Preparation method and application of environmental functional material rich in persistent free radicals

By preparing environmental functional materials rich in persistent free radicals and using agricultural waste as raw materials, the problem of treating recalcitrant pollutants and heavy metals in water bodies has been solved, achieving efficient removal and resource utilization, and yielding good environmental and economic benefits.

CN122079154APending Publication Date: 2026-05-26XIANGHU LABORATORY
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Patent Information

Application Number
CN202610353249.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-23
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively remove new, recalcitrant pollutants and heavy metals from water bodies, and traditional treatment processes are inefficient and environmentally unfriendly.

Method used

Using agricultural waste as raw material, environmental functional materials rich in persistent free radicals are prepared through mechanical crushing, sieving, alkali modification and temperature-controlled pyrolysis. The high specific surface area and the synergistic effect of persistent free radicals are utilized to achieve the adsorption and catalytic degradation of pollutants.

Benefits of technology

It significantly improves the specific surface area and persistent free radical concentration of biochar materials, achieving efficient removal of recalcitrant organic pollutants and stable fixation of heavy metals in water bodies, realizing high-value-added resource utilization of agricultural waste, and possessing good environmental and economic benefits.

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Abstract

The invention discloses a preparation method and application of an environmental functional material rich in persistent free radicals, and the preparation method comprises the following steps: mechanically crushing agricultural wastes, screening, washing with deionized water, and drying to constant weight; mixing the obtained agricultural waste powder with alkali according to a specific mass ratio, adding deionized water, uniformly stirring at room temperature to promote full reaction, and then transferring the mixture into a crucible for drying; under the protection of nitrogen atmosphere, the precursor is placed in a tubular furnace for pyrolysis, and finally the biochar material with the high content of persistent free radicals is prepared. Through a three-step method of raw material pretreatment, alkali modification and temperature-controlled pyrolysis, agricultural wastes which are wide in source and low in cost are efficiently converted into an environmental functional material which is stable in structure and excellent in performance, and the method is simple in technological process, low in cost and environmentally friendly and has good practicability and popularization and application prospects.
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