Article
Engineering, Chemical
A. A. M. Abusultan, J. A. Wood, T. Sainio, A. J. B. Kemperman, W. G. J. van der Meer
Summary: Reverse osmosis (RO) membrane technology is widely used for producing high-quality drinking water. An ion exchange resin - bipolar membrane electrodialysis hybrid process was developed for sustainable RO permeate remineralization. The most suitable resin for the remineralization process should have high selectivity for calcium and magnesium and low selectivity for monovalent ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Zahraa Hameed Al-Agili
Summary: Iraq is facing the issue of water contamination with nitrates due to sewage discharge into rivers. Research has shown that using the economical alternative of Duolite A-378 weak base anion exchange resin is more efficient in removing nitrates from water compared to the high cost Amberlite IR-400 strong base anion exchange resin.
DESALINATION AND WATER TREATMENT
(2021)
Review
Chemistry, Applied
Vladimir Rychkov, Evgeny Kirillov, Sergey Kirillov, Grigory Bunkov, Maxim Botalov, Vladimir Semenishchev, Denis Smyshlyaev, Andrey Malyshev, Aslan Taukin, Ata Akcil
Summary: Selection of appropriate method for rare earth element (REE) preconcentration from industrial by-products is challenging. Liquid extraction and ion exchange methods are commonly used, while sorption processes are gaining attention for the recovery of REE from industrial wastes.
SEPARATION AND PURIFICATION REVIEWS
(2022)
Article
Environmental Sciences
Jie Wang, Yongcan Jiang, Musheng Xu, Cong Han, Lichao Zhang, Guanglong Liu
Summary: Adsorption technology is effective in removing phosphorus from water and recovering phosphorus resources. This study developed an iron-manganese oxide-modified resin composite adsorbent based on the nanoconfinement theory to address the competitive adsorption and pore blockage issues during phosphorus removal. The adsorbent showed good stability, high adsorption capacity, and selectivity for phosphorus even in the presence of coexisting ions and humic acid.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Analytical
B. Robert Selvan, A. S. Suneesh, N. Ramanathan
Summary: This paper presents a study on the extraction chromatography-based recovery of uranium using a diglycolamic acid-coated polymeric resin from low-concentration uranium-bearing solutions. Various factors, such as pH, interfering ions, uranium concentration, and contact duration, have been investigated to control the separation of uranium. The adsorption kinetics and isotherm models are evaluated using the pseudo-first and the pseudo-second-order adsorption kinetics. The results of batch and column-based adsorption studies support the potential of using diglycolamic acid-coated polymeric resin for uranium separation from low-concentration feeds.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Analytical
Wei Wang, R. Douglas Evans, Hayla E. Evans
Summary: An online separation and preconcentration method using automated flow injection setup and solid phase extraction followed by ICP-MS/MS has been developed for analysis of Sr-90, U, Am, and Pu isotopes. The system offers faster analysis time, smaller sample volumes, minimal sample preparation, low detection limits, and flexibility to handle single and multiple measurements of various radionuclides, making it a novel and fully automated analytical tool. Evaluation of analytical figures of merit with sample matrices like lake water, seawater, and urine showed comparable results to literature reports.
Article
Chemistry, Physical
Yihang Cheng, Lishi Wang, Shanwen Yu, Rui Min
Summary: By utilizing the green electro-mechanical polishing method, surface roughness of metallic parts can be effectively reduced, although prolonged polishing time may result in the formation of local corrosion pits.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Jose Hernandez, Daniel Ruiz
Summary: This study demonstrated the technical feasibility of recovering uranium from copper Pregnant Leaching Solutions (PLS) by using ion-exchange after removing chloride ions with electrodialysis (ED). The modified ED process successfully decreased the chloride content in the PLS, allowing for increased loading capacity of ion-exchange resins.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Anna Matskevich, Eduard Tokar, Nikita Markin, Igor Priimak, Andrei Egorin
Summary: The effect of H2SO4 and FeSO4 concentrations and temperature on the decontamination of spent ion-exchange resins was studied. It was found that increasing the solution temperature and adding FeSO4 significantly improved the efficacy of decontamination, especially under dynamic conditions. Extra washing steps were required to remove secondary adsorption under static conditions. The use of H2SO4 (1 mol/L) + FeSO4 (0.2 mol/L) solution reduced the volume of waste and equipment corrosion.
