Biomass carbon and carbon nitride composite soil remediation agent and method for remediating fomesafen pollution in soil by using biomass carbon and carbon nitride composite soil remediation agent
A soil remediation agent, fomesafen technology, is applied in the field of pesticide pollution remediation, and can solve the problems of fomesafen pollution, diphenyl ether herbicide pollution, lack of cheap and effective products, etc.
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Embodiment 1
[0032] Embodiment 1: a method for repairing fomesafen pesticide pollution in soil, comprising the following steps:
[0033] (1) Select the corn stalks near the metal mining area as biomass resources, air-dry indoors to constant weight, pulverize with a planetary ball mill, work for 1 hour, fill rate 25%, and volume ratio of pellets to 2.5. After cooling to room temperature, the powder will pass through. 200 mesh sieve;
[0034] (2) Mix the above powder with soluble carbonate and distilled water, the mass fractions of which are 10%, 5% and 85% respectively, transfer to a stainless steel reaction kettle lined with PTFE, and heat up to 180 ℃ for 8.5h reaction , filtered to obtain the solid, washed the solid three times with 1% phosphoric acid solution and ethanol with 15 times the solid mass respectively, and vacuum-dried at 60 °C for 24 h to obtain primary biomass carbon;
[0035] (3) Put the above-mentioned primary biomass carbon into a quartz crucible, heat it up to 950°C for...
Embodiment 2
[0046] Embodiment 2: a method for repairing fomesafen pesticide pollution in soil, comprising the following steps:
[0047] (1) Select the corn stalk near the metal mining area as the biomass resource, dry it indoors naturally to constant weight, and pulverize it with a planetary ball mill. The working time is 1.5h, the filling rate is 30%, and the volume ratio of ball to material is 2.5. After cooling to room temperature, the powder is Pass through 150 mesh sieve;
[0048] (2) Mix the above powder with soluble carbonate and distilled water, the mass fractions of which are 8%, 4% and 88%, respectively, transfer to a stainless steel reaction kettle lined with PTFE, and heat up to 170 ℃ and react for 8 hours, The solid was obtained by filtration, washed three times with 1% phosphoric acid solution and ethanol with 13 times the solid mass respectively, and vacuum-dried at 70 °C for 20 h to obtain primary biomass carbon;
[0049] (3) Put the above-mentioned primary biomass carbon...
Embodiment 3
[0054] Embodiment 3: a method for repairing fomesafen pesticide pollution in soil, comprising the following steps:
[0055] (1) Select the sorghum straw near the metal mining area as the biomass resource, dry it naturally indoors to constant weight, pulverize it with a planetary ball mill, work for 1h, fill rate 35%, and volume ratio of pellets to 2.5. After cooling to room temperature, the powder passes through. 100 mesh sieve;
[0056] (2) Mix the above powder with soluble carbonate and distilled water, the mass fractions of which are 8%, 3% and 89%, respectively, transfer to a stainless steel reaction kettle lined with PTFE, and heat up to 160 °C and react for 7 hours , filtered to obtain a solid, washed the solid three times with 1% phosphoric acid solution and ethanol with 12 times the solid mass respectively, and vacuum-dried at 70 °C for 16 h to obtain primary biomass carbon;
[0057] (3) Put the above-mentioned primary biomass carbon into a ceramic crucible, heat it u...
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Abstract
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