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Preparation method of natural hydrotalcite-loaded nano desulfurizer and application of natural hydrotalcite-loaded nano desulfurizer in treatment of sodium sulfide-containing sewage

A natural hydrotalcite and sodium sulfide-containing technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of slow adsorption rate, high cost of use, and low adsorption capacity , to achieve the effect of easy operation, low equipment investment and high adsorption capacity

Active Publication Date: 2021-09-21
安徽理工大学环境友好材料与职业健康研究院(芜湖) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to using adsorption to treat sulfide in water lies in the adsorption efficiency and cost of use of the adsorbent material. However, the existing conventional adsorbent materials have the disadvantages of slow adsorption rate, low adsorption capacity and high cost of use.

Method used

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  • Preparation method of natural hydrotalcite-loaded nano desulfurizer and application of natural hydrotalcite-loaded nano desulfurizer in treatment of sodium sulfide-containing sewage
  • Preparation method of natural hydrotalcite-loaded nano desulfurizer and application of natural hydrotalcite-loaded nano desulfurizer in treatment of sodium sulfide-containing sewage
  • Preparation method of natural hydrotalcite-loaded nano desulfurizer and application of natural hydrotalcite-loaded nano desulfurizer in treatment of sodium sulfide-containing sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method of the natural hydrotalcite loaded nanometer desulfurizer that does not add metal salt:

[0034] S1: 3 grams of natural hydrotalcite (its XRD pattern is shown in figure 1 (shown in the No. 1 curve) add 60 ml of ethanol aqueous solution, the volume ratio of ethanol and distilled water in the ethanol aqueous solution is 1:1, stir vigorously for 4 hours, and stir to make the natural hydrotalcite fully swell to obtain a mixed solution;

[0035] S2: Place the mixed solution on a rotary evaporator for heating and rotary evaporation at 95°C until the solution is evaporated to dryness to obtain a solid product;

[0036] S3: The solid product was dried at 105°C for 3 hours, then sintered at 500°C for 3 hours, and finally cooled naturally to room temperature to obtain the natural hydrotalcite-loaded nano-desulfurizer (the XRD pattern is as follows figure 1 shown in the No. 2 curve).

[0037] Put the prepared natural hydrotalcite-loaded nano-desulfur...

Embodiment 2

[0040] A preparation method of natural hydrotalcite-loaded nano desulfurizer:

[0041] S1: add 3 grams of natural hydrotalcite to 60 ml of ethanol aqueous solution, the volume ratio of ethanol and distilled water in the ethanol aqueous solution is 1:1, stir vigorously for 4 hours, and stir to make the natural hydrotalcite fully swell to obtain a mixed solution;

[0042] S2: Add copper nitrate solution to the mixed solution, the molar ratio of copper nitrate and natural hydrotalcite in the copper nitrate solution is 1:100, stir for 60 minutes, and obtain a reaction solution system after fully reacting;

[0043] S3: The reaction solution system is placed on a rotary evaporator for heating and rotary evaporation at 95°C until the solution is evaporated to dryness to obtain a solid product;

[0044]S4: The solid product was dried at 105°C for 3 hours, then sintered at 500°C for 3 hours, and finally cooled naturally to room temperature to obtain the natural hydrotalcite-loaded nano...

Embodiment 3

[0047] A preparation method of natural hydrotalcite-loaded nano desulfurizer:

[0048] S1: Add 3 grams of natural hydrotalcite to 60 ml of ethanol aqueous solution, the volume ratio of ethanol and distilled water in the ethanol aqueous solution is 1:5, stir vigorously for 4 hours, and stir to make the natural hydrotalcite fully swell to obtain a mixed solution;

[0049] S2: Add copper nitrate solution to the mixed solution, the molar ratio of copper nitrate and natural hydrotalcite in the copper nitrate solution is 1:10, stir for 60 minutes, and obtain a reaction solution system after fully reacting;

[0050] S3: The reaction solution system is placed on a rotary evaporator for heating and rotary evaporation at 95°C until the solution is evaporated to dryness to obtain a solid product;

[0051] S4: The solid product was dried at 105°C for 3 hours, then sintered at 300°C for 3 hours, and finally cooled naturally to room temperature to obtain the natural hydrotalcite-loaded nano...

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Abstract

The invention discloses a preparation method of a natural hydrotalcite-loaded nano desulfurizer and application of the natural hydrotalcite-loaded nano desulfurizer in treatment of sodium sulfide-containing sewage. The desulfurizer is prepared by the following steps of: adding natural hydrotalcite into an ethanol water solution, fully dispersing the hydrotalcite;adding a metal salt solution; stirring the solutions to fully react; heating and carrying out rotary evaporation to remove liquid; and performing drying, sintering and naturally cooling to room temperature. The prepared desulfurizer is simple in preparation process, low in cost and high in operability; and the desulfurizer has a unique nano interlayer space, a structural memory effect and a large specific surface area, can provide more adsorption sites to realize high adsorption capacity of sodium sulfide, is simple to recycle, avoids secondary pollution to water, and can be widely applied to treatment of various sodium sulfide-containing wastewater or other sulfur-containing wastewater.

Description

technical field [0001] The invention relates to the field of desulfurizers, in particular to a preparation method of a natural hydrotalcite-loaded nano desulfurizer and its application in treating sewage containing sodium sulfide. Background technique [0002] containing sulfides (such as Na 2 S, etc.) Wastewater is one of the important pollution sources of water pollution, which can be directly produced by enterprises such as printing and dyeing, petroleum, coking plants, etc., and can also be produced by the reduction of sulfur oxides (such as sulfate, sulfite, thiosulfate, etc.) . Sulfide is easy to produce hydrogen sulfide under acidic conditions, and diffuses from water into the atmosphere, producing the unpleasant smell of rotten eggs, and is very toxic, and can enter the human body through multiple channels such as: respiratory tract inhalation, digestive tract intake, etc. Thereby harming the cells, destroying the activity of various enzymes in the organism, causin...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/10
CPCB01J20/12B01J20/0244B01J20/0237B01J20/0229B01J20/0225B01J20/0203C02F1/281C02F2101/101
Inventor 胡丽芳黄心阳何杰郑贤赟朱继超
Owner 安徽理工大学环境友好材料与职业健康研究院(芜湖)
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