Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation
Methylene blue (MB) is a dye pollutant commonly present in textile wastewater. We investigate and critically evaluate the applicability of BaTiO3/GO composite for photodegradation of MB in synthetic wastewater under UV–vis irradiation. To enhance its performance, the BaTiO3/GO composite is varied ba...
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my.utm.876242020-11-30T09:06:24Z http://eprints.utm.my/id/eprint/87624/ Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation Zhu, Mengting Kurniawan, Tonni Agustiono Fei, Song Tong, Ouyang Othman, Mohd. Hafiz Dzarfan Rezakazemi, Mashallah Shirazian, Saeed TP Chemical technology Methylene blue (MB) is a dye pollutant commonly present in textile wastewater. We investigate and critically evaluate the applicability of BaTiO3/GO composite for photodegradation of MB in synthetic wastewater under UV–vis irradiation. To enhance its performance, the BaTiO3/GO composite is varied based on the BaTiO3 weight. To compare and evaluate any changes in their morphologies and crystalline structures before and after treatment, BET (Brunauer–Emmett–Teller), XRD (X-ray diffraction), FTIR (Fourier transform infrared spectroscopy), SEM (scanning electron microscopy) and TEM (transmission electron microscopy) tests are conducted, while the effects of reaction time, pH, dose of photocatalyst and initial MB concentration on its photodegradation by the composite are also investigated under identical conditions. The degradation pathways and removal mechanisms of MB by the BaTiO3/GO are elaborated. It is evident from this study that the BaTiO3/GO composite is promising for MB photodegradation through ·OH. Under optimized conditions (0.5 g/L of dose, pH 9.0, and 5 mg/L of MB concentration), the composite with 1:2 dose ratio of BaTiO3/GO has the highest MB degradation rate (95%) after 3 h of UV vis irradiation. However, its treated effluents still could not comply with the discharge standard limit of less than 0.2 mg/L imposed by national environmental legislation. This suggests that additional biological treatments are still required to deal with the remaining oxidation by-products of MB, still present in the wastewater samples such as 3,7-bis (dimethyl-amino)-10H-phenothiazine 5-oxide. Elsevier Ltd 2019-12 Article PeerReviewed Zhu, Mengting and Kurniawan, Tonni Agustiono and Fei, Song and Tong, Ouyang and Othman, Mohd. Hafiz Dzarfan and Rezakazemi, Mashallah and Shirazian, Saeed (2019) Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation. Environmental Pollution, 255 . p. 113182. ISSN 0269-7491 http://dx.doi.org/10.1016/j.envpol.2019.113182 |
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TP Chemical technology Zhu, Mengting Kurniawan, Tonni Agustiono Fei, Song Tong, Ouyang Othman, Mohd. Hafiz Dzarfan Rezakazemi, Mashallah Shirazian, Saeed Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation |
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Methylene blue (MB) is a dye pollutant commonly present in textile wastewater. We investigate and critically evaluate the applicability of BaTiO3/GO composite for photodegradation of MB in synthetic wastewater under UV–vis irradiation. To enhance its performance, the BaTiO3/GO composite is varied based on the BaTiO3 weight. To compare and evaluate any changes in their morphologies and crystalline structures before and after treatment, BET (Brunauer–Emmett–Teller), XRD (X-ray diffraction), FTIR (Fourier transform infrared spectroscopy), SEM (scanning electron microscopy) and TEM (transmission electron microscopy) tests are conducted, while the effects of reaction time, pH, dose of photocatalyst and initial MB concentration on its photodegradation by the composite are also investigated under identical conditions. The degradation pathways and removal mechanisms of MB by the BaTiO3/GO are elaborated. It is evident from this study that the BaTiO3/GO composite is promising for MB photodegradation through ·OH. Under optimized conditions (0.5 g/L of dose, pH 9.0, and 5 mg/L of MB concentration), the composite with 1:2 dose ratio of BaTiO3/GO has the highest MB degradation rate (95%) after 3 h of UV vis irradiation. However, its treated effluents still could not comply with the discharge standard limit of less than 0.2 mg/L imposed by national environmental legislation. This suggests that additional biological treatments are still required to deal with the remaining oxidation by-products of MB, still present in the wastewater samples such as 3,7-bis (dimethyl-amino)-10H-phenothiazine 5-oxide. |
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Article |
author |
Zhu, Mengting Kurniawan, Tonni Agustiono Fei, Song Tong, Ouyang Othman, Mohd. Hafiz Dzarfan Rezakazemi, Mashallah Shirazian, Saeed |
author_facet |
Zhu, Mengting Kurniawan, Tonni Agustiono Fei, Song Tong, Ouyang Othman, Mohd. Hafiz Dzarfan Rezakazemi, Mashallah Shirazian, Saeed |
author_sort |
Zhu, Mengting |
title |
Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation |
title_short |
Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation |
title_full |
Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation |
title_fullStr |
Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation |
title_full_unstemmed |
Applicability of BaTiO 3/graphene oxide (GO) composite for enhanced photodegradation of methylene blue (MB) in synthetic wastewater under UV-vis irradiation |
title_sort |
applicability of batio 3/graphene oxide (go) composite for enhanced photodegradation of methylene blue (mb) in synthetic wastewater under uv-vis irradiation |
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Elsevier Ltd |
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2019 |
url |
http://eprints.utm.my/id/eprint/87624/ http://dx.doi.org/10.1016/j.envpol.2019.113182 |
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1685578964578336768 |
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13.188404 |