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Preparation method of multi-functional group antibacterial biogas residue adsorbent for adsorbing heavy metals and anions

A technology for adsorbing heavy metals and anions, which is applied in chemical instruments and methods, alkali metal compounds, adsorbed water/sewage treatment, etc. It can solve the problem of single removal of heavy metals or anions by adsorbents, and achieve increased reactive sites and good antibacterial properties. , the effect of improving mechanical strength and wear resistance

Inactive Publication Date: 2018-06-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the implementation of numerous adsorbent applications, the current adsorbent only removes heavy metals or anions, and there is no public report on an adsorbent that can remove heavy metals and anions at the same time and also has antibacterial properties.

Method used

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  • Preparation method of multi-functional group antibacterial biogas residue adsorbent for adsorbing heavy metals and anions
  • Preparation method of multi-functional group antibacterial biogas residue adsorbent for adsorbing heavy metals and anions
  • Preparation method of multi-functional group antibacterial biogas residue adsorbent for adsorbing heavy metals and anions

Examples

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Embodiment 1

[0037] A preparation method of an antibacterial biogas residue adsorbent with multifunctional functional groups for adsorbing heavy metals and anions, comprising the following steps:

[0038] Stir and react corn stalk residue with epichlorohydrin and N,N-dimethylformamide (DMF), add crosslinking agent ethylenediamine, and then add triethylamine solution, the ratio of ingredients between them is corn Straw biogas residue: epichlorohydrin: ethylenediamine: triethylamine solution = 2g: 5mL: 1mL: 5mL, and a corn biogas residue-based multifunctional antibacterial biogas adsorbent was prepared. The product is represented by No.1. The specific preparation method is as follows:

[0039] (1) Take 2g of corn stalk residue with a particle size of 300-500μm in a 250mL three-necked flask, add 5mL of epichlorohydrin, stir and add 5mL of N,N-dimethylformamide as the reaction medium, and put it at 80°C Under stirring reaction 30min;

[0040](2) Take 1 mL of the cross-linking agent ethylene...

Embodiment 2

[0044] A preparation method of corn biogas residue-based multifunctional antibacterial biogas residue adsorbent, comprising the following steps:

[0045] Stir and react corn stalk residue with N,N-dimethylformamide (DMF) and epichlorohydrin, add crosslinking agent diethylenetriamine, and then add triethylamine solution. The ratio of ingredients between them is Biogas residue: epichlorohydrin: diethylenetriamine: triethylamine solution = 2g: 5mL: 2mL: 5mL, and a corn biogas residue-based multifunctional antibacterial biogas adsorbent was prepared. The product is represented by No.2. The specific preparation method is as follows:

[0046] (1) Take 2g of corn stalk residue with a particle size of 300-500μm in a 250mL three-necked flask, add 5mL of epichlorohydrin, stir and add 5mL of N,N-dimethylformamide as the reaction medium, and put it at 90°C Under stirring reaction 30min;

[0047] (2) Add 2 mL of cross-linking agent diethylenetriamine into the above-mentioned 250 mL thre...

Embodiment 3

[0051] A preparation method of sorghum biogas residue-based multifunctional antibacterial biogas residue adsorbent, comprising the following steps:

[0052] Stir the sorghum straw biogas residue with N,N-dimethylformamide and epichlorohydrin, add the crosslinking agent ethylenediamine, and then add the triethylamine solution. The ratio of ingredients between them is biogas residue: ring Oxychloropropane: ethylenediamine: triethylamine solution = 2g: 10mL: 4mL: 10mL, so that sorghum biogas residue-based multifunctional antibacterial biogas residue adsorbent was prepared. The product is represented by No.3.

[0053] The specific preparation method is as in Example 1, except that the biogas residue is selected from sorghum straw, 10 mL of epichlorohydrin, 10 mL of N,N-dimethylformamide, 4 mL of ethylenediamine, and 4 mL of triethylene The volume of amine was 10 mL, and the reaction temperature was 75 °C. The obtained sorghum biogas residue-based high-efficiency anion adsorption...

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Abstract

The invention relates to a preparation method of a multi-functional group antibacterial biogas residue adsorbent for adsorbing heavy metals and anions. The method comprises that with a biogas residueproduced by crop straw fuel formation and epoxy chloropropane as main raw materials, with ethylenediamine, triethylamine, hexamethylenediamine, diethylenetriamine, triethylene tetramine, or diethylaminopropylamine as cross-linking agents, the adsorbent is prepared in the presence of an N,N-dimethyl formamide medium; the prepared novel multi-functional group antibacterial biogas residue-based adsorbent has the advantages of simple production process, low cost, easy modification, large mechanical strength, wide use range, good adsorption effect, strong antibacterial property, low secondary pollution, large adsorption capacity, high adsorbing capacity specially for copper ions, nickel ions, nitrate radicals, phosphate radicals, dichromate radicals and anion dye ions, even attachment of chemical functional groups, large specific surface area and strong adhesion power. The adsorbent can be widely applied in all kinds of polluted water bodies containing various heavy metal ions and anions, such as industrial wastewater, eutrophic water bodies, chromium-containing wastewater, printing and dyeing wastewater or other polluted water bodies.

Description

technical field [0001] The invention relates to a preparation method of an antibacterial biogas residue adsorbent with multiple functional groups that absorbs heavy metals and anions, and belongs to the technical fields of waste resource utilization, environment and chemistry. Background technique [0002] As a large agricultural country, according to statistics, crop straw accounts for about 52.85% of available biomass resources in my country, and livestock and poultry manure accounts for about 20.22%, which makes crop straw become the main force of my country's biomass resources. In response to the urgent demand for the development and utilization of biomass energy at home and abroad, some enterprises and projects use biomass straw as raw material to produce biomass gas through anaerobic fermentation technology, and replace petroleum fuel with purified biogas, which greatly reduces the consumption of non-renewable energy. Consumption is conducive to alleviating my country's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/24B01J20/28016B01J2220/4825B01J2220/4837C02F1/286C02F2101/20
Inventor 高宝玉宋雯潘静文张元成于萌萌
Owner SHANDONG UNIV
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