You are here:
Publication details
Adsorption of orange G using activated carbon derived from common reed (Phragmites australis) in Mekong Delta, Vietnam
Authors | |
---|---|
Year of publication | 2024 |
Type | Article in Periodical |
Magazine / Source | Desalination and Water Treatment |
MU Faculty or unit | |
Citation | |
web | https://www.sciencedirect.com/science/article/pii/S1944398624001164 |
Doi | http://dx.doi.org/10.1016/j.dwt.2024.100095 |
Keywords | Activated carbon; Adsorption; Agricultural waste biomass; K2CO3 activator; Orange G |
Description | Activated carbon (AC) fabrication using agricultural waste biomass has been considered economical and sustainable. In this study, common reed (Phragmites australis)-derived activated carbon (CRPa-AC) was prepared via two consecutive stages, including pyrolysis and activation using K2CO3 and employed as an absorbent for orange G (OG) removal. The CRPa-AC prepared at 1073 K and the K2CO3/char weigh ratio of 1.5 had the surface area = 549.7 m2/g and exhibited the removal efficiency of OG = 91.8%. The pseudo-second order kinetic and Langmuir isotherm models accurately described the adsorption of OG on the CRPa-AC. The maximum adsorption capacity of CRPa-AC (77.5 mg·g-1) surpassed that of other biomass-based AC previously published. Thermodynamic studies suggested that the OG adsorption on the CRPa-AC surface is endothermic. The good reusability of CRPa-AC after three regeneration cycles enabled its practical use in the OG removal. This study provided a typical example of converting waste into valuable material for wastewater treatment. |