Application of thioacetamide in aspect of promoting extracellular cadmium crystalline particles to aggregate and grow

Abstract

The invention discloses an application of thioacetamide in the aspect of promoting extracellular cadmium crystalline particles of white rot fungi to aggregate and grow, in particular an application in the aspect of promoting extracellular cadmium crystalline particles of Coriolus versicolor to aggregate and grow. The specific operation method is as follows: adding mycelium pellets of the white rot fungi into a solution containing cadmium; carrying out absorption reaction under the condition of oscillation at constant temperature to form cadmium nano crystalline particles on the surfaces of the white rot fungi after the reaction; and continuously adding the thioacetamide into the intermediate solution after the absorption reaction, carrying out size regulation reaction under the condition of oscillation at constant temperature, and then completing the aggregation and growth of the extracellular cadmium crystalline particles of the white rot fungi after full reaction. The invention has the advantages of effectively reducing the mobility of cadmium particles and obviously improving the removal capability of cadmium in the solution.

Description

technical field [0001] The invention belongs to the technical field of microbial remediation of heavy metal polluted wastewater, and in particular relates to the application of an organic compound in regulating the size of microbial extracellular cadmium crystal particles. Background technique [0002] The rapid development of industry has caused a large amount of heavy metal polluted wastewater to be discharged into the water body environment, which has caused serious poisoning and damage to the natural water ecological environment. The most common heavy metal in all kinds of industrial wastewater is cadmium, which is extremely toxic. After a certain amount of cadmium enters the human body, it may cause damage to the kidneys and liver, induce respiratory diseases or cardiovascular system diseases, and even cause cancer. Therefore, the removal of heavy metal cadmium in wastewater has become an important issue concerned by environmental chemistry researchers. [0003] The tr...

AI Technical Summary

Problems solved by technology

With the deepening of research on this technology, some researchers have found that some microorganisms convert heavy metals into extracellular nanocrystalline particles as their detoxification mechanism (such as Phanerochaete xanthophyllum, sulfate-reducing bacteria, etc.), but usually Under these conditions, these extracellular nanocrystalline particles are small in size, easy to move, not easy to separate, and may redissolve and pollute the water again

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