Adsorbent for efficiently removing arsenite ions from water, and preparation method thereof

An arsenite and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve the problem of low removal efficiency of arsenite ions, and achieve fast adsorption speed and good adsorption. The effect of performance, excellent adsorption capacity

Active Publication Date: 2019-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is to provide a new adsorbent for adsorbing arsenite ions in water in order to overcome the problem of low removal efficiency of arsenite ions in industrial wastewater solutions in the prior art

Method used

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  • Adsorbent for efficiently removing arsenite ions from water, and preparation method thereof
  • Adsorbent for efficiently removing arsenite ions from water, and preparation method thereof
  • Adsorbent for efficiently removing arsenite ions from water, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Dissolve copper nitrate, manganese nitrate and ferric nitrate in deionized water at a molar ratio of 4.5:1.5:2, stir at room temperature until clear, and record it as solution A; dissolve sodium hydroxide in deionized water, stir at room temperature until clear , recorded as solution B; quickly drop solution B into solution A, stop when the pH value of the solution reaches 8.0, continue to stir for 2 hours, pour the solution into a crystallization kettle and treat it with hydrothermal treatment at 105°C for 5 hours, filter, wash, and dry at 100 ℃ drying for 10h to obtain the adsorbent product A.

[0035] Add 12g of adsorbent A into 1L aqueous solution containing 500mg of arsenite ion at 20°C, stir for 20min and then detect the content of arsenite ion in the water. The results are listed in Table 1.

Embodiment 2

[0037] Dissolve copper nitrate, manganese nitrate and ferric nitrate in deionized water at a molar ratio of 3:3:2, stir at room temperature until clear, and record it as solution A; dissolve sodium hydroxide in deionized water, stir at room temperature until clear , recorded as solution B; quickly drop solution B into solution A, stop when the pH value of the solution reaches 8.0, continue to stir for 2 hours, pour the solution into a crystallization kettle and treat it with hydrothermal treatment at 105°C for 5 hours, filter, wash, and dry at 100 ℃ drying for 10h to obtain the adsorbent product B.

[0038] Add 12g of adsorbent B into 1L of aqueous solution containing 500mg of arsenite ions at 20°C, stir for 20 minutes and then detect the content of arsenite ions in the water. The results are listed in Table 1.

Embodiment 3

[0040] Dissolve copper nitrate, manganese nitrate and lanthanum nitrate in deionized water at a molar ratio of 4.5:1.5:2, stir at room temperature until clear, and record it as solution A; dissolve sodium hydroxide in deionized water, stir at room temperature until clear , recorded as solution B; quickly drop solution B into solution A, stop when the pH value of the solution reaches 8.0, continue to stir for 2 hours, pour the solution into a crystallization kettle and treat it with hydrothermal treatment at 105°C for 5 hours, filter, wash, and dry at 100 C and dried for 10 hours to obtain the adsorbent product C.

[0041] Add 12 g of adsorbent C to 1 L of aqueous solution containing 500 mg of arsenite ions at 20°C, stir for 20 min and then detect the content of arsenite ions in the water. The results are listed in Table 1.

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Abstract

The invention provides an adsorbent for efficiently removing arsenite ions from water, and a preparation method thereof, and relates to an adsorbent for efficiently adsorbing arsenite ions in water, and a preparation method thereof. In the prior art, the removal efficiency of the arsenite ions in the wastewater solution is not high. A purpose of the present invention is mainly to solve the problemin the prior art. According to the technical scheme, a metal complex CuxMn6-xLa2(OH)18.4H2O or CuxMn6-xFe2(OH)18.4H2O as an adsorbent is prepared by combining co-precipitation and hydrothermal treatment, and x is 2-5. With the technical scheme, the problem in the prior art is well solved. According to the present invention, the adsorbent prepared by the method can efficiently remove arsenite ionsfrom water, and can be used in the field of environmental protection.

Description

technical field [0001] The invention relates to an adsorbent for efficiently removing arsenite ions in water and a preparation method thereof. Background technique [0002] The harm of arsenic to the environment has attracted people's attention, and the pollution of arsenic mainly comes from the weathering of arsenic-containing geological bodies. Arsenic pollution is widespread in nature. There are constant reports of poisoning caused by drinking arsenic-contaminated water all over the world, including India, Bangladesh, Vietnam, Thailand, Taiwan, Xinjiang and other places in Asia. The harm of arsenic pollution to the human body is mainly carcinogenic and teratogenic, among which trivalent arsenic is the most toxic. At present, chemical adsorption, neutralization precipitation, flocculation precipitation and reverse osmosis are mainly used to control arsenic pollution at home and abroad. These methods have their own advantages and disadvantages. Generally speaking, the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30C02F1/28C02F101/10
CPCB01J20/0207B01J20/06C02F1/281C02F2101/103
Inventor 李旭光邹薇孔德金侯敏
Owner CHINA PETROLEUM & CHEM CORP
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