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Preparation method and application of Fe-Ti binary oxide adsorbent for removal of antimony

A binary oxide and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve problems such as lack of adsorbents, and achieve high removal efficiency, low cost, and low energy consumption Effect

Active Publication Date: 2018-07-10
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of efficient adsorbents for the deep adsorption treatment of antimony-contaminated wastewater at home and abroad.

Method used

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  • Preparation method and application of Fe-Ti binary oxide adsorbent for removal of antimony
  • Preparation method and application of Fe-Ti binary oxide adsorbent for removal of antimony
  • Preparation method and application of Fe-Ti binary oxide adsorbent for removal of antimony

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Effect test

Embodiment 1

[0029] Embodiment 1: a kind of preparation method of the Fe-Ti binary oxide adsorbent for antimony of the present invention (such as figure 1 shown)

[0030] Under the state of magnetic stirring (100rpm), 0.25mol titanium tetrachloride (TiCl 4 ) was slowly injected into 1L of 0.5M ferric chloride (dissolved in 0.1M HCl) solution; at the same time, 1M NaOH solution was slowly added dropwise until the pH value remained at 6.00±0.02, and the mixed solution was ultrasonically dispersed for 30 minutes to obtain a suspension. The suspension was stirred at a speed of 200rpm for 0.8h; then the gelatinous yellow-brown precipitate was aged in the mother liquor for 4 days; an activated layer with strong adsorption capacity was formed on the surface of the adsorbent material, and the precipitate was separated from the solid and liquid , the brown-yellow precipitate was washed 5 times with deionized water, and the volume ratio of the volume of each washing water to the reaction system was...

Embodiment 2

[0031] Embodiment 2: a kind of preparation method of Fe-Ti binary oxide adsorbent for antimony of the present invention (such as figure 1 shown)

[0032] In the state of magnetic stirring (100rpm), slowly inject 1mol of titanium sulfate into 1L of 0.2M ferric sulfate (dissolved in 0.1M HCl) solution; at the same time, slowly add 1M NaOH solution dropwise until the pH value remains at 5.0, and ultrasonically disperse the mixture After 10 minutes, the suspension was obtained, and the suspension was stirred at a speed of 200 rpm for 0.5 hours; then the gelatinous yellow-brown precipitate was aged in the mother liquor for 2 days; the surface of the adsorption material was activated to generate a strong adsorption capacity. layer, precipitation and solid-liquid separation, the brown-yellow precipitate was washed 5 times with deionized water, the volume ratio of each washing water to the reaction system was 2:1, until the pH of the washed water was 7.0, the suspended solid was centr...

Embodiment 3

[0033] Embodiment 3: a kind of preparation method of Fe-Ti binary oxide adsorbent for antimony of the present invention (as figure 1 shown)

[0034] Under magnetic stirring (100rpm), slowly inject 1mol of titanium nitrate into 1L of 5M ferric nitrate (dissolved in 0.1M HCl) solution; at the same time, slowly add 1M NaOH solution dropwise until the pH value remains at 7.0, and ultrasonically disperse the mixture for 50min After obtaining the suspension, the suspension is 200rpm according to the rotating speed, and continues to stir for 1h; then the gelatinous yellow-brown precipitate is aged in the mother liquor for 6 days; the surface of the adsorption material is made to generate an active layer with strong adsorption capacity. Precipitation and solid-liquid separation, wash the brown-yellow precipitate with deionized water 5 times, the volume ratio of each washing water to the reaction system is 2:1, until the pH of the washed water is 7.0, the suspended solid is centrifuged...

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Abstract

Belonging to the field of heavy metal polluted water treatment, the invention discloses a preparation method and application of an Fe-Ti binary oxide adsorbent for removal of antimony. The adsorbent adopts an iron salt and a titanium salt as the raw materials, pH regulation, co-precipitation, ultrasonic dispersion, ageing, centrifugation, washing, drying, grinding, and sieving are carried out to obtain the Fe-Ti binary oxide adsorbent. The adsorbent combines the advantages of iron oxide and titanium oxide, has a lot of rough micro-adsorption channels and a large specific surface area, containsrich hydroxyl on the surface, has fast adsorption speed and high adsorption capacity, and can achieve collaborative adsorption of antimony in wastewater selectively. The adsorbent prepared by the method provided by the invention can be applied to deep purification and safety control of antimony in wastewater.

Description

technical field [0001] The invention belongs to the field of treatment of heavy metal polluted water bodies, and is especially suitable for deep purification and safety control of antimony in industrial waste water, domestic sewage, ground water and sudden polluted waste water. Specifically relates to a preparation method and application of an Fe-Ti binary oxide adsorbent for removing antimony. Background technique [0002] Antimony, as an important non-ferrous metal, is regarded as one of the global strategic resources and is used in many industrial fields. The reserves and output of antimony in my country rank first in the world. In recent years, natural movement and human activities have exacerbated antimony pollution. Antimony-containing wastes have been released into natural water bodies through rock weathering, atmospheric deposition, rainwater erosion, and human discharge. Antimony pollution has become very common. Antimony is a toxic and harmful element. Antimony is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06C02F1/28B01J20/30C02F101/20
CPCB01J20/06C02F1/281C02F2101/20
Inventor 何孟常龙晓静褚建文王新
Owner BEIJING NORMAL UNIVERSITY
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