Nanjing University

Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering

Mancheng Zhang

Aimin Li

Chendong Shuang

Qing Zhou

Haibo Li

Wei Dong Wang

Yang Zhou

Hu Yang

Jinnan Wang

Chao Long

Fuqiang Liu

Mengqiao Wang

Zhaolian Zhu

Weiben Yang

Congjian Huang

Jingyi Jiang

Yuzhi Xue

Youdong Zhou

Implementations herein relate to a method for preparing organic-pollution-resistant ion exchange resins and application thereof. The method includes adding modified inorganic particles to prepare novel ion exchange resins containing inorganic particles modified by a parcel modifier. A weight ratio between the monomer of the ion exchange resins and the modified inorganic particles is about 0.1% to 30%. The method may increase moisture content of the resins 3 to 30% such as to improve the structures of the resins, and therefore increase the regeneration efficiency 0.4 to 70%, as compared to conventions resins. The method improves resistance of resins to organic pollution, increases regeneration efficiency, and extends service life of the resins. In the process of water treatment, the ion exchange resin of the implementations may be regenerated with long-term stability. In addition to securing the water treatment efficiency, the method may avoid frequent replacement operations and lower the costs.

Organic-pollution-resistant ion exchange resin and preparation method and application thereof

Implementations herein relate to a method for extraction of phthalates using hydrophilic magnetic resins with high specific surface areas. The implementations relate to a technical field of preparation of resins for fast enrichment and separation of trace organics in water. By adding magnetic particles, precursor resins may be prepared using divinylbenzene, vinyl benzoate and glycidyl methacrylate copolymerization ester. After the cross-linking reaction, surface areas of the resins are increased and hydrolysis of the ester group in alkaline solution may be implemented to obtain high specific surface magnetic resins rich in hydroxyl groups. The resins have higher adsorptive capacity and selectivity to adsorb phthalates in water samples. Rapid extraction may be implemented using magnetic solid phase extraction rod to achieve enrichment and separation of phthalates in a large amount of water samples.

Hydrophilic magnetic resin with high specific area, preparation method therefor and application method thereof for rapidly extracting phthalates in water body

This invention relates to the field of resin, particularly to a magnetic, acrylic strongly basic anion exchange microsphere resin and its manufacturing method. Its basic structure is as follow: wherein its matrix contains magnetic grains and A is a group containing quaternary ammonium salts; the manufacturing method is: taking acrylic compounds as the monomer and mixing it with the crosslinking agent and porogenic agent to form an oil phase; evenly mixing the oil phase with magnetic grains and then conducting suspension polymerization; aminating and alkylating the polymerized magnetic grains so as to form the quaternary ammonium salts, namely the magnetic, acrylic strongly basic anion exchange microsphere resin. The exchange capacity of this resin is higher than that of any magnetic strongly basic anion exchange microsphere resin available either on both Chinese and overseas markets or in literature; it is able to take the place of the traditional strongly basic anion exchange resin in separating and removing soluble organics, particularly precursors of disinfection by-products, and various anions such as nitrates and phosphates.

Magnetic, acrylic strongly basic anion exchange microsphere resin and the manufacturing method thereof

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Nanjing, China

Mancheng Zhang