Multifunctional palygorskite base adsorbing material

An adsorption material and multi-functional technology, which can be used in adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc., and can solve the problems of narrow application field, low removal rate of phenolic compounds, single target pollutants, etc.

Active Publication Date: 2011-09-21
金湖县农副产品营销协会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Science and Technology Innovation Herald" 2009 (5): 131-132, preparation of attapulgite-starch granule adsorbent and its application in wastewater treatment [J] by studying the types of granulation additives, calcination temperature and holding time and other factors The effect of attapulgite-starch granules on decolorization, the results show that the compound attapulgite granules have good decolorization effect, but the application field is narrow
"Guangdong Chemical Industry" 2010,37(1): 20-22. Research on the adsorption performance of attapulgite activated carbon composite filter material on Congo red [J], which uses attapulgite activated carbon composite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] (1) Pretreatment of palygorskite: Stir the natural palygorskite with 1.0mol / L dilute hydrochloric acid, wash, dry, crush, and pass through a 200-mesh sieve.

[0067] (2) Accurately weigh a certain amount (9g) of composite carbon source (3g of sucrose, 3g of cyclodextrin, 3g of chitosan) and 2.7g of ammonium ferrous sulfate hexahydrate to make it completely soluble in water, add pretreated Palygorskite 1g, stirred slightly, and then treated with 30KHz ultrasonic waves for 20min to form a suspension solution; filtered, dried, placed in a muffle furnace, under the protection of nitrogen, roasted at 180°C for 2h to obtain a black adsorbent, ground, spare.

[0068] (3) Adsorption performance: The removal rate of phenol in the solution (initial concentration is 5mg / L) can reach 82%, and the removal rate of heavy metal ions such as lead ion, cadmium ion and nickel ion is close to 100%. and the color is almost completely removed.

Embodiment 2

[0070] (1) Same as Embodiment 1.

[0071] (2) Accurately weigh a certain amount (6g) of composite carbon source (2.4g sucrose, 2.4g cyclodextrin, 1.2g chitosan) and 1.8g ammonium ferrous sulfate hexahydrate to make it completely soluble in water, add Pretreated palygorskite 0.67g, stirred slightly, and then treated with 30Hz ultrasonic waves for 20min to form a suspension solution; filtered, dried, placed in a muffle furnace, and roasted at 180°C for 2h under the protection of nitrogen to obtain a black Adsorbent, ground, ready for use.

[0072] (3) Adsorption performance: The removal rate of phenol in the solution (initial concentration is 5mg / L) can reach 63%, and the removal rate of heavy metal ions such as lead ion, cadmium ion and nickel ion is close to 100%. and the color is almost completely removed.

Embodiment 3

[0074] (1) Same as Embodiment 1.

[0075] (2) Accurately weigh a certain amount (6g) of composite carbon source (2g sucrose, 2g cyclodextrin, 2g chitosan) and 1.8g ammonium ferrous sulfate hexahydrate to make it completely soluble in water, add pretreated Palygorskite 1g, stirred slightly, and then treated with 30Hz ultrasonic waves for 20min to form a suspension solution; filtered, dried, placed in a muffle furnace, under the protection of nitrogen, roasted at 180°C for 2h to obtain a black adsorbent, ground ,spare.

[0076] (3) Adsorption performance: The removal rate of phenol in the solution (initial concentration is 5mg / L) can reach 57%, and the removal rate of heavy metal ions such as lead ion, cadmium ion and nickel ion is close to 100%. and the color is almost completely removed.

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Abstract

The invention provides a multifunctional palygorskite base adsorbing material, which takes palygorskite clay as a carrier, a compound of cane sugar, beta-cyclodextrin and chitosan as a carbon source, and ammonium ferrous sulfate hexahydrate as a catalyst, and is prepared by a direct roasting method. Proven by experiments, the composite material has the efficacy of efficiently removing organic matters, heavy metal ions, colors and odors. Thus, the composite material has great application potential in the aspects of treating wastewater, such as toxic organic matters, heavy metal ions, dyes and the like.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a composite adsorption material, in particular to a multifunctional palygorskite-based adsorption material with palygorskite (PGS) as a carrier. Background technique [0002] At present, with the rapid development of steel, oil refining, petrochemical, plastic, synthetic fiber and other industries, the types and quantities of phenolic wastewater are also increasing. When the concentration of phenolic compounds in wastewater is too high, it will bring obvious toxicity to organisms. The treatment methods of phenol-containing wastewater mainly include extraction method, biodegradation method, adsorption method and photocatalytic degradation method, etc. Among them, the adsorption method is a physical and chemical method suitable for both high and low concentration wastewater, and does not introduce new pollutants, which can effectively treatment of phenolic wastewater. ...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/22B01J20/30C02F1/28
Inventor 雷自强武战翠张惠怡沈智张哲马国富王其召
Owner 金湖县农副产品营销协会
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