Article
Engineering, Multidisciplinary
Salma Ahmed Al-Zahrani, Imran Khan
Summary: A new and novel heavy metal ion selective organic-inorganic composite was successfully prepared and used for the preparation of an ion-selective membrane electrode with excellent selectivity for Hg2+ ions.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Brian Gray, John N. Kuhn, Babu Joseph
Summary: This study investigated the ability of a zeolite shell to enhance the selective conversion of hydrocarbons. The results showed that the thickness of the zeolite shell and the size of the molecules/pores had an impact on the catalytic performance. A reaction-diffusion model was used to verify the model and suggest an optimal shell thickness that balances diffusion rates.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Jie Liu, Jie Liang, Xianshe Feng, Weijie Cui, Huining Deng, Zhiyong Ji, Yingying Zhao, Xiaofu Guo, Junsheng Yuan
Summary: Electrodialysis is a competitive technology for treating and reclaiming organic saline wastewater, with the mass transfer properties of organic electrolytes being crucial. Two forms of mass transfer through ion exchange membranes, electromigration and diffusion, are affected by ionization, molecular size, and structure. Electromigration dominates over diffusion when current is applied, with inorganic ions affecting dehydration of organic matter and membrane water content. Organic acids and their salts have little impact on the mass transfer properties of inorganic salts.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yunyan Huang, Abraham Sagiv, Raphael Semiat, Hilla Shemer
Summary: Donnan Dialysis (DD) uses ion exchange membranes to selectively transport target ions, and a computational model has been developed to predict ion concentration profiles and transport mechanisms in DD processes. The model has been verified and validated with experimental data, demonstrating its accuracy and reliability.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Engineering, Chemical
Xinxin Wei, Yanling Liu, Junfeng Zheng, Xiaomao Wang, Shengji Xia, Bart Van der Bruggen
Summary: This study critically summarizes the roles of nanomaterials with different dimensions and positions in the construction of thin-film nanocomposite (TFN) membranes. The efficacy of nanomaterial incorporation in tailoring membrane properties and separation performance is analyzed through the evaluation of water permeance, water/salt selectivity, and characterization parameters of TFN membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Mahsa Golmohammadi, Ali Asghar Sabbagh Alvani, Hassan Sameie, Bastian Mei, Reza Salimi, Dirk Poelman, Federico Rosei
Summary: In this study, Ag-doped BiVO4 embedded in reduced graphene oxide (BiVO4:Ag/rGO) nanocomposites were synthesized via hydrothermal processing and used for the preparation of photocatalytic membranes. The nanocomposites showed effective distribution within the polymeric membranes and achieved high efficiency for visible light degradation. The PEG-modified polyimide membrane exhibited higher hydrophilicity and superior photocatalytic performance.
Article
Engineering, Environmental
Ophir Peer-Haim, Idit Shefer, Pratham Singh, Oded Nir, Razi Epsztein
Summary: This study investigates the impact of concentration polarization (CP) on ion-ion selectivity in nanofiltration (NF) membranes. The researchers observed a reversed rejection trend of monovalent cations in NF, which was contrary to the trend of the ions' hydrated size and mobility in solution. By calculating the real rejection of the ions accounting for CP, they found that CP played a major role in the reversed selectivity observed. The study highlights the importance of considering CP in future NF research and suggests minimizing CP to improve solute selectivity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Review
Urology & Nephrology
Farzad Mohajerani, William R. Clark, Claudio Ronco, Vivek Narsimhan
Summary: An understanding of the processes underlying mass transfer is crucial for effective solute removal in dialytic treatment. This review applies engineering principles to characterize the physical mechanisms of diffusion and convection in hemodialysis. The impact of flow rate, dialyzer geometry, and membrane microstructure on these processes is discussed, emphasizing the importance of concepts such as boundary layers, effective membrane diffusivity, and sieving coefficients. The objective is to enhance clinicians' understanding of these factors and improve the prescription and delivery of hemodialysis therapy.
