Amphoteric adsorbent prepared from grain stillage, preparation method for amphoteric adsorbent and application of amphoteric adsorbent

A technology of adsorbent and distiller's grains, which is applied in the field of brewing waste resource utilization and environmental protection, can solve the problems of polluting the environment and wasting resources, and achieves the effects of low reaction energy consumption, increased adsorption capacity and adsorption rate, and wide source of raw materials

Active Publication Date: 2017-10-13
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of distiller's grains, such as distiller's grains, beer's grains, yellow distiller's grains, etc. Among them, distiller's grains are rich in cellulose, crude fiber and amino acids, and contain functional groups such as hydroxy

Method used

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  • Amphoteric adsorbent prepared from grain stillage, preparation method for amphoteric adsorbent and application of amphoteric adsorbent
  • Amphoteric adsorbent prepared from grain stillage, preparation method for amphoteric adsorbent and application of amphoteric adsorbent
  • Amphoteric adsorbent prepared from grain stillage, preparation method for amphoteric adsorbent and application of amphoteric adsorbent

Examples

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Embodiment 1

[0032] A method for an amphoteric adsorbent prepared from distiller's grains, comprising the following steps:

[0033] 1) In terms of parts by mass, add 5 parts of potassium hydroxide to 50 parts of deionized water to obtain the first lye, cool to room temperature for subsequent use; add 1 part of sodium hydroxide to 50 parts of In deionized water, the second lye was obtained, cooled to room temperature for later use; adding 1 part of magnesium nitrate to 1 part of deionized water according to the mass ratio to obtain a magnesium nitrate solution, cooled to room temperature for later use.

[0034] 2) In terms of parts by mass, add 1 part of 20-mesh distiller's grains to 1 part of the first lye, stir at 20°C and 60r / min for 0.5h, wash with deionized water twice until neutral, Dry at 30°C to obtain pretreated distiller's grains.

[0035] 3) In terms of parts by mass, add 1 part of pretreated distiller's grains to 1 part of the second lye, stir at 20°C and 60r / min for 0.1h, add ...

Embodiment 2

[0038] A method for an amphoteric adsorbent prepared from distiller's grains, comprising the following steps:

[0039] 1) In terms of parts by mass, add 10 parts of sodium carbonate to 100 parts of deionized water to obtain the first lye, cool to room temperature for subsequent use; add 5 parts of potassium hydroxide to 250 parts of deionized water by mass ratio In deionized water, the second lye was obtained, cooled to room temperature for later use; 5 parts of magnesium chloride were added to 5 parts of deionized water according to the mass ratio to obtain a magnesium chloride solution, cooled to room temperature for later use.

[0040] 2) In terms of parts by mass, add 6 parts of 80-mesh yellow rice distiller's grains to 7 parts of the first lye, stir at 30°C and 80r / min for 1.5h, wash with deionized water 3 times until neutral, and Dry at 45°C to obtain pretreated distiller's grains.

[0041] 3) In parts by mass, add 3 parts of pretreated distiller's grains to 4 parts of ...

Embodiment 3

[0044] A method for an amphoteric adsorbent prepared from distiller's grains, comprising the following steps:

[0045] 1) In terms of parts by mass, add 20 parts of sodium hydroxide to 200 parts of deionized water to obtain the first lye, cool to room temperature for subsequent use; add 15 parts of sodium bicarbonate to 300 parts of In deionized water, the second lye was obtained, cooled to room temperature for later use; adding 10 parts of zinc chloride to 100 parts of deionized water according to the mass ratio to obtain a zinc chloride solution, cooled to room temperature for later use.

[0046] 2) In terms of parts by mass, add 12 parts of 150-mesh distiller's grains to 14 parts of the first lye, stir at 40°C and 140r / min for 3 hours, wash with deionized water 5 times until neutral, and and then dried to obtain pretreated distiller's grains.

[0047] 3) In terms of parts by mass, add 12 parts of pretreated distiller's grains to 14 parts of the second lye, stir at 40°C and...

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Abstract

The invention discloses an amphoteric adsorbent prepared from grain stillage, a preparation method for the amphoteric adsorbent and an application of the amphoteric adsorbent and belongs to the fields of brewage waste resource utilization and environmental protection. The amphoteric adsorbent is prepared through taking the grain stillage as a base material, firstly, carrying out pretreatment by using alkali, carrying out a reaction by using an anion modifier, taking an inorganic salt as a converter, and carrying out a reaction by using a cation modifier. The entire process is simple in operation and low in reaction energy consumption, and the raw materials are wide in source and are economical and readily available. The amphoteric adsorbent prepared by the preparation method has good adsorption performance and has the characteristics of low cost, cyclic utilization and no environmental pollution. The amphoteric adsorbent has the adsorption removal rate of 88% to 99.99% to one of cationic dyes such as methylene blue, basic fuchsin, crystal violet, cationic red, malachite green and neutral red and any of anionic dyes such as acid black 1, acid fuchsin, methyl orange, congo red, acid red 18 and acid orange 7 in wastewater, and the adsorption capacity to each of the cationic and anionic dyes is 1mg/g to 500mg/g.

Description

technical field [0001] The invention belongs to the fields of utilization of winemaking waste resources and environmental protection, and in particular relates to an amphoteric adsorbent prepared from distiller's grains, a preparation method and application thereof. Background technique [0002] Dyes are easily soluble in water, bright in color and stable in chemical structure. They are refractory toxic substances with poor natural purification ability. Once they enter the environment, they are difficult to remove from the environment. They can accumulate in organisms and may accumulate directly or indirectly through the food chain. affect human health. Therefore, research on the control technology of such pollutants has always been a hot and difficult point in the field of environmental science and technology research. At present, the methods for treating dye wastewater mainly include photodegradation, flocculation, oxidation, and adsorption. Among them, the adsorption me...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/24B01J20/28B01J20/3085B01J2220/4887C02F1/286C02F2101/308
Inventor 李成涛吴妮张敏
Owner SHAANXI UNIV OF SCI & TECH
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