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Organic porous gel absorbent, preparation method and application thereof

An adsorbent and organic technology, applied in the field of organic porous gel adsorbent and its preparation, can solve the problems of long adsorption time of activated carbon, high post-treatment cost, difficult regeneration, etc., and achieve easy mass industrial production, easy recovery, and easy operation. handy effect

Active Publication Date: 2012-07-04
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the activated carbon adsorption method is an early application method, which is very effective for removing water-soluble organic dyes, but the activated carbon adsorption time is long, the regeneration is difficult, and the post-treatment cost is high, which limits its application.

Method used

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  • Organic porous gel absorbent, preparation method and application thereof
  • Organic porous gel absorbent, preparation method and application thereof
  • Organic porous gel absorbent, preparation method and application thereof

Examples

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Embodiment 1

[0028] Embodiment 1, preparation organic porous gel adsorbent

[0029] The preparation of the organic porous gel adsorbent in this embodiment comprises the following steps:

[0030] (a) get phthaloyl chloride, L-phenylalanine methyl ester hydrochloride, triethylamine; the mol ratio of said phthaloyl chloride, L-phenylalanine methyl ester hydrochloride, triethylamine 1:2:6; the raw materials can be obtained from open commercial channels;

[0031] (b) Cool the anhydrous dichloromethane solution of L-phenylalanine methyl ester hydrochloride to 0°C, add triethylamine, and then add the anhydrous dichloromethane solution of terephthaloyl chloride to obtain a reaction solution ; The reaction solution was slowly raised to room temperature and stirred for 12 to 16 hours;

[0032] (c) Rotate the reaction solution, add deionized water, collect the precipitate by filtration, recrystallize the obtained precipitate with ethanol, filter and dry in an oven for 10 to 12 hours at a drying t...

Embodiment 2

[0035] Embodiment 2, the use of organic porous gel adsorbent

[0036] 2.1 Adsorption of methylene blue

[0037] First, dissolve 36.6mg of gel adsorbent powder in 1ml of sodium hydroxide solution (2M), then add 10ml of hydrochloric acid solution (0.3M) to make 11ml of hydrogel (3.33mg / ml), add 4ml of The methylene blue solution (0.1 mg / ml) was mixed evenly and then filtered with a needle filter. After the treatment, the adsorption rate of the adsorbent to methylene blue was as high as 97.61%. Adsorption process see image 3 : After the dry gel was dissolved with sodium hydroxide solution, hydrogel was acidified by adding hydrochloric acid; methylene blue was added to the hydrogel and mixed evenly with the gel; the mixed solution of hydrogel and dye was filtered with a needle filter; Test the ultraviolet-visible spectrogram (see Figure 4 The characteristic absorption peak intensity of methylene blue in the filtrate after hydrogel treatment is 0.0537, and the characteristic...

Embodiment 3

[0042] Embodiment 3, recycling of organic porous gel adsorbent

[0043] Dissolve 500 mg of methylene blue adsorbent in 5 ml of sodium hydroxide solution, then add 35 ml of chloroform for extraction, take the upper aqueous solution, add hydrochloric acid solution to acidify it into a gel, filter, and dry. The recovery rate can reach 90%. see recycling process Figure 9 : After 500mg of dye adsorbent is used to adsorb methylene blue dye, after dissolving with sodium hydroxide, extracting with chloroform, acidifying with hydrochloric acid, filtering and drying, the recovered quality by weighing is 450mg, and the recovery rate is 90%.

[0044] In summary, the organic porous gel adsorbent of the present invention is a low molecular weight gel adsorbent with a porous structure of activated carbon; the organic gel adsorbent can quickly and efficiently capture the dyes, and the adsorbent is easy to recover and low in cost. The dye adsorption process is carried out at room temperat...

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Abstract

The invention relates to an organic porous gel absorbent for quick treatment of dye wastewater in printing and dyeing industry, a preparation method and application of the organic porous gel absorbent. The organic porous gel absorbent is 1,4-phenyl phenylalanine. The preparation method comprises the steps of preparing 1,4-phenyl phenylalanine methyl ester from phthaloyl chloride, L-phenylalanine methyl ester hydrochloride and triethylamine; and preparing the dyeing absorbent 1,4-phenyl phenylalanine from 1,4-phenyl phenylalanine methyl ester. The invention also relates to the application of the organic porous gel absorbent as a quick absorbent in dye wastewater treatment. The organic porous gel absorbent provided by the invention is a low-molecular-weight gel absorbent with an active carbon porous structure, and can rapidly and efficiently capture dyes in the industrial wastewater through phi-phi interaction, with the advantages of easy recovery and low cost. The dye adsorption can beconducted by simple operation at normal temperature, so that the organic porous gel absorbent has actual application value.

Description

technical field [0001] The invention relates to an adsorbent in the technical field of textile industry and its preparation method and use, in particular to an organic porous gel adsorbent used for rapid treatment of dye wastewater in the printing and dyeing industry and its preparation method and use. Background technique [0002] The rapid development of textile printing and dyeing industry has caused serious pollution to our country's water environment. According to incomplete statistics, 60,000 tons of dyes are discharged in the form of waste every year. These dye wastewater often contain a variety of organic dyes and intermediates, with high concentration, deep color, strong toxicity and refractory degradation. They have constituted an increasingly serious threat to the ecological environment of water bodies. Therefore, the treatment of dye industry wastewater has become a major problem that needs to be solved urgently at home and abroad. The commonly used dye wastew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F103/30
Inventor 冯传良窦晓秋张荻
Owner SHANGHAI JIAO TONG UNIV
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