Patents Assigned to Tongji University
  • Publication number: 20210318285
    Abstract: A method for testing ecotoxicity of disinfection by-products (DBPs) is disclosed, including the following steps: firstly, hatching and culturing a brine shrimp to obtain a second-instar brine shrimp larvae; secondly, putting the brine shrimp larvae into a water sample containing the DBPs, obtaining a survival rate through acute toxicity exposure and chronic toxicity exposure, respectively, to calculate the toxicity of the water sample to brine shrimp. The new method includes both acute and chronic toxicity tests. The test water sample can be either a single substance solution or an actual disinfection water sample. The brine shrimp has high sensitivity and is convenient to hatch and culture. The raw materials are inexpensive and easily available. The requirements for the culture environment are not high, and the toxicity end-point is clear. The new method is simple, sensitive and economical, and therefore, a popularization is feasible in sewage and reuse water plants.
    Type: Application
    Filed: January 14, 2021
    Publication date: October 14, 2021
    Applicant: Tongji University
    Inventors: Wenhai CHU, Zuxin XU, Xinmiao LUAN
  • Publication number: 20210309544
    Abstract: A denitrification system for removing nitrates in a water body by electrocatalytic hydrogen evolution and catalytic hydrogenation is disclosed. The denitrification system includes an electrolytic cell and a three-electrode system inserted into the electrolytic cell. The electrolytic cell contains electrolyte solution, and the denitrification catalyst is dispersed and suspended in the electrolyte solution. The three-electrode system includes a working electrode, a counter electrode and a reference electrode. The counter electrode adopts Pt sheet, the working electrode adopts the catalyst Ni3S2—NF, and the preparation steps of the catalyst Ni3S2—NF are as follows: (i) cutting a certain size nickel mesh and cleaning it; (ii) adding the cleaned nickel mesh into thiourea solution; (iii) reacting under hydrothermal conditions, and washing and drying to obtain the catalyst Ni3S2—NF.
    Type: Application
    Filed: August 27, 2020
    Publication date: October 7, 2021
    Applicant: Tongji University
    Inventors: Jianwei FAN, Zhangqiang HU, Weixian ZHANG, Xianqiang RAN, Wei TENG
  • Publication number: 20210309681
    Abstract: A preparation method and use of a graphite felt (GF)-supported metal-organic framework (MOF) cathode material is disclosed. The preparation method includes the following steps: preparing an iron salt, Pluronic F127, a weak acid, 2-aminoterephthalic acid, and a carbon felt; adding the iron salt and Pluronic F127 to deionized water and stirring a resulting mixture; adding the weak acid and 2-aminoterephthalic acid to the mixture, and stirring a resulting mixture to obtain an MOF precursor solution; adding the MOF precursor solution together with a pretreated carbon felt to a reactor, and sealing the reactor for hydrothermal reaction; and washing and vacuum drying a reaction product to obtain the cathode material. With a porous structure and a large specific surface area (SSA), the cathode material significantly increases the output of H2O2 when used in an electric Fenton system.
