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Preparation method of phosphoric acid activated eucalyptus charcoal adsorbent and application thereof in adsorbing Cr (VI) in water

A phosphoric acid activation, biochar technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve problems such as harming human health, polluting soil, animals and plants, etc.

Inactive Publication Date: 2021-04-09
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the sewage and wastewater discharged from the factory is not treated effectively and safely, some organic pollutants and heavy metals will be discharged into the water body, which will pollute other water bodies, soil, animals and plants along the material circulation line, and even endanger human health

Method used

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  • Preparation method of phosphoric acid activated eucalyptus charcoal adsorbent and application thereof in adsorbing Cr (VI) in water
  • Preparation method of phosphoric acid activated eucalyptus charcoal adsorbent and application thereof in adsorbing Cr (VI) in water
  • Preparation method of phosphoric acid activated eucalyptus charcoal adsorbent and application thereof in adsorbing Cr (VI) in water

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Experimental program
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Embodiment

[0020] (1) The eucalyptus was sawed into small pieces, cut into thin slices (40mm×15mm×2mm), washed three times, baked in an oven at 80°C for 48 hours, crushed and passed through a 30-mesh sieve to obtain eucalyptus powder.

[0021] (2) Place the eucalyptus powder obtained in step (1) in a muffle furnace, heat up to 500° C. for 1 hour at a heating rate of 10° C. / min, and pyrolyze it for 1 hour, wash it with deionized water three times, and place it in an oven at 60° C. for 24 hours. The obtained eucalyptus charcoal is packed in a plastic sealed bag.

[0022] (3) Soak 10g of eucalyptus charcoal from the above step (2) in 40mL of 40% phosphoric acid solution, soak for 10h at room temperature, place the soaked eucalyptus charcoal in a 200mL crucible, and place it in a 500°C muffle furnace for pyrolysis for 1h , the heating rate was 10°C / min, and the obtained eucalyptus biochar was washed three times with deionized water, and dried in a 60°C oven for 24 hours. The dried eucalyptus...

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Abstract

The invention relates to a preparation method of phosphoric acid activated eucalyptus charcoal and application thereof in adsorbing Cr (VI) in water. The preparation method includes: cutting the dried eucalyptus into slices, soaking and washing the slices for three times, drying the slices in a drying oven at the temperature of 60-80 DEG C for 48 hours, crushing the slices, and sieving the crushed slices with a 30-mesh sieve to obtain eucalyptus powder; and putting the obtained eucalyptus powder into a muffle furnace, heating to 500 DEG C at a heating rate of 10 DEG C / min, pyrolyzing for 1 hour, washing with deionized water for three times, and drying in a drying oven at 60 DEG C for 24 hours to obtain the eucalyptus charcoal. soaking 8-10 g of eucalyptus charcoal in 40-50 mL of a 40% phosphoric acid solution for 10 h at the room temperature, placing the soaked eucalyptus charcoal in a 200 ml crucible, and performing pyrolysis in a muffle furnace at 450-550 DEG C for 1 h at the heating rate of 10 DEG C / min, washing the eucalyptus activated charcoal for three times in deionized water, and drying the eucalyptus activated charcoal at 55-60 DEG C for 24 h, and packaging the driedeucalyptus activated charcoal in plastic sealed bags and perserving the eucalyptus activated charcoal in a drying condition. The method disclosed by the invention is simple, common in medicament, easily available in raw materials and available in actual running operation. Based on the local eucalyptus in Guangxi, the raw material cost is saved.

Description

technical field [0001] The present invention relates to the preparation method of phosphoric acid-activated eucalyptus biochar to adsorb Cr(VI) in water and its application. The preparation method of phosphoric acid-activated eucalyptus biochar adsorbent and its effect on Cr(VI) in water have been studied by using the local eucalyptus resources abundant in Guilin, Guangxi. ) Adsorption application. The invention belongs to the technical field of resource utilization and water treatment. Background technique [0002] With the development of urbanization in our country, nine industries and eight industries are booming, especially various factories have sprung up, such as tannery, mining, electrical factory, leather factory, electroplating factory and so on. The development of industry undoubtedly brings economic benefits to the people, but at the same time causes environmental problems. If the sewage and wastewater discharged from the factory is not treated effectively and s...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/22
CPCB01J20/20C02F1/283B01J2220/4825C02F2101/22
Inventor 张华卢泽张康曾惠婷石清亮
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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