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Mesoporous sweet potato residue adsorbing material and preparation method thereof

A technology of adsorption material and sweet potato residue, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of waste of adsorption materials, low utilization rate, and inability to improve the adsorption performance as a whole, so as to improve the utilization rate and reduce the treatment cost , Thorough adsorption effect

Inactive Publication Date: 2015-09-30
北京知淘科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: In view of the prior art, the surface properties of the substance can only be changed by means of microbial growth, and the adsorption effect can be improved, but the internal structure of the substance cannot be changed, resulting in waste of adsorption materials, low utilization rate, and poor adsorption performance. The shortcomings of the overall improvement provide a mesoporous sweet potato residue adsorption material and its preparation method. This method not only changes the surface properties of sweet potato residue, but also changes its internal structure, thereby improving its adsorption performance and making the adsorption more thorough. , at the same time, the adsorption material can be fully utilized, which improves the utilization rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] First, extract 200g of sweet potato residue after extracting sweet potato, add 900ml of anhydrous ethanol solution containing 20% ​​urea and soak for 1.0h, then add 4g magnesium nitrate and 6g ferric nitrate to the above mixture, and stir at room temperature for 0.5~1.0h. Wait for it to stand for 20 minutes, filter it, and dry the filter residue under natural ventilation; then cover the dried sweet potato residue mixture with pig manure and keep the temperature at 60°C for anaerobic fermentation for 12 days; The sweet potato residue after oxygen fermentation is moldy in a dark, humid and ventilated place. The moldy time is 15 days. During the moldy period, it is wetted with absolute ethanol every 20 minutes. When the mold bud grows 0.8μm, use the quality The score is 2.0% H 2 O 2 The solution is sterilized, and after sterilization, it is repeatedly roasted on the stove, then rapidly cooled and freeze-dried to obtain the mesoporous sweet potato residue adsorption material....

example 2

[0024] First, extract 150g of sweet potato residue after extracting sweet potato, add 600ml of anhydrous ethanol solution containing 15% urea and soak for 0.5h, then add 3g magnesium nitrate and 6g ferric nitrate to the above mixture, stir at room temperature for 0.5h, wait for it Let it stand for 30 minutes, filter it, and dry the filter residue under natural ventilation; then cover the dried sweet potato residue mixture with pig manure and keep the temperature at 50°C for anaerobic fermentation for 12 days; then anaerobic fermentation Place the latter sweet potato residue in a dark, damp, and ventilated place to become moldy. The moldy time is 15 days. During the moldy period, wet it with absolute ethanol every 20 minutes. When the mold bud grows 0.5μm, use a mass fraction of 1.5%H 2 O 2 The solution is sterilized, and after sterilization, it is repeatedly roasted on the stove, then rapidly cooled and freeze-dried to obtain the mesoporous sweet potato residue adsorption materi...

example 3

[0027] First, extract 170g of sweet potato residue after extracting sweet potato, add 800ml of absolute ethanol solution containing 16% urea and soak for 0.5h, then add 3g magnesium nitrate and 6g ferric nitrate to the above mixture, stir at room temperature for 0.5h, wait for it Let it stand for 30 minutes, filter it, and dry the filter residue under natural ventilation; then cover the dried sweet potato residue mixture with pig manure and keep the temperature at 60°C for anaerobic fermentation for 11 days; then anaerobic fermentation After the sweet potato residue is placed in a dark, humid, ventilated place, moldy, moldy time is 13 days, during the moldy period, wetting it with absolute ethanol every 20 minutes, when the mold bud grows 0.8μm, use the mass fraction of 2.0%H 2 O 2 The solution is sterilized, and after sterilization, it is repeatedly roasted on the stove, then rapidly cooled and freeze-dried to obtain the mesoporous sweet potato residue adsorption material.

[00...

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Abstract

The invention relates to an adsorbing material and a preparation method thereof, in particular to a mesoporous sweet potato residue adsorbing material and a preparation method thereof. The preparation method comprises the following steps: at first, adding sweet potato residue in an ethanol solution containing urea for soaking, adding magnesium nitrate and ferric nitrate, stirring at room temperature, filtering, and airing the filter residue under the natural ventilation condition; next, covering the aired sweet potato residue mixture with pig manure, conducting anaerobic fermentation, placing sweet potato residue in a dark, wet and ventilated place for mildewing, wetting the sweet potato residue with absolute ethyl alcohol every 20 min in the mildewing period, and when mildew buds grows by 0.5-0.8 [mu]m, sterilizing with an H2O2 solution, finally, repeatedly roasting on a stove, quickly cooking, and conducting freeze drying to obtain the mesoporous sweet potato residue adsorbing material. The surface performance of sweet potato residue is changed, and the interior structure of sweet potato residue is changed, so that the adsorbing performance is improved, and the adsorption rate is as high as 99.99%; moreover, the adsorbing material can be utilized thoroughly, so that the utilization rate is improved, the treatment cost is low, and the environment is protected.

Description

Technical field [0001] The invention relates to an adsorption material and a preparation method thereof, in particular to a mesoporous sweet potato residue adsorption material and a preparation method thereof. Background technique [0002] Sweet potato dregs are by-products of other foods. At present, some factories have a lack of processing methods for a large amount of sweet potato dregs. One is to directly landfill it, which not only takes up the field, but also rots and smells, polluting the environment. The other method is It is washed and used as a raw material for feed, but the raw material for feed is not only low in nutrients, but also expensive in processing. At the same time, some are even directly fed to animals or discarded, which will cause environmental pollution and waste of resources. [0003] At present, the discharge of a large amount of waste water has severely destroyed the environment and endangered human health. Therefore, there are many modification methods ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
Inventor 郭迎庆薛红娟
Owner 北京知淘科技有限责任公司