    Type: Application
    Filed: March 18, 2021
    Publication date: October 7, 2021
    Applicant: Tongji University
    Inventors: Ying WANG, Fengting LI, Bincheng XU
  • Publication number: 20210301750
    Abstract: An air-fuel ratio control system for a hybrid vehicle engine is provided, including a torque coordination calculation module, which converts a target effective torque of a hybrid power control unit into a target indicated torque; a torque estimation module, which obtains an estimated indicated torque according to an operating state of an engine; an air-fuel ratio feedback control module, which generates a feedback correction factor based on deviation between the estimated indicated torque and the target indicated torque; and an air-fuel ratio feedforward control module, which converts the target indicated torque into an air-fuel ratio feedforward control signal according to a calibration parameter and engine speed. A target air-fuel ratio is obtained by correcting the air-fuel ratio feedforward control signal, via the feedback correction factor; and the target air-fuel ratio is configured to act on the engine to achieve air-fuel ratio control.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 30, 2021
    Applicant: TONGJI UNIVERSITY
    Inventors: Diming LOU, Liang FANG, Piqiang TAN, Yunhua ZHANG, Zhiyuan HU, Yafeng SHI
  • Publication number: 20210292184
    Abstract: A device for continuous production of polyferric chloride and a method are disclosed. The device includes a first mixing pipeline, a second reaction pipeline, a third reaction pipeline, and a concentration device sequentially connected. The first mixing pipeline, the second reaction pipeline and the third reaction pipeline are each provided with a circulating spray device, and the circulating spray device includes a reflux pump, a reflux pipeline and an atomizer. The atomizer includes an atomizing pipe, and a chemical filler plate for promoting gas-liquid contact is arranged below the atomizing pipe. The reflux pump is used to extract liquid from each reaction tank, and then transport the liquid to the atomizer on the top of the reaction tank. The atomizer is driven by the pressure of the reflux pump or the motor to atomize the liquid.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 23, 2021
    Applicant: Tongji University
    Inventor: Fengting LI
  • Publication number: 20210283592
    Abstract: The invention is mainly related to a synthesis method of supported two-dimensional transition metal carbides for Fenton-like catalysis, which includes the following steps: (1) preparing two-dimensional transition metal carbides powders; (2) dispersing the two-dimensional transition metal carbides powders into intercalants solution to perform an intercalation reaction, and then centrifuging, washing, and freeze-drying to obtain intercalated products; (3) dispersing a certain quality previously obtained intercalated powders into ultrapure water and heating for pre-reaction, and then adding hydrogen peroxide solution to the pre-reacted mixed solution under ice-water bath for secondary etching, resting, centrifuging and gently decanting a supernatant to obtain the final Fenton-like catalysts.
    Type: Application
    Filed: August 6, 2020
    Publication date: September 16, 2021
    Applicant: TONGJI UNIVERSITY
    Inventors: Yue Jiang, Sijie Lin
  • Patent number: 11117822
    Abstract: The present invention relates to a method for simultaneous removal of heavy metals and organic matters from wastewater, including four steps: anoxic reaction, incubation reaction, aerobic reaction and sedimentation reaction, to solve tricky problems and shortcomings of current treatment technologies for industrial wastewater containing both heavy metals and organic substances. Compared with current technologies, in the present invention, by regulating and controlling heavy metal ions in wastewater, catalysts with function of activating molecular oxygen are in-situ generated, catalyzing dioxygen to produce strong oxidative species, thereby realizing catalytic oxidation of organic pollutants and crystallization and precipitation removal of heavy metals, which creatively treats waste using waste to achieve green oxidation, shortened treatment process, improvement of treating efficiency, reduction of economic cost and promotion of technology for industrial application.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: September 14, 2021
    Assignee: TONGJI UNIVERSITY
    Inventors: Deli Wu, Yang Zong, Zeyuan Tian, Yalei Zhang, Luming Ma
  • Publication number: 20210277029
    Abstract: A zirconium-based metal-organic framework material UiO-66(Zr) and a rapid room-temperature preparation method and application thereof are procided. The preparation method includes: (1) mixing a zirconium source and an organic ligand uniformly, then placing in methanol and stirring at room temperature, centrifuging and then discarding a supernatant to obtain a transparent gel-like intermediate product; and (2) heating and drying the intermediate product to obtain UiO-66(Zr). Compared with the prior art, the present invention excludes the use of N,N-dimethylformamide and other toxic organic solvents that are necessary in the traditional solvothermal method, and only needs to stir in methanol at room temperature and dry to obtain UiO-66(Zr). The method has mild conditions and a high yield. Moreover, the product purity is extremely high, and the product activation step can be omitted.
