Chemical repairing method for organic pollution soil
A technology for polluted soil and chemical remediation, applied in the field of soil remediation, can solve the problems of inability to react with organic pollutants, inability to remove organic pollutants, and fast decomposition rate of hydrogen peroxide, and to overcome the problems of poor sustainability and non-toxicity. The effect of secondary pollution and rapid degradation
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Embodiment 1
[0023] (1) Treatment of organic matter-contaminated soil
[0024] Get 5.0g of p-chloronitrobenzene contaminated soil, wherein the concentration of p-chloronitrobenzene is 0.4mg / g, add potassium persulfate solution to make the concentration 0.06mmol / g, stir at room temperature; add hydrogen peroxide solution , to make the concentration 0.012mmol / g, stir at room temperature, and take samples for analysis at intervals of 1 hour. Simultaneously, get two parts of p-chloronitrobenzene contaminated soil 5.0g, only add potassium persulfate solution and hydrogen peroxide solution respectively, make its concentration be respectively 0.06mmol / g and 0.012mmol / g, stir under room temperature, interval 1 hourly sampling analysis.
[0025] (2) Analysis and determination of soil samples
[0026] Weigh 0.09g p-chloronitrobenzene-contaminated soil sample into a 7mL centrifuge tube, add 2mL methanol, ultrasonically extract for 20min, put the centrifuge tube into a centrifuge at 6000r / min for 3m...
Embodiment 2
[0029] (1) Treatment of organic matter-contaminated soil
[0030] Take 5.0g of p-chloronitrobenzene contaminated soil, wherein the concentration of p-chloronitrobenzene is 0.4mg / g, add sodium persulfate solution to make the concentration 0.01mmol / g, stir at room temperature; add hydrogen peroxide solution , to make the concentration 0.012mmol / g, stir at room temperature, and take samples for analysis at intervals of 1 hour. Simultaneously, get two parts of p-chloronitrobenzene contaminated soil 5.0g, only add sodium persulfate solution and hydrogen peroxide solution respectively, make its concentration be respectively 0.01mmol / g and 0.012mmol / g, stir under room temperature, interval 1 hourly sampling analysis.
[0031] (2) Analysis and determination of soil samples
[0032] With embodiment 1.
[0033] Na was added to p-chloronitrobenzene-contaminated soil 2 S 2 o 8 / H 2 o 2 、Na 2 S 2 o 8 and H 2 o 2 , the degradation rates of o-chloronitrobenzene were 48.1%, 20.3%...
Embodiment 3
[0035] (1) Treatment of organic matter-contaminated soil
[0036]Get 5.0g of p-chloronitrobenzene contaminated soil, wherein the concentration of p-chloronitrobenzene is 0.4mg / g, add ammonium persulfate solution to make the concentration 1.5mmol / g, stir at room temperature; add hydrogen peroxide solution , to make the concentration 0.002mmol / g, stir at room temperature, and take samples for analysis at intervals of 1 hour. Simultaneously, get two parts of p-chloronitrobenzene contaminated soil 5.0g, only add ammonium persulfate solution and hydrogen peroxide solution respectively, make its concentration be respectively 1.5mmol / g and 0.002mmol / g, stir under room temperature, interval 1 hourly sampling analysis.
[0037] (2) Analysis and determination of soil samples
[0038] With embodiment 1.
[0039] Adding (NH 4 ) 2 S 2 o 8 / H 2 o 2 , (NH 4 ) 2 S 2 o 8 and H 2 o 2 , the degradation rates of o-chloronitrobenzene were 88.6%, 84.7% and 2.4%, respectively.
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