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Method of using ammonium oxalate to prepare biosorbent for treating salt-based block green dye wastewater

A biosorbent, salt-based block green technology, applied in water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as poor removal effect and secondary pollution, and achieve economic circular development and protection. effects of the environment

Active Publication Date: 2021-04-16
YUNCHENG UNIVERISTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of poor removal effect and easy to produce secondary pollution in the existing treatment of base block green printing and dyeing wastewater, and to provide a method of using ammonium oxalate to prepare a biosorbent for treating base block green dye wastewater

Method used

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  • Method of using ammonium oxalate to prepare biosorbent for treating salt-based block green dye wastewater
  • Method of using ammonium oxalate to prepare biosorbent for treating salt-based block green dye wastewater
  • Method of using ammonium oxalate to prepare biosorbent for treating salt-based block green dye wastewater

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] A method of using ammonium oxalate to prepare a biosorbent for treating salt-based block green dye wastewater in this embodiment, the specific steps are as follows:

[0026] 1) Washing: Collect waste orange peels from food factories as materials and rinse them clean;

[0027] 2) Drying: place the washed orange peel in a constant temperature drying oven at 60°C and 6.67×102Pa to dry to constant weight;

[0028] 3) Cutting: Cut the dried orange peel into 3-5cm long pieces;

[0029] 4) Cooking: Put the orange peel pieces in boiling water at 100°C and boil for 40 minutes;

[0030] 5) Soaking in ammonium oxalate: cool the cooked orange peel to room temperature, soak in ammonium oxalate solution with a concentration of 1%, and place in a constant temperature water bath at 25°C for 50 minutes;

[0031] 6) Alkali soaking: soak the washed orange peel pieces in a sodium hydroxide solution with a pH of 12 for 50 minutes;

[0032] 7) Hydrogen peroxide soaking: Rinse fully with d...

Embodiment 2

[0047] A method of using ammonium oxalate to prepare a biosorbent for treating salt-based block green dye wastewater in this embodiment, the specific steps are as follows:

[0048] 1) Washing: Collect waste orange peels from food factories as materials and rinse them clean;

[0049] 2) Drying: place the washed orange peel in a constant temperature drying oven at 70°C and 6.67×102Pa to dry to constant weight;

[0050] 3) Cutting: Cut the dried orange peel into 3-5cm long pieces;

[0051] 4) Cooking: put the orange peel pieces in boiling water at 100°C and boil for 60 minutes;

[0052] 5) Soaking in ammonium oxalate: cool the cooked orange peels to room temperature, soak them in ammonium oxalate solution with a concentration of 2.5%, and place them in a constant temperature water bath at 20°C for 60 minutes;

[0053] 6) Alkali soaking: soak the washed orange peel pieces in a sodium hydroxide solution with a pH of 13 for 20 minutes;

[0054]7) Hydrogen peroxide soaking: fully ...

Embodiment 3

[0087] A method of using ammonium oxalate to prepare a biosorbent for treating salt-based block green dye wastewater in this embodiment, the specific steps are as follows:

[0088] 1) Washing: Collect waste orange peels from food factories as materials and rinse them clean;

[0089] 2) Drying: place the washed orange peel in a constant temperature drying oven at 65°C and 6.67×102Pa to dry to constant weight;

[0090] 3) Cutting: Cut the dried orange peel into 3-5cm long pieces;

[0091] 4) Cooking: Put the orange peel pieces in boiling water at 100°C and boil for 50 minutes;

[0092] 5) Soaking in ammonium oxalate: cool the cooked orange peels to room temperature, soak them in a 0.5% ammonium oxalate solution, and place them in a constant temperature water bath at 60°C for 20 minutes;

[0093] 6) Alkaline soaking: soak the washed orange peel pieces in a sodium hydroxide solution with a pH of 11 for 60 minutes;

[0094] 7) Hydrogen peroxide soaking: fully rinse with distille...

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Abstract

The invention relates to a method of using ammonium oxalate to prepare a biosorbent for treating salt-based block green dye wastewater, which belongs to an environment-friendly production method of the original ecological green biosorbent. The purpose of the invention is to solve the technical problem that the existing treatment of salt-based block green printing and dyeing wastewater has poor removal effect and easily produces secondary pollution. The technical scheme of the present invention is: a kind of method that uses ammonium oxalate to prepare and process the biosorbent of salt-based block green dye wastewater, and its specific steps are as follows: 1) washing; 2) drying; 3) shearing; 4) cooking; 5) Ammonium oxalate soaking; 6) alkali soaking; 7) hydrogen peroxide soaking; 8) alcohol soaking; 9) cleaning filter residue; 10) drying; 11) crushing. The invention has the advantages of reuse of waste resources, good adsorption effect, no secondary pollution and the like.

Description

technical field [0001] The invention relates to a method of using ammonium oxalate to prepare a biosorbent for treating salt-based block green dye wastewater, which belongs to an environment-friendly production method of the original ecological green biosorbent. Background technique [0002] The printing and dyeing industry has a long history in our country, and it also occupies a pivotal position in human life. It is an important pillar industry of the national economy. While the rapid development of the printing and dyeing industry has brought convenience to our lives, it has also brought a lot of troubles, the first of which is the harm caused by the discharge of printing and dyeing wastewater to the environment and human health. Salt-based block green is a common cationic dye in printing and dyeing wastewater. It is often used as a coloring agent for ceramics, textiles, leather, food and cytochemical dyeing. Its chemical functional group triphenylmethane has high toxici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
CPCB01J20/24C02F1/286C02F2101/308
Inventor 李新陈莉
Owner YUNCHENG UNIVERISTY
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