CLINICAL JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY
(2022)
Review
Engineering, Chemical
Tengteng Xie, Feiyang Li, Kuo Chen, Shengchao Zhao, Yuhao Chen, Haixiang Sun, Peng Li, Q. Jason Niu
Summary: Thin-film nanocomposite (TFN) membranes based on polyamide (PA) chemistry are widely used for water purification and desalination due to improved water permeance. However, the aggregation of nanomaterials in the PA layer leads to non-selective defects and limits rejection efficiency. A promising solution is the use of interlayer-based TFN (iTFN) membranes, which contain a nanomaterial interlayer between the porous substrate and PA layer to enhance PA integrity and overcome the trade-off between permeability and selectivity. This review categorizes nanomaterial interlayers into three types and analyzes their effects on interfacial polymerization and water transport. Encouraging results demonstrate that using MOFs interlayer prepared by FAISA method is the most promising way to improve reverse osmosis membrane manufacturing.
Article
Chemistry, Multidisciplinary
Jianping Tang, Yachao Zhang, Yansheng Yao, Nianwei Dai, Zhangsen Ge, Dong Wu
Summary: Aeration is a mass transfer process that disperses gas into a liquid, typically using a microporous device. The surface wettability of the gas/solid interface significantly affects bubble size, which is often overlooked. A superhydrophilic/superhydrophobic Janus aluminum foil fabricated by laser microstructuring improves gas dissolution rate and has broad applications in wastewater treatment, energy production, and aquaculture.
Review
Materials Science, Multidisciplinary
Yongqiang Guo, Hongbin Li, Chao Liu
Summary: Membrane technology has gained increasing attention in the field of separation and desalination due to its efficiency, energy saving, and environmental advantages. However, there is a lack of understanding in mass transfer mechanisms and control methods, especially under confined conditions like reverse osmosis and nanofiltration, which restrict the design and development of membrane materials. This article reviews recent research progress on separation membranes with confined mass transfer effects and analyzes the challenges faced by classical mass transfer models. The review provides guidance for newcomers and researchers in the field and holds reference value for the future development of confined mass transfer membranes.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Alexey V. Melkikh
Summary: The contact melting rate for metals is determined by the presence of a quasi-liquid layer on the surface, leading to diffusion of metal atoms in the liquid phase rather than the solid phase, which affects the characteristic contact melting time.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
Zhiqiang Liu, Jiamin Yuan, Jasper M. van Baten, Jian Zhou, Xiaomin Tang, Chao Zhao, Wei Chen, Xianfeng Yi, Rajamani Krishna, German Sastre, Anmin Zheng
Summary: In zeolite SCM-15, the unique system of continuum intersecting channels plays a key role in the diffusion process of p-xylene, with different effects on diffusion along different directions as molecular uptake increases. This mechanism synergistically improves diffusion in zeolites with continuum intersecting channels.
Article
Chemistry, Physical
Weitong Pan, Xueli Chen, Fuchen Wang, Gance Dai
Summary: This study provides insights into the mass transfer relationship between GC and GDL, emphasizing the coordination of mass transfer area and coefficient for enhanced transport capability, and offers an optimal channel design solution.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Maurilio Magosso, Laura J. W. Hazen, Michel Van den Berg, John Van der Schaaf
Summary: The reduction of tert-butyl hydroperoxide and cumene hydroperoxide with sodium metabisulfite in a rotor-stator spinning-disc reactor was intensified due to the increase in liquid-liquid interfacial area. The reduction rate in the reactor was significantly higher than in a microreactor, with tert-butyl hydroperoxide being reduced much faster than cumene hydroperoxide. This improvement was mainly attributed to the higher solubility of tert-butyl hydroperoxide in the aqueous phase and the linear increase in liquid-liquid interfacial area with rotational speed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Environmental Sciences
Ch Venkata Reddy, Raghava Reddy Kakarla, Bai Cheolho, Jaesool Shim, Mashallah Rezakazemi, Tejraj M. Aminabhavi
Summary: In this study, pure and transition metal ions (Cu)-doped V2O5 nanosheets were synthesized and investigated as photocatalysts for the degradation of organic pollutants. The doped nanosheets showed improved efficiency for degrading methyl blue and rhodamine B under visible light. The incorporation of Cu dopant ions improved catalytic efficacy by separating charge carriers and facilitating their movement. The smaller crystalline size and increased specific surface area of the doped nanosheets also enhanced their photocatalytic activity.
Review
Polymer Science
Elham Valamohammadi, Fatemeh Behdarvand, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy, Zohreh Moghiseh
Summary: Polymeric membranes used in wastewater treatment and desalination show decreased efficiency over time. Polymer nanocomposite membranes (PNMs) with carbon nanotubes (CNTs) can improve permeability and antifouling properties, while also enhancing other physicochemical characteristics.
