Ferric alginate-sodium citrate gel material as well as preparation method and application thereof

A technology of sodium citrate and gel materials, applied in chemical instruments and methods, water/sludge/sewage treatment, organic compounds/hydrides/coordination complex catalysts, etc. The speed current utilization rate and the treatment effect are not ideal, and the preparation method is simple, the reaction activity is enhanced, and the catalytic effect is high.

Pending Publication Date: 2021-11-30
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For organic wastewater that is difficult to degrade like phenol wastewater, electrochemical methods can usually be used for treatment. Although the electrochemical method is simple to treat wastewat

Method used

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  • Ferric alginate-sodium citrate gel material as well as preparation method and application thereof
  • Ferric alginate-sodium citrate gel material as well as preparation method and application thereof
  • Ferric alginate-sodium citrate gel material as well as preparation method and application thereof

Examples

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Example Embodiment

[0028] The present invention provides an iron salt of alginic acid - sodium citrate prepared gel material, the method comprising the steps of:

[0029] 1) preparing an aqueous solution of sodium alginate, FeSO 4 · 7h 2 O mixed with an aqueous solution of sodium citrate;

[0030] 2) an aqueous solution of sodium alginate was added dropwise to FeSO 4 · 7h 2 O mixed with an aqueous solution of sodium citrate, after which the reaction was allowed to stand;

[0031] After 3) The reaction, post-treatment, i.e. to obtain iron salt of alginic acid - sodium citrate gel material.

[0032] Step 1), the sodium alginate aqueous solution, the concentration of sodium alginate is 1-1.3g / 100ml. FeSO 4 · 7h 2 O mixed with an aqueous solution of sodium citrate, the molar concentration of sodium citrate is 0.1-0.2mmol / L, FeSO 4 · 7h 2 O molar concentration 0.1-0.15mol / L.

[0033] 2) In the step, FeSO 4 · 7h 2 O and sodium alginate mass ratio (2.7-3.5): 1. Dropwise with a needle tube, a dropping...

Example Embodiment

[0037] Example 1:

[0038] Preparation of the gel material a)

[0039] Weigh 1g sodium alginate was dissolved in 100ml of deionized water to obtain an aqueous solution of sodium alginate; the 0.013molFeSO 4 · 7h 2 O was added to 100ml of water and sodium citrate was added 0.01mmol, a mixed aqueous solution; the two solutions were mixed by a needle in a dropwise fashion, followed by standing treatment, the temperature was allowed to stand for 32 ℃, standing time 24h the resulting product was washed with water, washed with ethanol, and dried 4h 40 ℃ vacuo to obtain a gel material. Depend on figure 1 As can be seen, the gel material prepared spherical.

[0040] 2) application of the gel material

[0041] The gel material after step 1) obtained by the addition of 12g / l of phenol in water in an amount to 5mL, wherein phenol concentration was 20mg / L, hydrogen peroxide concentration of 2mM, 30min take a sample, the sample again after 60min, quenched HPLC analysis sent.

[0042] Depen...

Example Embodiment

[0043] Example 2:

[0044] Preparation of the gel material a)

[0045] Weigh 1.2g of sodium alginate were dissolved in 100ml of deionized water to obtain an aqueous solution of sodium alginate; the 0.013molFeSO 4 · 7h 2 O was added to 100ml of water and sodium citrate was added 0.01mmol, a mixed aqueous solution; the two solutions were mixed by a needle in a dropwise fashion, followed by standing treatment, the temperature was allowed to stand for 32 ℃, standing time 24h the resulting product was washed with water, washed with ethanol, dried 6h 40 ℃ vacuo to obtain a gel material.

[0046] 2) application of the gel material

[0047] The gel material after step 1) obtained by the addition of 12g / l of phenol in water in an amount to 5mL, wherein phenol concentration was 20mg / L, hydrogen peroxide concentration of 3mM, 30min take a sample, the sample again after 60min, quenched HPLC analysis sent.

[0048] Depend on figure 2 As can be seen, in this embodiment the gel material unde...

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Abstract

The invention relates to a ferric alginate-sodium citrate gel material as well as a preparation method and application thereof. The preparation method comprises the following steps: 1) preparing a sodium alginate aqueous solution and a mixed aqueous solution of FeSO4.7H2O and sodium citrate; 2) dropwise adding a sodium alginate aqueous solution into a mixed aqueous solution of FeSO4.7H2O and sodium citrate, and then conducting standing for reaction; and 3) after the reaction is finished, carrying out post-treatment to obtain the ferric alginate-sodium citrate gel material. During application, the gel material and hydrogen peroxide are added into phenol wastewater to degrade phenol. Compared with the prior art, the ferric alginate-sodium citrate gel material prepared by the invention has an efficient catalytic effect in phenol wastewater treatment, and the gel material is spherical, is easy to separate from pollutants, and can be recycled; and compared with a noble metal catalyst, raw materials such as sodium citrate are cheap and easy to obtain, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the technical field of phenol wastewater treatment, and relates to an iron alginate-sodium citrate gel material and a preparation method and application thereof. Background technique [0002] With the development of the petrochemical industry, the problem of phenol wastewater pollution has become increasingly prominent. Phenol is widely used in industrial production, but it is also a common organic pollutant emitted in human daily production activities. It has a strong aromatic smell, is flammable and toxic, and has been identified as a strong carcinogen. It is inhaled through the contact of the skin and mucous membranes or immersed in the organism through the oral cavity. After contacting with the protein in the intracellular plasma, it forms insoluble protein and deactivates the cells. It has a greater affinity for the nervous system, causing neurological lesions. . Phenol-containing wastewater is very harmful to humans. Th...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/08C02F1/72C02F101/34
CPCB01J35/08B01J35/0013B01J31/2239C02F1/722C02F1/725C02F2101/345B01J2531/842
Inventor 卢德力杨琦东韩生陈哲赵玉壮王玉蒙陈亚莉穆晓银孙彬任飞鹤卢义麟李腾飞田盼盼
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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