公开(公告)号：US11458448B2

公开(公告)日：2022-10-04

申请号：US16764846

申请日：2018-04-20

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY & YANCHENG ACADEMY OF ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING

发明人： Chendong Shuang ,  Guang Zhang ,  Aimin Li ,  Ting Ye ,  Zheng Wang

IPC分类号： B01J20/02 ,  B01J41/10 ,  B01J20/30 ,  B01J20/28 ,  B01J20/26 ,  C02F1/42

摘要： A magnetic strong base anion exchange resin with high mechanical strength and a preparation method thereof, belonging to the field of resin materials. The preparation method comprises steps of: adding a conventional strong base anion exchange resin to a mixture of trivalent iron salt and divalent iron salt, and then mixing the resin adsorbed with the iron salt with aqueous ammonia so that Fe3O4 nanoparticles are contained in the resin structure. Then, the resin containing Fe3O4 nanoparticles is added to alcoholic solution dissolved with silane coupling agent to form a dense SiO2 coating on the surface of the resin, so as to obtain magnetic strong base anion exchange resin with high mechanical strength.

公开(公告)号：US11103865B2

公开(公告)日：2021-08-31

申请号：US15774966

申请日：2017-06-28

申请人： Nanjing University ,  Nanjing University & Yancheng Academy Of Environmental Protection Technology And Engineering

发明人： Peng Shi ,  Xun Cao ,  Xinchun Ding ,  Aimin Li ,  Jianjun Dai ,  Xiao Zhang ,  Xiang Peng ,  Dongmei Li ,  Yinsen Li ,  Jiali Tang

IPC分类号： B01J49/09 ,  B01J49/90 ,  C02F1/42 ,  C02F1/38 ,  B01J49/60

摘要： The invention discloses a fixed bed counter-current regeneration device for ion exchange resin and the method of use, relates to the field of ion exchange resin regeneration. The device comprises a cyclone separator, a regeneration reactor, a fully mixed resin reactor, a desorption solution storage tank, and a regenerant storage tank, wherein the cyclone separator is placed on top of the regeneration reactor, the upper part of the cyclone separator is connected to the fully mixed resin reactor. A resin inlet is provided at the bottom of the cyclone separator, a resin bed and a resin filter are arranged inside the regeneration reactor, a resin outlet and a regenerant inlet are arranged at the bottom of the regeneration reactor, the resin outlet is connected to the fully mixed resin reactor, the regenerant inlet is connected to the desorption solution storage tank and the regenerant storage tank, respectively, one side of the regeneration reactor is further provided with a regenerant outlet, and the regenerant outlet is connected to the desorption solution storage tank. The invention effectively improves resin regeneration efficiency via separator and counter-current, reduces the desorption solution yield, prevents mechanical wear and tear of the resin, and can be used as part of large-scale ion exchange resin applications.

公开(公告)号：US10010862B2

公开(公告)日：2018-07-03

申请号：US14913898

申请日：2014-08-21

申请人： Nanjing University ,  Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering

发明人： Qing Zhou ,  Mancheng Zhang ,  Aimin Li ,  Chendong Shuang ,  Mengqiao Wang ,  Wei Wang ,  Congjian Huang ,  Jingyi Jiang ,  Haibo Li

IPC分类号： B01J20/28 ,  C02F1/28 ,  B01J20/30 ,  C02F1/48 ,  B01J20/26 ,  B01J20/22 ,  C08F212/36 ,  C08F2/44 ,  C02F101/32 ,  C02F101/30

CPC分类号： B01J20/28009 ,  B01J20/223 ,  B01J20/267 ,  B01J20/3071 ,  C02F1/285 ,  C02F1/288 ,  C02F1/48 ,  C02F2101/305 ,  C02F2101/32 ,  C08F2/44 ,  C08F212/36 ,  C08F218/10 ,  C08F2220/286

摘要： 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.