    Type: Application
    Filed: July 21, 2020
    Publication date: September 9, 2021
    Applicant: Tongji University
    Inventors: Fengting Li, Yinan Wu
  • Patent number: 11111255
    Abstract: A zirconium-based metal-organic framework material UiO-66(Zr) and a rapid room-temperature preparation method and application thereof are provided. The preparation method includes: (1) mixing a zirconium source and an organic ligand uniformly, then placing in methanol and stirring at room temperature, centrifuging and then discarding a supernatant to obtain a transparent gel-like intermediate product; and (2) heating and drying the intermediate product to obtain UiO-66(Zr). Compared with the prior art, the present invention excludes the use of N,N-dimethylformamide and other toxic organic solvents that are necessary in the traditional solvothermal method, and only needs to stir in methanol at room temperature and dry to obtain UiO-66(Zr). The method has mild conditions and a high yield. Moreover, the product purity is extremely high, and the product activation step can be omitted.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: September 7, 2021
    Assignee: TONGJI UNIVERSITY
    Inventors: Fengting Li, Yinan Wu
  • Patent number: 11113412
    Abstract: The present invention discloses a method and system configured for monitoring and verifying software behavior, comprising: receiving, by a software behavior verification system based on a physical hardware system, legal user behavior data containing user activities performed during legal electronic transactions and storing the legal user behavior data as a software behavior model; monitoring, by a software behavior monitor, data packets transmitted in a transaction, and sending data packets to the software behavior verification system; retrieving, by the behavior verification system, expected key sequences and information in the data packets; comparing the key sequences and information retrieved from the data packets with that of the software behavior model; if the key sequences and information retrieved from the data packets does not consistence with the software behavior model, it is determined that the transaction is an illegal electronic transactions, and the transaction is closed.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: September 7, 2021
    Assignee: TONGJI UNIVERSITY
    Inventors: Changjun Jiang, Hongzhong Chen, Chungang Yan, Zhijun Ding, Wangyang Yu, Junzhu Zhong
  • Publication number: 20210261461
    Abstract: The present disclosure provides a recycled powder concrete material for 3D printing construction and a preparation method therefor. The concrete material includes the following components by weight parts: cement: 1.0 part; recycled powder: 0.1-2.0 parts; recycled fine aggregate: 1.0-12.0 parts; nano titanium dioxide: 0.001-0.18 parts; high elastic modulus polyethylene fiber: 0.005-0.15 parts; redispersible latex powder: 0.002-0.1 parts; cellulose: 0.001-0.045 parts; activator: 0.01-0.30 parts; polycarboxylic acid water reducing agent: 0.005-0.2 parts; and water: 0.2-2.0 parts. According to the recycled powder concrete material for 3D printing construction, construction waste recycling powder technology is combined with 3D printing construction technology. The safety, applicability and durability of 3D printing recycled powder concrete material are further improved through the optimization of the recycled powder concrete formula.
    Type: Application
    Filed: January 23, 2019
    Publication date: August 26, 2021
    Applicant: TongJi University
    Inventors: Jianzhuang XIAO, Zhiming MA, Zhenhua DUAN, Jiangtao YU, Tao DING
  • Patent number: 11073459
    Abstract: Provided is a method for evaluating a pretreatment effect for organic solid waste based on fractal dimension, relating to biological conversion of organic solid waste. Samples of the organic solid waste are collected, and dried and broken up to obtain dried samples. The mixtures obtained are analyzed using a laser particle size analyzer, so as to measure a wave vector Q and a scattering intensity I of each of the mixtures. According to a fractal theory, the wave vector Q and the scattering intensity I obtained are analyzed using a data processing software to obtain a two-dimensional fractal dimension Df of each of the samples. Based on data from documents and experiments, a total organic carbon or an apparent activated energy is evaluated, so as to evaluate the pretreatment effects of samples of the organic solid waste.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: July 27, 2021
