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

Active Publication Date: 2020-06-05
HEFEI UNIV OF TECH
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Problems solved by technology

[0005] Aiming at the problems of high cost and unsatisfactory adsorption effect of the existing adsorbents for removing cobalt ions in sewage, the present invention provides an adsorbent for removing cobalt ions in sewage and a preparation method thereof, aiming at obtaining high-efficiency adsorption effects A new type of magnetic adsorbent MgFe with low cost 2 o 4 -HNT@Starch

Method used

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  • A kind of adsorbent for removing cobalt ion in sewage and preparation method thereof
  • A kind of adsorbent for removing cobalt ion in sewage and preparation method thereof
  • A kind of adsorbent for removing cobalt ion in sewage and preparation method thereof

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Embodiment 1

[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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Abstract

The invention discloses an adsorbent used for efficiently removing cobalt ions in sewage and a preparation method thereof. The method comprises the following steps: preparing MgFe2O4 nanospheres, preparing a starch-grafted endellite nanotube composite material, and finally compositing the MgFe2O4 nanospheres and the starch-grafted endellite nanotube composite material to obtain the MgFe2O4-HNT-coated Starch composite material as the adsorbent. The preparation technology has the advantages of simple process, low cost, and strong operationality, the adsorbent can rapidly absorb and remove the cobalt ions in the sewage, separation is easy, the adsorbent can remove the cobalt ions in the sewage, and can degrade an organic matter in the sewage as a photocatalyst and removes SO2 in atmosphere.

Description

technical field [0001] The invention relates to an adsorbent for removing cobalt ions in sewage and a preparation method thereof, belonging to the technical field of metal materials and the technical field of nano magnetic material preparation technology. Background technique [0002] The rapid development of my country's nuclear power industry has produced a large amount of radioactive wastewater, which has brought great pressure to environmental protection, and most of them are low- and medium-level radioactive wastewater. The treatment of nuclear waste is based on the principles of high efficiency and energy saving, and generally adopts the method of temporary storage and discharge. For low-to-medium level radioactive waste, after adopting appropriate treatment methods, most of the radioactive substances are transferred to small-volume concentrates Store them, and when the remaining radioactive substances in the bulk waste are below the allowable discharge concentration, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
CPCB01J20/0229B01J20/04B01J20/12B01J20/24C02F1/28C02F2101/20
Inventor 郭志强凌强陈锐周雨胜王勇李媛徐进章
Owner HEFEI UNIV OF TECH
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