Preparation method of distiller's grain adsorbing material for heavy metal ion adsorption

A technology for heavy metal ions and adsorbent materials, which is applied in the field of preparation of adsorbent materials for discarded lees of liquor, and achieves the effects of realizing waste recycling, great practical value and broad application prospects.

Inactive Publication Date: 2012-06-20
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no reports about using waste grains as adsorption materials to deal with heavy metal ions in aqueous solutions.

Method used

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  • Preparation method of distiller's grain adsorbing material for heavy metal ion adsorption
  • Preparation method of distiller's grain adsorbing material for heavy metal ion adsorption
  • Preparation method of distiller's grain adsorbing material for heavy metal ion adsorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Select the by-products produced by Luzhou-flavor liquor, and after natural drying, crush, pass through a 60-mesh sieve, and the under-sieve is the pre-treatment discarded grains; add 5 parts by weight (the unit can be kilograms, the same below) Add 50 parts by weight of a solution of hydrochloric acid, sodium hydroxide alkali and sodium carbonate with a concentration of 5% by mass, soak at a temperature of 60°C for 2 hours, filter, wash with 2 to 5 times the weight of water, and grind After that, the absorbent material for liquor discarded grains is obtained.

Embodiment 2

[0035] Select the by-product discarded grains produced by Luzhou-flavor liquor, after natural drying, pulverize, pass through an 80 mesh sieve, and the under-sieve is the pretreated discarded grains; 15 parts by weight of the pretreated discarded grains are added to 200 parts by weight In a solution of sulfuric acid, potassium hydroxide and sodium chloride with a concentration of 10%, soak at 100°C for 4 hours, filter, wash with 2 to 5 times the weight of water, dry at 40°C, and grind to obtain Absorbent material for liquor waste.

Embodiment 3

[0037] Choose the by-products produced by Luzhou-flavor liquor to lose grains, after natural drying, pulverize, pass through a 100-mesh sieve, and the under-sieve is the pre-treatment waste grains; add 30 parts by weight of dried distillers grains to a mass percentage concentration of 300 parts by weight It is a solution of 20% nitric acid, ammonia water and zinc chloride, soaked at 120°C for 5 hours, filtered, washed with 2 to 5 times the weight of water, dried at 50°C, and ground to obtain liquor distilled grains Adsorbent material.

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Abstract

The invention discloses a preparation method of a distiller's grain adsorbing material for heavy metal ion adsorption. The preparation method is characterized by comprising the following steps of: selecting byproduct grains from production of Luzhou-flavor distilled spirit, naturally drying, crushing, screening by a screen of 20-100 meshes, and collecting screen underflow to obtain pre-treated grains; and adding 1-30 parts by weight of pre-treated grains to 1-300 parts by weight of 1-20wt% acid aqueous solution, soaking at the temperature of 50-150 DEG C for 0.1-6 hours, filtering, washing solid with water to be neutral, drying at the temperature of 30-60 DEG C for 12-48 hours, and grinding to obtain the distiller's grain adsorbing material. According to the invention, the adsorbing material is prepared by adopting distiller's grains with wide sources, thus the process is simple and the cost is low; and the prepared adsorbing material is used for treatment of wastewater containing heavy metal ions, and the adsorption rate is up to 80-95%, thus the resource utilization of grain waste is realized and the purpose of treating a waste with another waste is achieved.

Description

technical field [0001] The invention belongs to the field of resource utilization of waste and water treatment, and relates to a preparation method of a liquor dregs adsorption material used for adsorption of heavy metal ions. The prepared liquor dregs adsorption material is especially suitable for the treatment of heavy metal ions (Pb 2+ 、Cd 2+ , Hg 2+ 、Cr 3+ 、Cr 6+ 、Ag + 、Cu 2+ , Zn 2+ etc.) Adsorption treatment of wastewater. Background technique [0002] With the rapid development of modern industry, the harm of heavy metal sewage to the environment and human health is becoming more and more serious. Heavy metal wastewater mainly comes from mining, mineral processing, smelting, electroplating, chemical industry, machinery and other industries. After the heavy metal wastewater produced by these industries is discharged into natural water bodies, it not only poses a threat to aquatic organisms, but may also be continuously enriched through precipitation, adsorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 林晓艳冯娟饶家权罗学刚
Owner SOUTHWEAT UNIV OF SCI & TECH
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