A method for removing polychlorinated biphenyl compounds

CN119500762BActive Publication Date: 2026-07-14CHENGDU TECH UNIV

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: CHENGDU TECH UNIV
Filing Date: 2024-11-14
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

Existing technologies are ineffective and costly in removing polychlorinated biphenyls (PCBs), especially in soil, and are difficult to achieve effective degradation.

Method used

By combining *Myriophyllum spicatum* with nano-zero-valent iron, *Myriophyllum spicatum* is planted in the soil and nano-zero-valent iron is added. The redox properties of the roots of *Myriophyllum spicatum* and the adsorption effect of nano-zero-valent iron form an iron film, which promotes plant growth and adsorbs pollutants. Combined with microbial degradation, polychlorinated biphenyl compounds are removed.

Benefits of technology

It achieves efficient removal of polychlorinated biphenyl compounds from water and soil, improves the removal rate, and promotes the growth of Myriophyllum spicatum and the efficiency of microbial degradation.

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Abstract

The application discloses a method for removing polychlorinated biphenyl compounds, and relates to the field of pollutant treatment.The method comprises the following steps: putting nano zero-valent iron into soil, and planting stonewort in the soil; and the stonewort and the nano zero-valent iron are combined to effectively remove ammonia-nitrogen compounds and polychlorinated biphenyl compounds in water and soil.

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