Xinhua News Agency, Hefei, September 8 (Reporter Xu Haitao) Antibacterials are widely used in clinical treatment, but the residues of some drugs in the environment also pose a threat to human health. Recently, Huang Qing, a researcher of Hefei Institute of Material Sciences, Chinese Academy of Sciences, has cooperated with enterprises to find that low temperature plasma technology can efficiently and rapidly degrade the residues of norfloxacin, oxytetracycline and other antibiotics in medical wastewater. The results have been published recently in the International Journal of environmental sciences, Photochemical Layer.
Wastewater discharged from hospitals, pharmaceutical industries and aquaculture industries often contains many antibiotic residues. If these wastewater is discharged directly without treatment, it will seriously affect the ecological balance and threaten human health. Plasma is considered as the fourth state of substances outside solid, liquid and gas, and has shown broad application prospects in many fields such as industry, agriculture, biomedicine and so on in recent years.
Researcher Huang Qing, in cooperation with enterprises, proposed a scheme of using plasma biotechnology to treat wastewater and degrade antibiotics. Recently, they took norfloxacin as an antibiotic for example, and found that ozone produced by plasma could defluorinate norfloxacin, resulting in the breakage of carboxyl and quinolone groups in norfloxacin. Experiments show that norfloxacin can be degraded rapidly and efficiently. At the same time, this technology can degrade oxytetracycline, tetracycline, chlortetracycline, doxycycline and other antibiotics.
According to reports, this treatment technology is simple, easy to operate, low cost and no secondary pollution. It has been successfully applied to more than 40 sewage treatment cases. It is of great significance to develop new practical medical and aquaculture wastewater treatment technologies.
Source: Xinhua responsible editor: Wang Fengzhi_NT2541