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Method for removing dye from wastewater by means of edible fungus waste

A technology for waste and edible fungi, applied in the direction of adsorbed water/sewage treatment, etc., can solve the problem of resource utilization value not being developed, and achieve the effect of remarkable treatment effect, low price of raw materials, and easy promotion.

Inactive Publication Date: 2015-12-23
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these edible fungus wastes are used as fuel or fertilizer, so its resource utilization value is far from being developed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 105 grams of shiitake mushroom waste, wash it with water, and immerse it in 0.5 L In an aqueous sodium hydroxide solution with a concentration of 2mol / L, stir mechanically for 12 hours, filter, wash with water until neutral; then soak in 1L isopropanol solution, stir mechanically for 12 hours, filter, wash with water, and put in an oven , at a temperature of 80 o C drying; collection can be used as adsorbent. Prepare a methylene blue solution with a concentration of 4mg / L 1L As a simulated dye wastewater, 50 grams of adsorbent was added to adjust the pH to 4.0, and after shaking at room temperature (25°C) for 6 hours, the adsorbent particles were removed by filtration.

[0039] The concentration of methylene blue in the filtrate and the solution before adsorption was detected by a UV-visible spectrophotometer. The adsorption rate was equal to the mass of the adsorbed dye divided by the mass of the dye before adsorption, and the adsorption rate reached 87.2%.

Embodiment 2

[0041] Take 104 grams of mushroom waste, wash with water, immerse in 0.5L of 1mol / L sodium hydroxide aqueous solution, stir mechanically for 16 hours, filter, wash with water until neutral; then soak in 2.08L of isopropanol solution, mechanically Stir for 14 hours, filter, wash with water, put in an oven, at a temperature of 95 o C drying; collection can be used as adsorbent. Prepare 0.5 L of methylene blue solution with a concentration of 4 mg / L as simulated dye wastewater, add 50 grams of adsorbent, adjust the pH to 6.0, and shake at room temperature (25°C) for 8 hours, then filter and remove the adsorbent particles.

[0042] The concentration of methylene blue in the filtrate and the solution before adsorption was detected by a UV-visible spectrophotometer. The adsorption rate was equal to the mass of the adsorbed dye divided by the mass of the dye before adsorption, and the adsorption rate reached 78.8%.

Embodiment 3

[0044] Get 108 grams of Flammulina velutipes waste, wash with water, immerse in 0. 54L In an aqueous potassium hydroxide solution with a concentration of 4mol / L, stir mechanically for 24 hours, filter, wash with water until neutral; then soak in 1.08L 2-butanol solution, stir mechanically for 20 hours, filter, wash with water, and put in an oven , at a temperature of 105 o C drying; collection can be used as adsorbent. Prepare 4L of methylene blue solution with a concentration of 2mg / L as simulated dye wastewater, add 80g of adsorbent, adjust the pH to 8.0, shake at room temperature (25°C) for 12 hours, and filter out the adsorbent particles.

[0045] The concentration of methylene blue in the filtrate and the solution before adsorption was detected by a UV-visible spectrophotometer. The adsorption rate was equal to the mass of the adsorbed dye divided by the mass of the dye before adsorption, and the adsorption rate reached 83.9%.

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PUM

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Abstract

The invention provides a method for removing dye from wastewater by means of edible fungus waste and belongs to the technical field of dye wastewater disposal. The method comprises the steps of cleaning the edible fungus waste, then soaking the cleaned edible fungus waste into an alkaline solution the concentration of which is 0.1-5 mol / L, stirring the mixture for 4-48 h, conducting filtration, and conducting washing till the mixture becomes neutral; soaking the mixture in an alcoholic solution, conducting stirring for 1-48 h, and taking the new mixture out to be placed in an oven to be dried under 40-150 DEG C, so that an adsorbent is obtained; adding the adsorbent to the dye wastewater, adjusting the pH value, conducting stirring or oscillation under 20-50 DEG C for 2-24 h, and then conducting filtering separation, so that adsorption removal of the dye in the wastewater is achieved. According to the method, the adsorbent is obtained simply through two treatment steps conducted on the edible fungus waste so as to be used for treatment of the dye in the dye wastewater, the preparation method is simple and feasible, environment benefits are high, and treatment effect is remarkable.

Description

Technical field [0001] The present invention is the field of dye wastewater treatment technology, which involves a method that uses edible fungus waste to remove dyes in wastewater. Background technique [0002] In recent years, the problem of environmental pollution caused by dye wastewater has increasingly threatened people's life and health.Traditional purification methods such as flocculation, precipitation, adsorption, and other disadvantages of high costs, complex operations, and large investment.The use of biomass waste as adsorption materials for the purification of dyes molecules in wastewater is a new technology. It has the advantages of environmentally friendly, low price, renewable, easy to obtain, and extensive sources of raw materials.The purpose of abandonment.my country is a large country of edible fungi. It will produce a large amount of edible fungus waste during the harvest or consumption process every year. If it is not dealt with in time, these wastes will no...

Claims

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Application Information

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IPC IPC(8): C02F1/28
Inventor 郭永明胡凤萍马勤阁
Owner NANYANG NORMAL UNIV