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Method for preparing cellulose based dye waste water purification material with waste newspaper

A technology for dye wastewater and purification materials, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc. problems, to achieve the effect of being conducive to environmental protection, simplifying the treatment process, and achieving ideal results

Inactive Publication Date: 2013-07-24
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low recycling rate of existing waste paper, low adsorption efficiency and unprominent treatment effect of dye wastewater purification materials, and provide a method for preparing cellulose-based dye wastewater purification materials by using waste newspapers

Method used

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  • Method for preparing cellulose based dye waste water purification material with waste newspaper
  • Method for preparing cellulose based dye waste water purification material with waste newspaper
  • Method for preparing cellulose based dye waste water purification material with waste newspaper

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specific Embodiment approach 1

[0022] Specific implementation mode 1: The method for preparing cellulose-based dye wastewater purification materials by using waste newspapers in this embodiment is implemented in the following steps:

[0023] 1. Put 150g of waste newspaper and 3~6g of Na 2 Si 3 ·9H 2 O, 1.5~4.5g of H 2 O 2 , 1.5~4.5g of NaOH and 3~6g of surfactant are mixed, and then stirred at 65℃ for 1h to obtain the deinked cellulose, which is then washed with distilled water for 6-8 times, and then dried by blowing Dry in a box at 100°C to obtain waste newspaper fibers, which are then crushed and screened out to 80-120 mesh waste newspaper fibers;

[0024] 2. Take 5g of 80-120 mesh waste newspaper fiber, add 125mL of 20% NaOH solution in a 250mL three-necked flask, stir at room temperature for 1h, filter out 62.5mL of NaOH solution, and then add 40mL of epichlorohydrin. Stir at a speed of 180r / min at 65°C for 6 hours, filter the water out of the obtained cellulose with a 400-mesh gauze, and wash it with anhyd...

specific Embodiment approach 2

[0031] Specific embodiment two: This embodiment is different from specific embodiment one in that in step one, 150g of waste newspaper and 4g of Na 2 Si 3 ·9H 2 O, 3g of H 2 O 2 , 3g of NaOH and 4g of surfactant are mixed. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Specific embodiment three: this embodiment is different from specific embodiment one or two in that in step one, 100 mesh waste newspaper fibers are sieved. Other steps and parameters are the same as those in the first or second embodiment.

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Abstract

The invention relates to a method for preparing a cellulose based dye waste water purification material with waste newspaper, which solves the problems that in the prior art, the existing waste newspaper recycle rate is low, the absorption efficiency of the dye waste water purification material is low, and the process effect of the purification material is not prominent. The method comprises the following steps: mixing and stirring the waste newspaper, Na2Si3 9H2O, H2O2, NaOH and a surfactant to obtain deinked cellulose; washing, drying, crushing and screening the cellulose to obtain waste newspaper fiber; adding a NaOH solution into the waste newspaper fiber, stirring the mixture and filtering out half of the NaOH solution, adding epoxy chloropropane into the remain solution, stirring the solution, filtering out the water, and cleaning the fiber; adding tetramethyl ethylene diamine into the fiber, stirring and filtering the mixture, and cleaning the fiber; adding methyl carbonate into the fiber, stirring and filtering the mixture, and finally cleaning and drying the fiber. The waste newspaper is changed into an environment-friendly cellulose adsorbent which is conducive to environmental protection; the anionic dye solution adsorption efficiency is high, the adsorption capacity is also high, and the absorption effect is obvious.

Description

Technical field [0001] The invention relates to a method for preparing a cellulose-based dye wastewater purification material. Background technique [0002] my country is the world’s largest importer and consumer of waste paper, but the domestic waste paper recycling rate is only about 38%, which is still lower than the world average of 47.7% and the level of about 70% in developed countries. There is still a huge amount of waste paper recycling. Development potential. [0003] Dyes have a large number of applications in different fields. However, improper treatment of dye wastewater will bring serious harm to the environment and the development of human society. The water quality of printing and dyeing wastewater is complex, deep in color, high in organic content, and low in biodegradability. It is difficult for a single treatment method to meet the discharge requirements. At present, many domestic and foreign researches on dye wastewater treatment methods are mainly divided into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58
Inventor 王立娟齐越
Owner NORTHEAST FORESTRY UNIVERSITY
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