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Method for preparation of rime-like titanate by taking organic matters in methacrylic acid wastewater as template agent

A technology of methacrylic acid and template agent, applied in chemical instruments and methods, inorganic chemistry, alkali metal compounds, etc., can solve problems such as no reports, and achieve the effects of simple process, wide range of heavy metals, and low cost

Inactive Publication Date: 2014-12-17
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention utilizes the organic matter in the methacrylic acid wastewater as a complex dispersion and template agent to prepare a rime-like titanate heavy metal adsorbent. The research and application of this aspect have not been reported

Method used

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  • Method for preparation of rime-like titanate by taking organic matters in methacrylic acid wastewater as template agent
  • Method for preparation of rime-like titanate by taking organic matters in methacrylic acid wastewater as template agent
  • Method for preparation of rime-like titanate by taking organic matters in methacrylic acid wastewater as template agent

Examples

Experimental program
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Embodiment 1

[0025] The waste water that present embodiment uses is methacrylic acid waste water, and composition is shown in Table 1; Present embodiment method is as follows:

[0026] Take 10L of waste water, heat and evaporate the water and acetic acid therein, and recover sodium acetate. When the remaining amount of waste water is about 500mL, the material is discharged to obtain the complex template agent. Weigh 0.2 mol of calcium nitrate, dissolve it in 100 g of complexing template agent in a water bath at 60°C under stirring condition, keep stirring for 1 hour, and disperse evenly to obtain a jelly. Keep the water bath at 60°C, and add 0.2 mol of tetra-n-butyl titanate dropwise into the calcium-containing jelly under continuous vigorous stirring. After continuing to stir for 1 hour, put the jelly in an oven and dry it at 105°C to obtain a calcium titanate gel. Calcinate it at 750°C for 8 hours in the air atmosphere, and cool it down to room temperature naturally in the furnace to ob...

Embodiment 2

[0028] Weigh 0.02 mol of calcium nitrate, and dissolve it in 100 g of the complexing template agent obtained in Example 1 in a water bath at 60° C. under stirring conditions, continue stirring for 1 hour, and disperse evenly to obtain a jelly. Keep the water bath at 60°C, and add 0.02 mol of tetra-n-butyl titanate dropwise into the calcium-containing jelly under continuous vigorous stirring. After continuing to stir for 1 hour, put the jelly in an oven and dry it at 105°C to obtain a calcium titanate gel. Calcinate it at 750°C for 8 hours in the air atmosphere, and cool it down to room temperature naturally in the furnace to obtain rime-like nano-calcium titanate. Adsorbent.

Embodiment 3

[0030] Weigh 0.2 mol of calcium nitrate, and dissolve it in 100 g of the complexing template agent obtained in Example 1 in a water bath at 60° C. under stirring conditions, continue stirring for 1 hour, and disperse evenly to obtain a jelly. Keep the water bath at 60°C, and add 0.2 mol of tetra-n-butyl titanate dropwise into the calcium-containing jelly under continuous vigorous stirring. After continuing to stir for 1 hour, put the jelly in an oven and dry it at 105°C to obtain a calcium titanate gel. Calcinate it at 850°C for 8 hours in an air atmosphere, and cool it down to room temperature naturally in the furnace to obtain a rime-like nano-calcium titanate. Adsorbent.

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Abstract

The invention relates to a method for preparation of a rime-like titanate by taking organic matters in methacrylic acid wastewater as a template agent. The method comprises the technical steps of: 1. letting wastewater enter an evaporator directly, recovering sodium acetate, when an evaporation residual waste liquor accounts for 3%-10% of the volume of the original wastewater, conducting discharge to obtain a sticky complexing template agent; 2. according to the ratio of the mole number of alkaline-earth metals to the mass of the complexing template agent of not greater than 1:400, weighing a nitrate, dissolving it in a 60DEG C water bath, adding the product into the sticky complexing template agent obtained in step 1 to obtain a jelly; 3. weighing tetra-n-butyl titanate according to the mole ratio of alkaline-earth metal ions to titanium at 1:1, carrying out stirring at 60DEG C, adding tetra-n-butyl titanate into the jelly prepared in step 2, further performing stirring for 1h, and conducting drying at 105DEG C to obtain a titanate gel; 4. calcining the gel prepared in step 3 for 8h at 600-900DEG C, thus obtaining a rime-like titanate adsorbent. The method provided in the invention has the advantages of simple process, stability, easy control, and low cost.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a method for preparing a rime-like titanate adsorbent by using organic matter in methacrylic acid wastewater as a complex template agent. Background technique [0002] Heavy metals are a class of pollutants that are highly toxic, cannot be biodegraded, and can accumulate in living organisms. The treatment methods for heavy metal wastewater mainly include chemical precipitation, adsorption, ion exchange, and electrochemical methods. Among these methods, the adsorption method has wide adaptability, good treatment effect, and no secondary pollution. At the same time, useful substances can be recovered, and it has received extensive attention in the treatment of heavy metal wastewater. The core of the adsorption method is the development and utilization of adsorbents. At present, people have developed many adsorbents, such as activated carbon, bentonite, fly ash, zeolite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30C02F1/28C02F1/62
Inventor 王敏张东周波生方得安
Owner SHENYANG LIGONG UNIV
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