Activation of persulfate, method of removing pollutants, application
A technology for activating persulfate and persulfate, which is applied in the field of pollutant treatment, can solve the problems of inability to remove nitrate nitrogen and simultaneous removal of COD and TN, so as to improve degradation efficiency and removal effect, high-efficiency activation, The effect of broad application prospects
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Embodiment 1
[0047] 1) Selection of iron ion source:
[0048] The source of ferrous iron selected in this embodiment is ferrous sulfate heptahydrate.
[0049] 2) Selection of persulfate:
[0050] The persulfate selected in this embodiment is sodium persulfate.
[0051] 3) Selection of complexing agent: acetylacetone
[0052] 4) The specific degradation process is implemented according to the following steps:
[0053] Take an aqueous solution of p-chlorophenol (concentration: 20mg / L) within the range of pH 10-12, add acetylacetone: Fe 2+ : The molar ratio of sodium persulfate is 1:20:8, the total volume is 50ml, and the reaction degradation is carried out at 30°C and 200rpm shaking table for 25min;
[0054] Take 3ml of the reaction-degraded solution in a 10ml centrifuge tube, extract it with an equal volume of ethyl acetate, pass through a 0.22um water filter membrane, and perform 20 minutes of HPLC to detect that the degradation rate of p-chlorophenol (4-CP) is 95%. The landfill leach...
Embodiment 2
[0056] 1) Selection of iron ion source:
[0057] The source of ferrous iron selected in this embodiment is ferrous acetate and ferrous sulfate heptahydrate.
[0058] 2) Selection of persulfate:
[0059] The persulfate selected in this embodiment is sodium persulfate.
[0060] 3) Selection of complexing agent: acetylacetone
[0061] 4) The specific degradation process is implemented according to the following steps:
[0062] Take an aqueous p-chlorophenol solution (concentration of 20mg / L) adjusted to a pH value of 8-9, add acetylacetone: Fe 2+ : The molar ratio of sodium persulfate is 5:1:1, the total volume is 50ml, and the reaction degradation is carried out at 35°C and 210rpm shaking table for 30min;
[0063] Take 3ml of the reaction-degraded solution in a 10ml centrifuge tube, extract with an equal volume of ethyl acetate, pass through a 0.22um water filter membrane, and use HPLC for 20 minutes to detect that the degradation rate of p-chlorophenol (4-CP) is 96%. The l...
Embodiment 3
[0065] 1) Selection of iron ion source:
[0066] The source of ferrous iron selected in this embodiment is ferrous chloride tetrahydrate.
[0067] 2) Selection of persulfate:
[0068] The persulfates selected in this embodiment are potassium persulfate and sodium persulfate.
[0069] 3) Selection of complexing agent: acetylacetone
[0070] 4) The specific degradation process is implemented according to the following steps:
[0071] Take an aqueous p-chlorophenol solution (concentration of 20mg / L) adjusted to a pH value of 8-9, add acetylacetone: Fe 2+ : The molar ratio of sodium persulfate is 2:15:7, the total volume is 50ml, and the reaction degradation is carried out at 20°C and 250rpm shaking table for 60min;
[0072] Take 3ml of the degraded solution in a 10ml centrifuge tube, extract it with an equal volume of ethyl acetate, pass it through a 0.22um water filter membrane, and use high performance liquid chromatography to detect that the degradation rate of p-chlorophe...
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