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A method for efficiently removing methylene blue from waste gas produced by pretreatment of Jerusalem artichoke core

A methylene blue and pretreatment technology, applied in water/sewage treatment, chemical instruments and methods, textile industry wastewater treatment, etc., can solve the problems of high cost and low value, and achieve excellent removal effect

Active Publication Date: 2020-05-26
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing technology has achieved a certain degree of "treating waste with waste", by modifying some industrial and agricultural production wastes, it is possible to obtain products that remove dyes, but the cost of these modification treatments is usually high, and promotion low value applied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The Jerusalem artichoke core is pulverized through a 40-mesh sieve to obtain the Jerusalem artichoke core powder; 8g of the Jerusalem artichoke core powder is put into the reactor, and the solid-to-liquid ratio is 1:10, and 80g of phosphoric acid and hydrogen peroxide mixed solution are added to the reactor, wherein The mass fraction of concentrated phosphoric acid is 65.0%, the mass fraction of hydrogen peroxide is 7.0%, the temperature of pretreatment is 50 ℃, and the pretreatment time is 4h; Collect the gas produced during pretreatment; The degradation reaction was carried out at 50° C. in an airtight container (50 ml specification) in 7.5 ml of methylene blue waste liquid (100 ppm).

[0031] Based on the change of the reaction concentration before and after, the removal rate of methylene blue was measured, and the obtained removal rate was 100%.

Embodiment 2

[0033] Adjust the mass fraction of concentrated phosphoric acid to be 70.0%, the mass fraction of hydrogen peroxide to be 5.0%, and the rest remain consistent with Example 1. The removal rate of methylene blue still all reaches more than 99%.

Embodiment 3

[0035] Adjust the weight of Jerusalem artichoke core powder to be 10g, and the volume of methylene blue waste liquid is 5ml, and all the other remain consistent with embodiment 1. The removal rate of methylene blue still all reaches more than 99%.

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PUM

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Abstract

The invention provides a method for efficiently removing methylene blue from waste gases pretreated by utilizing jerusalem artichoke cores. The method comprises the following steps: collecting jerusalem artichoke cores to pretreat produced waste gases, introducing the waste gases into a closed container filled with methylene blue liquid waste, and carrying out a degradation reaction at a temperature of 30-80 DEG C. The pretreatment method with the jerusalem artichoke cores comprises the following steps: adding the jerusalem artichoke cores into a reactor, and adding a strong phosphoric acid-hydrogen peroxide mixed reagent to carry out a pretreatment reaction, wherein the strong phosphoric acid has a mass fraction of 60.0-70.0%, and the hydrogen peroxide has a mass fraction of 5.0-8.0%. Themethod disclosed by the invention has an excellent effect of removing common methylene blue, the defect that raw materials need to be subjected to special modification treatment in the conventional solid-based and liquid-based treatment technology is overcome, the technical aim of 'directly treating wastes with wastes' is really achieved, and organic combination of two industries such as bioethanol preparation and wastewater treatment is realized.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for efficiently removing methylene blue from waste gas produced by pretreatment of Jerusalem artichoke cores. Background technique [0002] my country is a traditional textile country. In recent years, with the request for economic structural transformation, the improvement of textile production waste treatment technology will receive more and more attention. Dyestuff is one of the main pollutants in the textile production process. Its composition is complex, and most of them are biologically toxic and refractory. It is a kind of wastewater that is difficult to treat. [0003] At present, the traditional methods of pollution treatment are adsorption, membrane separation, ozone oxidation and photocatalysis. [0004] The Chinese patent with the authorized notification number CN 102659235 B provides a treatment method for dye wastewater. Through th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/58C02F103/30
CPCC02F1/58C02F2101/308C02F2103/30
Inventor 沈飞田东吴孟珂刘章林王卿向春晓刘太聪曾咏梅邓仕槐张延宗杨刚
Owner SICHUAN AGRI UNIV