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Method for preparing organic mineralized refuses through modification of cationic and non-ionic surfactants

A non-ionic surface and surfactant technology, applied in the field of organically modified mineralized waste, can solve the problem of small adsorption capacity and achieve the effect of promoting adsorption capacity

Inactive Publication Date: 2012-12-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing organic mineralized garbage by modifying cationic-nonionic surfactants in order to overcome the disadvantage that the mineralized garbage in the prior art has a relatively small adsorption capacity of organic pollutants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Air-dry the mineralized garbage with a landfill age of 15 years, crush it to remove impurities, pass it through a 200-mesh sieve, and add it to a solution of cationic surfactant cetyltrimethylammonium chloride with a concentration of 800mg / L. Add 0.6g of mineralized waste to the surfactant solution, stir in a water bath at 80°C for 8 hours; add nonionic surfactant, add 0.3g of nonionic surfactant octylphenol polyoxyethylene ether (TritonX- 100), then stirred in a water bath at 80°C for 4 hours, the product was filtered, washed twice with distilled water, dried at 90°C, and activated at 105°C for 5 hours; ground, passed through a 100-mesh sieve, and prepared The organic mineralized garbage modified by cationic-nonionic surfactant is obtained.

[0015] Add the prepared cationic-nonionic surfactant-modified mineralized waste into 15mg / L nitrobenzene wastewater, the solid-liquid (mass) ratio is 1:2000, stir for 2 hours, let stand for 3 hours, precipitate and separate, UV-vi...

Embodiment 2

[0017] Air-dry the mineralized garbage with a landfill age of 8 years, crush it to remove impurities, pass through a 40-mesh sieve, weigh a certain amount and add it to a cationic surfactant octaalkyltrimethylammonium chloride solution with a concentration of 300 mg / L. Add 0.2g of mineralized waste per milliliter of cationic surfactant solution, stir in a water bath at 50°C for 2 hours; then add nonionic surfactant polyoxyethylene sorbitan monolaurate (Tween20), add 0.1g of non-ionic surfactant, then stirred in a water bath at 50°C for 2h, the product was filtered, washed twice with distilled water, dried at 60°C, activated at 110°C for 30min; ground, passed 50°C Mesh sieve to obtain organic mineralized garbage modified by cationic-nonionic surfactant.

[0018] Add the prepared cationic-nonionic surfactant-modified mineralized waste into 50mg / L phenol wastewater, the solid-liquid (mass) ratio is 1:3000, stir for 2 hours, let stand for 3 hours, precipitate and separate, and use...

Embodiment 3

[0020] Air-dry the 8-year-old mineralized waste, crush it to remove impurities, pass through a 100-mesh sieve, weigh a certain amount and add it to the cationic surfactant octadecyltrimethylammonium bromide solution with a concentration of 800mg / L Add 0.5g of mineralized waste per milliliter of cationic surfactant solution, stir in a water bath at 80°C for 6 hours; then add nonionic surfactant stearyl polyoxyethylene ether (Brij78), add 0.3g of Ionic surfactant, then stirred in a water bath at 80°C for 4 hours, the product was filtered, washed twice with distilled water, dried at 90°C, activated at 105°C for 4 hours; ground, passed through a 100-mesh sieve , to obtain cationic-nonionic surfactant-modified organic mineralized garbage.

[0021] Add the prepared cationic-nonionic surfactant-modified mineralized waste into 5mg / L benzene waste water, the solid-liquid (mass) ratio is 1:2000, stir for 2 hours, let stand for 3 hours, precipitate and separate, and measure by ultraviole...

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Abstract

The invention provides a method for preparing organic mineralized refuses through modification of cationic and non-ionic surfactants. The method comprises the following steps: 1) drying the mineralized refuses by air; crushing the dried mineralized refuses to remove impurities; filtering the mineralized refuses by a screen of 40-200 meshes; adding the mineralized refuses to an cationic surfactant solution; and stirring the mineralized refuses and the cationic surfactant solution in a water bath for 2-8 h at 50-80 DEG C; 2) adding the non-ionic surfactant to a mixture, wherein 0.1-0.3 g non-ionic surfactant is added to each gram of mineralized refuses; stirring the mixture in the water bath for 2-4 h at 50-80 DEG C; filtering an obtained product; washing the product by a distilled water; drying the product at 60-90 DEG C after filtering the product; activating the dried product for 30 minutes to 5 hours at 105-110 DEG C; grinding the product; and filtering the product by a screen of 50-100 meshes so as to prepare organic mineralized refuses modified by the cationic and non-ionic surfactants. The method for preparing the organic mineralized refuses through modification of the cationic and non-ionic surfactants, provided by the invention, has the advantage that the mineralized refuses are respectively modified by the cationic and non-ionic surfactants according to a certain mixing ratio so as to improve the adsorption quantity of the mineralized refuses to phenols.

Description

technical field [0001] The invention relates to the development of new materials for environmental pollution control, in particular to a method for organically modifying and mineralizing garbage. Background technique [0002] Mineralized waste refers to waste that has been buried in landfills for many years, basically stabilized, and can be mined and utilized. Compared with ordinary soil, mineralized waste has the characteristics of small bulk density, high porosity, high organic matter content, large cation exchange capacity, strong adsorption and exchange capacity, and is an ideal adsorbent. Some studies (A study on the correlation between the adsorption performance and structure of phenolic compounds in mineralized waste, Journal of Environmental Science, 2007, 27 (2): 247-251) showed that the adsorption of phenolic compounds in mineralized waste has a certain degree of adsorption The effect is the result of the joint action of distribution and chemical reaction. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28
Inventor 马建锋张天立李定龙姚超
Owner CHANGZHOU UNIV
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