Absorption, transformation and degradation of organic pollutants by transgenic plants

Organic pollutants that remain in the soil, water, and atmosphere, such as petroleum-derived hydrocarbons, PCBs, PAHs, chlorine-containing solvents, explosives, and organic pesticides, are mostly persistent organic pollutants. Pollutants, POPs); They are chemically stable, difficult to biodegrade, and easy to enrich in organisms. These organic pollutants will not only reduce or eliminate crops, but also cause harmful effects on the ecological environment through plants and animals entering the food chain (Yi et al. 2002; Yang Liuchun et al. 2002). On the other hand, organic pollutants may cause various diseases such as cancer, malformation, and nervous system diseases after they accumulate in the human body, which seriously threatens human survival and health. In recent years, the overall environmental quality of our country has been continuously improving, but the pollution caused by organic pollutants has become more and more serious in many areas. It is imperative for environmental pollution control and restoration. There are different ways to repair environmental pollution, including physical, chemical, and biological pathways. Phytoremediation, microbial remediation, and animal repair belong to the category of bioremediation and are the most viable repair technologies (Ding et al. 2000). Among them, phytoremediation technology is the use of plants to eliminate environmental pollution caused by organic poisons and inorganic waste (Anderson 1993), which is considered to be an economic, effective, non-destructive method of environmental remediation and has great application prospects (Alkorta and Garbisu 2001). Plants can directly absorb organic contaminants and then remove them in different ways. Plants can also secrete various enzymes that convert or degrade organic contaminants through the catalytic action of enzymes. At the same time, plants can adsorb organic pollutants on the surface of roots and synergize with rhizosphere microorganisms to achieve degradation of organic pollutants. However, the process of removing pollutants with different properties is not the same (Liu Shiliang et al. 2003). Hydrophobic organic pollutants are easily adsorbed on the root surface, but they cannot be transferred to plants and can only be concentrated on the surface of the root system; hydrophilicity Strong organic contaminants are easily absorbed by the plant body and enter the plant directly without any adsorption process. After organic pollutants are absorbed, there will be a variety of destinations (Sang Weilian and Kong Fanxiang 1999; Shen Dezhong 1998). Some organic pollutants are decomposed by plants and their products are involved in the metabolic processes of the plant body, or transformed into non-toxic intermediate metabolites, and stored in plant cells, or completely degraded, mineralized into CO2 and H2O; some organic pollutants are in the plant The body forms other non-toxic stable complexes with other organic compounds; there are also some organic pollutants transported by the xylem and then volatilized from the leaf surface through the transpiration of the plant. However, the bioremediation capacity of plants is very limited. To reach the level of application, it is necessary to greatly increase the plant's absorption, transformation and degradation levels of organic pollutants, and to improve the main factors affecting bioremediation efficiency. In recent years, the development of plant transgenic technology has provided a good opportunity for the application of phytoremediation technology. Many researchers have attempted to use transgenic technology to modify the characteristics of plants to enhance their ability to absorb, enrich, transform, and degrade organic pollutants. With the development of transgenic technology and people's deep understanding of the mechanism of plant degradation of organic pollutants, people's ability to transform plants will become stronger and stronger, and a large number of transgenic plants that are more suitable for environmental pollution restoration will emerge one after another.

Removable Oxygen Cylinder Filling System

Compressed air is purified through the air dryer and filters to a certain level for main plant to work with. Air buffer is incorporated for smooth supply of compressed air thus to reduce fluctuation of compressed air source. The plant produces oxygen with PSA (pressure swing adsorption) technology, which is a time proven oxygen generation method. Oxygen of desired purity at 93%±3% is delivered to oxygen buffer tank for smooth supply of product gas. Oxygen in buffer tank is maintained at 4bar pressure and fill in cylinder with an oxygen booster and compress the oxygen purity to 150bar. 

With a customized container, all the parts can be involved in, and removable with a vehicle. 


Removable Oxygen Cylinder Filling System

Removable Oxygen Cylinder Filling System,Oxygen For Cylinder Filling,Oxygen Refilling,Oxygen Bottle Refilling Plant

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