can be an alternative method to conventional methods.
Publisher
Springer Science and Business Media LLC
Reference54 articles.
1. Chen, L. et al. Optimization of a Fe–Al–Ce nano-adsorbent granulation process that used spray coating in a fluidized bed for fluoride removal from drinking water. Powder Technol. 206, 291–296 (2011).
2. Lu, J. et al. Removal of imidacloprid and acetamiprid in tea (Camellia sinensis) infusion by activated carbon and determination by HPLC. Food Control 131, 108395 (2022).
3. Ouyang, J., Zhou, L., Liu, Z., Heng, J. Y. & Chen, W. Biomass-derived activated carbons for the removal of pharmaceutical mircopollutants from wastewater: A review. Sep. Purif. Technol. 253, 117536 (2020).
4. Vedenyapina, M., Kurmysheva, A. Y., Rakishev, A. & Kryazhev, Y. G. Activated carbon as sorbents for treatment of pharmaceutical wastewater, Solid Fuel. Chemistry 53, 382–394 (2019).
5. Jeirani, Z., Niu, C. H. & Soltan, J. Adsorption of emerging pollutants on activated carbon. Rev. Chem. Eng. 33, 491–522 (2017).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献