cn x Preparation of modified diatomite and method of using it to adsorb Congo red wastewater
A technology of diatomite and water bath, which is applied in chemical instruments and methods, adsorption water/sewage treatment, energy wastewater treatment, etc., can solve the problems of high price, and achieve the effect of fast adsorption rate, simple and quick steps, and low cost
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Embodiment 1
[0027] Step 1, add melamine and diatomite to the beaker (open system) according to the mass ratio of 1:1, then add a certain amount of dilute nitric acid, wherein the mass volume ratio of diatomite to nitric acid is (1g:10ml), control the beaker The temperature is 70°C, the stirring speed is 120rpm, after reacting for 1 hour, filter, take the filtrate, and place it in a drying oven for drying.
[0028] Step 2: Place the dried filtrate in a crucible and calcinate in a muffle furnace for 2 hours at a calcination temperature of 150°C to obtain CN X Loaded diatomaceous earth composites.
[0029] Step 3, take CN X Add 0.1g of the loaded diatomite composite material into 20ml of Congo red with a concentration of 2000mg / L, and disperse it by ultrasonic at room temperature for 2min to make CN X The loaded diatomite composite material is uniformly dispersed and fully reacts with Congo red molecules. After the reaction, the obtained reaction solution was filtered and separated to obt...
Embodiment 2
[0032] Step 1, add diatomite and diatomite in beaker (open system) by mass ratio 1:1.5, then add a certain amount of nitric acid, wherein the mass volume ratio of diatomite to nitric acid is (1g:10ml), control The temperature of the beaker was 70° C., the stirring speed was 120 rpm, and after reacting for 1 hour, it was filtered, and the filtrate was taken and placed in a drying oven for drying.
[0033] Step 2: Place the dried filtrate in a crucible and calcinate in a muffle furnace for 2 hours at a calcination temperature of 150°C to obtain CN X Loaded diatomaceous earth composites.
[0034] Step 3, take CN X Add 0.1g of the loaded diatomite composite material into 20ml of Congo red with a concentration of 2000mg / L, and disperse it by ultrasonic at room temperature for 2min to make CN X The loaded diatomite composite material is uniformly dispersed and fully reacts with Congo red molecules. After the reaction, the obtained reaction solution was filtered and separated to o...
Embodiment 3
[0037] Step 1, add diatomite and diatomite in beaker (open system) by mass ratio 1:2, then add a certain amount of nitric acid, wherein the mass volume ratio of diatomite to nitric acid is (2g:10ml), control The temperature of the beaker was 70° C., the stirring speed was 120 rpm, and after reacting for 1 hour, it was filtered, and the filtrate was taken and placed in a drying oven for drying.
[0038] Step 2, place the dried filtrate in a crucible, and place it in a muffle furnace for calcination for 2 hours at a calcination temperature of 250°C to obtain CN X Loaded diatomaceous earth composites.
[0039] Step 3, take CN X Add 0.1g of the loaded diatomite composite material into 20ml of Congo red with a concentration of 2000mg / L, and disperse it by ultrasonic at room temperature for 2min to make CN X The loaded diatomite composite material is uniformly dispersed and fully reacts with Congo red molecules. After the reaction, the obtained reaction solution was filtered and ...
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