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Sewage treatment material prepared from waste leather shavings and its preparation method and use

A technology for sewage treatment and leather scraps, applied in the field of leather chemicals and functional materials, can solve problems such as environmental pollution, and achieve the effects of reducing environmental pollution, saving resources, and enhancing the adsorption capacity of heavy metals

Inactive Publication Date: 2019-05-24
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a sewage treatment material prepared by using waste leather shavings and its preparation method and application, to obtain a sewage treatment material for absorbing heavy metals prepared by using waste leather shavings, which not only solves the problem of effective treatment of heavy metals in industrial sewage Technical problems, but also solve the technical problems of environmental pollution caused by waste leather shavings buried or incinerated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In step (1), 30 parts by weight of water, 50 parts by weight of waste leather scraps, 20 parts by weight of acrylic acid monomers, 3 parts by weight of concentrated sulfuric acid and 0.2 parts by weight of Pingjiao are added to the reactor, at 40 ° C And after reacting for 1 h under the condition of stirring, add 0.5 parts by weight of isopropanol while stirring;

[0027] In step (2), after adding 0.5 parts by weight of isopropanol, the temperature was raised to 75° C., and the reaction was carried out for 3 hours;

[0028] Step (3), then slowly add 0.04 parts by weight of sodium persulfate dropwise, and complete the dropwise addition within 2 to 3 hours, then raise the temperature to 85°C, and react for 1h; then lower the temperature to 40°C, and then use 5mol / L The pH value of the sodium hydroxide solution is adjusted so that the pH value is 6.5, and the filtered product is dried to obtain the sewage treatment material.

[0029] Determination of Fe in sewage treatmen...

Embodiment 2

[0034] Step (1), the sodium dodecylbenzenesulfonate of the water of 35 parts by weight, the waste leather shavings of 50 parts by weight, the methacrylic acid monomer of 15 parts by weight, the vitriol oil of 5 parts by weight and 0.4 parts by weight are added Into the reaction kettle, after reacting for 2 hours at 40°C with stirring, add 0.5 parts by weight of glycerol while stirring;

[0035] In step (2), after adding 0.5 parts by weight of glycerol, the temperature is raised to 75° C., and the reaction is carried out for 3 hours;

[0036] Step (3), then slowly add 0.03 parts by weight of ammonium persulfate dropwise, and complete the dropwise addition within 2 to 3 hours, then heat up to 85°C, and react for 0.5h; then lower the temperature to 40°C, and then use 5mol / The pH value of L sodium hydroxide solution is adjusted so that the pH value is 7.5, and the filtered product is dried to obtain the sewage treatment material.

[0037] Determination of Fe in sewage treatment ...

Embodiment 3

[0042] Step (1), the water of 40 parts by weight, the waste leather shavings of 50 parts by weight, the methyl acrylate monomer of 10 parts by weight, the vitriol oil of 2 parts by weight and the flat add of 0.3 parts by weight are added in the reactor, in After reacting for 2 hours at 50°C with stirring, add 0.8 parts by weight of glycerol while stirring;

[0043] In step (2), after adding 0.8 parts by weight of glycerol, the temperature was raised to 70° C., and the reaction was carried out for 3 hours;

[0044] Step (3), then slowly add 0.05 parts by weight of potassium persulfate dropwise, and complete the dropwise addition within 2 to 3 hours, then heat up to 90°C, and react for 0.5h; then lower the temperature to 40°C, and then use 5mol / The pH value of L sodium hydroxide solution is adjusted so that the pH value is 7.0, and the filtered product is dried to obtain the sewage treatment material.

[0045] Determination of Fe in sewage treatment materials 2+ 、Cr 3+ 、Se ...

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Abstract

The invention discloses a method of utilizing a waste leather scrap to prepare a sewage treatment material. The method comprises the following steps: step (1), adding 30-40 parts of water, 50 parts of the waste leather scrap, 10-20 parts of an acrylic acid monomer, 2-5 parts of concentrated sulfuric acid and 0.2-0.5 part of an emulsifying agent by weight to a reaction still, taking a reaction under a stirring condition at 40-50 DEG C for 1-2 hours, and adding 0.5-1 part of a molecular regulating agent while stirring; step (2), raising the temperature to 70-75 DEG C, and taking the reaction for 2-3 hours; step (3), slowly dripping 0.02-0.05 part of an initiator within 2-3 hours, then raising the temperature to 85-90 DEG C, taking the reaction for 0.5-1 hour, cooling to 40 DEG C, utilizing 5 mol / L of a sodium hydroxide solution to regulate the pH value to be 6.5-7.5, and then drying the filtered product to obtain the sewage treatment material. The invention further discloses the sewage treatment material and application thereof.

Description

technical field [0001] The invention belongs to the field of leather chemicals and functional materials, and in particular relates to a sewage treatment material prepared from waste leather shavings, a preparation method and application thereof. Background technique [0002] In the 21st century, with the improvement of people's living standards, leather products have become a part of people's daily life. In 2012 alone, my country's leather industry completed a total industrial output value of 1,055.6 billion yuan, with exports reaching 76.09 billion U.S. dollars and a total profit of 68.052 billion yuan, my country has become a world-recognized leather production and trade power. [0003] However, because the discharge of sewage containing heavy metals in the tanning process has brought great harm to the environment and human health (hexavalent chromium is identified as a strong carcinogen by the World Health Organization), the effective treatment of sewage containing heavy m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00B01J20/26C02F1/28C02F101/20
Inventor 琚海燕李伟彭俊军吕少仿
Owner WUHAN TEXTILE UNIV
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