公开(公告)号：US20210162397A1

公开(公告)日：2021-06-03

申请号：US15774966

申请日：2017-06-28

申请人： Nanjing University ,  Nanjing University & Yancheng Academy Of Environmental Protection Technology And Engineering

发明人： Peng Shi ,  Xun Cao ,  Xinchun Ding ,  Aimin Li ,  Jianjun Dai ,  Xiao Zhang ,  Xiang Peng ,  Dongmei Li ,  Yinsen Li ,  Jiali Tang

IPC分类号： B01J49/09 ,  B01J49/90 ,  B01J49/60 ,  C02F1/42 ,  C02F1/38

摘要： The invention discloses a fixed bed counter-current regeneration device for ion exchange resin and the method of use, relates to the field of ion exchange resin regeneration. The device comprises a cyclone separator, a regeneration reactor, a fully mixed resin reactor, a desorption solution storage tank, and a regenerant storage tank, wherein the cyclone separator is placed on top of the regeneration reactor, the upper part of the cyclone separator is connected to the fully mixed resin reactor. A resin inlet is provided at the bottom of the cyclone separator, a resin bed and a resin filter are arranged inside the regeneration reactor, a resin outlet and a regenerant inlet are arranged at the bottom of the regeneration reactor, the resin outlet is connected to the fully mixed resin reactor, the regenerant inlet is connected to the desorption solution storage tank and the regenerant storage tank, respectively, one side of the regeneration reactor is further provided with a regenerant outlet, and the regenerant outlet is connected to the desorption solution storage tank. The invention effectively improves resin regeneration efficiency via separator and counter-current, reduces the desorption solution yield, prevents mechanical wear and tear of the resin, and can be used as part of large-scale ion exchange resin applications.

公开(公告)号：US20160220982A1

公开(公告)日：2016-08-04

申请号：US14913898

申请日：2014-08-21

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING RESEARCH INS

发明人： Qing Zhou ,  Mancheng Zhang ,  Aimin Li ,  Chendong Shuang ,  Mengqiao Wang ,  Wei Wang ,  Congjian Huang ,  Jingyi Jiang ,  Haibo Li

IPC分类号： B01J20/28 ,  C02F1/28 ,  B01J20/30 ,  C02F1/48 ,  B01J20/26 ,  B01J20/22

CPC分类号： B01J20/28009 ,  B01J20/223 ,  B01J20/267 ,  B01J20/3071 ,  C02F1/285 ,  C02F1/288 ,  C02F1/48 ,  C02F2101/305 ,  C02F2101/32 ,  C08F2/44 ,  C08F212/36 ,  C08F218/10 ,  C08F2220/286

摘要： 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.

摘要翻译： 本文的实施方案涉及使用具有高比表面积的亲水性磁性树脂萃取邻苯二甲酸酯的方法。 这些实施方案涉及用于在水中快速富集和分离痕量有机物的树脂的制备技术领域。 通过添加磁性颗粒，可以使用二乙烯基苯，苯甲酸乙烯酯和甲基丙烯酸缩水甘油酯共聚酯来制备前体树脂。 在交联反应之后，树脂的表面积增加，碱性溶液中酯基的水解可以实现，以获得富含羟基的高比表面磁性树脂。 树脂具有较高的吸附能力和吸附水样中邻苯二甲酸酯的选择性。 可以使用磁性固相萃取棒实现快速萃取，以实现大量水样中的邻苯二甲酸酯的富集和分离。

公开(公告)号：US11254598B2

公开(公告)日：2022-02-22

申请号：US16764847

申请日：2018-04-20

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY & YANCHENG ACADEMY OF ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING

发明人： Chendong Shuang ,  Guang Zhang ,  Ting Ye ,  Aimin Li ,  Liang Tan ,  Ke Wang

IPC分类号： C02F9/00 ,  C02F1/42 ,  C02F1/48 ,  C02F3/30 ,  C02F101/16

摘要： In view of the current pollution to sewage by nitrate nitrogen, the present invention discloses a method for promoting denitrification to remove nitrate nitrogen in water by magnetic resins. In the method disclosed by the present invention, magnetic anion exchange resins are in contact with and mixed with sewage, and nitrate nitrogen in the sewage is removed quickly and efficiently by both the ion exchange between the magnetic anion exchange resins and the nitrate nitrogen in the sewage and the denitrification enhanced by the magnetic material. Meanwhile, the regeneration and recycle of the magnetic anion exchange resins are realized by the denitrification of microorganisms.