    Assignee: TONGJI UNIVERSITY
    Inventors: Xiaohu Dai, Yu Hua, Chen Cai, Shuxian Chen
  • Publication number: 20210213392
    Abstract: A high-performance thin-film composite polyamide membrane upcycled from a substrate fouled with a biopolymer and a preparation method thereof are provided. The method includes fouling the substrate preferably with the biopolymer to obtain a composite of the substrate and a biopolymer foulant layer; then immersing the composite into a first solution formed by dissolving a polyamine monomer in water, followed by taking the composite out of the first solution and removing excess droplets from a surface of the composite; then immersing the composite treated in the previous step into a second solution formed by dissolving an acyl chloride monomer in n-hexane for interfacial polymerization to form a rejection layer on the surface of the composite; and after completion of the reaction, taking the composite out of the second solution, followed by drying and heat treatment, to obtain the target polyamide membrane.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 15, 2021
    Applicants: Tongji University, Tianjin Polytechnic University
    Inventors: Zhiwei WANG, Ruobin DAI, Hongwei ZHANG, Liang WANG, Hongyi HAN, Tianlin WANG
  • Publication number: 20210208116
    Abstract: An instrument and a method for simultaneously testing a molecular weight distribution and an organic nitrogen level of a water sample are provided. The instrument comprises: a tail-end injection valve, a chromatographic column, a pressure relief valve, an acid-adding injection valve, an oxygen-adding injection valve, a helical tube for an acid-oxygen reaction, a CO2 remover, a UV digester, a second gas-water separator membrane, a buffer solution injection valve, a helical tube for a buffer solution reaction, a cadmium column, a chromogenic agent injection valve, a helical tube for a chromogenic agent reaction, and a UV detector, sequentially connected via a pipeline. The tail-end injection valve is for receiving a fluid phase and a sample. The second gas-water separator membrane is connected to an electrical conductivity-based CO2 detector. The UV detector and the electrical conductivity-based CO2 detector are connected to a data processing computer.
    Type: Application
    Filed: August 29, 2018
    Publication date: July 8, 2021
    Applicant: TONGJI UNIVERSITY
    Inventors: Lei LI, Wenjun ZHANG, Shichong Wang
  • Publication number: 20210205741
    Abstract: The present invention discloses a filtering device used for removing impurities in a mixture of biological diatomite, which relates to the technical field of sewage treatment. This device includes a plurality of deflectors evenly distributed in multiple layers in the vertical direction. Each deflector includes a shell and a top plate. There is a filter unit symmetrically arranged on the left and right sides of each deflector. The top of the shell is covered with a top plate hinged with the depressed plate. The bottom of the shell is provided with water inlets which communicate with the shunt pipe, and the upper parts of the left and right side walls of the shell are provided with overflow ports. The shell also has a plurality of diversion folding plates located below the overflow ports and vertically staggered and distributed on the left and right side walls. The filter unit includes an inclined water guiding groove and a filtering plate.
    Type: Application
    Filed: August 13, 2020
    Publication date: July 8, 2021
    Applicant: Tongji University
    Inventors: Xiaohu DAI, Bin LU, Xiaoli CHAI, Boran WU, Zheng ZHOU, Xiuzhong WANG
  • Publication number: 20210208554
    Abstract: The present disclosure provides a fire test system and method for tunnel structure based on real-time fusion of numerical and physical spaces. The fire test system includes: a physical test unit, to perform a holographic fire test on the typical segment components of tunnel structure system in a physical space, to obtain holographic characteristic parameter data of the typical components; a numerical analysis unit, to establish a full-scale numerical model of the tunnel-stratum composite system in a numerical space, to obtain multi-field coupling boundary data of the typical components; and a fusion control unit, to control and adjust a multi-field coupling boundary of the physical space according to the multi-field coupling boundary data, and to update and adjust an input parameter of the numerical space according to the holographic characteristic parameter data.
