Water is an essential resource for human society, underpinning the entire Earth's ecosystem and the continuous development of human society. However, the escalating water pollution problem significantly threatens our water resources. Particularly, due to the lack of efficient and economical treatment methods, high-concentration industrial dye wastewater is often discharged into natural bodies of water without proper treatment. These high-concentration dye wastewaters are not naturally degradable, threatening the stability of the ecosystem in natural bodies of water. Therefore, developing an efficient and economical treatment method for high-concentration dye wastewater is of great value.

In our research, we have developed Fe-pillared bentonite and Ce-pillared bentonite as adsorbents usi...[ Read more ]

Water is an essential resource for human society, underpinning the entire Earth's ecosystem and the continuous development of human society. However, the escalating water pollution problem significantly threatens our water resources. Particularly, due to the lack of efficient and economical treatment methods, high-concentration industrial dye wastewater is often discharged into natural bodies of water without proper treatment. These high-concentration dye wastewaters are not naturally degradable, threatening the stability of the ecosystem in natural bodies of water. Therefore, developing an efficient and economical treatment method for high-concentration dye wastewater is of great value.

In our research, we have developed Fe-pillared bentonite and Ce-pillared bentonite as adsorbents using the precipitation method. By introducing metal oxides, we enhanced the adsorption capacity of the bentonite and endowed it with catalytic ability, enabling convenient ozonation reduction to remove IC dye waste thoroughly. Moreover, the robust structure of bentonite significantly contributes to its excellent stability.

Regarding catalytic ozonation degradation, we successfully synthesized Ce-Mg-Al LDH in the interlayer structure of bentonite using the hydrothermal precipitation method. By incorporating Ce-Mg-Al LDH, we have enlarged the structural expansion of the bentonite on one hand, which is beneficial to increase the surface area and improve the catalytic efficiency. On the other hand, adding Ce enhances the activity of catalytic ozonation, making it easier to generate free radicals for pollutant degradation. We will adjust a series of reaction parameters to achieve optimal catalytic degradation to reach the highest ozone utilization efficiency.

Lastly, we loaded Fe-Mg-Al LDH onto the bentonite and studied its degradation ability for other dyes. These studies verify that our degradation system is suitable for treating other dyes. This research lays a solid foundation for industrial large-scale treatment of high-concentration dye wastewater.