Preparation method of fibrous heterogeneous Fenton reaction catalyst

Abstract

The invention discloses designing and manufacturing of a functional fiber material in the field of textile materials, relates to a preparation of a fibrous heterogeneous Fenton reaction catalyst, and concretely relates to a preparation method of a fiber capable of catalyzing an oxidizing agent (such as hydrogen peroxide and ozone) to quickly and efficiently oxidize and decompose multiple dyes, being used repetitively and being easy to separate from a water body. The preparation method comprehensively applies precipitation polymerization, wet spinning, infiltration capacity improvement, iron ion complexation and other technologies, and the obtained fiber can be used for treating organism-containing water bodies such as dye wastewater. Compared with an existing heterogeneous Fenton reaction catalyst, the obtained fiber has a better treatment effect on the organism-containing water bodies such as the dye wastewater; compared with a Fenton reaction catalyst prepared through a same-type wet spinning process fiber, the obtained fiber can high-efficiently oxidize and decompose organisms at a super speed so as to quickly and effectively purify the water body, meanwhile, the reusability is remarkably improved, and the application cost is reduced, so that the fiber meets the requirement on industrial practicability.

Description

technical field [0001] The invention belongs to the design and manufacture of functional fiber materials in the field of textile materials, and relates to the preparation of a fibrous heterogeneous Fenton reaction catalyst, specifically a fast and efficient oxidative decomposition catalyst capable of catalyzing oxidants (such as hydrogen peroxide, ozone, etc.) A dye, reusable fiber that easily separates from water bodies. The manufacturing method comprehensively uses technologies such as precipitation polymerization, wet spinning, penetration ability improvement, iron ion complexation, etc., and the obtained fiber can be used for the treatment of water bodies containing organic matter such as dye wastewater. Background technique [0002] The production process of the textile printing and dyeing industry is complicated, and it is a typical high water consumption industry. It consumes nearly 100 million tons of water every year, resulting in a large amount of dye wastewater, w...

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Problems solved by technology

Nafion membrane is a kind of cation exchange membrane composed of perfluorosulfonic acid anionic polymer. It is a commonly used organic carrier material for the preparation of heterogeneous Fenton reaction catalysts. It has the advantages of heat resistance, corrosion resistance and high strength. However, due to the high price of Nafion membrane, In practical application, problems such as the anti-oxidation ability and membrane fouling of the membrane also need to be considered, and these defects limit its application in the heterogeneous Fenton reaction catalyst support material (Wu Wei, Wu Chengcheng, Zhao Yaping, Heterogeneous Fenton technology degrades organic pollution Advances in Research on Biomaterials, Environmental Science and Technology, 2010, 06: 99-104); In addition, some polymeric organic compounds such as sodium alginate, etc., can also be used as immobilized carriers (Cruz A, Couto L, Esplugas S, et al. , Study of the contribution of homogeneous catalysis on heterogeneous Fe(III)/alginatemediated photo-Fenton process, Chemical Engineering Journal, 2016, 318: 272-280), but this type of support is difficult to withstand the oxidation corrosion of OH

Among inorganic materials, alumina is a common catalyst carrier, and molecular sieves are also often used as catalyst carriers (Zhou Yaliang, Huang Dongyue, Types and Research Progress of Fenton Reaction Technology, Guangdong Chemical Industry, 2013, 40(1): 74-74 ); clay, the main component of which is kaolin, is often used as a carrier of iron ions (Li Huanyu, Research Progress in the Treatment of Organic Pollutants by Heterogeneous Fenton Reaction, Architecture and Budget, 2015, 06: 47-50), with inorganic materials as carriers The heterogeneous Fenton reaction catalyst has the advantages of low cost, high specific surface area and strong adsorption capacity, but the catalyst preparation process is complicated, and the powder catalyst is difficult to recycle, and its application is restricted

Iron oxides mainly exist in natural ores. Magnetic materials include magnetite, maghemite, perovskite, lepidocite, and spinel. Non-magnetic materials include hematite and goethite. Iron oxide The material has the characteristics of large specific surface area, high catalytic activity and high recovery rate, and can be used as a heterogeneous Fenton reaction catalyst (Khataee A, Taseidifar M, Khorram S, et al., Preparation of nanostructured magnetite with plasma for degradation of