A method of using growth-promoting bacteria to strengthen phytoremediation of uranium-contaminated soil in arid regions

Abstract

A method for using growth-promoting bacteria to strengthen plants to restore uranium-contaminated soil in arid areas, which comprises soaking the seeds of Boluohui in sodium hypochlorite solution for disinfection, rinsing them with sterile water, and then directly inoculating Boluohui with Pseudomonas fluorescens During the germination process, the seeds were sprayed with Pseudomonas fluorescens suspension, and the germinated seedlings were transplanted into pots inoculated with Pseudomonas fluorescens suspension. After cultivation, they were transplanted into uranium-contaminated dry soil, and the plants were watered with Pseudomonas fluorescens Bacterial suspension, after 120‑150 days, the plants are harvested and processed intensively. The present invention uses uranium-enriching plants Pseudomonas fluorescens and Pseudomonas fluorescens as materials to solve the problem of environmental hazards of uranium-contaminated soil in existing arid regions. Low cost, low environmental risk, and can beautify the environment. It is especially suitable for the remediation of uranium-contaminated soil around uranium-containing solid waste storage sites such as uranium mines, water smelting plants, and uranium waste ores and tailings ponds in the arid areas of northern my country.

Description

technical field [0001] The invention relates to the technical field of uranium-contaminated soil phytoremediation, in particular to a method for using growth-promoting bacteria to strengthen phytoremediation of uranium-contaminated soil in arid regions. Background technique [0002] Uranium-contaminated soil is mainly produced by human activities such as uranium mining and smelting, nuclear weapons testing, and nuclear accident leakage. Uranium is a highly toxic radioactive element, and its toxicity is mainly manifested as chemical and radioactive toxicity, which is extremely harmful to the human body. Uranium in contaminated soil may enter the human body through the food chain, increasing the risk of human cancer. The remediation of uranium-contaminated soil is related to the sustainable development of the nuclear industry and human health, and has become an urgent environmental problem to be solved. [0003] In recent years, phytoremediation technology has attracted peop...

AI Technical Summary

Problems solved by technology

At present, most plants with super-enrichment or enrichment capacity for uranium have problems such as low biomass, limited expansion depth of plant roots, and poor adaptability of plants to the environment. Therefore, how to increase the biomass of plants and improve the environmental protection of plants The resistance of uranium has become a key technology for phytoremediation of uranium-contaminated soil