Adsorption of methyl orange on ZnO supported by seawater-modified red mud
In this study, a novel adsorbent (SRM-ZnO) was prepared using zinc oxide supported on red mud in a seawater medium and was used for the adsorption of methyl orange (MO). It is expected to solve the recycling of red mud and prepare an economical adsorbent with high efficiency to adsorb dye wastewater...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-04-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/85/7/2208 |
| _version_ | 1818009388848250880 |
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| author | Chun-Lei Qiao Yan-Ming Xu Yue Yin Yu-Xing Xu Yi-Hua Xiao Chang-Qing Liu |
| author_facet | Chun-Lei Qiao Yan-Ming Xu Yue Yin Yu-Xing Xu Yi-Hua Xiao Chang-Qing Liu |
| author_sort | Chun-Lei Qiao |
| collection | DOAJ |
| description | In this study, a novel adsorbent (SRM-ZnO) was prepared using zinc oxide supported on red mud in a seawater medium and was used for the adsorption of methyl orange (MO). It is expected to solve the recycling of red mud and prepare an economical adsorbent with high efficiency to adsorb dye wastewater. Material composition and morphology analyses showed that hydrotalcite compounds were attached on the surface of SRM-ZnO. The hydrotalcite compounds can increase the surface area of the modified red mud and thus increase the adsorption capacity of MO. The adsorption of MO dye on modified red mud conforms to the Temkin isotherm model and pseudo-second-order kinetic model. The adsorption behavior mainly includes physical interaction, supplemented with chemical interactions. Result also found that the adsorption of MO on SRM-ZnO is a spontaneous exothermic process. HIGHLIGHTS
A novel adsorbent was prepared using ZnO supported on red mud in seawater.;
Hydrotalcite compounds formed on the surface of SRM-ZnO can improve adsorbing capacity.;
The adsorption complies with the Temkin isotherm model and pseudo-second-order kinetic model.;
The adsorption is mainly physisorption, supplemented with chemical adsorption.; |
| first_indexed | 2024-04-14T05:42:13Z |
| format | Article |
| id | doaj.art-817d9a1481d14ca5b4ec4e46394ad4ee |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-14T05:42:13Z |
| publishDate | 2022-04-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-817d9a1481d14ca5b4ec4e46394ad4ee2022-12-22T02:09:25ZengIWA PublishingWater Science and Technology0273-12231996-97322022-04-018572208222410.2166/wst.2022.102102Adsorption of methyl orange on ZnO supported by seawater-modified red mudChun-Lei Qiao0Yan-Ming Xu1Yue Yin2Yu-Xing Xu3Yi-Hua Xiao4Chang-Qing Liu5 School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China In this study, a novel adsorbent (SRM-ZnO) was prepared using zinc oxide supported on red mud in a seawater medium and was used for the adsorption of methyl orange (MO). It is expected to solve the recycling of red mud and prepare an economical adsorbent with high efficiency to adsorb dye wastewater. Material composition and morphology analyses showed that hydrotalcite compounds were attached on the surface of SRM-ZnO. The hydrotalcite compounds can increase the surface area of the modified red mud and thus increase the adsorption capacity of MO. The adsorption of MO dye on modified red mud conforms to the Temkin isotherm model and pseudo-second-order kinetic model. The adsorption behavior mainly includes physical interaction, supplemented with chemical interactions. Result also found that the adsorption of MO on SRM-ZnO is a spontaneous exothermic process. HIGHLIGHTS A novel adsorbent was prepared using ZnO supported on red mud in seawater.; Hydrotalcite compounds formed on the surface of SRM-ZnO can improve adsorbing capacity.; The adsorption complies with the Temkin isotherm model and pseudo-second-order kinetic model.; The adsorption is mainly physisorption, supplemented with chemical adsorption.;http://wst.iwaponline.com/content/85/7/2208adsorptionmethyl orangered mudseawaterzinc oxide |
| spellingShingle | Chun-Lei Qiao Yan-Ming Xu Yue Yin Yu-Xing Xu Yi-Hua Xiao Chang-Qing Liu Adsorption of methyl orange on ZnO supported by seawater-modified red mud Water Science and Technology adsorption methyl orange red mud seawater zinc oxide |
| title | Adsorption of methyl orange on ZnO supported by seawater-modified red mud |
| title_full | Adsorption of methyl orange on ZnO supported by seawater-modified red mud |
| title_fullStr | Adsorption of methyl orange on ZnO supported by seawater-modified red mud |
| title_full_unstemmed | Adsorption of methyl orange on ZnO supported by seawater-modified red mud |
| title_short | Adsorption of methyl orange on ZnO supported by seawater-modified red mud |
| title_sort | adsorption of methyl orange on zno supported by seawater modified red mud |
| topic | adsorption methyl orange red mud seawater zinc oxide |
| url | http://wst.iwaponline.com/content/85/7/2208 |
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