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Preparation method of shaddock peel based waste biomass macromolecule adsorbing material

A technology of waste biomass and adsorption materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of high cost and poor effect, and achieve the effect of low cost, good adsorption effect and simple preparation process

Inactive Publication Date: 2016-09-21
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon materials can be prepared with pomelo peel as a precursor, and can be used as an ammonia nitrogen adsorbent (CN 103521182A); Foo et al. .) Using pomelo peel as a precursor and NaOH as an activator, the pomelo peel activated carbon prepared by microwave irradiation can reach a maximum adsorption capacity of 500 mg / g when methylene blue is adsorbed, but the cost is too high
Generally speaking, although there are methods and technologies for reusing pomelo peel, the effect is not very good or the cost is high

Method used

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  • Preparation method of shaddock peel based waste biomass macromolecule adsorbing material
  • Preparation method of shaddock peel based waste biomass macromolecule adsorbing material
  • Preparation method of shaddock peel based waste biomass macromolecule adsorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Pretreatment of pomelo peel: cut the pomelo peel into small pieces, soak in water for 5-60 minutes, drain the water, dry at 40-60℃, and crush to 80-150 mesh to obtain pomelo peel powder.

[0028] Preparation of adsorption material: add 2.0 g of pomelo peel powder to 15 mL of distilled water, stir and disperse for 15 min to obtain a dispersion of pomelo peel powder; dissolve 1 g of methacrylic acid in 10 mL of sodium hydroxide aqueous solution (which contains sodium hydroxide 0.5 g), and added to the pomelo peel powder dispersion, then add 0.02 g of the cross-linking agent N,N'-methylene bisacrylamide, stir and disperse for 2 h, heat up to 60°C; add 0.04 g of potassium persulfate, Under the protection of nitrogen, the reaction was stirred for 1 h, the temperature was raised to 70°C, 0.1 g potassium persulfate was added again, the reaction was stirred for 2 h, filtered, the product was washed 3 to 5 times, and then dried at 60°C for 5 to 8 h, ground, A 100-mesh sieve was use...

Embodiment 2

[0031] Pretreatment of pomelo peel: same as Example 1;

[0032] Preparation of adsorption material: add 1.5 g of pomelo peel powder to 15 mL of distilled water, stir for 15 min to obtain a dispersion of pomelo peel powder; dissolve 1.0 g of methacrylic acid in 10 mL of sodium hydroxide aqueous solution (wherein, containing 0.4 g) and added to the pomelo peel powder dispersion, then add 0.02 g of crosslinking agent N,N'-methylene bisacrylamide, stir and disperse for 2 h; increase the temperature to 60°C, add 0.03 g of potassium persulfate, Under the protection of nitrogen, the reaction was stirred for 1 h; the temperature was raised to 70°C, then 0.05 g potassium persulfate was added, the reaction was stirred for 2 h, filtered, and the resulting product was washed with water 3-5 times, and then dried at 60°C for 5-8 h, and ground , Pass a 100-mesh sieve to obtain the pomelo peel-based waste biomass polymer adsorption material.

[0033] When the initial concentration of methylene bl...

Embodiment 3

[0035] Pretreatment of pomelo peel: same as Example 1;

[0036] Preparation of adsorption material: Add 3.0 g of pomelo peel powder to 15 mL of distilled water and stir for 15 min to obtain a dispersion of pomelo peel powder; dissolve 2 g of methacrylic acid in 15 mL of sodium hydroxide aqueous solution (wherein, containing 0.85 sodium hydroxide g) and added to the pomelo peel powder dispersion, then add 0.04 g of cross-linking agent epoxy resin, stir and disperse for 2 h; increase the temperature to 60°C, add 0.06 g of ammonium persulfate, and stir for 1 h under the protection of nitrogen After that, the temperature was raised to 75°C, 0.12 g of ammonium persulfate was added, the reaction was stirred for 2 h, filtered, and the resulting product was washed with water 3~5 times, then dried at 50°C for 5~8 h, ground, and passed through a 100 mesh sieve to obtain Pico-based biomass polymer adsorption material.

[0037] When the initial concentration of methylene blue solution is 100 ...

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Abstract

The invention discloses a method taking waste shaddock peel as a raw material to prepare a shaddock peel based waste biomass macromolecule adsorbing material through macromolecule modification. The method comprises the following steps: shaddock peel powder is dispersed in water, and shaddock peel powder dispersion liquid is obtained; a functional monomer containing a carboxyl functional group is dissolved in an NaOH aqueous solution and is added into the shaddock peel powder dispersion liquid, a cross-linking agent is added then and stirring is performed for 0.5-2 h; the temperature is raised to 50-60 DEG C, an initiating agent is added, stirring is performed under the protection of inert gas, and reaction is carried out for 0.5-1 h; the temperature is continuously raised to 65-75 DEG C, the initiating agent is added again, stirring is continuously performed for reaction lasting for 1-3 h, and after the reaction is completed, filtration, washing, drying and grinding are performed, and the shaddock peel based waste biomass macromolecule adsorbing material is obtained. The results of adsorptive property tests shows that the shaddock peel based waste biomass macromolecule adsorbing material has a very strong adsorptive property for dye methylene blue, the adsorption rate is high, and the material can be suitable for adsorption in different environments. In addition, the preparation process of the method is simple, the cost is low, and the industrial production is facilitated.

Description

Technical field [0001] The invention relates to the preparation of a biomass polymer adsorption material, in particular to a method for preparing waste pomelo peel-based waste biomass polymer adsorption material through polymer modification by using waste pomelo peel as a raw material, which is mainly used in dye wastewater The adsorption of cationic dyes such as methylene blue belongs to the field of polymer materials and water treatment. Background technique [0002] Pomelo peel (referred to as pomelo peel) as a kind of agricultural and sideline product, apart from its edible value, it is rarely used industrially or extract the effective ingredients in pomelo peel. However, pomelo peel has the advantages of high yield and biocompatibility, and it is a renewable biomass material. If it is simply processed or modified, it is expected to produce cheap and valuable new polymer materials. In recent years, there have been reports of reuse of pomelo peel as an adsorbent, such as: Ham...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/26
CPCB01J20/267B01J2220/4812B01J2220/4825
Inventor 王荣民刘亮何玉凤钱文珍王斌郝玲霞
Owner NORTHWEST NORMAL UNIVERSITY
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