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Water body heavy metal ion attapulgite adsorbent

A technology of heavy metal ions and attapulgite, which is applied in the direction of adsorbing water/sewage treatment, water pollutants, water/sewage treatment, etc., to achieve the effects of low price, strong adsorption capacity, and reduced preparation cost

Inactive Publication Date: 2018-11-16
LANZHOU KUNLUN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the treatment of heavy metal ion wastewater with attapulgite

Method used

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  • Water body heavy metal ion attapulgite adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A water heavy metal ion attapulgite adsorbent, comprising the steps of:

[0055] A. Acidification

[0056] Using attapulgite clay as raw material, attapulgite clay, water and sulfuric acid are prepared in parts by weight, 45-65 parts of attapulgite clay, 35-50 parts of water, 0.5-2 parts of sulfuric acid with a mass fraction of 98%, and the mass fraction Dilute 98% sulfuric acid in water, spray the diluted sulfuric acid on the attapulgite clay, stir evenly and stack for 24-72 hours;

[0057] B. smash

[0058] Pulverizing the acidified attapulgite clay;

[0059] C. Sieving

[0060]The crushed attapulgite clay is screened and divided into four specifications of less than 0.1mm, 0.1-0.3mm, 0.3-0.5mm and 0.5-1mm according to the particle size;

[0061] D. Roasting

[0062] Attapulgite clay of four specifications is roasted separately, after roasting at 450-550°C for 1-2 hours, the pellets are dehydrated and solidified, cooled naturally to room temperature to obtain fin...

Embodiment 2

[0068] A water heavy metal ion attapulgite adsorbent, comprising the steps of:

[0069] A. Acidification

[0070] Using attapulgite clay as raw material, attapulgite clay, water and sulfuric acid are prepared in parts by weight, 45-65 parts of attapulgite clay, 35-50 parts of water, 0.5-2 parts of sulfuric acid with a mass fraction of 98%, and the mass fraction Dilute 98% sulfuric acid in water, spray the diluted sulfuric acid on the attapulgite clay, stir evenly and stack for 24-72 hours;

[0071] B. smash

[0072] Pulverizing the acidified attapulgite clay;

[0073] C. Sieving

[0074] The crushed attapulgite clay is screened and divided into four specifications of less than 0.1mm, 0.1-0.3mm, 0.3-0.5mm and 0.5-1mm according to the particle size;

[0075] D. Roasting

[0076] Attapulgite clay of four specifications is roasted separately, after roasting at 450-550°C for 1-2 hours, the pellets are dehydrated and solidified, cooled naturally to room temperature to obtain fi...

Embodiment 3

[0082] A water heavy metal ion attapulgite adsorbent, comprising the steps of:

[0083] A. Acidification

[0084] Using attapulgite clay as raw material, attapulgite clay, water and sulfuric acid are prepared in parts by weight, 45-65 parts of attapulgite clay, 35-50 parts of water, 0.5-2 parts of sulfuric acid with a mass fraction of 98%, and the mass fraction Dilute 98% sulfuric acid in water, spray the diluted sulfuric acid on the attapulgite clay, stir evenly and stack for 24-72 hours;

[0085] B. smash

[0086] Pulverizing the acidified attapulgite clay;

[0087] C. Sieving

[0088] The crushed attapulgite clay is screened and divided into four specifications of less than 0.1mm, 0.1-0.3mm, 0.3-0.5mm and 0.5-1mm according to the particle size;

[0089] D. Roasting

[0090] Attapulgite clay of four specifications is roasted separately, after roasting at 450-550°C for 1-2 hours, the pellets are dehydrated and solidified, cooled naturally to room temperature to obtain fi...

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Abstract

The invention relates to a water body adsorbing material, in particular to a water body heavy metal ion attapulgite adsorbent. The water body heavy metal ion attapulgite adsorbent is characterized inthat attapulgite clay is acidified, and is roasted to form the attapulgite adsorbing material; the roasting, curing and forming temperature of the attapulgite adsorbing material is controlled within 550 DEG C, so that the crystal form of the attapulgite is not destroyed, and the physical and chemical properties are not changed; the attapulgite is an inorganic mineral material which is low in priceand is easy to obtain, and is a water-containing layer and chain type magnesium silicate mineral; the attapulgite crystal is in a hair shape or a fiber shape, is in a long column shape or a needle shape under an electronic microscope, shows the white, gray, light green or light brown color, and is in a fiber shape under an atom mechanical microscope; a plurality of hole passages are formed in theattapulgite, and the cross section of each hole passage is about 0.38 nm*0.63 nm; the surface area of the attapulgite is larger, the adsorption ability is stronger, more importance is attached to thewastewater treatment, and the application range of modified attapulgite is broader in the wastewater treatment.

Description

technical field [0001] The invention relates to a water body adsorption material, in particular to an attapulgite adsorbent for heavy metal ions in water. Background technique [0002] Water is the material basis for human survival and development, but with the development of industry, the problem of heavy metal pollution has become increasingly serious. The pollutants in water are mainly organic matter and heavy metal ions, and the absolute discharge of heavy metals in wastewater discharge accounts for about 66.33% of the total wastewater discharge. Wastewater containing heavy metal ions mainly comes from wastewater discharged from mining, smelting, electrolysis, electroplating, chemical and other industries and leachate from solid waste landfills. These heavy metals discharged into the environment are difficult to remove once they enter the water or soil, and gradually accumulate through the food chain, eventually leading to disease or even death of organisms. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12C02F1/281C02F2101/20
Inventor 任珺陶玲杨宜珺曹天轶张倩
Owner LANZHOU KUNLUN ENVIRONMENTAL PROTECTION TECH
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