Abstract
This work addresses the application of Refuse Derived Fuel (RDF) char as a low-cost adsorbent for methylene blue (MB) in batch mode, as an approach to remediate pigment contaminated effluents and a model for the adsorption of cationic analytes. The RDF char was tested without pre-treatment and after a cold alkali treatment to enhance adsorption. The adsorbents were characterized for proximate and ultimate composition, pHpzc and N2 adsorption/desorption behavior. Operation parameters such as pH, adsorbent dose, contact time, dye concentration and temperature were varied. Kinetic studies revealed that adsorption of methylene blue in the RDF chars followed a pseudo-second-order kinetic model. Adsorption isotherms showed differences in the possible adsorption mechanisms as a result of char activation. This work highlighted that RDF chars that are not suitable for energy conversion may be valorized as a low-cost adsorbents.
Original language | English |
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Title of host publication | Wastes: Solutions, Treatments and Opportunities III - Selected papers from the 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019 |
Editors | Cândida Vilarinho, Fernando Castro, Margarida Gonçalves, Ana Luísa Fernando |
Publisher | CRC Press/Balkema |
Pages | 549-554 |
Number of pages | 6 |
ISBN (Print) | 9780367257774 |
DOIs | |
Publication status | Published - 2020 |
Event | 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019 - Costa da Caparica, Portugal Duration: 4 Sept 2019 → 6 Sept 2019 |
Conference
Conference | 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019 |
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Country/Territory | Portugal |
City | Costa da Caparica |
Period | 4/09/19 → 6/09/19 |