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公开(公告)号：US12285747B2
公开(公告)日：2025-04-29
申请号：US18459263
申请日：2023-08-31
Applicant: Harbin Institute of Technology
Inventor： Panpan Wang , Han Wang , Jun Ma , Shiyi Qiu , Junda Yi
Abstract: A method of utilizing humic acid to prepare layered humic acid/manganese oxide composite catalyst and its application, the method includes the steps of: adding sodium hypochlorite, manganese salt and humic acid to a water source, stirring and mixing; then introducing into a filter device having a filter material of manganese and a support medium, and generating a layered humic acid/manganese oxide composite catalyst on a surface of the filter material while directing a continuous water flow of the water source into the filter device with a short empty bed contact time for a short time. The catalyst can be used to effectively remove manganese to maintain an effluent with a Mn2+ concentration of not more than 20 μg/L and to effectively remove heavy metals such as iron, manganese, arsenic, thallium, molybdenum or lead from the water source under neutral, acidic or alkaline conditions with a removal rate of 95% more.
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2.发明授权公开(公告)号：US11560324B2
公开(公告)日：2023-01-24
申请号：US17054456
申请日：2018-07-16
Applicant: Harbin Institute of Technology
IPC: C02F1/72 , C02F1/28 , C02F1/52 , C02F1/62 , C02F101/20 , C02F101/22 , C02F103/06 , C02F1/56
Abstract: In order to solve the problem in the existing conventional water treatment process of low removal efficiency of heavy metal in water, especially lower efficiency for simultaneous removal of heavy metal pollutants during coexisting, a method is provided for removing heavy metal pollutants in water with divalent manganese strengthened ferrate: preparing a ferrate mother liquor having the concentration of 20-10,000 mmol/L; preparing a divalent manganese salt mother liquor having the concentration of 30-10,000 mmol/L; adding the divalent manganese salt mother liquor into water of the heavy metal pollutants; then adding the ferrate mother liquor, and reacting; and then adding a flocculant and precipitating, so that the removal rate of arsenate, chromium, thallium, antimony, chromium and molybdate in water is 90% or more, and the removal rate of heavy metal such as lead and cadmium is 85% or more.
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Patent Agency Ranking
公开(公告)号：US10196279B2
公开(公告)日：2019-02-05
申请号：US15113615
申请日：2015-01-22
Applicant: Harbin Institute of Technology
Inventor： Jun Ma , Yulei Liu , Lu Wang , Qingliang Liu , Xiaodan Zhao
IPC: C01G49/00
Abstract: A method for efficiently preparing ferrate based on nascent state interfacial activity. The method is as follows: (a) preparing nascent iron solution; (b) adding an oxidizing agent to the iron solution of step (a); (c) adding alkali solution or alkali particles to the mixed solution of step (b), mixing by stirring, and carrying out solid-liquid separation; (d) adding a stabilizing agent to the liquid separated out in step (c), and thus obtaining ferrate solution. The yield is 78-98%. The prepared ferrate solution is stable and can be stored for 3-15 days.
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公开(公告)号：US20160304356A1
公开(公告)日：2016-10-20
申请号：US14687828
申请日：2015-04-15
Applicant: Harbin Institute of Technology
Inventor： Jun Ma , Yulei LIU , Xiaodan ZHAO , Jiayue XIAO
CPC classification number: C01G49/0081 , A61K33/26
Abstract: A method of synthesizing ferrate, which includes the steps of: (a) weighing and obtaining iron salts, activating agents, alkalinizing agents and oxidizing agents solution; (b) mixing uniformly the iron salts, the activating agents and the alkalinizing agents, heating to 30˜398° C. and maintaining for 1 min˜60 min to obtain a mixture; (c) adding the oxidizing agents solution to the mixture with an adding time of less than 10 minutes, then obtaining a precursor; and (d) natural cooling the precursor, then mixing the precursor with water and stirring evenly to obtain a final product of ferrate, wherein a volume ratio of the precursor and the water is 1:1˜5. The method involves low power consumption, low temperature, low explosion risk, non-complicated steps and procedures, short synthetic time and high ferrate conversion efficiency. The method produces ferrate of high yield and good stability, and is suitable for producing ferrate composite pharmaceuticals in industrialized mass production.
