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Cationic adsorbent prepared from grain stillage, preparation method for cationic adsorbent and application of cationic adsorbent

A technology of cation adsorption and distiller's grains, applied in the field of brewing waste resource utilization and environmental protection, can solve problems such as environmental pollution and waste of resources, and achieve the effects of low reaction energy consumption, increased adsorption rate, and simple operation.

Inactive Publication Date: 2017-12-05
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Distiller's grains are rich in cellulose, crude fiber and amino acids. The surface contains functional groups such as hydroxyl and carbonyl groups. It is a kind of economical and excellent biosorption material. In recent years, distiller's grains are mainly used as feed, but a large part of them are directly discarded. , while wasting resources, pollute the environment

Method used

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  • Cationic adsorbent prepared from grain stillage, preparation method for cationic adsorbent and application of cationic adsorbent
  • Cationic adsorbent prepared from grain stillage, preparation method for cationic adsorbent and application of cationic adsorbent
  • Cationic adsorbent prepared from grain stillage, preparation method for cationic adsorbent and application of cationic adsorbent

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Embodiment 1

[0029] A method for a cationic adsorbent prepared from distiller's grains, comprising the following steps:

[0030] 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 subsequent use;

[0031] 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, drying at 30°C to obtain pretreated distiller's grains;

[0032] 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 60 r / min for 0.1 h, add 0.2 parts of ethylenediamine and 0.3 parts of trimethyl The amine was reacted for 0.5h, washed twice with absolute ethanol, then washed with deionized water until neu...

Embodiment 2

[0034] A method for a cationic adsorbent prepared from distiller's grains, comprising the following steps:

[0035] 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, obtain the second lye, cool to room temperature for subsequent use;

[0036] 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 drying at 45°C to obtain pretreated distiller's grains;

[0037] 3) In terms of parts by mass, add 3 parts of pretreated distiller's grains to 4 parts of the second lye, stir at 30°C and 80r / min for 3 hours, add 1 part of dimethylamine and 4 parts of diethylenetri The amine was reacted for 5 hours, washed three times with absol...

Embodiment 3

[0039] A method for a cationic adsorbent prepared from distiller's grains, comprising the following steps:

[0040] 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 subsequent use;

[0041] 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 drying to obtain pretreated distiller's grains;

[0042] 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 140r / min for 3.5h, add 10 parts of tetradecyl trimethyl chloride React with ammonium for 3 hours, wash with absolute ethanol for 5 times, and then wash with deionized water un...

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Abstract

The invention discloses a cationic adsorbent prepared from grain stillage, a preparation method for the cationic adsorbent and an application of the cationic adsorbent and belongs to the fields of brewage waste resource utilization and environmental protection. The cationic adsorbent is prepared through taking the grain stillage as a base material, firstly, carrying out pretreatment by using alkali, and then, carrying out a reaction by using modifiers. The entire process is simple in operation and low in reaction energy consumption; and the raw materials for the method disclosed by the invention are wide in source and are economical and readily available. The cationic adsorbent prepared from the grain stillage, prepared by the method, has good adsorption performance; and compared with unmodified grain stillage, the cationic adsorbent has obviously improved adsorption capacity and adsorption rate to a congo-red solution under equivalent conditions. The cationic adsorbent has the characteristics of low cost, cyclic utilization and no environmental pollution. The cationic adsorbent prepared by the method has the adsorption removal rate of about 88% to 99.99% to one or more of 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 one or more of the dyes is about 1mg / g to 500mg / g.

Description

technical field [0001] The invention belongs to the fields of utilization and environmental protection of winemaking waste resources, and in particular relates to a cationic adsorbent prepared from distiller's grains, a preparation method and application thereof. Background technique [0002] Anionic 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. Indirectly 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 method has been widely researched and applied due to its advantages of low cost, simp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/30
CPCB01J20/24C02F1/286C02F2101/308
Inventor 李成涛吴妮张敏
Owner SHAANXI UNIV OF SCI & TECH
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