Method for resource utilization of waste copper adsorbent

An adsorbent and recycling technology, applied in the field of hazardous waste recycling, achieves the effect of easy operation, large industrial applicability and simple method

Active Publication Date: 2021-02-05
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the catalytic degradation of rhodamine B by using waste copper-containing adsorbents at home and abroad.

Method used

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  • Method for resource utilization of waste copper adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: The method for resource utilization of the waste copper adsorbent is as follows:

[0025] 1. Synthesis of ZSM-5

[0026] (1) Mix 0.33g silica fume, 1.31g sodium silicate nonahydrate, 0.43g ammonium chloride, 0.24g tetrapropylammonium bromide and grind for 15min until the solid mixture becomes a paste;

[0027] (2) Transfer the paste to the reactor, and place the reactor at 160°C for 48 hours;

[0028] (3) After the reaction is completed, take out the reaction kettle to cool down, wash the reaction product with deionized water 5 times, and then dry it at 60°C overnight to obtain a solid white powder ZSM-5; the results are shown in figure 1 , the zeolite synthesized by tetrapropylammonium bromide has the crystal phase of ZSM-5; the main peak (2 = 7.9 o , 8.9 o , 23.1 o , 23.9 o ), which is consistent with the orthorhombic structure of ZSM-5; the synthesis of high-silicon ZSM-5 requires a higher templating agent, and TPA in tetrapropylammonium bromide ...

Embodiment 2

[0034] Embodiment 2: the method for resource utilization of this waste copper adsorbent is as follows:

[0035] 1. Synthesis of ZSM-5

[0036] (1) Mix 0.32g silica fume, 1.35g sodium silicate nonahydrate, 0.45g ammonium chloride, 0.25g tetrapropylammonium bromide and grind for 15min until the solid mixture becomes a paste;

[0037] (2) Transfer the paste to the reactor, and place the reactor at 170°C for 45 hours;

[0038] (3) After the reaction is completed, take out the reaction kettle to cool down, wash the reaction product with deionized water 5 times, and then dry it at 60°C overnight to obtain solid white powder ZSM-5;

[0039] 2. Preparation of nZVI / ZSM-5

[0040] (1) Add 0.5g ZSM-5 and 0.45g ferrous sulfate heptahydrate into a three-necked flask, add 100mL ethanol solution with a mass concentration of 30%, and stir for 25min to obtain a mixed solution; while stirring, add 0.5mol of sodium borohydride / L ratio, drop the sodium borohydride solution into the three-necked...

Embodiment 3

[0044] Embodiment 3: The method for resource utilization of the waste copper adsorbent is as follows:

[0045] 1. Synthesis of ZSM-5

[0046] (1) Mix 0.35g silica fume, 1.34g sodium silicate nonahydrate, 0.5g ammonium chloride, 0.3g tetrapropylammonium bromide and grind for 15min until the solid mixture becomes a paste;

[0047] (2) Transfer the paste to the reactor, and place the reactor at 150°C for 50 hours;

[0048] (3) After the reaction is completed, take out the reaction kettle to cool down, wash the reaction product with deionized water 5 times, and then dry it at 60°C overnight to obtain solid white powder ZSM-5;

[0049] 2. Preparation of nZVI / ZSM-5

[0050] (1) Add 0.5g ZSM-5 and 0.225g ferrous sulfate heptahydrate into a three-necked flask, add 100mL ethanol solution with a mass concentration of 30%, and stir for 25min to obtain a mixed solution; while stirring, add 0.5mol of sodium borohydride / L ratio, drop the sodium borohydride solution into the three-necked...

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PUM

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Abstract

The invention discloses a method for resource utilization of a waste copper adsorbent. The method is characterized in that the waste copper adsorbent obtained after copper adsorption is subjected to vacuum drying and roasting and is then used for catalytic degradation of rhodamine B. According to the method disclosed by the invention, the degradation time of rhodamine B can be greatly reduced, andthe removal rate of rhodamine B can be up to 99% or above, so the purpose of treating the waste with the waste is achieved, and good application prospects are obtained.

Description

technical field [0001] The invention relates to a method for resource utilization of waste copper adsorbent, which belongs to the technical field of hazardous waste resource recovery. Background technique [0002] heavy metal Cu 2+ It is widely used as a feed additive because it can promote the growth of animals, and it can also improve the feeding efficiency of feed, prevent and reduce the risk of animal infection. Copper plays a vital role in animal metabolism, facilitating the synthesis of enzymes. However, excessive intake of Cu 2+ It can lead to deposition in the liver, followed by vomiting, headache, nausea, breathing problems, abdominal pain, liver and kidney failure, and gastrointestinal bleeding. Copper is non-biodegradable, and it accumulates in organisms, causing damage to the liver, kidneys, and central nervous system. Excessive Cu in freshwater resources and aquatic ecosystems 2+ Will disrupt the osmoregulatory mechanism of freshwater animals, eventually le...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/30C02F9/04C02F101/20C02F101/34C02F101/36C02F101/38
CPCB01J20/18C02F1/281C02F1/725C02F1/722C02F2101/36C02F2101/38C02F2101/34C02F2101/20
Inventor 韩彩芸周春地阳婷
Owner KUNMING UNIV OF SCI & TECH
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