| Title | Use of charcoal from gasification residues in adsorption pilot plant for the practical application of circular economy in industrial wastewater treatment |
|---|---|
| ID_Doc | 4475 |
| Authors | do Nascimento, AC; do Nascimento, BF; da Silva, MP; Santos, RS; Neves, TP; de Araujo, CMB; de Luna, FET; Sobrinho, MAD |
| Title | Use of charcoal from gasification residues in adsorption pilot plant for the practical application of circular economy in industrial wastewater treatment |
| Year | 2022 |
| Published | Chemical Engineering Communications, 209, 10 |
| Abstract | In the present work, the charcoal obtained after the gasification of wood residues was tested in a pilot adsorption unit to evaluate the feasibility of treating real textile wastewater on a semi-industrial scale. The aims were to evaluate the global performance of the adsorption column in the pilot system using a methylene blue (MB) solution, and then a real sample of textile wastewater. Two charcoal samples, which were a by-product of the gasification process, were obtained, characterized, and tested with a MB dye solution. The experimental adsorption capacity of the fixed-bed was near 34 mg.g(-1) in both cases, and the overall removal efficiency of the column was >91%. Experimental data were fitted according to the Thomas and Adams-Bohart models. The pilot plant proved to be effective for improving the treatment of real textile wastewater, regarding the removal of color and part of organic matter, verified by the evolution of chemical oxygen demand over time. The cost to operate the pilot plant was calculated, and the contribution to the circular economy was considered. The pilot unit was promising for improving the wastewater treatment process, adding value, and giving a new purpose to a waste that normally would be disposed in the environment. |
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