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Amino-functionalized polystyrene material and application thereof in adsorption of methyl orange

A technology of amino functionalization and polystyrene, applied in the direction of adsorption of water/sewage treatment, other chemical processes, chemical instruments and methods, etc., can solve the problems of poor stability of adsorption materials and low adsorption capacity, and reach the level of functionality Controllable, large adsorption capacity, wide applicable pH range

Active Publication Date: 2021-07-13
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor stability and low adsorption capacity of methyl orange adsorption materials in the prior art, according to the first aspect of the present invention, the present invention provides an amino-functionalized polystyrene material, which has both stable and With the advantages of good performance and high adsorption capacity, it can realize the efficient removal of methyl orange in printing and dyeing wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 3 grams of chloromethylated polystyrene (Aladdin Reagent Company, CAS No. 55844-94-5) to 100 milliliters of 1,4-dioxane, add 15 grams of p-phenylenediamine after fully swelling, The reaction was heated at 100°C for 8 hours. The obtained solid product was thoroughly washed with ethanol and deionized water in sequence, and dried under vacuum at 80° C. to obtain an amino-functionalized polystyrene adsorption material, which was designated as APS-1.

Embodiment 2

[0023] The operation steps are the same as in Example 1, the difference is that when preparing the amino-functionalized polystyrene adsorption material, the amount of p-phenylenediamine is changed to 3 grams (the mass ratio with chloromethylated polystyrene is 1:1) , the resulting material is denoted as APS-2.

Embodiment 3

[0025] Weigh 0.1 g of the amino-functionalized polystyrene adsorption material prepared in Examples 1 and 2 respectively, add them to 100 ml of 50 mg / L methyl orange solution, adjust the pH to 2, and vibrate at room temperature Adsorbed for 24 hours. The concentration of methyl orange solution was determined by ultraviolet absorption spectrometer. The measured saturated adsorption capacity of APS-1 to methyl orange is 178 mg / g, and the saturated adsorption capacity of APS-2 to methyl orange is 96 mg / g. It can be seen that the degree of amino functionalization can be adjusted by controlling the mass ratio of p-phenylenediamine and chloromethylated polystyrene. APS-1 with higher degree of amino functionalization has better adsorption effect.

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Abstract

The invention provides an amino-functionalized polystyrene-based adsorption material which is prepared by taking chloromethylated polystyrene as a matrix and reacting with p-phenylenediamine under a mild condition. The obtained material has the advantages of being good in stability, large in adsorption capacity, controllable in functionalization degree, wide in applicable pH range and the like, and methyl orange in printing and dyeing wastewater can be efficiently removed. The amino-functionalized polystyrene material prepared by the method is simple and convenient to prepare, the raw materials are easy to obtain, and polystyrene adsorption materials for treating different methyl orange concentrations can be directionally produced by adjusting the amino functionalization degree; meanwhile, the obtained material is large in adsorption capacity and wide in applicable pH range, and has a wide market prospect.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and relates to an amino functionalized polystyrene material and its application in absorbing methyl orange-containing wastewater. Background technique [0002] Methyl orange is one of the common pollutants in printing and dyeing wastewater. This type of wastewater has the characteristics of deep color, refractory degradation and complex composition, making it difficult to treat. The adsorption method is easy to operate, low in energy consumption and cost, and is an effective means of treating organic wastewater. The development of new adsorbent materials for treating printing and dyeing wastewater containing methyl orange is a hot topic in the field of environmental protection today. CN106237990A discloses a metal-organic framework composite material for adsorbing methyl orange. The material uses hexadecylpyridine bromide to modify ZIF-8. The adsorption capacity of methyl orange is large, bu...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/34C02F101/38
CPCB01J20/265C02F1/285C02F2101/34C02F2101/38C02F2101/40
Inventor 曾宪君胡宁胡瀚杰孙青云丁菁菁李秀枝
Owner CHONGQING UNIV
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