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Preparation of copper complexing natural polymer adsorbing material

A natural polymer and adsorption material technology, applied in the field of environmental nano-polymer materials, can solve the problems of refractory organic pollution, water pollution, etc., and achieve the effect of large adsorption capacity

Inactive Publication Date: 2008-10-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of sewage discharge leads to water pollution, especially serious pollution of refractory organic matter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In a 1000ml iodine bottle, 60g of copper sulfate heptahydrate was dissolved in 700ml of ammonia with a mass concentration of 5% to prepare a cuproammonia solution. Dissolve 3.5g of cellulose in cuproammonia solution to prepare a cuproammonia solution containing cellulose with a mass concentration of 0.5%, then add 7g of lignin into the solution, stir and shake at a constant temperature of 20°C for 48h, filter the product, and use Washed twice with distilled water, filtered and dried, dried at 50°C, ground, and passed through a 100-mesh sieve to obtain a copper-complexed natural polymer adsorption material. The adsorption capacity of the material for naphthol in water is greater than 1.6g / g, and the adsorption capacity for phenanthrene in waste water is greater than 30mg / g.

Embodiment 2

[0018] In a 1000ml iodine bottle, 220g of copper carbonate was dissolved in 700ml of ammonia with a mass concentration of 20% to prepare a cuproammonia solution. Dissolve 14g of cellulose in cuproammonia solution to prepare a cuproammonia solution containing cellulose with a mass concentration of 2%, then add 140g of lignin to the solution, stir and shake at 80°C for 6 hours, filter the product, and wash with distilled water Wash twice, filter and dry, dry at 105°C, grind, and pass through a 100-mesh sieve to obtain a copper-complexed natural polymer adsorption material. The adsorption capacity of the material for naphthol in water is greater than 1.5g / g, and the adsorption capacity for phenanthrene in waste water is greater than 25mg / g.

Embodiment 3

[0020] In a 1000ml iodine bottle, 330g of copper carbonate was dissolved in 700ml of ammonia with a mass concentration of 30% to prepare a cuproammonia solution. Dissolve 14g of cellulose in cuproammonia solution to prepare a cuproammonia solution containing cellulose with a mass concentration of 2%, then add 50g of lignin to the solution, stir and shake at a constant temperature of 80°C for 6h, filter the product, and wash with distilled water Wash twice, filter and dry, dry at 105°C, grind, and pass through a 100-mesh sieve to obtain a copper-complexed natural polymer adsorption material. The adsorption capacity of the material for naphthol in water is greater than 1.5g / g, and the adsorption capacity for phenanthrene in waste water is greater than 25mg / g.

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Abstract

The invention discloses a method for preparing copper complex natural polymer adsorption material, which consists of the following steps: 1) cupric salt is dissolved into ammonia water to prepare cuprammonium solution; 2) fibrin is dissolved into the cuprammonium solution and then is added with lignin; 3) the mixture is stirred for 6-48 hours at the constant temperature of 20-80 DEG C for centrifugal filtration and then washed twice to three times with distilled water; 4) filtrated solid product is dried at the temperature of 50-105 DEG C; 5) dried activation product is grinded and passes 100 mesh sieve to acquire the copper complex natural polymer adsorption material. The copper complex natural polymer adsorption material prepared by the invention has strong adsorption capacity of organic contamination in water and large adsorption capacity and can be popularized and used in the treatment of difficult degradable organic waste water and the adsorption and fixation treatment for sudden discharging of large quantity of organic liquid, at the same time natural polymer waste materials such as the lignin, the fibrin, etc. produced in the process of paper making, etc. can be recycled.

Description

technical field [0001] The invention belongs to the field of environmental nanometer polymer materials, and relates to a preparation method of copper complexed natural polymer adsorption materials. Background technique [0002] With the deepening of human understanding of environmental pollution and resource crisis, the renewable, degradable and non-toxic properties of natural polymers have been paid more and more attention. The recycling of waste and the utilization of renewable resources are major issues in contemporary economic and social development, and are also new requirements for contemporary science and technology. In nature, the reserve of lignin is second only to cellulose, and it is regenerated at a rate of 50 billion tons every year. The pulp and paper industry separates about 140 million tons of cellulose from plants every year, and at the same time obtains about 50 million tons of lignin by-products, but so far, more than 95% of lignin is still directly disch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28
Inventor 杨坤邬文浩景青锋
Owner ZHEJIANG UNIV
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