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Preparation method and application of cornus wilsoniana oil cake adsorbent

An adsorbent, the technology of light bark, which is applied in adsorption water/sewage treatment, chemical instruments and methods, textile industry wastewater treatment, etc., can solve the problems of harmful substances, polydregs, and low nutrition

Inactive Publication Date: 2012-07-04
HUNAN ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a small amount of oil cake can be used as feed or fertilizer, its low nutrition, dregs, and harmful substances limit its application.

Method used

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  • Preparation method and application of cornus wilsoniana oil cake adsorbent
  • Preparation method and application of cornus wilsoniana oil cake adsorbent
  • Preparation method and application of cornus wilsoniana oil cake adsorbent

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] 1. Test material

[0013] Photobark oil cake: After air-drying the fruits collected in 2009, the fruit of photobark tree was squeezed out with a KOMET cold press, and the remaining solid by-product was photoberry oil cake.

[0014] Dye: Commercial dye 2BLN was purchased from Tianjin Chemical Company. Molecular formula is C 14 h 9 N 2 o 4 Br has a molecular weight of 349.14 g / mol, and its structural formula is shown in Figure 1.

[0015]

[0016] Figure 1: Chemical structure of the dye 2BLN

[0017] 2. Preparation of eucalyptus oil cake adsorbent

[0018] Put 30g of eucalyptus oil cake into a 1L beaker, add 300mL of petroleum ether, stir with a stirrer for 10min, and let stand for 5h to degrease. Then filter the oil cake and place it in a G90T23ASP-2B Galanz microwave oven (800W) to heat for 3 minutes. The oil cake was dried in an oven at 105°C, and then passed through an 80-mesh sieve, and the obtained sample was the glabra oil cake adsorbent.

[0019] 3. De...

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Abstract

A preparation method of a cornus wilsoniana oil cake adsorbent comprises adding petroleum ether into a beaker where a cornus wilsoniana oil is placed, stirring the petroleum ether through a stirrer, standing and degreasing; filtering the oil cake, and placing the oil cake into a microwave oven for heating; and drying the oil cake through a dryer, and screening the oil cake through a screen with 80 meshes to obtain a sample, namely the cornus wilsoniana oil cake adsorbent. Surface functional groups of the cornus wilsoniana oil cake adsorbent are mainly acidity functional groups which comprise phenolic hydroxyl, a carbonyl group and lactone and few alkaline functional groups. Potential of hydrogen (pH) point of zero charge (pzc) of the cornus wilsoniana oil cake adsorbent is 5.4. A large amount of -OH and highly conjugation C=O exist on the surface of the cornus wilsoniana oil cake adsorbent. According to test of dye removal by utilizing the cornus wilsoniana oil cake adsorbent, colority removal rate and chemical oxygen demand removal rate of the cornus wilsoniana oil cake adsorbent on 2 billion (BLN) dye solution are respectively 96% and 91% so that the fact illustrates that the cornus wilsoniana oil cake adsorbent has strong capacity for removing dye molecules. Therefore, the cornus wilsoniana oil cake adsorbent can be applied to wastewater treatment.

Description

technical field [0001] The invention relates to a preparation method of glabra oil cake adsorbent and its application in the treatment of printing and dyeing wastewater. Background technique [0002] Printing and dyeing wastewater comes from many industries, such as textile, leather, paper, cosmetics, food and other industries. Printing and dyeing wastewater contains a large number of harmful dye molecules. If it is not properly treated and discharged directly, it will cause serious pollution to the environment and threaten human health. However, printing and dyeing wastewater is difficult to treat, because the chemical structure of many dye molecules is very stable, resistant to oxidation or aerobic digestion. Estimates show that more than 7×10 5 t dyes, and 2% of them are directly discharged into natural water bodies. In view of the high toxicity of dyes and their wide application, a lot of researches on the removal of dye molecules in printing and dyeing wastewater hav...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F103/30
Inventor 张良波李昌珠李培旺张爱华朱海亮付杰何祯祥
Owner HUNAN ACAD OF FORESTRY
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