A kind of green catalyst and method for treating organic wastewater
An organic waste water and catalyst technology, applied in chemical instruments and methods, oxidized water/sewage treatment, physical/chemical process catalysts, etc. problems, to achieve the effect of simplified processing steps and device structure, easy control of process parameters, and convenient industrial operation.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] A treatment method for organic wastewater containing nitrophenol, first prepare a certain amount of catalyst, a microwave device, a UV spectrophotometer, a centrifuge and 100mL of organic wastewater containing nitrophenol concentration of 100mg / L .
[0030] The catalyst uses g-CN-Bi 2 o 2 CO 3 (Graphite phase carbon nitride supported bismuth oxycarbonate), its preparation method is specifically: drop graphite phase carbon nitride into ammonium carbonate solution, ultrasonic treatment obtains suspension; Then dropwise add bismuth nitrate solution in this suspension Stir; the precipitate is washed with deionized water and ethanol, filtered, and then dried overnight to obtain a solid; the solid is calcined to obtain g-CN-Bi 2 o 2 CO 3 Catalyst, wherein: the molar ratio of carbonate ions in the ammonium carbonate solution to bismuth ions in the bismuth nitrate solution is 1:2, and the amount of graphite phase carbon nitride, ammonium carbonate, bismuth nitrate and othe...
Embodiment 2- Embodiment 4
[0040] Embodiment 2-embodiment 4 differs from embodiment 1 only in that the raw material composition of catalyst in table 1 is different and the parameter in table 2 (embodiment 1-embodiment 4 has investigated the g-CN-Bi of different proportions 2 o 2 CO 3 effect on the degradation rate of nitrophenol in wastewater).
[0041] Embodiment 2-embodiment 4 sees Table 2 and figure 1 shown.
[0042] From Table 2 and figure 1 It can be seen that when the content of bismuth oxycarbonate in the catalyst is high, the degradation rate is high, and as the content of bismuth oxycarbonate gradually decreases (Example 2-Example 4), the degradation rate decreases to 27.62%.
Embodiment 5- Embodiment 7
[0044] Embodiment 5-Example 7 differs from Example 1 only in that the raw material composition of the catalyst in Table 1 is different and the parameters in Table 2 (Example 1 investigated the same proportion of g-CN in conjunction with Example 5-Example 7 -Bi 2 o 2 CO 3 Effect of different irradiation time on the degradation rate of nitrophenol in wastewater).
[0045] Embodiment 5-embodiment 7 sees Table 2 and figure 1 shown.
[0046] From Table 2 and figure 1 It can be seen that with the prolongation of the microwave irradiation time, the degradation rate gradually increases, but when the irradiation time increases from 3 min to 7 min, the change of the degradation rate does not increase significantly, mainly because the electron-hole pairs that the green catalyst can generate have reached the maximum. To a greater extent, nitrophenols cannot be degraded.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More