Method for producing sintered bricks by using organic contaminated soil
A technology for organic pollution and polluted soil, applied in the field of contaminated soil remediation and resource utilization, to achieve the effects of restoration and resource utilization, reduction of environmental risks, and reduction of organic matter content
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[0052] The preparation method of double metal oxide catalyst provided by the application comprises:
[0053] The first step is the preparation of graphene oxide; take 5g of graphite powder and 35g of potassium permanganate and mix evenly, weigh 300mL of concentrated sulfuric acid and 37g of potassium nitrate and mix them into a reaction vessel, place them in an ice bath environment, and mix them under magnetic stirring. , start to add the mixture of graphite powder and potassium permanganate, the addition speed is slow, keep the ice bath temperature, after the addition is completed, keep the reaction mixture solution at the temperature of the water bath at 60°C and stir for 24 hours, then put it in the ice bath environment Cool down to 5°C and start to slowly add 20ml of hydrogen peroxide. After the reaction solution turns yellowish brown completely, continue to stir for 25min to obtain a yellowish brown cloudy liquid, centrifuge and dehydrate, then pickle with 10% hydrochloric...
Embodiment 1
[0058] The preparation of embodiment 1 graphene oxide
[0059] Take 5g of graphite powder and 35g of potassium permanganate and mix evenly, weigh 300mL of concentrated sulfuric acid and 37g of potassium nitrate and mix them into a reaction vessel, place them in an ice bath environment, and start adding graphite powder and permanganate under magnetic stirring For the mixture composed of potassium, add slowly, keep the temperature of the ice bath, after the addition is completed, keep the reaction mixture solution at the temperature of a water bath at 60°C and stir for 24 hours, then put it in an ice bath environment to cool, and start to slow down when it drops to 5°C Add 20ml of hydrogen peroxide, and after the reaction solution turns yellowish brown completely, continue to stir for 25 minutes to obtain a yellowish brown turbid liquid, centrifuge and dehydrate, then pickle with 10% hydrochloric acid by mass percent and wash with deionized water until neutral. Obtain graphene o...
Embodiment 2
[0060] The preparation of embodiment 2 graphene-rutile titania mixed carrier
[0061] Take 150ml of deionized water and 600ml of isopropanol into the reaction container, then place it in an ice bath environment, add concentrated hydrochloric acid dropwise while stirring to adjust the pH value of the reaction solution to about 2, add the graphene oxide prepared in Example 1 , graphene oxide was added as a suspension in deionized water at a concentration of 0.5 mg·ml -1 , the added amount is 300ml, and then the concentration is 0.5mol L slowly added dropwise -1 TiCl 4 Aqueous solution 300ml, adjust the pH value of the reaction solution at 7 after the dropwise addition, transfer to a stainless steel autoclave lined with polytetrafluoroethylene, in an argon atmosphere, heat to 700°C for reaction, the heating rate is 2°C / min, and the temperature rises to 700°C °C for 2 hours to obtain a graphene-rutile titanium dioxide mixed carrier.
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