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A method for catalytically removing bisphenol-A by using coke-loaded biocl

A technology for coke removal, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of difficult regeneration and high cost

Active Publication Date: 2021-07-23
TAIYUAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon adsorption is a widely used method, but due to the high cost and difficult regeneration, it is necessary to develop new adsorbents with good effect and low cost and put them into use.

Method used

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  • A method for catalytically removing bisphenol-A by using coke-loaded biocl
  • A method for catalytically removing bisphenol-A by using coke-loaded biocl
  • A method for catalytically removing bisphenol-A by using coke-loaded biocl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Coke pretreatment: Crush large pieces of coke and select coke with a particle size of 5-7 mm; wash with distilled water several times until the upper liquid has no black floating powder; dry in a far-infrared rapid constant temperature drying oven at 403 K for 2 h to constant weight.

[0028] 2) Modification of coke

[0029] Weigh an appropriate amount of pretreated coke into a beaker, soak it in 20% NaOH for 36 h (the liquid level is above the coke, seal it, and store it in the dark at room temperature); after 36 h, wash it with ultrasonic water. Firstly, the alkali-soaked coke was ultrasonically washed twice with a solution of water and ethanol with a volume ratio of 1:1, and then washed with deionized water for 5-6 times (stirring while washing with water during the ultrasonic washing process), and the washing time for each time was 7 min until the upper liquid is not cloudy. After ultrasonic washing, the coke was dried in a far-infrared rapid constant temperatu...

Embodiment 2

[0037] 1) Pretreatment of coke: crush large pieces of coke and select coke with a particle size of 5-7 mm; use distilled water to wash several times until the upper liquid has no black floating powder; Heavy.

[0038] 2) Modification of coke

[0039] Weigh an appropriate amount of pretreated coke into a beaker, soak it in 20% NaOH for 30 h (the liquid level is above the coke, seal it, and store it in the dark at room temperature); after 30 h, wash it with ultrasonic water. First, the alkali-soaked coke was ultrasonically washed 3 times with a solution of water and ethanol with a volume ratio of 1:1, and then washed 5-6 times with deionized water (stirring while washing with water during the ultrasonic washing process), and the cleaning time for each time was 7 min until the upper liquid is not cloudy. After ultrasonic washing, the coke was dried in a far-infrared rapid constant temperature drying oven at 400 K for 2 h to obtain alkali-modified coke.

[0040] 3) Preparation ...

Embodiment 3

[0047] 1) Pretreatment of coke: crush large pieces of coke and select coke with a particle size of 5-7 mm; use distilled water to wash several times until the upper liquid has no black floating powder; Heavy.

[0048] 2) Modification of coke

[0049] Weigh an appropriate amount of pretreated coke into a beaker, soak it in 20% NaOH prepared for 40 h (the liquid level is above the coke, seal it, and store it in the dark at room temperature); after 40 h, wash it with ultrasonic water. First, the alkali-soaked coke was ultrasonically washed 3 times with a solution of water and ethanol with a volume ratio of 1:1, and then washed 5-6 times with deionized water (stirring while washing with water during the ultrasonic washing process), and the cleaning time for each time was 7 min until the upper liquid is not cloudy. After ultrasonic washing, the coke was dried in a far-infrared rapid constant temperature drying oven at 400 K for 2 h to obtain alkali-modified coke.

[0050] 3) Pre...

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Abstract

The invention relates to the technical field of waste water organic matter treatment, specifically a method for catalytically removing bisphenol A by using coke-loaded BiOCl; the catalyst is prepared by coke pretreatment, modification, impregnation, activation and drying in sequence, and then the catalyst is placed Photoremoval in wastewater containing bisphenol A; the concentration of BiOCl in the catalyst is 0.005‑0.015 mol L ‑1 The present invention uses the microstructure of coke to load BiOCl on the coke to accelerate the catalytic efficiency of this catalyst, significantly improves the removal rate of bisphenol A in waste water, and makes the catalytically active components form an effective combination form on the coke structure, Enhanced BiOCl photogenerated electron-hole e‑‑h + Due to the high activity of the catalyst, the removal rate of bisphenol A can reach 100%, and the removal time is greatly shortened.

Description

technical field [0001] The invention belongs to the technical field of waste water organic matter treatment, in particular to a degradation catalyst, in particular to a method for catalytically removing bisphenol A by using coke-loaded BiOCl. Background technique [0002] Bisphenol A, the chemical name is 2,2-bis(4-hydroxyphenyl)propane, referred to as BPA, is an important organic chemical raw material, mainly used to produce a variety of polymer materials and can also be used to produce a variety of fine chemicals The product has a wide range of uses. As one of the organic pollutants, it is an environmental estrogen, which has many hazards to organisms. It has the interference effect of some interfering substances, has a toxic effect on the cells of the nervous system, and has a certain degree of carcinogenicity. And teratogenicity, but also mutagenicity. Up to now, the main methods for removing bisphenol A include physical adsorption, biodegradation, photocatalytic degrad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F1/72C02F1/28B01J27/06B01J35/10C02F101/34
CPCB01J27/06B01J35/004B01J35/10C02F1/283C02F1/30C02F1/725C02F2101/345C02F2305/10
Inventor 田芳张文婧侯安鑫宋珍
Owner TAIYUAN NORMAL UNIV
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