公开(公告)号：US10604599B2

公开(公告)日：2020-03-31

申请号：US15991937

申请日：2018-05-29

申请人： Nanjing University ,  Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering

发明人： Chendong Shuang ,  Weiwei Zhou ,  Yunshu Wang ,  Aimin Li ,  Qimeng Li ,  Lili Liu ,  Wei Wang ,  Yi Zhang

IPC分类号： C08F6/18 ,  C08F12/08 ,  C08K5/01 ,  C08K5/14 ,  C08K5/23 ,  C08K5/09

摘要： A method for green synthesis of uniform- and large-particle-size polystyrene particles, comprising steps of: prepolymerizing styrene at 70□ to 75□ for 1 h to 6 h in advance while stirring, adding divinylbenzene dissolved with initiators to the styrene, and stirring for 10 min to 30 min to obtain oil phase; heating lactic acid or an aqueous solution of lactic acid to 70□ to 80□, adding the oil phase to dispersed phase by a constant-pressure device, maintaining the temperature for 2 h, heating to 80±5□ and then maintaining the temperature for 1 h, and heating to 85±5□ and then maintaining the temperature for 3 h to 6 h, to obtain polystyrene particles with a uniform particle size ranging from 0.7 mm to 2.0 mm.

公开(公告)号：US10150685B2

公开(公告)日：2018-12-11

申请号：US15306773

申请日：2014-11-18

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING RESEARCH INSTITUTE ,  EST WATER AND TECHNOLOGIES CO., LTD

发明人： Aimin Li ,  Changming Wang ,  Haiou Song ,  Bojun Wang ,  Xiaowei Sun ,  Yeli Jiang ,  Zhaolian Zhu ,  Xun Chen ,  Jun Wang ,  Zhijian Yao ,  Chendong Shuang ,  Haibo Li ,  Yu Huang

IPC分类号： C02F9/00 ,  C02F1/48 ,  C02F1/46 ,  C02F1/469 ,  C02F1/28 ,  C02F1/42 ,  C02F1/44 ,  C02F1/52 ,  C02F103/00 ,  C02F103/34

摘要： A water reclamation method on the basis of integrated use of magnetic resin adsorption and electrosorption is provided. It belongs to the water reclamation field, including the following steps: pump the biotreated effluent into a reactor that is filled with magnetic resin particles so that the chromaticity, organic pollutants, total nitrogen, total phosphorus contained in the wastewater can be effectively reduced; channel the fully reacted mixture into a precipitation tank for separation; part of the separated magnetic resin is pumped back into the reactor while the rest of the separated magnetic resin flows into a regeneration tank; the wastewater treated by magnetic resin adsorption then flows into an electrosorption unit for a desalting process; the remaining organic pollutants and inorganic pollutants are further removed.

公开(公告)号：US09724687B2

公开(公告)日：2017-08-08

申请号：US14911994

申请日：2014-08-08

申请人： Nanjing University ,  Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering

发明人： Aimin Li ,  Zixiao Xu ,  Bicun Jiang ,  Chendong Shuang ,  Qing Zhou ,  Wentao Li ,  Xinchun Ding ,  Yeli Jiang ,  Mengqiao Wang ,  Ke Shen ,  Weiwei Zhou

IPC分类号： B01J20/34 ,  B01J49/00 ,  B01J49/50 ,  C02F1/42 ,  C02F1/52

CPC分类号： B01J49/50 ,  C02F1/42 ,  C02F1/52 ,  C02F2303/16

摘要： Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

公开(公告)号：US20160193600A1

公开(公告)日：2016-07-07

申请号：US14911994

申请日：2014-08-08

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY YANCHENG ACADEMY OF ENVIROMEN- TAL PROTECTION TECHNOLOGY AND ENGINEERING. . .

发明人： Aimin Li ,  Zixiao Xu ,  Bicun Jiang ,  Chendong Shuang ,  Qing Zhou ,  Wentao Li ,  Xinchun Ding ,  Yeli Jiang ,  Mengqiao Wang ,  Ke Shen ,  Weiwei Zhou

IPC分类号： B01J49/00

CPC分类号： B01J49/50 ,  C02F1/42 ,  C02F1/52 ,  C02F2303/16

摘要： Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

摘要翻译： 本文的实施方案涉及在树脂再生领域中减少用于离子交换树脂再生的解吸溶液的方法。 这些实施方案解决了在解吸过程中与再生剂的低利用率和大量解吸溶液相关的问题。 这些实施方案包括再生离子交换树脂，并且再生溶液变成解吸溶液。 在解吸溶液凝结沉淀和浆液分离后，从凝血液中除去大量的有机物，并留下大量的再生剂。 实施方案还包括将再生剂添加到凝血血清中以形成新的或更新的再生溶液以再生离子交换树脂。 因此，可以从解吸溶液产生凝血血清。 这些操作可以重复多次用于树脂再生。