Preparation and application of a hypochlorite intercalated layered composite metal hydroxide
A hypochlorite and composite metal technology, which is applied in the field of water treatment to achieve the effects of good ion exchange capacity, wide application range and high treatment sensitivity
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Embodiment 1
[0025] A hypochlorite intercalated layered composite metal hydroxide for synergistically removing composite pollution in water, the preparation method of which comprises the following steps:
[0026] (1) Prepare 100ml of the first solution containing 150mmol L -1 Mg 2+ , 50mmol·L -1 Fe 3+ ; prepare another 100ml of the second solution containing 400mmol L -1 NaOH and 100mmol·L -1 Na 2 CO 3 ; Prepare another 20mmol·L -1 sodium hypochlorite solution.
[0027] (2) Add the above-mentioned configured first solution and second solution dropwise to a beaker containing 100ml of deionized water at the same time, stir vigorously during the dropwise addition, and control the pH value of the reaction process to remain at 9, and react The obtained slurry was aged at 60°C for 36 hours, and then solid-liquid separation was performed, and the obtained solid precipitate was washed with deionized water until the supernatant was neutral, then dried at 60°C, and calcined at 400°C , The o...
Embodiment 2
[0031] A hypochlorite intercalated layered composite metal hydroxide for synergistically removing composite pollution in water, the preparation method of which comprises the following steps:
[0032] (1) Prepare 100ml of the first solution containing 900mmol L -1 Mg 2+ , 285mmol·L -1 Fe 3+ and 15mmol·L -1 Ce 3+ , prepare another 100ml of the second solution, containing 4800mmol·L -1 NaOH and 1200mmol·L -1 Na 2 CO 3 , another preparation of 100mmol·L -1 sodium hypochlorite solution.
[0033](2) Add the above-mentioned configured first solution and the second solution dropwise to a beaker containing 100ml of deionized water at the same time, stir vigorously during the dropwise addition, and simultaneously control the pH value of the reaction process to remain at 10. The obtained slurry was aged at 70°C for 24 hours, and then solid-liquid separation was performed, and the obtained solid precipitate was washed with deionized water until the supernatant was neutral, then ...
Embodiment 3
[0037] A hypochlorite intercalated layered composite metal hydroxide for synergistically removing composite pollution in water, the preparation method of which comprises the following steps:
[0038] (1) Prepare 100ml of the first solution containing 300mmol L -1 Mg 2+ , 95mmol·L -1 Fe 3+ and 5mmol·L -1 Ce 3+ , prepare another 100ml of the second solution containing 800mmol·L -1 NaOH and 200mmol·L -1 Na 2 CO 3 , another preparation of 100mmol·L -1 sodium hypochlorite solution.
[0039] (2) Add the above-mentioned configured first solution and second solution dropwise to a beaker containing 100ml of deionized water at the same time, stir vigorously during the dropwise addition, and simultaneously control the pH value of the reaction process to remain at 11, and react The obtained slurry was aged at 80°C for 20 hours, and then solid-liquid separation was performed, and the obtained solid precipitate was washed with deionized water until the supernatant was neutral, the...
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