Hyperbranched polymer for efficiently recovering boron and ultrafiltration process thereof

A technology of hyperbranched polymer and hyperbranched polymer, applied in ultrafiltration, water pollutants, chemical instruments and methods, etc., can solve the problems of low kinetics, low boron, interception, etc., and achieve the effect of improving interception efficiency
CN113174039APending Publication Date: 2021-07-27徐州禹慧环境科技研究院有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
徐州禹慧环境科技研究院有限公司
Publication Date
2021-07-27

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Abstract

The invention belongs to the technical field of membrane filtration, and particularly relates to a hyperbranched polymer for efficiently recovering boron and an ultrafiltration process thereof. The invention discloses a hyperbranched polymer for efficiently recovering boron, the hyperbranched polymer is a hyperbranched polyhydroxy polymer, and the hyperbranched polyhydroxy polymer is one of hyperbranched polyglycerol and a Diol-HPEI polymer; the hyperbranched polyglycidol is synthesized through an anion ring-opening polymerization reaction of glycidol on a pentaerythritol (THME) core, NaOCH3 is used as a catalyst, and 1, 4-dioxane is used as a reaction medium; and the Diol-HPEI polymer is synthesized by grafting glycidol to hyperbranched polyethyleneimine (HPEI) molecules through an epoxy amine nucleophilic addition reaction. The invention also discloses an ultrafiltration process of the hyperbranched polymer for efficiently recovering boron, which comprises the following steps: S1, dissolving the hyperbranched polymer in a solution containing boric acid, and adjusting the pH value; and S2, after adjustment is completed, stirring for 50-70 min, and then using an ultrafiltration membrane for filtering the solution.
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Description

technical field

[0001] The invention belongs to the technical field of membrane filtration, and in particular relates to a hyperbranched polymer for efficiently recovering boron and an ultrafiltration process. Background technique

[0002] As a ubiquitous element in nature, boron is mainly distributed in various water bodies in the form of boric acid. In industry, boron compounds are mainly used in the production of glass fibers, detergents, fuel cells, etc. However, when it reaches a certain level, it is also toxic. Therefore, boron is a potential water pollutant and an important industrial raw material, which needs to be recycled from wastewater and seawater urgently. Due to the complex morphology of boron, there is currently no efficient and economical method to separate boron from wastewater, especially from neutral solutions, because the molecular properties of unseparated boric acid are very similar to water molecules. To date, technologies including reverse osmosis...

Claims

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