| Title |
Highly efficient removal of aluminum, iron, and manganese ions using Linde type-A zeolite obtained from hazardous waste |
| ID_Doc |
14127 |
| Authors |
Lobo-Recio, MA; Rodrigues, C; Jeremias, TC; Lapolli, FR; Padilla, I; López-Delgado, A |
| Title |
Highly efficient removal of aluminum, iron, and manganese ions using Linde type-A zeolite obtained from hazardous waste |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.chemosphere.2020.128919 |
| Abstract |
Coal acid mine drainage (AMD) contaminates natural water to form mine-impacted water (MIW), which is characterized by high levels of acidity, sulfate, and metallic ions. This study investigates the use of a Linde Type-A (LTA) zeolite obtained from a hazardous industrial waste for Al3+, Fe2+, and Mn2+ removal from synthetic aqueous solutions. The aim of this study is to stablish a basis for the subsequent treatment of MIW in order to obtain reuse water. In a central composite rotatable design (CCRD) study, 8.25 g L-1 zeolite and 147 rpm were the optimal conditions for treating the multicomponent solution, yielding 99.9, 99.9 and 99.3% removal for Al3+, Fe2+, and Mn2+, respectively. Isothermal studies showed that the affinity of the ions by the zeolite were ranked as Al3+>Mn2+>Fe2+. The best fitting isothermal models for monocomponent solutions were Toth, Freundlich, and Sips for Al3+, Fe2+, and Mn2+, respectively. In the multicomponent solution, Sips and Freundlich were the better fitting models for Al3+ and Mn2+, respectively, indicating a weakness of the sorbate-sorbent interactions. Kinetic studies revealed that the quantitative removal of Al3+ was achieved in 5 min. The multicomponent solution was transformed into water that was suitable for non-potable use after an optimal time of 60 min. The results demonstrate that LTA zeolite synthetized from hazardous waste has a high potential for remediating contaminated water by metallic ions at low dosages and short times. Using LTA zeolite for remediating contaminated water could make a positive contribution to the circular economy and environmental sustainability. (C) 2020 Elsevier Ltd. All rights reserved. |
| Author Keywords |
Adsorption isotherms; Adsorption kinetics; Factorial design; Linde Type-A zeolite; Mine-impacted water (MIW) |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000608802100050 |
| WoS Category |
Environmental Sciences |
| Research Area |
Environmental Sciences & Ecology |
| PDF |
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