Remediation method for soil polluted by tetracycline antibiotics

Abstract

The invention discloses a remediation method for soil polluted by tetracycline antibiotics, and relates to the technical field of remediation of the polluted soil, in particular to the remediation method for the soil polluted by the tetracycline antibiotics. The method comprises the following specific steps: S1, grinding the waste biomass into powdery particles with the particle size of less than 100 meshes, adding soluble transition metal ferric salt according to the mass ratio of the soluble transition metal ferric salt to the biomass of 1: 5-1: 10, uniformly mixing water and the powdery particle biomass according to the solid-liquid ratio of 1: 5-1: 10, and carrying out hydrothermal carbonization reaction for 3-6 hours at the temperature of 180-240 DEG C under the protection of CO2 atmosphere to obtain the hydrothermal carbon. The method is easy to operate, the antibiotic-polluted soil does not need to be pretreated, and the cost is low; reaction conditions are mild, and normal temperature and normal pressure can be realized; the treatment efficiency is high, and a large amount of tetracycline antibiotics in soil can be removed in only 6 hours; no secondary pollution is generated; the hydrothermal carbon prepared from the biomass realizes waste recycling.

Description

technical field [0001] The invention relates to the technical field of remediation of contaminated soil, in particular to a remediation method of tetracycline antibiotic-contaminated soil. Background technique [0002] In recent years, with the rapid development of medical undertakings and livestock and poultry breeding, the problem of antibiotic pollution in soil has become increasingly serious. Tetracycline antibiotics are one of the most used antibiotics, and high concentrations have been detected in soil. Their chemical properties are stable, they are not easily degraded by microorganisms, and have a strong affinity with soil substances, so they will gradually increase in the soil environment. It has toxic effects on animals, plants and microorganisms. At the same time, some drug-resistant bacteria and resistance genes will appear and spread in soil, groundwater and other environments through transfer mechanisms, thereby causing harm to the ecological environment and hum...

AI Technical Summary

Problems solved by technology

Tetracycline antibiotics are one of the most widely used antibiotics. They have been detected in higher concentrations in the soil. Their chemical properties are stable, they are not easily degraded by microorganisms, and they have a strong affinity with soil substances. Therefore, they will gradually increase in the soil environment. It has toxic effects on animals, plants and microorganisms. At the same time, some drug-resistant bacteria and resistance genes will appear and spread in soil, groundwater and other environments through transfer mechanisms, thereby causing harm to the ecological environment and human health.

Although this type of non-metallic catalyst avoids the heavy metal pollution of the soil, it has the disadvantages of low catalytic activity, damage to the soil microbial community structure, and difficult recycling of materials, which hinder the wide application of this type of method. For this reason, we provide a tetracycline Remediation method of antibiotic-like contaminated soil

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