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Preparation method of gel material for adsorbing heavy metal ions and phenolic compound and product of gel material

A technology for phenolic compounds and heavy metal adsorption, applied in the directions of alkali metal compounds, alkali metal oxides/hydroxides, chemical instruments and methods, etc., can solve the problem that the treatment effect is not ideal and cannot effectively remove phenolic compounds from water at the same time. and other problems, to achieve the effect of being suitable for industrial application, low production cost, and strength improvement

Inactive Publication Date: 2016-03-16
TIANJIN JINLIN WATER TREATMENT SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the shortcomings of the existing gel adsorption materials, which are not ideal for the treatment of heavy metal ions in wastewater and cannot effectively remove phenolic compounds in water at the same time, the technical problem to be solved by the present invention is to provide a method that can absorb nickel in water. , chromium, lead and other heavy metal ions, and can effectively remove phenolic compounds in water, and the preparation method and product of composite gel material with large adsorption capacity and high adsorption efficiency for phenolic compounds and heavy metal ions in water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Pretreatment of attapulgite. Weigh 10g of attapulgite with a particle size of 300 mesh, wash with 1L of distilled water, take its supernatant after precipitation, centrifuge at 500rpm for 1min, take its supernatant, add a small amount of distilled water to the supernatant and mix evenly, and then continue to centrifuge at 500rpm for 1min. Then take the supernatant, wash the supernatant repeatedly like this for 3 times, and finally carry out centrifugation at 4000rpm, take the precipitate, vacuum dry at 90°C for 24 hours, grind and sieve to obtain purified attapulgite.

[0028] Prepare a hydrochloric acid solution with a concentration of 0.5mol / L, add 10g of purified attapulgite and 150mL of hydrochloric acid solution into a small beaker and stir and mix. After 5min, heat the mixture to 70°C, stir for 1h, then oscillate ultrasonically for 30min, and filter with suction. Wash with distilled water until the pH is about 6, dry in vacuum at 90°C for 24 hours, grind and s...

Embodiment 2

[0035] (1) Pretreatment of attapulgite. Weigh 10g of attapulgite with a particle size of 1000 mesh, wash it with 1L of distilled water, and take its supernatant after sedimentation, centrifuge at 500rpm for 1min, take its supernatant, add a small amount of distilled water to the supernatant and mix evenly, continue to centrifuge at 500rpm for 1min, and then take The supernatant, after repeated washing of the supernatant for 3 times in this way, is finally centrifuged at 4000rpm, and the precipitate is collected, dried in vacuum at 90°C for 24 hours, ground and sieved with a sieve corresponding to the particle size to obtain purified Attapulgite.

[0036] Prepare a hydrochloric acid solution with a concentration of 0.5mol / L, take 20g of purified attapulgite and 150mL of hydrochloric acid solution into a small beaker and stir and mix. After 5min, heat the mixture to 70°C, stir for 1h, then oscillate ultrasonically for 30min, and filter with suction. Wash with distilled water un...

Embodiment 3

[0043] (1) Pretreatment of attapulgite. Weigh 20g of attapulgite with a particle size of 300 mesh, wash it with 1L of distilled water, settle and take its supernatant, centrifuge at 500rpm for 1min, take its supernatant, add a small amount of distilled water to the supernatant and mix evenly, continue to centrifuge at 500rpm for 1min, and then take The supernatant, after repeated washing of the supernatant 5 times in this way, was finally centrifuged at 4000rpm, and the precipitate was taken, dried in vacuum at 90°C for 24 hours, ground and sieved with a sieve corresponding to the particle size to obtain purified Attapulgite.

[0044] Prepare a hydrochloric acid solution with a concentration of 3mol / L, take 10g of purified attapulgite and 150mL of hydrochloric acid solution into a small beaker and stir and mix. After 5min, heat the mixture to 80°C, stir for 2h, then oscillate ultrasonically for 30min, and filter with suction. Wash with distilled water until the pH is about 6,...

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Abstract

The invention relates to a preparation method of a composite gel material which has excellent adsorption capacity of heavy metal ions, such as lead, cadmium, nickel, chromium, and molybdenum, and a phenolic compound, such as phenol, methylphenol, and xylenol, at the same time, is high in adsorption quantity and efficiency, and can be reused after washing, and relates to a product of the composite gel material. Attapulgite is subjected to water washing and acid washing, and is modified through a sodium chloride solution, hexadecyltrimethylammonium bromide, and a humic acid to prepare humic-acid-modified attapulgite. The humic-acid-modified attapulgite and acrylamide hydrogel are compounded to prepare the product of the composite gel material. The preparation method of adsorption macromolecule hydrogel is simple in process and low in cost, does not require any special equipment, and is easy for industrial application. The strength of the prepared gel is greatly improved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polymer hydrogel having good adsorption function for heavy metal ions such as nickel, chromium and lead and phenolic compounds such as phenol, cresol and xylenol and a preparation method thereof. The gel material can not only adsorb heavy metal ions such as nickel, chromium, and lead in water, but also effectively remove phenolic compounds in water, and has a large adsorption capacity and high adsorption efficiency for phenolic compounds and heavy metal ions in water, and can be used in electroplating Wastewater treatment fields such as industrial and chemical industries. Background technique [0002] With the rapid development of my country's chemical industry and metallurgical industry, the pollution of wastewater containing heavy metal ions such as lead, copper, chromium, etc. from electrolytes, electroplating solutions, and mining and metal smelting processes is becoming mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F2/44C08K9/04C08K9/02C08K3/34B01J20/26B01J20/28B01J20/30C02F1/28C02F1/62C02F1/58
Inventor 郑仪薇赵义平张桂芳陈莉赵国部
Owner TIANJIN JINLIN WATER TREATMENT SCI & TECH CO LTD
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