Preparation of red mud-based polymer catalyst and application of catalyst in organic dye degradation

Abstract

The invention discloses a preparation of a red mud-based polymer catalyst and an application of the catalyst in organic dye degradation. A preparation method respectively takes industrial solid waste red mud of different producing areas as raw materials to prepare the red mud-based polymer catalyst under the excitation of sodium silicate, and the preparation of the red mud-based polymer catalyst has the advantages that the red mud raw materials can be completely utilized and no three wastes are discharged. The red mud-based polymer catalyst is applied to the degradation reaction of an indigo dye wastewater solution under ultraviolet irradiation, the degradation rate of the red mud-based polymer catalyst reaches 100%, the degradation efficiency is high, dye molecules are completely degraded into CO2 and H2O, secondary pollution cannot be generated, and moreover, dual purposes of using waste to treat waste are achieved. The preparation and dye degradation of the red mud-based polymer catalyst are simple in reaction technology, so that the practical application of large-scale preparation and dye degradation can be realized.

Description

technical field [0001] The invention belongs to the preparation of an aluminosilicate polymer catalyst and its application in the field of wastewater treatment, in particular to the preparation of a pure red mud-based polymer catalyst and its application in degrading organic dyes. Background technique [0002] Red mud is a muddy strong alkaline solid waste with high water content discharged during the alumina smelting process, mainly composed of fine-grained mud and coarse-grained sand. With the increasing development of the aluminum industry, the amount of red mud discharged from the production of alumina is huge. According to statistics, 1 to 1.8 tons of red mud is discharged for every ton of alumina produced. As the fourth largest producer of alumina in the world, China is only the top five aluminum Industrial bases (Shandong, Shanxi, Great Wall, Guizhou and Guangxi), the annual production of red mud reaches about 6 million tons, the accumulated red mud stock is nearly 20...

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Problems solved by technology

The third is to acidify the red mud [37，38] and to prepare the adsorbent by precipitation [37，38，15-21] , but when the adsorbent reaches saturated adsorption, acid treatment or high temperature treatment is required to regenerate the adsorbent, which not only consumes energy, but also produces secondary pollution

[0006] By consulting a large number of literature and invention patents, it has not been reported that a single red mud is used as a raw material to prepare a red mud-based polymer catalyst and use it for the degradation of organic dyes.

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