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Preparation method and application of modified locust tree leaf charcoal

A technology of biochar and pagoda tree leaves, applied in chemical instruments and methods, water pollutants, and other chemical processes, can solve the problems of high cost, secondary pollution of the environment, and high requirements for production equipment, and achieve low cost, avoid pollution, The effect of improving adsorption performance

Pending Publication Date: 2020-10-02
浙江豪宇生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology involves making better ways to improve biomass material' ability to absorb substances from contaminants like dirt on surfaces such as roads. By adding certain active ingredients called Zinc Chloride into these sources, they become even stronger due to their high affinity towards various compounds found naturally occurring in soil environments. These treated biodes have increased activity compared to pure bacterial cell walls which are less effective than other methods. Additionally, modifying this type of charcoal allows its properties to be changed without affecting any others involved. Overall, this new process provides technical benefits over existing technologies while reducing costs associated therewith.

Problems solved by technology

This patented technical problem addressed in this patent relates to finding ways to effectively remove or reduce unwanted substances like bisphenoquinone (BP) into safe waters without causing negative effects on fish populations due to its presence in these environments.

Method used

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  • Preparation method and application of modified locust tree leaf charcoal
  • Preparation method and application of modified locust tree leaf charcoal
  • Preparation method and application of modified locust tree leaf charcoal

Examples

Experimental program
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Embodiment 1

[0030] A preparation method of modified locust tree leaf biochar, comprising the following steps:

[0031] (1) Take locust tree leaves as raw material, wash them with tap water and dry them, place the dried locust tree leaves in a pulverizer to fully crush them, pass the crushed materials through a 50-mesh sieve, put the sieved locust tree leaves in chlorine Immerse in zinc chloride solution for 24 hours, filter and dry, then transfer the dried pagoda tree leaves to a vacuum furnace, raise the temperature to 450°C at 10°C / min under an inert atmosphere, and keep at 450°C for 3h to carbonize the material. After carbonization, cool down to room temperature naturally, then pass through NaOH solution and reversely spray the material in the vacuum furnace, let it stand for 0.5h, filter, and dry to obtain the initial activated biochar;

[0032] (2) Place the initially activated biochar in a vacuum furnace and reactivate it under an inert atmosphere at 500°C for 1 hour, cool to room t...

Embodiment 2

[0036] The modified locust tree leaf biochar was prepared according to the preparation method of Example 1 and used to adsorb bisphenol A, an organic pollutant in polluted water sources, except that the carbonization temperature in step (1) was 650°C.

Embodiment 3

[0038] The modified pagoda tree leaf biochar was prepared according to the preparation method of Example 1 and used to adsorb bisphenol A, an organic pollutant in polluted water sources, except that the carbonization temperature in step (1) was 850°C.

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Abstract

The invention discloses a preparation method and application of modified locust tree leaf charcoal. The preparation method comprises the following steps of: (1) putting locust tree leaves in a zinc chloride solution for dipping for 24 hours, filtering, drying, carbonizing and activating in an inert atmosphere, then introducing a NaOH solution for reverse spraying, and standing to obtain primarilyactivated charcoal; (2) activating, cooling and washing the primarily activated biochar again in an inert atmosphere to obtain activated charcoal; and (3) adding the activated charcoal into a citric acid solution, esterifying under microwaves, then adding beta-cyclodextrin and distilled water, continuously reacting, cooling, washing and drying to obtain the modified sophora tree leaf charcoal. Thepreparation method disclosed by the invention is low in cost, wide in raw material source, mild in reaction condition, simple to operate and free of special requirements on equipment, and the obtained product can be used for efficiently removing the organic pollutant bisphenol A in the water body and has the advantages of being wide in applicable water body pH range, resistant to ion interferenceand the like.

Description

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Claims

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Application Information

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Owner 浙江豪宇生态科技有限公司
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