Abstract translation: 一种合成高铁酸盐的方法，其包括以下步骤：（a）称重并获得铁盐，活化剂，碱化剂和氧化剂溶液; （b）将铁盐，活化剂和碱化剂均匀混合，加热至30〜398℃，保持1〜60分钟，得到混合物; （c）以小于10分钟的添加时间将氧化剂溶液加入到混合物中，然后获得前体; 和（d）天然冷却前体，然后将前体与水混合并均匀搅拌，得到高铁酸盐的最终产物，其中前体和水的体积比为1:1至5。 该方法涉及低功耗，低温，低爆炸风险，非复杂步骤和程序，合成时间短，高铁酸盐转化效率高。 该方法生产高产高铁酸盐，稳定性好，适用于工业化大批量生产高铁酸盐复合药物。
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公开(公告)号：US11198619B2
公开(公告)日：2021-12-14
申请号：US16250435
申请日：2019-01-17
Applicant: Harbin Institute of Technology
Inventor： Jun Ma , Yulei Liu , Lu Wang , Qingliang Liu , Xiaodan Zhao
IPC: C01G49/00
Abstract: A method for efficiently preparing ferrate based on nascent state interfacial activity. The method is as follows: (a) preparing nascent iron solution; (b) adding an oxidizing agent to the iron solution of step (a); (c) adding alkali solution or alkali particles to the mixed solution of step (b), mixing by stirring, and carrying out solid-liquid separation; (d) adding a stabilizing agent to the liquid separated out in step (c), and thus obtaining ferrate solution. The yield is 78-98%. The prepared ferrate solution is stable and can be stored for 3-15 days.
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公开(公告)号：US09902624B2
公开(公告)日：2018-02-27
申请号：US15111995
申请日：2014-04-30
Applicant: Harbin Institute of Technology
Inventor： Jun Ma , Yulei Liu , Lu Wang , Xiaodan Zhao , Qingliang Liu
CPC classification number: C01G49/0081
Abstract: A preparation method for a composite ferrate reagent. 1, Weigh raw materials; 2, evenly mix a ferric salt, an activating agent and an alkali maintaining agent and heat the mixture; 3, add an oxidant solution; and 4, cool and mix the solution with water. The technical problems of high energy consumption, low yield and poor ferrate product stability of the existing method for preparing ferrate are solved. The obtained product can be stably stored, and the yield of the ferrate reaches 60% to 95%.
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公开(公告)号：US09682870B2
公开(公告)日：2017-06-20
申请号：US14687828
申请日：2015-04-15
Applicant: Harbin Institute of Technology
Inventor： Jun Ma , Yulei Liu , Xiaodan Zhao , Jiayue Xiao
CPC classification number: C01G49/0081 , A61K33/26
Abstract: A method of synthesizing ferrate, which includes the steps of: (a) weighing and obtaining iron salts, activating agents, alkalinizing agents and oxidizing agents solution; (b) mixing uniformly the iron salts, the activating agents and the alkalinizing agents, heating to 30˜398° C. and maintaining for 1 min˜60 min to obtain a mixture; (c) adding the oxidizing agents solution to the mixture with an adding time of less than 10 minutes, then obtaining a precursor; and (d) natural cooling the precursor, then mixing the precursor with water and stirring evenly to obtain a final product of ferrate, wherein a volume ratio of the precursor and the water is 1:1˜5. The method involves low power consumption, low temperature, low explosion risk, non-complicated steps and procedures, short synthetic time and high ferrate conversion efficiency. The method produces ferrate of high yield and good stability, and is suitable for producing ferrate composite pharmaceuticals in industrialized mass production.
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