Article
Engineering, Environmental
Chengtao Yue, Renjuan Liu, Qiyue Wan, Hai Wang, Longcheng Liu, Xu Zhang
Summary: In this study, a phosphate-based hypercrosslinked polymer (HCP) was synthesized and found to have a high efficiency in adsorbing uranium (VI) from solution. The HCP exhibited a uranophilic phosphate group, a large specific surface area, and a mesoporous structure. It showed good selectivity and recyclability for uranium (VI) and could be well applied in extraction processes. The sorption mechanism was also investigated and the coordination effect between phosphate groups and uranium (VI) ions was found to enhance the effective sorption of uranium (VI) on HCP.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Goncagul Emir, Direncan Engindeniz, Ozgur Arar
Summary: This study tested the capability of electrodeionization in bath mode to remove phosphate ions from aqueous solutions. The results showed that the removal rate of phosphate ions depended on the applied voltage, flow rate, and pH of the solution. Electrodeionization demonstrated high efficiency in removing phosphate from water solutions, making it a promising technology for water treatment applications.
WATER ENVIRONMENT RESEARCH
(2023)
Article
Engineering, Environmental
Yanying Hou, Lujie Liu, Qiaole He, Di Zhang, Jiayang Jin, Banghe Jiang, Liming Zhao
Summary: This study investigated the adsorption characteristics of chitooligosaccharides on ion-exchange resin and found that the adsorption equilibrium followed the Langmuir model, with adsorption capacity decreasing with increasing degree of polymerization. The adsorption kinetics were well described by the pseudo-second-order kinetic model. Liquid-film diffusion and intra-particle diffusion were identified as the rate-limiting steps for adsorption. Thermodynamic analysis revealed that the adsorption of chitooligosaccharides on HX-7 resin was spontaneous and feasible, with higher polymerization degrees leading to stronger interaction forces and more favorable adsorption.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yu-Yi Shen, Chung-Chun Hsu, Shao-Wei Tsai, Chia-Hung Hou
Summary: This study improved the electrosorptive removal of phosphate in membrane capacitive deionization by coating an activated carbon electrode with a heterogeneous anion-exchange resin layer. The AE-AC composite electrode significantly increased the selectivity coefficient of phosphate over chloride and improved the electrosorption capacity of phosphate.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Nicolas Reynier, Roselyne Gagne-Turcotte, Lucie Coudert, Sophie Costis, Rory Cameron, Jean-Francois Blais
Summary: This study found that tailings from inactive uranium mine sites can serve as a potential secondary source of rare earth elements, with successful solubilization of key elements like REEs, U, and Th through bioleaching experiments. Different ion exchange resins could be used for effective recovery of these elements, showing promising results for co-extraction from the bioleaching solution.
Article
Engineering, Environmental
Julia Bitencourt Welter, Matheus Fell Simonaggio, Salatiel Wohlmuth da Silva, Manuel Cesar Marti-Calatayud, Valentin Perez-Herranz, Jane Zoppas Ferreira
Summary: This study evaluated the transport of atenolol in an electrodialysis cell to lay the foundation for the application of hybrid electrooxidation and electrodialysis processes. The results showed that atenolol removal rate can be high under specific current density conditions. In addition, the residual atenolol in the ion-exchange membrane can be desorbed by applying an electric field at inverse polarity, providing the possibility for the implementation of the hybrid process.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Mohamad Mahani, Hamid Sepehrian, Homa Shaikhghomi, Javad Fasihi
PARTICULATE SCIENCE AND TECHNOLOGY
(2016)
Article
Chemistry, Multidisciplinary
S. Mahmood Fatemi, Masoud Arabieh, Hamid Sepehrian
Article
Nuclear Science & Technology
Hamed Tavakoli, Hamid Sepehrian, Fatemeh Semnani, Mohammad Samadfam
ANNALS OF NUCLEAR ENERGY
(2013)
Article
Chemistry, Multidisciplinary
Gholam Hossein Mahdavinia, Ali Mohammad Amani, Hamid Sepehrian
CHINESE JOURNAL OF CHEMISTRY
(2012)
Article
Engineering, Chemical
Noredin Karkhanei, Hamid Sepehrian, Ramin Cheraghali
DESALINATION AND WATER TREATMENT
(2015)
Article
Engineering, Chemical
Somayeh Vashnia, Hamed Tavakoli, Ramin Cheraghali, Hamid Sepehrian
DESALINATION AND WATER TREATMENT
(2015)
Article
Engineering, Chemical
Harried Tavakoli, Hamid Sepehrian, Ramin Cheraghali
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2013)
Article
Engineering, Chemical
Ali Malekynejad, Hamid Sepehrian, Mahbobeh Manoochehri
