A method for preparing magnetic adsorption material from animal and plant waste

Abstract

The invention discloses a method for preparing a magnetic adsorption material from animal and plant wastes, and solves the problems that an existing magnetic adsorption material is poor in biodegradability and difficult to recycle, and the adsorption performance needs to be improved further. According to the technical scheme, crude fiber plant dregs are used as raw materials for preparation, hollow hydroxyapatite / copper ferrite nanoparticles are prepared through nanofiber crystallization, hydroxyapatite molding, medium-temperature template removal and copper ferrite loading, gelatin hydrolysate is prepared by ingeniously using animal waste gel, and hollow porous hydroxyapatite / copper ferrite nanoparticles are supported through crosslinking. According to the method, the process is simple, reaction conditions are mild, the raw materials are simple and easily available, the production cost is low, the method is easy to operate, the prepared adsorption material has high porosity and largespecific surface area, the adsorption performance of the material is greatly improved, the method has the advantages of repeated utilization and stable adsorption efficiency, complex water pollution can be treated, the recycling reproducibility and biodegradability are good, and the method is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for magnetic adsorption materials. Background technique [0002] With the rapid development of my country's economy, in recent years, heavy metal water pollution has been caused in metal smelting, electronics, printing and dyeing, and even household waste, which not only seriously endangers the ecological environment, but also threatens human health. Because heavy metals generally have great toxicity, high mobility and low poisoning concentration, they cannot be biodegraded in water, and are easy to accumulate in organisms, which will cause huge direct environmental damage and long-term potential harm. Therefore, heavy metal pollution has also become a major environmental pollution problem that has been concerned by people in recent years. [0003] At present, there are many methods for water treatment containing heavy metal pollution, mainly includi...

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Problems solved by technology

The above-mentioned documents all use chemical raw materials to synthesize magnetic adsorption materials by hydrothermal method or high-temperature roasting method, and there are the following technical problems: (1) The cost of raw material procurement is high, resulting in an increase in processing costs; (2) The porosity and density of the material are still low. It needs to be further improved, and the adsorption efficiency also needs to be improved; (3) usually only has an adsorption effect on one or more kinds of heavy metals, but for the field of water treatment, the pollution of the water body to be treated is often complicated, so a function is required. Comprehensive and effective adsorption material

(4) Poor biodegradability, difficult to recycle and regenerate

(5) Magnetic adsorption materials that need to be loaded on polymer substrates have many limitations due to the preparation temperature during synthesis

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