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A kind of heavy metal adsorption material prepared by biological conversion of bagasse and its application

A technology for adsorbing heavy metals and adsorption materials, which is applied to the adsorption of heavy metal materials prepared by biological conversion of bagasse and its application field, can solve environmental pollution and other problems, achieve the effect of increasing capacity, increasing looseness, and improving adsorption capacity

Active Publication Date: 2020-06-02
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a heavy metal adsorption material prepared by biologically converting bagasse and its preparation and application, wherein the key biological conversion process for bagasse, especially the biological method The type of microorganisms used in the conversion process is improved. Compared with the prior art, it can effectively solve the problem that the acid, alkali and other reagents used in the preparation of heavy metal adsorption materials from bagasse materials are likely to cause environmental pollution. The present invention can convert Form a loose bagasse structure in the bagasse, or expose the bagasse surface, or increase the ability of the bagasse surface to adsorb heavy metal groups, so that the transformed bagasse can be used as a strong heavy metal adsorption material (that is, bagasse strongly adsorbs heavy metal materials) and is applied to the adsorption of heavy metal ions and the present invention can further ensure the heavy metal adsorption effect by optimizing the fermentation time etc. used in the biological conversion process, the feed ratio and adsorption time used in the adsorption treatment process

Method used

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  • A kind of heavy metal adsorption material prepared by biological conversion of bagasse and its application
  • A kind of heavy metal adsorption material prepared by biological conversion of bagasse and its application
  • A kind of heavy metal adsorption material prepared by biological conversion of bagasse and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0029]Microorganisms: Bacillus pumilus and Pectinobacillus carotovora. Among them, Pectinobacillus carotovora soft rot HG-49 refers to the strain preserved in China Center for Type Culture Collection, and the preservation number is CCTCC NO: M2017016.

[0030] Bagasse: Purchasing bagasse from Guangxi sugar mill, crushing to 80 mesh to make bagasse powder, drying at 60°C to constant weight for later use.

[0031] Fermentation medium formula: 5g bagasse powder, 43mL double distilled water, 0.5g (NH 4 ) 2 SO 4 , 0.5g soybean cake powder, made into 0.2g / L K 2 HPO 4 , dubbed Mg of 0.1g / L 2 SO 4 (Follow-up experiments need to be inoculated with 7.5mL bacterial solution, so the mass concentration is calculated as 50mL volume).

[0032] Heavy metal ion solution: This experiment uses heavy metal ion Pb 2+ The ion adsorption performance identification test of the fermented bagasse finished product is carried out in aqueous solution; it is made into 100mg / L Pb 2+ The ion solutio...

Embodiment 2

[0037] Example 2 Effects of Different Fermentation Time on Bagasse Adsorption of Heavy Metals

[0038] Take 1.0g of bagasse at different fermentation times, and the heavy metal ion in the adsorption experiment is Hg 2+ , the adsorption treatment time was 30min; the effect of bagasse adsorption under different fermentation time conditions was studied, and the results are shown in Table 1.

[0039] Table 1 Bagasse adsorption under different fermentation time conditions

[0040]

[0041] The bacteria used in the experiment are Bacillus pumilus and Pectinobacillus carotovora HG-49. HG-49 can degrade gum, expose cellulose, hemicellulose and lignin, and increase the adsorption activity groups of metal ions. , Bacillus pumilus can degrade bagasse hemicellulose, thereby increasing the surface gap and pore structure of bagasse, and greatly increasing the adsorption activity of metal ions. Can also find out from table 1, the time of preferred fermentation is 12~24h; More preferably...

Embodiment 3

[0042] Example 3 Effects of different solid-liquid ratios on bagasse adsorption of heavy metals

[0043] Take different quality fermented bagasse (fermented for 24h), put into 50ml containing Ni 2+ in solution. The adsorption time was 30 minutes; the effect of bagasse adsorption under different bagasse dosage conditions was studied, and the results are shown in Table 2.

[0044] Bagasse adsorption under different quality conditions of table 2 bagasse

[0045]

[0046] It can be concluded from Table 2 that there is a saturation phenomenon when different amounts of bagasse adsorbents adsorb a specific concentration of metal ion solution, that is, after a certain amount of adsorbent is exceeded, the total amount of metal ions in the adsorbed solution does not change much, that is to say, there is Optimal dosage of bagasse adsorbent. Therefore, the adsorption effect is better when the solid-liquid ratio ranges from 0.5:1g / L to 1:1g / L. Too little bagasse will not have a high ...

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Abstract

The invention discloses a heavy metal adsorbing material prepared by biotransformation of bagasse and application of the heavy metal adsorbing material. The heavy metal adsorbing material formed by the biotransformation of the bagasse is prepared by microbial transformation of bagasse; microorganisms are used for transforming the bagasse, and enabling the bagasse to have a loose structure, exposea bagasse-adsorbed heavy metal group or add a bagasse surface-adsorbed heavy metal group. By improving a key biological transformation process of the bagasse, in particular to the types of microorganisms adopted by the biological transformation process, compared with the prior art, the biological transformation process disclosed by the invention has the advantage that reagents such as acid and alkali used for preparing the heavy metal adsorbing material from bagasse materials easily causes environmental pollution can be effectively solved; by the microbial transformation, a loose bagasse structure can be formed in the bagasse, or the surface of the bagasse is exposed and the capability of the bagasse surface to adsorb heavy metal groups is improved; the transformed bagasse can be used as astrong heavy metal adsorbing material and is applied to heavy metal ion adsorption.

Description

technical field [0001] The invention belongs to the technical field of microbial application and heavy metal ion adsorption treatment, and more specifically, relates to a strong adsorption heavy metal material prepared by efficiently transforming bagasse by a biological method and its preparation and application. The heavy metal adsorption material is prepared by efficiently transforming bagasse by a biological method The resultant has a strong adsorption effect on heavy metal ions. Background technique [0002] With the development of industry in recent years, a large amount of heavy metal ions are discharged into the soil and water bodies such as rivers, lakes and oceans, endangering the soil and aquatic ecological environment. Heavy metals in the environment cannot be degraded, and mainly enter animals and plants through air, water, soil, etc., and enter the human body through food chain amplification and enrichment. Very low concentrations of metal ions can disrupt the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62C02F101/20
CPCB01J20/24B01J2220/4825B01J2220/4875C02F1/286C02F2101/20
Inventor 余龙江白云杨再旺余天意付春华付芳语
Owner HUAZHONG UNIV OF SCI & TECH
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