Novel magnetic active carbon and preparation method thereof

Abstract

The invention discloses a novel magnetic active carbon and a preparation method thereof. The novel magnetic active carbon is a composite material of powdered active carbon (PAC) and nano iron oxide (Fe3O4). Reaction is finished by feeding an alkaline liquid medium into a reaction system Fe<3+> / Fe<2+> (mole ratio)=2 which takes the powered active carbon as a carrier by adopting a chemical co-precipitation method; the ratio of PAC to the iron oxide in the magnetic active carbon is adjusted by controlling the PAC feeding amount so as to optimize the performance of the material. The preparation method has the advantages of simple operation, quickness, batch production, high reproducibility and the like. The novel magnetic active carbon has the performances of large adsorption amount, easiness in separation, recycling and regeneration, good repeated use effect and the like; the problems that the conventional PAC is high in difficulty when separated from treated wastewater and easy to lose, and cannot be regenerated, and the treatment cost is high are well solved; regeneration can be easily and efficiently realized by feeding H2O2, so that the treatment cost of the adsorption technology is reduced, and the feasibility of application of the novel magnetic active carbon into actual engineering and the market competitiveness are improved.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to magnetic activated carbon and a preparation method thereof. technical background [0002] With the maturity of activated carbon treatment technology, activated carbon technology has been widely used in many fields as a water treatment technology capable of removing various pollutants. People often use this method as a general treatment method to solve various sewage problems (such as printing and dyeing wastewater). Activated carbon can be divided into two categories according to its size: powder activated carbon (PAC) and granular activated carbon (GAC). It has the disadvantages of light specific gravity, difficulty in separating from treated water, easy loss, non-recyclable, and high treatment cost. Powdered activated carbon is almost always used once in my country, and it is usually combined with other processes (such as coagulation, activated sludge method) to enhance the trea...

AI Technical Summary

Problems solved by technology

In recent years, one of the solutions is to improve the adsorption performance and magnetic separation characteristics of synthetic materials by loading magnetic nano-substances on the adsorption materials, but there are often problems such as complex preparation conditions and difficulty in mass production. In addition, how to achieve The simple and effective means of regeneration of adsorption materials is also the key point in the improvement process of adsorption materials.

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