Efficient adsorbent based on ginkgo leaves and preparation method thereof

An adsorbent and ginkgo leaf technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve environmental impact and other problems, and achieve high efficiency, low energy consumption, and simple and easy-to-operate preparation process

Inactive Publication Date: 2017-06-30
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In autumn and winter, a large amount of fallen leaves will be produced to form urban waste. If not handled properly, it will have a serious impact on the environment.

Method used

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  • Efficient adsorbent based on ginkgo leaves and preparation method thereof
  • Efficient adsorbent based on ginkgo leaves and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Ginkgo biloba is crushed into powder in a high-speed pulverizer, crosses a 100-mesh standard mesh sieve, and selects the leaf powder in the 100-mesh size range for subsequent use;

[0021] (2) Ginkgo biloba powder is repeatedly washed until the lotion is clarified with deionized water;

[0022] (3) Soak the powder obtained in step (2) with a mixed solution of sodium carbonate and sodium bicarbonate with a mass fraction of 3%, and stir and keep it warm at 60° C. at 30 rpm for 1 hour;

[0023] (4) The powder obtained in step (3) is repeatedly washed several times with 1% dilute hydrochloric acid sulfuric acid mixed acid;

[0024] (5) Wash the powder washed with 1% dilute hydrochloric acid and sulfuric acid mixed acid solution in step (4) to neutrality with deionized water;

[0025] (6) Put the powder washed in step (5) into an oven, and dry at 60°C for 12 hours;

[0026] Adsorption performance evaluation was carried out at room temperature: 0.02 g of adsorbent was a...

Embodiment 2

[0028] (1) Ginkgo biloba is crushed into powder in a high-speed pulverizer, crosses a 40 mesh standard mesh sieve, and selects the leaf powder of the 40 mesh size range for subsequent use;

[0029] (2) Ginkgo biloba powder is repeatedly washed until the lotion is clarified with deionized water;

[0030] (3) Soak the powder obtained in step (2) with a mixed solution of sodium hydroxide and potassium hydroxide with a mass fraction of 5%, and stir and keep it warm at 70° C. at 25 rpm for 3 hours;

[0031] (4) The powder obtained in step (3) is repeatedly washed several times with 2% dilute sulfuric acid;

[0032] (5) The powder washed with 2% dilute sulfuric acid in step (4) is washed to neutrality with deionized water;

[0033] (6) Put the powder washed in step (5) into an oven, and dry at 50°C for 24 hours;

[0034] Adsorption performance evaluation was carried out at room temperature: 0.02 g of adsorbent was added to 20 mL of basic fuchsin (BF) solutions with initial concent...

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Abstract

The invention discloses an efficient adsorbent based on ginkgo leaves and a preparation method thereof. The adsorbent is a product obtained by using the ginkgo leaves as a raw material, crushing, washing with water, washing with an alkali, washing with an acid, again washing with water and drying. The adsorbent has excellent adsorption effects on methylene blue (MB), basic fuchsin (BF), rhodamine B (RhB) and other a plurality of dyes, has a high adsorption rate, and can be used for the adsorption of organic dye pollutants in sewage. Compared with the prior art, the adsorbent uses the agricultural and forestry waste ginkgo leaves as the raw material, the product can be obtained by a simple and easy process, the object of treating waste with the waste can be realized, and the efficient adsorbent has the advantages of greenness, environmental-friendliness, low energy consumption, high efficiency, and the like, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to the technical field of dye sewage treatment, in particular to preparing an efficient dye adsorbent by using agricultural and forestry waste. Background technique [0002] Adsorbent is a kind of solid substance that can make active ingredients adhere to its surface, so that liquid or solid trace compounds in liquid or gas phase become solid on its surface. It is a solid substance that adsorbs some of the ingredients in gas or solid. At present, commonly used adsorbents are alumina, activated carbon, silica gel, etc. Such adsorbents have problems such as high manufacturing cost and high energy consumption. How to prepare adsorbents with excellent performance at low cost is one of the hotspots in the field of pollutant treatment. Ginkgo biloba is a large deciduous tree widely distributed in my country. In autumn and winter, a large amount of fallen leaves will be produced to form urban waste, which will have a serious impact on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/22C02F1/28C02F101/36C02F101/38
CPCB01J20/22B01J2220/485C02F1/286C02F2101/308C02F2101/36C02F2101/38C02F2101/40
Inventor 谢娟王虎刘畅唐鋆磊王莹莹
Owner SOUTHWEST PETROLEUM UNIV
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