The invention relates to a preparation method of a multivalent nanometer
manganese oxide for effectively removing organic pollutants in water. The method comprises the following steps: preparing a medium by using
yeast extract
powder, acid hydrolyzed
casein, glucose,
HEPES, CaCl2, MgSO4, FeCl3 and trace elements (CuSO4, ZnSO4, CoCl2 and NaMoO4), adjusting the pH value to 6-8 by using 3M of NaOH, carrying out high temperature and
high pressure disinfection, inoculating
Pseudomonas sp.G7 according to 1%(V / V), carrying out shaking culture in a 20-30DEG
C constant temperature culturing box for 20-30h, adding 0.3-0.5mM of a filtered and disinfected
aqueous solution of MnCl2, continuously shaking for 12-15d, and washing the obtained precipitate with deionized water to obtain the multivalent nanometer
manganese oxide. The above material has very good catalytic activity and stability, 2-
chlorophenol converts to
formic acid,
acetic acid,
oxalic acid and other micro-molecular organic acids in the
degradation process, and the generation of a
superoxide radical by the multivalent activated molecule
oxygen of
manganese is the main reason causing efficient degradation.