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A kind of preparation method of quaternary ammonium salt/oxide modified biohybrid material

A bio-hybridization and oxide technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of toxic by-products, serious secondary pollution, complex synthesis process, etc., and achieve high adsorption selectivity , the processing capacity is improved, and the raw materials are environmentally friendly.

Active Publication Date: 2019-03-08
山东欣广化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of amination modification of straw, various toxic chemical raw materials such as N,N-dimethylformamide, epichlorohydrin, ethylenediamine, trimethylamine / triethylamine / urea were used to synthesize The process is complex and produces toxic by-products, causing serious secondary pollution

Method used

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  • A kind of preparation method of quaternary ammonium salt/oxide modified biohybrid material
  • A kind of preparation method of quaternary ammonium salt/oxide modified biohybrid material
  • A kind of preparation method of quaternary ammonium salt/oxide modified biohybrid material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Mix 3 g of wheat straw particles with 50 mL of a mixed solvent (methanol and 5% NaOH aqueous solution at a volume ratio of 1:1), and then program the temperature to 50 °C. Then 20mL of 3-chloro-2-hydroxypropyltrimethylammonium chloride (CTA) was evenly added dropwise at a rate of 5mL / min into the mixture, and stirred at 50°C for 1 hour. After filtration, the product was washed with water until neutral, and dried in vacuum at 30°C for 4 hours to obtain an anionic bio-exchanger modified with quaternary ammonium salt;

[0029] (2) Weigh 3g of the above bio-exchanger and add 10g FeCl 3 ·6H 2 O and 35mL HCl (0.1mol / L) mixed solution, stirred at 25°C for 2 hours. The material was filtered out with a strainer and added to 50mL NaOH (5wt%) solution, stirred and reacted at 25°C for 2 hours. After the completion, the product was washed with water until neutral, then washed with 5wt% NaCl solution and deionized water, and dried in vacuum at 25°C for 6 hours to obtain a quat...

Embodiment 2

[0032](1) Mix 7 g of cassava stalk particles with 50 mL of a mixed solvent (isopropanol and 10% NaOH aqueous solution at a volume ratio of 3:1), and then program the temperature to 60 °C. Then 35 mL of 3-chloro-2-hydroxypropyltrimethylammonium chloride (CTA) was evenly added dropwise at a rate of 10 mL / min into the mixture, and stirred at 60°C for 2 hours. After filtration, the product was washed with water until neutral, and dried in vacuum at 40°C for 6 hours to obtain an anionic bio-exchanger modified with quaternary ammonium salt;

[0033] (2) Weigh 5g of the above bio-exchanger and add 20g LaCl 3 ·6H 2 O and 60mL HCl (0.3mol / L) mixed solution, stirred at 40°C for 3 hours. The material was filtered out with a strainer and added to 80mL NaOH (10wt%) solution, stirred and reacted at 40°C for 4 hours. After the end, the product was washed with water until neutral, then washed with 8wt% NaCl solution and deionized water, and dried in vacuum at 40°C for 6 hours to obtain a q...

Embodiment 3

[0036] (1) Mix 11 g of cotton stalk particles with 110 mL of a mixed solvent (ethanol and 15% NaOH aqueous solution at a volume ratio of 5:1), and then program the temperature to 70 °C. Then 60 mL of 3-chloro-2-hydroxypropyltrimethylammonium chloride (CTA) was evenly added dropwise to the mixture at a rate of 20 mL / min, and stirred at 70°C for 4 hours. After filtration, the product was washed with water until neutral, and dried in vacuum at 50°C for 10 hours to obtain an anionic bio-exchanger modified with quaternary ammonium salt;

[0037] (2) Weigh 10g of the above bio-exchanger and add 40g of ZrOCl 2 ·8H 2 O and 160mL HCl (0.5mol / L) mixed solution, stirred at 50°C for 6 hours. The material was filtered out with a filter screen and added to 150mL NaOH (15wt%) solution, stirred and reacted at 50°C for 6 hours. After the end, the product was washed with water until neutral, then washed with 10wt% NaCl solution and deionized water, and dried in vacuum at 50°C for 10 hours to...

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Abstract

The invention discloses a preparation method of a quaternary ammonium salt / oxide modified biological hybrid material. The preparation method includes: using straw as the raw material and using 3-chloro-2-hydroxypropyl trimethyl ammonium chloride as the etherifying agent for modifying so as to prepare cellulose anionic etherate; loading metal oxide onto the surface of the cellulose anionic etherate to obtain the quaternary ammonium salt / oxide modified biological hybrid material, wherein the metal oxide is iron oxide, lanthanum oxide or zirconia. The preparation method is safe and nontoxic in raw material, simple in synthesizing process and environmentally friendly.

Description

technical field [0001] The invention relates to a preparation method of biohybrid materials modified with quaternary ammonium salts and nano oxides, which can be applied to the treatment of various anionic pollutant wastewater containing arsenic, selenium, phosphorus, etc., and belongs to wastewater treatment and agricultural resource utilization Utilize fields. Background technique [0002] Arsenic and selenium are typical toxic and harmful elements, which are extremely toxic to organisms including humans. Phosphorus is one of the key causes of eutrophication in water bodies and is also a non-renewable precious mineral resource. Therefore, both domestically and internationally, the content of arsenic, selenium and phosphorus in water bodies is strictly limited. In addition, my country is a large agricultural country, which produces hundreds of millions of tons of straw every year, and its improper disposal (such as incineration, etc.) has caused serious air pollution. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/10
CPCB01J20/06B01J20/24B01J2220/46B01J2220/4806B01J2220/4812B01J2220/4825C02F1/28C02F1/281C02F1/286C02F2101/103C02F2101/105C02F2101/106
Inventor 邱慧梁晨秦智峰刘乐乐戴海洋朱天包歆莹
Owner 山东欣广化学有限公司
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