Modified macadamia shell adsorbent

A nut shell and adsorbent technology, which is applied in the field of biomass modified adsorbent materials, can solve the problems that have not been reported, and achieve the effects of no waste discharge, low cost and simple preparation process

Inactive Publication Date: 2015-07-29
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It can be seen that there are many studies on biomass materials as raw materials for the production of adsorbents, and there are many studies on macadamia nut shells as raw materials for the production of adsorbents; The research on the adsorbent of the treated matter has not been reported yet

Method used

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Embodiment 1

[0036] As shown in Table 1, the adsorption capacity of the adsorbent obtained by the preparation method of the present invention for reactive brilliant red dye is obviously better in an acidic environment, and can reach 240-250mg / g;

[0037] The specific preparation method thereof is: a preparation method of a modified macadamia nut shell adsorbent, the steps of which include:

[0038] (1) Wash the macadamia nut shells, put them in a pulverizer, pulverize them, and then sieve them to obtain macadamia nut shell powder;

[0039] (2) The macadamia nut shell powder and tartaric acid obtained in step (1) are calculated as 1g powder, and 2g tartaric acid is added to mix, and the sulfuric acid of 1ml and the deionized water of 20ml are added thereto, and then after it is stirred evenly, use Boil at a temperature of 50°C for 120 minutes, then cool it down to normal temperature, and wash the boiled macadamia nut shell powder with deionized water until the pH value of the macadamia nut ...

Embodiment 2

[0049] A method for preparing a modified macadamia nut shell adsorbent, the steps comprising:

[0050] (1) Wash the macadamia nut shells, put them in a pulverizer, pulverize them, and then sieve them to obtain macadamia nut shell powder;

[0051] (2) The macadamia nut shell powder obtained in step (1) and tartaric acid are calculated as 1g powder, and 3g tartaric acid is added to mix, and the sulfuric acid of 3ml and the deionized water of 30ml are added thereto, and after it is stirred evenly, use Boil at 70°C for 200 minutes, then cool it down to normal temperature, and wash the boiled macadamia nut shell powder with deionized water until the pH value of the macadamia nut shell powder is neutral. Put it in a baking oven and dry it at a temperature of 105°C;

[0052] (3) Put the dried powder obtained in step (2) and 20ml of ammonia water, and place it at a temperature of 70°C for constant temperature stirring for 30 minutes, then place it in a condensing reflux device for co...

Embodiment 3

[0061] A method for preparing a modified macadamia nut shell adsorbent, the steps comprising:

[0062] (1) Wash the macadamia nut shells, put them in a pulverizer, pulverize them, and then sieve them to obtain macadamia nut shell powder;

[0063] (2) Add 2.5 g of tartaric acid to the macadamia nut shell powder obtained in step (1) and tartaric acid as 1 g of powder, mix, and add 2 ml of sulfuric acid and 25 ml of deionized water to it, and then stir it evenly, Boil at a temperature of 60°C for 170 minutes, then cool it down to normal temperature, and wash the boiled macadamia nut shell powder with deionized water until the pH value of the macadamia nut shell powder is neutral. Put it into a baking oven and dry it at a temperature of 85°C;

[0064] (3) Add the dried powder obtained in step (2) and 15ml of ammonia water, and place it at a temperature of 60°C for constant temperature stirring for 25 minutes, and then place it in a condensing reflux device for condensing and refl...

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Abstract

The invention relates to the technical field of biomass modified adsorbent materials, in particular to a method for preparing a modified macadamia shell adsorbent. The method includes the following steps: after being subjected to basic treatments, namely cleaning, smashing and sieving, macadamia shells are subjected to acidizing treatment; the acidized macadamia shell powder is cleaned to neutral and then subjected to ammonium hydroxide; the product obtained in the previous step is then dried and ground to form an adsorbent, so that the capacity of the adsorbent for adsorbing reactive brilliant red reaches 240-250 mg/g in an acidic condition, the capacity of the adsorbent for adsorbing cationic dyes reaches 200 mg/g, and the capacity of the adsorbent for adsorbing methylene blue reaches 400 mg/g. The modified macadamia shell adsorbent provided by the invention has the advantages of being good in chemical stability, high in mechanical strength and easier in regeneration.

Description

technical field [0001] The invention relates to the technical field of biomass modified adsorbent materials, in particular to a method for preparing a modified macadamia nut shell adsorbent. Background technique [0002] With the rapid development of modern industry, the discharge of printing and dyeing wastewater from textile factories, printing factories, paint factories and other factories has increased year by year, causing serious impact on environmental pollution, which has aroused widespread concern. Printing and dyeing wastewater has the characteristics of deep color, complex composition, high content of organic pollutants and large changes in water quality. When it is randomly discharged into the water body, it not only affects the appearance and smell of the natural water body, but also affects the growth and reproduction of animals and plants in the water, thereby destroying the ecological balance and affecting human health and living environment. At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 陈兵王晓朋李鹏飞
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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