Bismuth ferrate-carbon nano tube, preparation method thereof and method for treating organic dye wastewater by utilizing bismuth ferrate-carbon nano tube

Abstract

The invention discloses a bismuth ferrate-carbon nano tube, a preparation method thereof and a method for treating organic dye wastewater by utilizing the bismuth ferrate-carbon nano tube and belongs to the field of wastewater treatment. The preparation method of the bismuth ferrate-carbon nano tube comprises the following steps of: (1) dissolving ferric nitrate and bismuth nitrate in pure 2-methoxyethanol; (2) adding a nitric acid solution; (3) adding the carbon nano tube, citric acid and glycol; (4) rising the temperature for heating so as to form sol; (5) rising the temperature for evaporating a solvent so as to form gel; (6) calcining; and (7) rising temperature and calcining to obtain crystal. The method for treating the organic dye wastewater by utilizing the bismuth ferrate-carbon nano tube prepared by the preparation method comprises the following steps of: (A) settling the wastewater containing organic dyes and taking supernatant liquor; (B) adding the bismuth ferrate-carbon nano tube; (C) recovering the bismuth ferrate-carbon nano tube; and (D) heating the bismuth ferrate-carbon nano tube in a microwave oven, and putting the bismuth ferrate-carbon nano tube into use again. The material and the method for treating the organic dye wastewater are strong in applicability, fast and energy-saving and can be better combined with the existing process.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, more specifically, it relates to a magnetic adsorbent bismuth ferrite-carbon nanotube and a preparation method thereof, and a method for quickly treating organic dye wastewater with the bismuth ferrite-carbon nanotube prepared by the method method. Background technique [0002] Water resources, together with energy resources and arable land resources, are called the three important strategic resources supporting the sustainable development of my country's economy and society. The scarcity of water resources not only comes from the scarcity and unevenness of water quantity, but also from the destruction of water quality. With the rapid development of the dye textile industry, the variety and quantity of dyes continue to increase. Synthetic dye factories and printing and dyeing factories discharge a large amount of dye wastewater every year, which has become one of the key pollution sources of ...

AI Technical Summary

Problems solved by technology

There are also microwave-treated activated carbon (Jou, G. C. J., Application of activated carbon in a microwave radiation field to treat trichloroethylene. In 1998; Vol. 36, pp 1643) and silicon carbide materials (Pallavkar, S.; Kim , T.-H.; Lin, J.; Hopper, J.; Ho, T.; Jo, H.-J.; Lee, J.-H., Microwave-Assisted Noncatalytic Destruction of Volatile Organic Compounds Using Ceramic- Based Microwave Absorbing Media. In 2010; Vol. 49, pp 8461), but these methods use high temperature treatment, the speed is slow, may cause secondary pollution, and are not suitable for home use

At present, the research on bismuth ferrite is limited to the preparation of magnetic materials and related research, so there is no water treatment technology involving the research of using bismuth ferrite as a magnetic medium and oxidant