A kind of adsorbent for removing cobalt ion in sewage and preparation method thereof
A technology of adsorbent and cobalt ion, which is applied in the field of adsorbent and its preparation, can solve the problems of high cost of adsorbent and unsatisfactory adsorption effect of cobalt ion, and achieve low cost, good particle size consistency, and high-efficiency adsorption effect Effect
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[0037] The present embodiment prepares adsorbent according to the following steps:
[0038] Step 1, prepare MgFe 2 o 4 Nanospheres
[0039] 5mmol Mg(NO 3 ) 2 . 6H 2 O, 2.5mmol FeSO 4 . 7H 2 O, 2.5mmolFe(NO 3 ) 3 . 9H 2 O and 1.0g of polyethylene glycol 6000 were added to a beaker containing 70mL of ethylene glycol. After ultrasonic dispersion was uniform, they were placed on a magnetic stirrer and stirred for 30min. Finally, 3.6g of anhydrous sodium acetate was added and stirred for 10min to obtain Reaction solution: Pour the reaction solution into the polytetrafluoroethylene liner of the reaction kettle, then place it in a blast drying box and heat it at 200°C for 20h. After the reaction kettle is cooled to room temperature, wash the precipitate (in turn with deionized water and anhydrous each washed with water and ethanol 3 times) and dried (60° C. vacuum-dried for 6 hours) to obtain a black powder;
[0040] Pour the black powder into a crucible, put it into a ...
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