Volume 34, Issue 3, November 2021, Pages 561–572
Coulibaly Sandotin Lassina1, Sangare Drissa2, Kone Tiangoua3, and Lacina Coulibaly4
1 Département Environnement et Développement Durable, UFR - Ingénierie Agronomique, Forestière et Environnementale, Université de Man, Man, Côte d’Ivoire
2 Département Environnement et Développement Durable, UFR - Ingénierie Agronomique, Forestière et Environnementale, Université de Man, Man, Côte d’Ivoire
3 Laboratoire d’Environnement et de Biologie Aquatique, UFR - Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, Abidjan, Côte d’Ivoire
4 Unité de recherche en Biotechnologie et Ingénierie de l'Environnement, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
Original language: English
Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The kaolinite-coating laterite (B catalysts) was used for the efficient degradation of methylene blue (MB) from aqueous solution. Heterogeneous Fenton catalytic oxidation experiments of B catalyst were investigated by changing the effective factors such as amount of laterite and amount of kaolinite. To that end, four (4) types of B catalysts were made: (i) B0 catalyst (50% kaolinite + 50% uncalcined laterite); B1 catalyst (50% kaolinite + 50% laterite calcined at 600°C), B2 catalyst (30% kaolinite + 70 % laterite calcined at 600° C) and B3 catalyst (100 % kaolinite + Iron solution from laterite). The result showed that B2 catalyst exhibits the highest performance with a MB degradation percentage (77%) after 100 min. For analyzing the performance of B2 catalyst, the effects of B2 catalyst amount, pH, and hydrogen peroxide (H2O2) were also studied at 100 min. Kinetic studies were also carried out in this experiment. The results indicated that more than 90% of decolorization was achieved with 60g of B2 catalyst at pH acidic (2 to 3). Moreover, higher MB degradation (≤ 90%) was reported at the presence of H2O2 and B2 catalyst in the reactor. However, only 14% of MB was adsorbed in the presence of H2O2 and without B2 catalyst. On the other hand, it was observed that second- order kinetics (R2>0.90) was well fitted in the MB degradation process. Considering the above, kaolinite-coating laterite (B2 catalyst) could be used as efficient, cheap, and eco-friendly catalytic oxidation material for the degradation of MB in aqueous solution.
Author Keywords: Heterogeneous Fenton, Kaolinite, Kinetic parameters, Laterite, Methylene Blue.
Coulibaly Sandotin Lassina1, Sangare Drissa2, Kone Tiangoua3, and Lacina Coulibaly4
1 Département Environnement et Développement Durable, UFR - Ingénierie Agronomique, Forestière et Environnementale, Université de Man, Man, Côte d’Ivoire
2 Département Environnement et Développement Durable, UFR - Ingénierie Agronomique, Forestière et Environnementale, Université de Man, Man, Côte d’Ivoire
3 Laboratoire d’Environnement et de Biologie Aquatique, UFR - Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, Abidjan, Côte d’Ivoire
4 Unité de recherche en Biotechnologie et Ingénierie de l'Environnement, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
Original language: English
Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The kaolinite-coating laterite (B catalysts) was used for the efficient degradation of methylene blue (MB) from aqueous solution. Heterogeneous Fenton catalytic oxidation experiments of B catalyst were investigated by changing the effective factors such as amount of laterite and amount of kaolinite. To that end, four (4) types of B catalysts were made: (i) B0 catalyst (50% kaolinite + 50% uncalcined laterite); B1 catalyst (50% kaolinite + 50% laterite calcined at 600°C), B2 catalyst (30% kaolinite + 70 % laterite calcined at 600° C) and B3 catalyst (100 % kaolinite + Iron solution from laterite). The result showed that B2 catalyst exhibits the highest performance with a MB degradation percentage (77%) after 100 min. For analyzing the performance of B2 catalyst, the effects of B2 catalyst amount, pH, and hydrogen peroxide (H2O2) were also studied at 100 min. Kinetic studies were also carried out in this experiment. The results indicated that more than 90% of decolorization was achieved with 60g of B2 catalyst at pH acidic (2 to 3). Moreover, higher MB degradation (≤ 90%) was reported at the presence of H2O2 and B2 catalyst in the reactor. However, only 14% of MB was adsorbed in the presence of H2O2 and without B2 catalyst. On the other hand, it was observed that second- order kinetics (R2>0.90) was well fitted in the MB degradation process. Considering the above, kaolinite-coating laterite (B2 catalyst) could be used as efficient, cheap, and eco-friendly catalytic oxidation material for the degradation of MB in aqueous solution.
Author Keywords: Heterogeneous Fenton, Kaolinite, Kinetic parameters, Laterite, Methylene Blue.
How to Cite this Article
Coulibaly Sandotin Lassina, Sangare Drissa, Kone Tiangoua, and Lacina Coulibaly, “Eco-design of heterogeneous Fenton processes using laterite and kaolinite for methylene blue degradation,” International Journal of Innovation and Applied Studies, vol. 34, no. 3, pp. 561–572, November 2021.
