A kind of kaolinite-humic acid composite colloid preparation method for adsorbing acetaminophen

A technology of paracetamol and humic acid, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems that have not yet been discovered, and achieve convenient industrial production, high specific surface area, and simple preparation process. Effect

Active Publication Date: 2020-03-31
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And there is no research report on the treatment of acetaminophen wastewater by composite colloidal adsorption

Method used

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  • A kind of kaolinite-humic acid composite colloid preparation method for adsorbing acetaminophen
  • A kind of kaolinite-humic acid composite colloid preparation method for adsorbing acetaminophen

Examples

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Embodiment 1

[0030] Such as figure 1 As shown, the method for preparing kaolinite-humic acid composite colloid in this embodiment specifically includes the following steps:

[0031] Step 1, dissolving: dissolve humic acid at a solid-to-liquid ratio (kg:m 3 ) at a ratio of 1:10 was dissolved in a sodium hydroxide solution with a concentration of 2% by mass to volume, magnetically stirred at a speed of 600 rpm at room temperature, stirred for 30 minutes until completely dissolved, and a colloidal solution of humic acid was obtained;

[0032] Step 2, mixed acidification co-precipitation: according to the ratio of kaolinite to humic acid mass ratio of 5:4, add kaolinite to the obtained humic acid colloid solution, and add concentrated hydrochloric acid to adjust the liquid phase pH to 1 , continuously stirred at 1100rpm during the adjustment process, and then stood in the dark at room temperature for 100min to obtain a composite colloidal dispersion;

[0033] Step 3, rotary evaporation: the ...

Embodiment 2

[0039] Such as figure 1 As shown, the method for preparing kaolinite-humic acid composite colloid in this embodiment specifically includes the following steps:

[0040] Step 1, dissolving: dissolve humic acid at a solid-to-liquid ratio (kg:m 3 ) in a ratio of 1:4 in a sodium hydroxide solution with a concentration of 6% by mass to volume, magnetically stirred at room temperature at 800 rpm, and stirred for 60 minutes until completely dissolved to obtain a colloidal solution of humic acid;

[0041] Step 2, mixed acidification co-precipitation: According to the mass ratio of kaolinite and humic acid of 1:1.25, kaolinite is added to the obtained humic acid colloid solution, and concentrated hydrochloric acid is added at the same time to adjust the liquid phase pH to 3, adjust Continue to stir at 1500rpm during the process, and then stand in the dark for 200min at room temperature to obtain a composite colloidal dispersion;

[0042] Step 3, rotary evaporation: the composite coll...

Embodiment 3

[0048] Such as figure 1 As shown, the method for preparing kaolinite-humic acid composite colloid in this embodiment specifically includes the following steps:

[0049] Step 1, dissolving: dissolve humic acid at a solid-to-liquid ratio (kg:m 3 Dissolve in a sodium hydroxide solution with a mass volume ratio of 4% in the ratio of )7:40, magnetically stir at 700 rpm at room temperature, stir for 45 minutes until completely dissolved, and obtain a colloidal solution of humic acid;

[0050] Step 2, mixed acidification co-precipitation: According to the mass ratio of kaolinite and humic acid of 1:0.88, kaolinite is added to the obtained humic acid colloid solution, and concentrated hydrochloric acid is added at the same time to adjust the pH of the liquid phase to 2. Continue to stir at 1300rpm during the process, and then stand in the dark for 150min at room temperature to obtain a composite colloidal dispersion;

[0051] Step 3, rotary evaporation: the composite colloidal dispe...

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Abstract

The invention discloses a preparation method of kaolinite-humic acid composite colloid for absorbing acetaminophen. The kaolinite-humic acid composite colloid is prepared by taking kaolinite and humic acid as a main raw material, mixing the humic acid colloid solution with quantified montmorillonite, and performing a series of post treatment steps with specific parameters. Through specific technical parameters, the kaolinite is organically compounded with humic acid together to obtain the absorbent material taking kaolinite as a wall material and the humic acid as the core material. The kaolinite-humic acid composite colloid has very high specific area and special charge property, and can provide enough absorbing site, thereby increasing the absorption capacity of the acetaminophen.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a material for treating waste water containing antibiotics, in particular to a preparation method and application of a kaolinite-humic acid composite colloid for absorbing acetaminophen. Background technique [0002] Acetaminophen (i.e. paracetamol) belongs to antipyretic and analgesic drugs, and it is one of the anti-inflammatory and pain-relieving drugs that are kept in the family. It is widely used. The toxicity of overdose may be manifested as kidney damage and acute liver failure. Poisonous compounds, if not handled properly and enter the environment, are very likely to form "pseudo-persistent" pollution, which in turn poses a great threat to human health and ecosystems. According to incomplete statistics, acetaminophen has been detected in the main water bodies of the Yangtze River Delta, Pearl River Delta, Liaohe River and Haihe River in my country. The sou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30
CPCB01J20/12B01J20/24B01J20/28016B01J2220/46
Inventor 赵钺
Owner BAOJI UNIV OF ARTS & SCI
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