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Method for preparing microwave synthesized inorganic-organic compound bentonite and application thereof

A technology of microwave synthesis and bentonite, applied in inorganic chemistry, chemical instruments and methods, alkali metal compounds, etc., can solve the problems of modified bentonite not easy to settle, time-consuming and energy-consuming, not easy enough, etc.

Pending Publication Date: 2017-01-11
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fact that the traditional bentonite modification process is not simple enough, time-consuming and energy-consuming, and some modified bentonites are not easy to settle after soaking in water, modified bentonites have not yet been popularized in the field of water treatment.

Method used

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  • Method for preparing microwave synthesized inorganic-organic compound bentonite and application thereof
  • Method for preparing microwave synthesized inorganic-organic compound bentonite and application thereof

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Effect test

Embodiment 1

[0019] C in the present invention 12 -The preparation method of Al-H-Wbent, the weight components and the production operation steps of each composition of its formula are: the lauryl polyglucoside quaternary ammonium salt and the aluminum chloride hexahydrate of the formula amount are taken by weighing and dissolved in a volume concentration of 40 % ethanol solution, stirred for 30 minutes to make solution A; then weighed the amount of sodium bentonite and added to solution A to make semi-dry reaction material B; then placed reaction material B in a microwave generator and radiated heating React for a certain period of time; the heated product is washed and dried at 105°C, the dried product is ground, and passed through a 100-mesh sieve to obtain C 12 -Al-H-Wbent.

[0020] The preparation method of above-mentioned a kind of microwave synthesis inorganic-organic composite bentonite is characterized in that the dosage of above-mentioned dodecyl polyglycoside quaternary ammoniu...

Embodiment 2

[0025] C in the present invention 8 -The preparation method of Al-H-Wbent, the weight components and production operation steps of each composition of its formula are: take the lauryl polyglucoside quaternary ammonium salt of formula quantity and aluminum chloride hexahydrate and be dissolved in volume concentration and be 20 % ethanol solution, stirred for 30 minutes to make solution A; then weighed the amount of sodium bentonite and added to solution A to make semi-dry reaction material B; then placed reaction material B in a microwave generator and radiated heating React for a certain period of time; the heated product is washed and dried at 105°C, the dried product is ground, and passed through a 100-mesh sieve to obtain C 8 -Al-H-Wbent.

[0026] The preparation method of above-mentioned a kind of microwave synthesis inorganic-organic composite bentonite is characterized in that the dosage of above-mentioned octaalkyl polyglycoside quaternary ammonium salt is 3g / 100g

[...

Embodiment 3

[0031] Weigh 0.6g of C 8 -Al-H-Wbent or C 12 -Al-H-Wbent, add 50ml of wastewater with a phosphorus mass concentration of 40mg / L, shake and adsorb at 60°C at 200r / min for 60min, use 1mol / L hydrochloric acid and sodium hydroxide to adjust the pH to 6.5, Centrifuge after the reaction, filter the supernatant through a 0.45um filter membrane, and use the resulting filtrate to measure the concentration of phosphorus in the liquid phase. The results showed that the residual concentration of phosphorus was less than 0.5mg / L.

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Abstract

The invention discloses a method for preparing microwave synthesized inorganic-organic compound bentonite and application thereof. The compound bentonite mainly comprises a montmorillonite crystal structure and specific exchangeable cations between montmorillonite crystal structural layers. The preparation scheme of the compound bentonite comprises the following steps: weighing prescribed alkyl glucoside quaternary ammonium compound and aluminum chloride hexahydrate, dissolving in an alcohol solution, and stirring for 30 minutes to prepare a solution A; weighing prescribed sodium bentonite, and adding into the solution A to prepare a semi-dry reaction material B; putting the reaction material B in microwave reactor, and performing a radiation heating reaction for a period; and washing the heated product, drying at 105 DEG C, grinding the dried product, and filtering through a 100-mesh screen. The compound bentonite can be applied to removal of ammonia nitrogen, phosphor and algae in a water body.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method and application of microwave-synthesized inorganic-organic composite bentonite. Background technique [0002] my country's bentonite is rich in resources and widely distributed. It is widely used in construction, medical treatment, agriculture and other fields. It is known as "universal soil". In recent decades, a large number of studies have found that after the modification of bentonite, its application in water restoration has obvious effects. Inorganic-organic composite bentonite is a type of modified bentonite, and researchers have studied the preparation and application of this type of modified bentonite. [0003] When the inorganic modifier uses AlCl 3 , when the organic modifier adopts cetyltrimethylammonium (CTMAB), the prepared modified soil has a good effect on PO 4 3- The removal rate is about 90%. However, the inorganic-organic compo...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/28B01J20/30C02F1/28C02F1/58C02F101/16C02F101/10
Inventor 聂锦旭谢伟楠陈仕稳王志红刘立凡
Owner GUANGDONG UNIV OF TECH
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