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Method for removing organic pollutants in water

A technology for organic pollutants and water bodies, applied in the direction of water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of high cost, many synthesis steps, etc., and achieve convenient operation, simple process, and easy industrial utilization Effect

Active Publication Date: 2021-07-09
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of using transition metal-based catalysts to activate PMS still has the disadvantages of high cost and many synthesis steps, so it is necessary to synthesize a high-efficiency PMS catalyst using low-cost raw materials and simple synthesis methods

Method used

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  • Method for removing organic pollutants in water
  • Method for removing organic pollutants in water
  • Method for removing organic pollutants in water

Examples

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Embodiment 1

[0043] A method for removing organic pollutants in a water body, specifically utilizing a catalyst activated permonosulfate prepared by calcining waste lithium battery anode materials to degrade rhodamine B wastewater, comprising the following steps:

[0044] Take by weighing the catalyst (AM-450, AM-650, AM-850) that makes under the different calcining temperature conditions of 30mg, join respectively in the rhodamine B waste water (the pH value of this waste water is 3.48) of 100mL, 20mg / L, Stir for 5 minutes, mix well, add permonosulfate, wherein the concentration of permonosulfate (potassium hydrogen persulfate) in the system is 0.5mM, carry out degradation reaction for 13min, and complete the removal of rhodamine B in wastewater.

[0045] PMS group: without adding any catalyst, other conditions are the same.

[0046] AM-650 group: without adding permonosulfate, other conditions are the same.

[0047] In the present embodiment, the catalyst (AM-650) that adopts is prepare...

Embodiment 2

[0059] A method for removing organic pollutants in a water body, specifically utilizing a catalyst activated permonosulfate prepared by calcining waste lithium battery anode materials to degrade rhodamine B wastewater, comprising the following steps:

[0060] Take by weighing 6 parts of the catalyst (AM-650) that makes in the embodiment 1, each 30mg, join respectively the rhodamine B waste water that pH value is 3,3.48,5,7,9,11 (the volume of these waste waters is 100mL, the initial concentration is 20mg / L), stir 5min, mix evenly, add permonosulfate (potassium hydrogen persulfate), wherein the concentration of permonosulfate in the system is 0.5mM, carry out the degradation reaction for 13min, complete the Rhodamine B removal from wastewater.

[0061] During the degradation reaction, take 4mL samples with a syringe every 2 minutes in a 5mL centrifuge tube (adding 1mL of methanol quencher in advance to terminate the reaction), and measure the concentration of all samples with u...

Embodiment 3

[0066] A method for removing organic pollutants in a water body, specifically utilizing a catalyst activated permonosulfate prepared by calcining waste lithium battery anode materials to degrade rhodamine B wastewater, comprising the following steps:

[0067] Take by weighing 4 parts of the catalyst (AM-650) that makes in the embodiment 1, each 30mg, add respectively to the deionized water that contains Rhodamine B, tap water, river water (Xiangjiang, Changsha City) and lake water (Taozi Lake, Changsha City) ( The volume of these wastewaters is 100mL, the initial concentration is 20mg / L, and the pH value is 3.48, 6.62, 7.31, 7.85) in turn, stir for 5min, mix well, add permonosulfate (potassium hydrogen persulfate), and the system The concentration of the peroxomonosulfate is 0.5mM, and the degradation reaction is carried out for 13 minutes to complete the removal of rhodamine B in the wastewater.

[0068] During the degradation reaction, take 4mL samples with a syringe every 2...

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Abstract

The invention discloses a method for removing organic pollutants in water. The method is characterized in that a catalyst is used for activating peroxymonosulfate to degrade organic pollutant wastewater, and the catalyst is prepared by calcining a waste lithium battery negative electrode material at 600-700 DEG C. According to the invention, the adopted catalyst has the advantages of high electron transfer rate, high catalytic activity and the like, when the catalyst is used as an activator of peroxymonosulfate for removing organic pollutants in a water body, reaction can be carried out at normal temperature and normal pressure, various organic pollutants (such as dyes and antibiotics) can be mineralized into water and carbon dioxide, and efficient solid-liquid separation can be carried out. The method has the advantages that the operation is simple, large equipment is not needed, the cost is low, the application range is wide, the treatment efficiency is high, the treatment effect is good, the reusability is high, the method is environment-friendly, organic pollutants in water can be efficiently and thoroughly removed, and the method has good application value and application prospect.

Description

technical field [0001] The invention belongs to the field of lithium battery recovery and recycling and advanced oxidation treatment of environmental pollutants, relates to a method for removing organic pollutants in water bodies, in particular to a method for removing organic pollutants in water bodies by using waste lithium battery negative electrode materials. Background technique [0002] Waste lithium batteries have dual attributes of resources and environmental hazards, and their recycling and harmless treatment has significant economic and environmental benefits, so it has received more and more attention. At present, the recycling of waste lithium batteries mainly focuses on the recovery of valuable metals (such as cobalt, nickel, manganese, lithium, aluminum) in positive electrode materials. However, due to the low added value of anode materials and strict separation steps, research on their recycling is limited. The negative electrode of the waste lithium battery ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72B01J23/72C02F101/30
CPCC02F1/725B01J23/72C02F2101/308
Inventor 李晓东赵燕兰袁兴中管弦王侯蒋龙波李英邵亚男陈绪武季靖钦
Owner HUNAN UNIV
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