Treatment method of methylene blue dye waste water
A methylene blue dye and treatment method technology, which is applied in the field of methylene blue dye wastewater treatment, can solve the problems of small adsorption capacity and harsh environmental conditions, and achieve the effects of fast adsorption rate, good hydrophilicity, easy elution and reuse
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Embodiment 1
[0022] A treatment method for methylene blue dye wastewater, comprising the following steps:
[0023] (1) Preparation of adsorbent:
[0024] Dissolve 2g of 1,4,7,10-tetraazacyclododecane, 1.5g of potassium iodide and 6g of potassium carbonate in 200ml of tetrahydrofuran, under nitrogen protection, add 1g of chlorine-functionalized mesoporous silica, and keep stirring Reflux for 20 hours, cool to room temperature after the reaction, filter to obtain the product, alternately wash with ethanol and water for 2-5 times, and vacuum dry at 60°C for 12 hours to obtain a modified silica adsorbent;
[0025] (2) Add 0.5 g of the modified silica adsorbent prepared in step (1) to every liter of methylene blue dye wastewater, and adjust the pH of the dye wastewater to 5-10, and stir for 24 hours at 3000 rpm , standing and filtering to remove the adsorbent adsorbed with methylene blue dye, that is, removing the methylene blue dye in the wastewater.
Embodiment 2
[0027] A treatment method for methylene blue dye wastewater, comprising the following steps:
[0028] (1) Preparation of adsorbent:
[0029] Dissolve 5g of 1,4,8,11-tetraazacyclotetradecane, 1,4,8,12-tetraazacyclopentadecane, 3.5g of potassium iodide and 11g of potassium carbonate in 400ml of acetonitrile, under nitrogen protection, Add 1.2g of chlorine-functionalized mesoporous silica, reflux reaction for 40h under continuous stirring, cool to room temperature after the reaction, filter to obtain the product, alternately wash with ethanol and water for 2-5 times, and vacuum dry at 80°C for 16h. obtain a modified silica adsorbent;
[0030] (2) Add 0.8 g of the modified silica adsorbent prepared in step (1) to every liter of methylene blue dye wastewater, and adjust the pH of the dye wastewater to 5-10, and stir for 48 hours at 5000 rpm , standing and filtering to remove the adsorbent adsorbed with methylene blue dye, that is, removing the methylene blue dye in the wastewater...
Embodiment 3
[0032] A treatment method for methylene blue dye wastewater, comprising the following steps:
[0033] (1) Preparation of adsorbent:
[0034] Dissolve 3g of 1,4,8,12-tetraazacyclopentadecane, 2g of potassium iodide and 7g of potassium carbonate in 250ml of toluene, under nitrogen protection, add 1.05g of chlorine-based functionalized mesoporous silica, and keep stirring Under reflux for 25 hours, cool to room temperature after the reaction, filter to obtain the product, alternately wash with ethanol and water for 2-5 times, and vacuum dry at 65°C for 13 hours to obtain a modified silica adsorbent;
[0035] (2) Add 0.6 g of the modified silica adsorbent prepared in step (1) to every liter of methylene blue dye wastewater, and adjust the pH of the dye wastewater to 5-10, and stir for 30 hours at 3500 rpm , standing and filtering to remove the adsorbent adsorbed with methylene blue dye, that is, removing the methylene blue dye in the wastewater.
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