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Novel adsorbent

An adsorbent, a new type of technology, applied in other chemical processes, chemical instruments and methods, etc., to achieve the effect of reducing wastewater treatment problems, high economic value, improving hydrophobicity and the ability to adsorb organic matter

Inactive Publication Date: 2015-11-18
CHANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there have been no reports on the preparation of new adsorbents with better hydrophobicity and superior adsorption performance

Method used

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Examples

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Effect test

Embodiment 1

[0017] (1) Take an appropriate amount of rice husk and wash away impurities such as sludge with distilled water, then place it in a vacuum atmosphere sintering furnace at 120°C for 12 hours, then mix the dried rice husk with an appropriate amount of HCl solution with a concentration of 1mol / L and put it in In the flask, reflux and condense in a constant temperature oil bath and boil with constant stirring for 3 hours, remove most impurities and filter, wash the filter residue with distilled water until neutral and dry at 120°C for 12 hours, then place the dried rice husk in a vacuum atmosphere Pyrolysis at 500°C for 5 hours in a sintering furnace to prepare rice husk charcoal.

[0018] (2) the rice husk charcoal 30g after above-mentioned pretreatment and the Na that mass concentration is 15% 2 CO 3 The solution was mixed into a flask with a mass ratio of 0.3:1, the flask was placed in a constant temperature oil bath and boiled for 5 hours, then the suspension was filtered, th...

Embodiment 2

[0021] (1) Take an appropriate amount of rice husk and wash away impurities such as sludge with distilled water, then place it in a vacuum atmosphere sintering furnace at 120°C for 12 hours, then mix the dried rice husk with an appropriate amount of HCl solution with a concentration of 1mol / L and put it in In the flask, reflux and condense in a constant temperature oil bath and boil with constant stirring for 3 hours, remove most impurities and filter, wash the filter residue with distilled water until neutral and dry at 120°C for 12 hours, then place the dried rice husk in a vacuum atmosphere Pyrolysis at 500°C for 5 hours in a sintering furnace to prepare rice husk charcoal.

[0022] (2) the rice husk charcoal 30g after above-mentioned pretreatment and the Na that mass concentration is 15% 2 CO 3 The solution was mixed into a flask with a mass ratio of 0.3:1, the flask was placed in a constant temperature oil bath and boiled for 5 hours, then the suspension was filtered, th...

Embodiment 3

[0026] (1) Take an appropriate amount of rice husk and wash away impurities such as sludge with distilled water, then place it in a vacuum atmosphere sintering furnace at 120°C for 12 hours, then mix the dried rice husk with an appropriate amount of HCl solution with a concentration of 1mol / L and put it in In the flask, reflux and condense in a constant temperature oil bath and boil with constant stirring for 3 hours, remove most impurities and filter, wash the filter residue with distilled water until neutral and dry at 120°C for 12 hours, then place the dried rice husk in a vacuum atmosphere Pyrolysis at 500°C for 5 hours in a sintering furnace to prepare rice husk charcoal.

[0027] (2) the rice husk charcoal 30g after above-mentioned pretreatment and the Na that mass concentration is 15% 2 CO 3 The solution was mixed into a flask with a mass ratio of 0.3:1, the flask was placed in a constant temperature oil bath and boiled for 5 hours, then the suspension was filtered, th...

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Abstract

The invention relates to a preparation method of a novel adsorbent. Firstly, rice husks are subjected to pretreatment including impurity removal, pyrolysis and acid pickling, then rice husk charcoal is treated with a Na2CO3 solution with a certain concentration under a certain condition, desiliconized rice husk charcoal is prepared and treated with vapor with a certain temperature, the treated modified desiliconized rice husk charcoal is subjected to esterification modification with succinic anhydride as an esterifying agent, dioxane as a solvent and triethylamine as a catalyst, and the novel adsorbent with a good hydrophobic effect and adsorption performance is prepared.

Description

technical field [0001] The invention belongs to the field of new material preparation, and in particular relates to a preparation method of a novel adsorbent. Background technique [0002] Rice husk and rice straw are by-products of rice production and are relatively common agricultural waste. Rice husks and rice straws are usually treated by burning, discarding or using them as low calorific value fuels. This practice not only wastes resources, but also causes certain pollution to the environment and leads to soil mineralization. Rice husk and rice straw are very good sources of carbon. The carbonized rice husk and rice straw activated carbon has the advantages of high specific surface area, large adsorption capacity, and good adsorption effect. In recent years, the comprehensive utilization of rice husk and rice straw Research is also getting more and more attention. However, because they are rich in hydroxyl groups and show strong hydrophilicity, it is difficult to meet...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30
Inventor 黄维秋王翊红吕爱华卞静谭小兵
Owner CHANGZHOU UNIV
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