PARTICULATE SCIENCE AND TECHNOLOGY
(2013)
Article
Engineering, Chemical
Maryam Dashtinejad, Mohammad Samadfam, Javad Fasihi, Fatemeh Grayeli Fumeshkenar, Hamid Sepehrian
PARTICULATE SCIENCE AND TECHNOLOGY
(2014)
Review
Chemistry, Multidisciplinary
Seyyed Mahmoud Mousavi, Hamed Tavakoli, Mohammad Samadfam, Fatemeh Semnani, Zahra Asadi, Hamid Sepehrian
RESEARCH ON CHEMICAL INTERMEDIATES
(2013)
Article
Chemistry, Multidisciplinary
Somayeh Vashnia, Hamed Tavakoli, Ramin Cheraghali, Hamid Sepehrian
SEPARATION SCIENCE AND TECHNOLOGY
(2014)
Article
Polymer Science
Ali Abbasi, Reza Davarkhah, Armen Avanes, Ali Yadollahi, Mohammad Ghannadi-Maragheh, Hamid Sepehrian
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2020)
Article
Engineering, Multidisciplinary
M. Kowsari, H. Sepehrian
INTERNATIONAL JOURNAL OF ENGINEERING
(2015)
Article
Engineering, Multidisciplinary
R. Cheraghali, H. Tavakoli, H. Sepehrian
Article
Nuclear Science & Technology
Kecheng Jiang, Jinzhao Yang, Xueli Zhao, Lei Chen, Fujun Gou, Songlin Liu
Summary: The blanket, as a key component of the fusion reactor, plays important roles in breeding tritium, shielding neutrons, and extracting thermal energy for electricity generation. Understanding the characteristics of gas-liquid two-phase flow and mass transfer is essential for optimizing the design of tritium extraction units in the blanket.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Anna-Elina Pasi, Teemu Karkela, Fredrik Borjesson Sanden, Unto Tapper, Tuula Kajolinna, Christian Ekberg
Summary: This study investigates the gas-phase interactions between tellurium and organic material under severe nuclear accident conditions. The results show that there is interaction between tellurium aerosols and organic material, leading to an increase in the gaseous fraction and changes in XPS spectra. Although the exact species are not identified, these findings raise questions about the behavior of tellurium and its reactions with organic material in severe accident conditions.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Ao Zhang, Qingye Li, Chaoyong Zong, Fuwen Liu, Tianhang Xue, Jian Xiao, Xueguan Song
Summary: In this study, a high-fidelity computational fluid dynamics model was established to investigate the flow characteristics of a novel balanced globe valve. The study found that the size of the throttle orifice and valve disc displacement have a significant impact on fluid force. The findings provide a basis for the design and dynamic control of globe valves, and also have potential value for energy utilization.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Wenbo Li, Yunqing Bai, Shuai Zhang, Yang Li, Ming Jin, Chunjing Li
Summary: In this study, a 3D-CFD model based on the SUPERCAVNA facility was established to analyze thermal stratification in liquid-metal-cooled nuclear reactors. The results show that the SKE model is the most accurate in predicting temperature distribution, and further parametric studies were conducted.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Song Jin, Di Jiang, Dongmei Wang, Shaojie Wang, Zhen Wang
Summary: This study presents the fragility evaluation of a nuclear containment structure subjected to earthquake and subsequent internal pressure sequence. Nonlinear finite element model and ground motion records are used to analyze the nonlinear response and fragility of the structure. Results show that the distribution of maximum strain and displacement of the structure under earthquake and subsequent pressure are significantly different, with displacement distribution related to ground motion intensity levels.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Kazumasa Shimada, Tatsuya Sakurahara, Pegah Farshadmanesh, Seyed Reihani, Zahra Mohaghegh
Summary: This research improves the realism of Level 3 probabilistic risk assessment for nuclear power plants by modeling the evacuation behavior of residents and incorporating two advancements. The first advancement uses evacuation speed from a transportation simulation code as input to the Level 3 PRA code, enabling explicit incorporation of spatiotemporal evacuation processes. The second advancement incorporates the probability of seismic damage to roadway bridges into Level 3 PRA and calculates evacuation routes and speeds considering the impact of seismic damage.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
F. Mascari, A. Bersano, M. Massone, G. Agnello, O. Coindreau, S. Beck, L. Tiborcz, S. Paci, M. Angelucci, L. E. Herranz, R. Bocanegra, Y. Pontillon, M. Berdai, O. Cherednichenko, A. Iskra, M. Nudi, P. Groudev, P. Petrova, F. Kretzschmar, F. Gabrielli, Z. Kanglong, V. Vileiniskis, T. Kaliatka, J. Kalilainen, M. Malicki, D. Gumenyuk, Y. Vorobyov, O. Kotsuba, P. Dejardin, M. Di Giuli, R. Thomas, I. V. Ivanov, F. Giannetti, M. D'Onorio, G. Caruso, M. Salay, T. Sevon
