Method for treating methyl orange wastewater
A methyl orange, wastewater technology, applied in water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc.
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Embodiment 1
[0022] Weigh 28.4gNa 2 SiO 3 9H 2 O in a 250mL beaker, add 100mL of water to dissolve. Weigh 24.9gCo(OAC) 2 4H 2 O in another 250mL beaker, add 100mL of water to dissolve, slowly add to the sodium silicate solution under stirring, age in a water bath at 80-90°C for 30 minutes, cool to room temperature, filter with suction, and wash Until the filtrate became neutral, it was dried in a drying oven at 105°C for 5 hours to obtain 15.0 g of gray-blue cobalt silicate.
[0023] Prepare methyl orange wastewater, take 100mL concentration to be 10mg·L -1 Add 0.0270g of cobalt silicate to a 250mL Erlenmeyer flask, place it in a water bath at 35°C, and add 30% (mass fraction) hydrogen peroxide under constant temperature magnetic stirring to make the hydrogen peroxide in the wastewater The concentration is 0.0360mol L -1 , reacted for 60 minutes, the color removal rate of methyl orange wastewater reached 95.29%.
Embodiment 2
[0025] In order to prove the influence of temperature on the chroma removal rate of methyl orange wastewater, the synthesis was carried out according to the parameters in Table 1.
[0026] Table 1
[0027]
[0028] It can be seen from Table 1 that as the temperature increases, the chromaticity removal first increases and then decreases slowly, reaching the highest at 35°C; when there is no cobalt silicate in the methyl orange wastewater, the chromaticity removal rate is 0.
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