Preparation method for three-dimensional network structure flocculation material structured by bacterial cellulose

A bacterial cellulose, three-dimensional network technology, applied in the field of environmental engineering, to achieve the effect of expanding the scope of application, wide sources of materials, and important economic and social environmental benefits

Inactive Publication Date: 2017-03-22
JIAXING SAIWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no related technology that uses bacterial cellulose as a raw material to produce carboxyl cellulose through chemical modification to further synthesize three-dimensional network structure flocculation materials.

Method used

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  • Preparation method for three-dimensional network structure flocculation material structured by bacterial cellulose
  • Preparation method for three-dimensional network structure flocculation material structured by bacterial cellulose
  • Preparation method for three-dimensional network structure flocculation material structured by bacterial cellulose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Add the bacterial cellulose material produced by Sarcina to the mixed solution of 8wt% sodium hydroxide and 10wt% urea at a mass ratio of 15:1 between the mixed solution of sodium hydroxide and urea and the mixed solution of bacterial cellulose material, and place it after fully stirring- Freeze at 10°C for 80 minutes, take out to obtain bacterial cellulose solution;

[0023] 2) Stir the bacterial cellulose solution obtained in step 1) at 35°C under light-shielding conditions at a mass ratio of sodium periodate to cellulose material of 0.2:1, add sodium periodate to oxidize for 110 minutes, and then The mass ratio of alcohol and bacterial cellulose material is 2:1, adding ethylene glycol and reacting for 60 minutes to remove residual sodium periodate; removing the shading device and stirring and reacting for 6 hours at room temperature to obtain carboxycellulose solution;

[0024] 3) Centrifuge the carboxycellulose solution obtained from the reaction in step 2), wash...

Embodiment 2

[0026] 1) The bacterial cellulose material produced by rhizobia is added to the mixed solution of 8wt% sodium hydroxide and 10wt% urea according to the mass ratio of sodium hydroxide and urea mixed solution to bacterial cellulose material 20:1, fully stirred and placed -10 Freeze at ℃ for 70 minutes, take out to obtain bacterial cellulose solution;

[0027] 2) Stir the bacterial cellulose solution obtained in step 1) at 40°C under light-shielding conditions at a mass ratio of sodium periodate to cellulose material of 0.1:1, add sodium periodate to oxidize for 90 minutes, and then press ethylene di The mass ratio of alcohol and bacterial cellulose material is 1:1, adding ethylene glycol and reacting for 30 minutes to remove residual sodium periodate; removing the shading device and stirring and reacting at room temperature for 7 hours to obtain carboxycellulose solution;

[0028] 3) Centrifuge the carboxycellulose solution obtained from the reaction in step 2), wash until neutr...

Embodiment 3

[0030] 1) Add the bacterial cellulose material produced by Sarcina to the mixed solution of 8wt% sodium hydroxide and 10wt% urea at a mass ratio of 18:1 between the mixed solution of sodium hydroxide and urea and the mixed solution of bacterial cellulose material, and place it after fully stirring- Freeze at 10°C for 65 minutes, take out to obtain bacterial cellulose solution;

[0031] 2) Stir the bacterial cellulose solution obtained in step 1) at 40°C under light-shielding conditions at a mass ratio of sodium periodate to bacterial cellulose material of 0.18:1 and add sodium periodate to oxidize it for 105 minutes, then press B The mass ratio of diol to cellulose material is 1.5:1, adding ethylene glycol and reacting for 70 minutes to remove residual sodium periodate; removing the shading device and stirring and reacting for 7 hours at room temperature to obtain carboxycellulose solution;

[0032] 3) Centrifuge the carboxycellulose solution obtained from the reaction in step...

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Abstract

The invention discloses a preparation method for a three-dimensional network structure flocculation material structured by bacterial cellulose. The preparation method comprises the steps that a bacterial cellulose material is dissolved and is modified after sodium periodate and ethylene glycol are added, and carboxyl cellulose is generated; then the three-dimensional network structure flocculation material is obtained after processing and drying; and then the three-dimensional network structure flocculation material is added into waste water to conduct a flocculation application experiment. The preparation method has the advantages that operation is easy, material sources are extensive and cost is low, and the application range is wide. According to the preparation method, the bacterial cellulose is used as a raw material of the flocculation material, so that the bio-degradable material is fully utilized and secondary pollution to the environment is reduced; and meanwhile, material-dependence on oil resources is reduced greatly. The prepared three-dimensional network structure flocculation material can be applied to waste water treatment such as industrial waste water and domestic waste water treatment, and has important economy and social environment benefits.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, in particular to the field of preparation methods of cellulose flocculants, in particular to a preparation method of a three-dimensional network structure flocculation material constructed by bacterial cellulose. Background technique [0002] Currently, methods for treating wastewater include physical-chemical and biochemical methods. Among them, physical and chemical methods are mainly to remove suspended solids, colloidal particles, colors and toxic compounds in wastewater, mainly including flotation and coagulation. The coagulation method is to add chemicals to the pre-filtered wastewater to cause the organic impurities to coagulate. This method is simple to operate, low in cost and high in treatment efficiency. [0003] According to different sources and properties, flocculants mainly include inorganic, organic synthesis, natural organic polymers and microorganisms. Inorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08L1/04C08B15/04C02F1/56
CPCC08J9/28C02F1/56C02F2209/11C08B15/04C08J2301/04
Inventor 张勇杨梦梦潘莲君施旭晓林正钏
Owner JIAXING SAIWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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