    Type: Application
    Filed: December 21, 2020
    Publication date: July 8, 2021
    Applicant: TONGJI UNIVERSITY
    Inventors: Zhiguo YAN, Hehua ZHU, Tong ZHANG, Wenqi DING, Yi SHEN
  • Publication number: 20210198123
    Abstract: A flexible electrocatalytic membrane for removing nitrate from water, a preparation method and use thereof are provided. The method of the present invention includes dropwise adding an aramid fiber solution into deionized water to prepare an aramid nanofiber sol, then reacting an ethanol solution containing 3,4-ethylenedioxythiophene and ferric nitrate with the aramid nanofiber sol to prepare a conductive aramid nanofiber sol, and finally dropwise adding MXene nanosheets ultrasonically pretreated by a tetramethylammonium hydroxide solution into the conductive aramid nanofiber sol to prepare the flexible electrocatalytic membrane. The prepared flexible electrocatalytic membrane possesses good mechanical strength and flexibility, and can not only effectively remove nitrate but also avoid failure of electrocatalytic materials due to surface fouling in the process of electrocatalytic reduction of nitrate, and thus has a long service life.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 1, 2021
    Applicants: Tongji University, Tianjin Polytechnic University
    Inventors: Zhiwei WANG, Yang LI, Hongwei ZHANG, Jie WANG, Xueye WANG
  • Publication number: 20210198122
    Abstract: A device for decomplexation and enhanced removal of copper based on self-induced Fenton-like reaction constructed by electrochemistry coupled with membrane separation is disclosed. The device includes a reactor, two electrocatalytic anodes capable of generating hydroxyl radicals, an electrocatalytic cathode membrane assembly, a direct current power supply, an aeration system, an inlet pipe and an outlet pipe. The device of the present invention has a simple construction. Using this device to treat industrial wastewater containing copper complexes under specific conditions allows the decomplexation and the removal of the industrial wastewater containing the copper complexes to be simultaneously realized at a low consumption and a high efficiency. The coupling of electrochemistry with membrane separation can be achieved to protect the cathode from being contaminated by pollutants in the sewage and prolong the service life of the electrode.
    Type: Application
    Filed: July 21, 2020
    Publication date: July 1, 2021
    Applicants: Tongji University, Tianjin Polytechnic University
    Inventors: Zhiwei WANG, Hongwei ZHANG, Liang WANG, Jiayi LI, Xueye WANG, Mei CHEN, Ruobin DAI
  • Publication number: 20210178362
    Abstract: A method for assembling and synthesizing Cu2O particle-supported porous CuBTC includes the following steps of: 1) dissolving polyvinylpyrrolidone (PVP) in ethanol solution to obtain a PVP-ethanol solution; 2) dissolving copper salt in distilled water, and mixing with trimesic acid, salicylic acid, and the PVP-ethanol solution obtained in step 1) under stirring; and 3) conducting a hydrothermal reaction on the mixed solution obtained in step 2) at 120° C. to obtain Cu2O particle-supported porous CuBTC. The new method introduces salicylic acid during the synthesis of CuBTC. The salicylic acid, as a ligand precursor, forms a porous CuBTC material through the unsaturated coordination of a ligand under the catalysis of Cu ion. The resulting porous CuBTC supported with ultrafine Cu2O nanoparticles can adsorb high-energy molecules and exhibit excellent crystallinity, porosity, and stability.
    Type: Application
    Filed: July 8, 2020
    Publication date: June 17, 2021
    Applicant: Tongji University
    Inventors: Fengting LI, Ying WANG, Tao FENG
  • Publication number: 20210147268
    Abstract: A method for enhancing biochemical water treatment by a powder carrier includes: (i) screening the powder carrier by removing impurities to obtain a screened powder carrier; (ii) dissolving the screened powder carrier by stirring to prepare a slurry, enabling the screened powder carrier to completely absorb moisture to obtain a soaked powder carrier slurry; (iii) adjusting the pH value and adding the soaked powder carrier slurry into a bioreactor or a biological reaction structure; (iv) distributing the soaked powder carrier slurry uniformly through a hydraulic agitation; (v) loading a microorganism on the inner pore and wrapping on the surface of the soaked powder carrier slurry to obtain powder-loaded biological floccules; (vi) settling the powder-loaded biological floccules in a sedimentation zone and separating the powder carrier from the microorganism for reuse.
    Type: Application
    Filed: September 23, 2020
    Publication date: May 20, 2021
    Applicant: Tongji University
    Inventors: Xiaoli CHAI, Xiaohu DAI, Bin LU, Boran WU