Metal organic skeleton material for removing cobalt ions from wastewater and preparation method of metal organic skeleton material

A metal organic framework, cobalt ion technology, used in the preparation of organic compounds, organic chemistry, cyanide reaction preparation and other directions

Inactive Publication Date: 2017-06-20
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A large number of research results show that the use of MOF materials to recover or process precious metals and radionuclides from wastewater has the advantages of wide range of synthetic materials, large adsorption capacity, good selectivity, fast kinetic equilibr...

Method used

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  • Metal organic skeleton material for removing cobalt ions from wastewater and preparation method of metal organic skeleton material
  • Metal organic skeleton material for removing cobalt ions from wastewater and preparation method of metal organic skeleton material
  • Metal organic skeleton material for removing cobalt ions from wastewater and preparation method of metal organic skeleton material

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Take 1.34g of 2-aminoterephthalic acid and 1.25g of zirconium tetrachloride, dissolve them together in 150ml of N,N-dimethylformamide; add 5.0ml of hydrochloric acid, stir well and then sonicate for 15 minutes , and then the mixed solution was transferred to a hydrothermal reaction kettle, heated to 120°C, and kept at this temperature for 48 hours; naturally cooled to room temperature, filtered, washed with ethanol three times, and dried to obtain a white solid powder UiO-66 -NH 2 ; The resulting white solid powder UiO-66-NH 2 Take 2.0 g and disperse it in 100 ml of ethanol, add 1.0 g of terephthalaldehyde to obtain a mixed solution, reflux the mixed solution for 10 hours, cool to room temperature, filter, wash with ethanol three times, and dry to obtain a yellow solid powder UiO -66-R 1 ; The resulting yellow solid powder UiO-66-R 1 Disperse 1.5 g in 100 ml of ethanol, add 0.75 g of p-aminobenzoic acid to obtain a mixed solution, reflux the mixed solution for 20 hou...

Embodiment 2

[0043] Take 0.5g of 2-aminoterephthalic acid and 0.5g of zirconium tetrachloride, dissolve them together in 150ml of N,N-dimethylformamide; then add 2.0ml of hydrochloric acid, stir well and then sonicate for 15 minutes , and then the mixed solution was transferred to a hydrothermal reaction kettle, heated to 120°C, and maintained at this temperature for 48 hours; naturally cooled to room temperature, filtered, washed with ethanol three times, and dried to obtain a white solid powder UiO-66- NH 2 ; The resulting white solid powder UiO-66-NH 2 Take 3.0 g and disperse it in 100 ml of ethanol, add 1.0 g of terephthalaldehyde to obtain a mixed solution, reflux the mixed solution for 10 hours, cool to room temperature, filter, wash with ethanol three times, and dry to obtain a yellow solid powder UiO -66-R 1 ; The resulting yellow solid powder UiO-66-R 1 Disperse 1.0 g in 100 ml of ethanol, add 0.3 g of p-aminobenzoic acid to obtain a mixed solution, reflux the mixed solution fo...

Embodiment 3

[0045] Take 2.0g of 2-aminoterephthalic acid and 2.0g of zirconium tetrachloride, dissolve them together in 150ml of N,N-dimethylformamide; then add 10.0ml of hydrochloric acid, stir well and then sonicate for 15 minutes , then transfer the mixed solution into a hydrothermal reaction kettle, heat to 120°C, and keep this temperature for 48 hours; after cooling to room temperature, filter, wash with ethanol three times and dry to obtain white solid powder UiO-66- NH 2 ; The resulting white solid powder UiO-66-NH 2 Take 1.0 g and disperse it in 100 ml of ethanol solution; add 0.3 g of terephthalaldehyde to obtain a mixed solution, and reflux the mixed solution for 10 hours; filter after cooling to room temperature, wash with ethanol three times and then dry to obtain a yellow solid powder UiO -66-R 1 ; The resulting yellow solid powder UiO-66-R 1 Disperse 3.0 g in 100 ml of ethanol, add 1.5 g of p-aminobenzoic acid to obtain a mixed solution, reflux the mixed solution for 20 h...

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Abstract

The invention discloses a metal organic skeleton material for removing cobalt ions from wastewater and a preparation method of the metal organic skeleton material. The method comprises the following steps: preparing UiO-66-NH2 firstly, then preparing UiO-66-R1, and finally, preparing a bis-Schiff base functional group-containing metal organic skeleton material; and then using the bis-Schiff base functional group-containing metal organic skeleton material for adsorption treatment on the cobalt ions in the wastewater, namely, carrying out adsorption treatment on the cobalt-containing wastewater, and inspecting influences of factors, including cobalt-containing solutions with different pH values, different adsorption temperatures, different adsorption time and different original cobalt ion concentrations on cobalt ion adsorption with UiO-66-Schiff base as an adsorbent, wherein the adsorbing capability of the adsorbent to the cobalt ions under a preferred condition can reach 256mg/g. The preparation method of the invention has the characteristics of simpleness in technology, no secondary pollution and high adsorbing capability; the metal organic skeleton material has the characteristics of capability of cyclic utilization, resource conservation, cost reduction and the like; and a new method for removing the cobalt ions from the cobalt-containing wastewater is found.

Description

technical field [0001] The invention relates to a preparation technology of a metal organic framework material, in particular to a metal organic framework material for removing cobalt ions in waste water and a preparation method thereof. Background technique [0002] 60 As one of the main radionuclides, Co is widely used in the fields of industrial and agricultural production, medicine and scientific research because it can emit two high-energy γ-rays of 1.17 MeV and 1.33 MeV. However, while radionuclides serve human production and life, they also generate a large amount of radioactive waste, which has caused direct or indirect impacts and damages on human health and safety and environmental protection. Therefore, it is necessary to seek a method that can effectively remove radioactive waste water 60 Co's approach appears to be necessary. [0003] At present, the removal methods of cobalt ions in wastewater include solvent extraction, ion exchange resin, precipitation, me...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30C02F1/28G21F9/12C07C249/02C07C251/24
CPCB01J20/226B01J2220/4806B01J2220/4812C02F1/285C02F2101/006C02F2101/20C07C227/18C07C249/02G21F9/12C07C229/76C07C251/24
Inventor 廖家莉袁果园刘宁杨吉军杨远友涂洪刘军王静
Owner SICHUAN UNIV
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