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

A technology of thioacetamide and crystalline particles, which is applied in water/sludge/sewage treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of small size, difficult separation, redissolution, etc., and achieve improvement Effect of removal capacity and removal ability, reduction of mobility, promotion of separation

Inactive Publication Date: 2011-05-25
HUNAN UNIV
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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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  • Application of thioacetamide in aspect of promoting extracellular cadmium crystalline particles to aggregate and grow
  • Application of thioacetamide in aspect of promoting extracellular cadmium crystalline particles to aggregate and grow
  • Application of thioacetamide in aspect of promoting extracellular cadmium crystalline particles to aggregate and grow

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Embodiment

[0023] A kind of application of thioacetamide of the present invention in promoting the growth of extracellular cadmium crystal particles of white-rot fungi (the white-rot fungus used in this embodiment is Versicolor versicolor) specifically comprises the following steps:

[0024] 1. Culture strains:

[0025] Select 4 colonies of Versicolor versicolor ACCC 51171 (China Agricultural Microorganism Culture Collection and Management Center, which can be purchased from the Institute of Agricultural Resources and Agricultural Division, Chinese Academy of Agricultural Sciences) with a diameter of 0.5 mm from the plate medium and inoculate them in the liquid medium , put a glass bead with a diameter of 10 mm in the culture bottle, and culture it for 3 days at a temperature of 25°C-30°C and a shaker speed of 150rpm-200rpm to make a mycelial suspension; then quantitatively inoculate 2mL of mycelial suspension into the liquid culture medium, at a temperature of 25-30° C. and a shaker rot...

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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...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 邹正军陈桂秋曾光明范佳琦陈安伟张文娟王亮
Owner HUNAN UNIV
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