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Modified charcoal adsorption material as well as preparation method and application thereof in removing Pb<2+> in water

An adsorption material and biomass material technology, applied in the field of modified biochar adsorption material and its preparation, can solve problems such as being unfavorable to scale-up production, cumbersome preparation process, etc., achieve easy popularization, industrialized production, and good environmental compatibility , the effect of short production cycle

Inactive Publication Date: 2019-01-18
ECOLOGY INST SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process of this method is relatively cumbersome, and equipment such as an ultrasonic instrument and a high-pressure reactor are used, which is not conducive to large-scale production
In addition, although there are many studies on the preparation of adsorbent materials, few of the prepared adsorbent materials have been applied to Pb in water. 2+ research on the removal of

Method used

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  • Modified charcoal adsorption material as well as preparation method and application thereof in removing Pb&lt;2+&gt; in water
  • Modified charcoal adsorption material as well as preparation method and application thereof in removing Pb&lt;2+&gt; in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]Add 30g of crushed and sieved reed straw to 100ml of 2M FeCl 3 The solution was stirred at room temperature for 2h. After filtration, aging at 80°C for 2h.

[0050] Then put it into a crucible, put it in a nitrogen atmosphere furnace at 5°C / min, raise it to 500°C, and keep it at a constant temperature for 2h. Grind and pass through a 100-mesh sieve to obtain magnetic biochar, marked as MC.

[0051] Finally, take 1 g and add it into 100 ml of 2% acetic acid solution in which 0.6 chitosan is dissolved, adjust the pH to 10 after stirring for 1 h, stir at room temperature for 16 h, filter, wash, dry, and then pulverize through a 100-mesh sieve, marked as CMC.

[0052] Then take 1.0g and 0.8g EDTA in 50ml deionized water, stir at 60°C for 4h, then cool down to 40°C, add 5ml1M sodium hydroxide solution and 0.96g EDAC respectively, continue stirring for 1h, stand at room temperature for 16h, filter, wash and dry After crushing and passing through a 100-mesh sieve to obtain t...

Embodiment 2

[0055] As described in Example 1, the difference is that corncobs are used as raw materials, and the final modified chitosan magnetic biochar is marked as CCMC-1.

Embodiment 3

[0057] As described in Example 1, the difference is that cotton stalks are used as raw materials, and the final modified chitosan magnetic biochar is marked as CCMC-2.

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Abstract

The invention relates to a modified charcoal adsorption material as well as a preparation method and application thereof in removing Pb<2+> in water. The adsorption material is prepared by adopting agricultural and forestry solid wastes as raw materials to be immersed, magnetized and pyrolyzed in an oxygen limiting manner and covered with chitosan which is chemically modified. The adsorption material has high capacity for removing Pb<2+> in water. By adopting the method, the agricultural and forestry solid wastes can be recycled, a purpose of treating pollution by using waste can be achieved,and the difficulty in recycling and removing a conventional adsorption material after being used can be overcome. The modified charcoal adsorption material is rich in source, simple and feasible in preparation process, significant in effect on removing the Pb<2+> in water, free from secondary pollution, relatively low in preparation and adsorption cost, and good in application value.

Description

technical field [0001] The invention relates to the field of resource utilization of agricultural solid wastes to prepare water treatment adsorption materials, in particular to a modified biochar adsorption material and its preparation method and its ability to treat Pb in water bodies. 2+ removal method. Background technique [0002] As a large agricultural country, with the rapid development of agricultural intensification in my country, a large amount of agricultural solid waste is produced. According to incomplete statistics, there are more than 750 million tons of various crop straws every year. Due to the large changes in the current rural planting structure and energy structure, a large amount of agricultural waste is disposed of or incinerated, which not only causes a waste of resources, but also causes environmental pollution. [0003] With the continuous advancement of the industrialization process, the discharge of industrial wastewater in my country is also inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/48C02F101/20
CPCB01J20/20C02F1/281C02F1/48C02F2101/20
Inventor 郑立稳高永超黄玉杰张闻季蕾傅晓文陈贯虹王加宁
Owner ECOLOGY INST SHANDONG ACAD OF SCI