A water treatment method utilizing graphene oxide to catalyze ozone
A graphene and water treatment technology, applied in oxidation water/sewage treatment, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as limitation and low reaction rate, achieve fast oxidation rate, easy availability of raw materials, The effect of enriching oxygen-containing groups
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example 1
[0038] Example 1: Combination of Graphene Oxide (GO) and Ozone
[0039] Add graphene oxide to the ozone reactor equipped with 1mmol / L oxalic acid aqueous solution whose pH has been adjusted by phosphate, so that the mass concentration of graphene oxide is 20mg / L, the feed concentration is 10mg / L, and the flow rate is 0.4NL / min of ozone, using ozone to aerate the oxalic acid aqueous solution added with graphene oxide, sampling every 20min, removing graphene oxide by filtration with a 0.22 μm syringe filter, and measuring the concentration of oxalic acid. Wherein, the residence time of the oxalic acid aqueous solution in the ozone reactor is controlled to be 60 minutes, and the state of stirring and passing ozone is kept during the water treatment process. Then draw the removal rate graph, such as figure 1 Histogram in GO+O 3 shown.
[0040] In the first example, the graphene oxide can be added directly in the form of solid graphene oxide or in the form of graphene oxide sol...
example 2
[0047] Example 2: Graphene oxide (GO) combined with ozone
[0048] Add graphene oxide in the ozone reactor that is equipped with the 50 μ mol / L DEET solution that has adjusted pH through phosphate, make the mass concentration of graphene oxide be 20mg / L, pass into concentration and be 5mg / L, flow rate is 0.4NL / min of ozone, use ozone to aerate the DEET solution added with graphene oxide, take samples every 2min, filter the graphene oxide with a 0.22μm syringe filter, and measure the DEET concentration. Among them, the residence time of the DEET solution in the ozone reactor is controlled to be 10 minutes, and the state of stirring and ozone is kept during the water treatment process. Then draw the removal rate graph, such as figure 2 Histogram in GO+O 3 shown.
[0049] In the second example, the graphene oxide can be added directly in the form of solid graphene oxide or in the form of graphene oxide solution. The phosphate can be added directly in the form of solid phosph...
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