Composite steel slag-based heavy metal adsorbent

A heavy metal and adsorbent technology, applied in non-metallic elements, adsorbed water/sewage treatment, silicon compounds, etc., can solve the problems of difficult natural degradation, heavy metal toxicity, enrichment, etc., to achieve safe reaction conditions, high adsorption efficiency, and reaction mild effects

Active Publication Date: 2019-12-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy metals are extremely toxic to the human body, and are easy to accumulate in the environment, making it difficult to degrade naturally

Method used

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  • Composite steel slag-based heavy metal adsorbent
  • Composite steel slag-based heavy metal adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Calculated according to the weight ratio, the parts by weight of the raw materials are: 6 parts of steel slag, 1 part of corn stalk, 2 parts of furnace ash, and 1 part of chitosan.

[0045] Pretreatment of steel slag: crush and sieve steel slag with a pulverizer, the particle size is controlled at 30 mesh, wash the crushed steel slag particles with distilled water, dry them in the air, and dry them in an oven at 50°C for 90 minutes. After drying the powder, put the dried powder into 1wt.% NaOH solution, the mass volume ratio of the powder to the alkaline solution is 1:50g / mL, stir at room temperature (about 25°C) for 60min, filter after reaction , Dry for later use.

[0046] Straw pretreatment: crush and sieve the corn stalks with a pulverizer, the particle size is controlled at 35 mesh, wash the crushed corn stalk particles with distilled water, and dry them for later use.

[0047] Pretreatment of furnace ash: Wash the furnace ash with distilled water, dry it in the a...

Embodiment 2

[0050]Calculated according to the weight ratio, the parts by weight of the raw materials are: 70 parts of steel slag, 10 parts of corn stalks, 25 parts of furnace ash, and 5 parts of chitosan.

[0051] Pretreatment of steel slag: crush and sieve steel slag with a pulverizer, the particle size is controlled at 30 mesh, wash the crushed steel slag particles with distilled water, dry them in the air, and dry them in an oven at 50°C for 90 minutes. Dry the powder, put the dried powder into 1wt.% NaOH solution, the mass volume ratio of the powder to the alkaline solution is 1:50g / mL, stir at room temperature (about 25°C) for 30min, filter after reaction , Dry for later use.

[0052] Straw pretreatment: crush and sieve the corn stalks with a pulverizer, the particle size is controlled at 35 mesh, wash the crushed corn stalk particles with distilled water, and dry them for later use.

[0053] Pretreatment of furnace ash: Wash the furnace ash with distilled water, dry it in the air, ...

Embodiment 3

[0056] Calculated according to the weight ratio, the parts by weight of the raw materials are: 70 parts of steel slag, 5 parts of corn stalks, 15 parts of furnace ash, and 5 parts of chitosan.

[0057] Pretreatment of steel slag: crush and sieve steel slag with a pulverizer, the particle size is controlled at 30 mesh, wash the crushed steel slag particles with distilled water, dry them in the air, and dry them in an oven at 50°C for 90 minutes. After drying the powder, put the dried powder into 1wt.% NaOH solution, the mass volume ratio of the powder to the alkaline solution is 1:50g / mL, stir at room temperature (about 25°C) for 60min, filter after reaction , Dry for later use.

[0058] Straw pretreatment: crush and sieve the corn stalks with a pulverizer, the particle size is controlled at 35 mesh, wash the crushed corn stalk particles with distilled water, and dry them for later use.

[0059] Pretreatment of furnace ash: Wash the furnace ash with distilled water, dry it in ...

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a composite steel slag-based heavy metal adsorbent. The composite steel slag-based heavy metal adsorbent isused for removing heavy metal ion pollutants in water. The heavy metal adsorbent comprises, by weight, 60-70 parts of steel slag, 5-10 parts of straws, 15-25 parts of furnace ash and 5-10 parts of anadhesive. The adsorbent can be used for removing heavy metals in water bodies such as rivers, lakes and factory wastewater.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a composite steel slag-based heavy metal adsorbent, which is used for removing heavy metal ion pollutants in water. [0002] technical background [0003] Vigorous industrial development, while bringing considerable economic benefits, has also brought serious environmental heavy metal pollution. Heavy metals are extremely toxic to the human body, and are easy to accumulate in the environment, making it difficult to degrade naturally. In the context of the current era of synergy between governance and development, the research on heavy metal adsorbents is a research direction with great prospects and environmental significance. [0004] Physical and chemical methods to remove heavy metal ions in water are methods of centrifugation, filtration, adsorption, and separation without changing the chemical properties and forms of heavy metals. Such methods include ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30C02F1/28C02F101/20
CPCB01J20/103B01J20/041B01J20/06B01J20/3042B01J20/3078C02F1/281B01J2220/4887B01J2220/4825C02F2101/20
Inventor 杜国强尹婷婷袁文振李恩超侯红娟汪庆丰武晟
Owner BAOSHAN IRON & STEEL CO LTD
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