Method for repairing organochlorine pesticide-polluted soil through microwave-enhanced sodium percarbonate
A technology of pesticide-contaminated soil and sodium percarbonate, applied in the field of organic-contaminated soil remediation, can solve the problems of easy reaction with soil organic matter, large waste of Fenton's reagent, easy ineffective decomposition, etc., and achieves high efficiency and fast degradation speed. Effect
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[0018] Example 1:
[0019] Prepare 40mL of muddy soil mixture (10g of soil, 50mg / kg of BHC in soil, add 40mL of deionized water to make the water-soil mass ratio 4:1), add 0.2g of Tween to the mixture 80, and then add 0.1g of sodium percarbonate, 0.05g of sodium citrate and 0.05g of ferrous sulfate. Put the muddy soil mixture into a microwave chemical reactor and set the microwave power to 200W. After 30 minutes, the degradation rate of BHC in the soil reached over 85%.
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[0020] Example 2:
[0021] Configure 50mL of mud mixture (10g of soil, 100mg / kg of BHC in soil, add 50mL of deionized water to make the water-soil mass ratio 5:1), add 0.25g of Triton 100 to the mixture , And then add 0.2g of sodium percarbonate, 0.1g of sodium citrate and 0.1g of ferrous sulfate. Put the muddy soil solution into a microwave chemical reactor, the microwave power is set to 300W, after 20 minutes of reaction, the degradation rate of BHC in the soil reaches more than 90%.
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