Summary: The MUSA project aims to analyze uncertainties and sensitivities associated with severe accidents using a harmonized approach, particularly focusing on source term figures of merit. The project applied and tested uncertainty quantification methodologies using the PHEBUS FPT1 test. The study found that scripting for coupling SA codes and uncertainty tools can increase flexibility, and careful consideration should be given to selecting the input uncertain parameters.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Ian Greenquist, Nathan Capps
Summary: The US nuclear energy industry is investigating strategies to increase reactor operating cycle to 24 months. Multiphysics simulations tools and methodologies are being developed to predict the effects of this change during transient events such as loss-of-coolant accidents (LOCAs).
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Guangchun Zhang, Hu Zhang
Summary: In this study, a neutron transport code called TARS is introduced, which is based on the discrete-ordinates discontinuous finite element method. TARS provides accurate and efficient solutions to the neutron transport equation, addressing existing challenges in the field. The evaluation results demonstrate that TARS generates highly accurate solutions and achieves high parallel computation efficiency.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
J. R. Daniels, M. M. R. Williams, M. D. Eaton
Summary: This paper presents the development and verification of a collision probability (CP) code for neutron transport in slabs and cylinders. The CP code is particularly useful for modelling layered systems of aqueous and organic plutonium nitrate. The code provides a computationally inexpensive alternative to higher fidelity codes like MCNP. It is effective for slab geometries with at least 0.7 g cm-2 plutonium, but its approximation for heterogeneous cylinders can lead to overestimation of neutron leakage. Increasing the cylinder radius to 40.0 cm improves the accuracy for systems with at least 2.75 kg plutonium. However, the code's accuracy decreases when modelling cylindrical geometries with dished ends and low plutonium content.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Alexander A. Ryzhkov, Georgy V. Tikhomirov, Mikhail Yu. Ternovykh
Summary: This paper analyzes the impact of nuclear data uncertainties on the safety of advanced reactors, with a specific focus on angular distribution uncertainties. Through sensitivity and uncertainty analysis, key parameters for MOX3600 are identified, and a comparison of different libraries' uncertainties on the eigenvalue is performed.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
Y. Fontenla, A. Vidal-Ferrandiz, A. Carreno, D. Ginestar, G. Verdu
Summary: FEMFFUSION is an open source code that solves the multigroup neutron transport equation using the diffusion and the SPN approximations. It uses the finite element method to handle various geometries and problem dimensions, and has been verified against the C5G7 benchmark.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
J. Tyler Gates, Pavel V. Tsvetkov
Summary: The Optical Fiber Based Gamma Thermometer utilizes optical fiber as a distributed temperature sensor to measure the temperature of a thermal mass undergoing gamma heating and calculate the gamma flux data. This technology shows promise in determining the local power density within a nuclear reactor core and provides an unparalleled level of precision in reactor power measurement.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
A. de Lara, A. Schubert, E. Shwageraus, P. Van Uffelen
Summary: This study presents a new methodology to derive the radial form factor in the TRANSURANUS burnup model using simulations. The proposed methodology can be applied to different types of reactors, including LWRs and HWRs, and is suitable for advanced technology fuels.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Nuclear Science & Technology
A. Bousbia Salah, M. Di Giuli, P. Foucaud, R. Iglesias, A. Malkhasyan, M. Salmaoui, L. E. Herranz
Summary: In the framework of the R2CA project, the application of advanced codes for evaluating radiological release under design basis accidents was considered. The study focused on a specific scenario and assessed the results obtained by different organizations using different computational tools and approaches. The outcomes highlighted modeling differences and challenges in carrying out such analysis.
ANNALS OF NUCLEAR ENERGY
(2024)
