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Tomato straw adsorbing material and preparation method thereof

A technology of tomato straw and adsorption material, which is applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of low treatment efficiency, high cost, difficult to popularize and use in a large range, etc., and achieves a simple and efficient process. Effect

Inactive Publication Date: 2014-09-10
吴涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the methods commonly used to treat wastewater containing heavy metals include flocculation, advanced oxidation, membrane separation, electrolytic reduction, etc. These methods are difficult to be widely used due to low treatment efficiency or high cost. People began to look for cheap and easy to obtain , a widely used method for treating wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Choose mature and tall tomato stalks, soak them in tap water, wash them to remove soil and dust, wash them with distilled water, and dry them at 80°C to constant weight; grind the dried tomato stalks into powder, and select Pass through a 60-mesh sieve to collect the powder; weigh 50 g of the obtained powder and soak it in deionized water, add 2 mL each of the activated 0.01 mol / L amylase solution and protease solution, react at 35-50 °C for 1 hour, and then add 10mL of 0.05mol / L KOH solution, react for 50 minutes, and then use H 2 SO 4 Neutralize the solution, filter the neutralized liquid, and then dry it; mix the dried powder and urea in a mass ratio of 1:1, then re-immerse in deionized water, react at 50°C for 6 hours, filter, Afterwards, wash with deionized water three times to remove residual ionic liquid, and then wash with 95% alcohol twice, after washing, put it into an electric heating constant temperature drying oven at 50°C to dry to obtain the tomato straw...

Embodiment 2

[0022] Choose mature and tall tomato stalks, soak them in tap water, wash them to remove soil and dust, wash them with distilled water, and dry them at 80°C to constant weight; grind the dried tomato stalks into powder, and select Pass through a 60-mesh sieve to collect the powder; weigh 50 g of the obtained powder and soak it in deionized water, add 2 mL each of the activated 0.05 mol / L amylase solution and protease solution, react at 35-50 ° C for 2 hours, and then add 10mL of 0.1mol / L KOH solution, react for 50 minutes, and then use H 2 SO 4 Solution neutralization. Filter the neutralized liquid, and then dry it; mix the dried powder and urea in a mass ratio of 1:1, then re-immerse in deionized water, react at 50°C for 8 hours, filter, and then use deionized Wash with water for 3 times to remove residual ionic liquid, and then wash with 95% alcohol for 2 times. After washing, put it into an electric heating constant temperature drying oven at 50°C to dry to obtain the tom...

Embodiment 3

[0024] Choose mature and tall tomato stalks, soak them in tap water, wash them to remove soil and dust, wash them with distilled water, and dry them at 80°C to constant weight; grind the dried tomato stalks into powder, and select Pass through a 60-mesh sieve to collect the powder; weigh 100 kg of the resulting powder and put it into a 3-ton sanitary storage tank, and inject an appropriate amount of deionized water into the tank, add 2 mL each of the activated 0.05mol / L amylase solution and protease solution, and React at 50°C for 2 hours, then add 5L of 0.1mol / L KOH solution, react for 1 hour, and then use H 2 SO 4 Neutralize the solution, filter the neutralized liquid with a plate-and-frame compressor, and then dry it; mix the dried powder and urea at a mass ratio of 1:1, put it into a 3-ton sanitary tank, and inject it into a deionized tank water, kept at 50°C for 8 hours, filtered, washed with deionized water 4 times to remove residual ionic liquid, and dried at 50°C afte...

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PUM

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Abstract

The invention discloses a preparation method of a tomato straw adsorbing material. The preparation method comprises the following steps: selecting natural tomato straws and washing the tomato straws; grinding the tomato straws into powder and sieving the powder; then carrying out enzymolysis with activated amylase and protease; then adding a KOH solution, reacting and then neutralizing the solution with a dilute H2SO4 solution; filtering and airing the solution, then mixing the aired powder with urea in a mass ratio of 1:1 uniformly, re-soaking the mixture in the deionized water and reacting for 5-10 hours; filtering and airing the solution, then washing the product with the deionized water or 95% of alcohol three-four times to remove the residual ionic liquid and drying the product after washing the product, thus obtaining the tomato straw adsorbing material. The adsorbing material has the characteristics of good adsorption property, simple preparation method, wide material source, low cost and the like.

Description

technical field [0001] The invention relates to a tomato straw adsorption material, in particular to an adsorption material which can be used for treating waste water and a preparation method thereof. Background technique [0002] With the development of industrialization, industrial technology has brought many new products to our life, but it has also caused a lot of pollution to the environment, especially heavy metal pollution. Heavy metal pollution is different from the pollution of other organic compounds. Many organic compounds can be purified physically, chemically or biologically in nature to reduce or eliminate their harmfulness. However, heavy metal pollution sources can be difficult to degrade for decades or even centuries. Heavy metal pollution is mainly pollution of water sources. After these polluted water sources enter the environment or ecosystem, they can be transferred, accumulated, and amplified through the food chain, thus bringing great harm to our live...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 吴涛
Owner 吴涛