Article
Automation & Control Systems
Mohammad Amin Kazemi, Mary Pa, Mohammad Nasir Uddin, Mashallah Rezakazemi
Summary: This paper presents an ANFIS approach for recovering missing velocity vectors in fluid flow measurements. The ANFIS is applied to estimate velocity field data and predict fluid patterns within masked regions. It is also used to capture small features in fluid flow by removing vortices behind obstacles. The ANFIS algorithm outperforms ANN and 2D cubic interpolation algorithms in accurately predicting velocity vectors.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Biochemistry & Molecular Biology
Soha Habibi, Toraj Mohammadi, Romina HMTShirazi, Fatemeh Atyabi, Melika Kiani, Amir Atabak Asadi
Summary: In this study, double-layer CS/PVA/mupirocin (CPM) + CS/PVA/bupivacaine (CPB) electrospun nanofiber mats were prepared and crosslinked to optimize their water-resistant and biodegradation properties. The mats exhibited defect-free and interconnected nanofibers, providing a moist environment for efficient wound breathing and repairing. The highly porous mat absorbed wound exudates and allowed air permeability, reducing the chance of bacterial infections.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Polymer Science
Elahe Ahmadi Feijani, Mashallah Rezakazemi
Summary: In this study, a comprehensive model named Takayanagi is proposed to describe the gas performance of tubular filler contained mixed matrix membrane (MMMs) by considering interfacial morphology. The model includes interphase thickness, interphase permeability, and percolation threshold concept to accurately describe the MMM performance. It can also estimate the maximum separation potential of tubular filler. Polyvinylidene fluoride based MMMs containing pristine and acid modified multiwalled carbon nanotube are fabricated and characterized to validate the proposed model. The interphase morphology and contribution of carbon nanotubes in gas permeability are interpreted in details by the model.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zahra Rezaee, Toraj Mohammadi, Omid Bakhtiari
Summary: In this study, nanocomposite membranes with uniform dispersion of amorphous PANI nanofibers were prepared using different concentrations of Pebax 1657 and PANI. The membranes exhibited defect-free structures and lower crystallinities. As the nanofiber loading increased, the CO2 permeability and selectivity of the membranes increased, surpassing the Robeson upper bound limit and approaching the values in 2008. The CO2 permeability and ideal CO2/CH4 selectivity of the nanocomposite membrane loaded with 10 wt.% PANI nanofibers increased to 121.2 Barrer and 33, respectively, showing increments of 64% and 40%.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ali Behboudi, Toraj Mohammadi, Mathias Ulbricht
Summary: Surface-modified silver nanoparticles with different functional groups were synthesized and used as functional fillers in nanocomposite membranes for membrane bioreactors (MBRs). The modifications successfully immobilized the nanoparticles inside the membrane, reducing silver release. The modified nanoparticles exhibited enhanced antimicrobial activity and improved the antifouling properties of the membranes. This led to significant improvements in MBR performance, with increased flux, COD removal, and flux recovery.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Polymer Science
Negin Asadi Arbabi, Mahsa Ostadi, Fariba Sadat Kamelian, Toraj Mohammadi, Soheil Zarghami, Mona Dehghankar
Summary: Membrane bioreactors (MBRs) have gained attention in recent years as biotechnology-based wastewater treatment processes. However, the issue of membrane fouling/biofouling has limited their widespread use. A novel MIL-101(Cr) (MCPs)/polyethersulfone (PES) composite membrane was prepared using the phase inversion method. Adding 0.4 wt% MCPs significantly improved the hydrophilicity and pore characteristics of the membrane, resulting in reduced fouling/biofouling. The optimal composite membrane exhibited improved water flux, fouling resistance, and COD removal efficiency.
Article
Engineering, Chemical
Saeed Seraj, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: For the first time, lycopodium was incorporated into a polyvinylidene fluoride matrix to fabricate a lycopodium/polyvinylidene fluoride membrane for desalination applications. The membrane showed superior performance in terms of flux, salt rejection, water contact angle, and hydrophobicity compared to the neat polyvinylidene fluoride membrane. The presence of lycopodium with its hydrophobic nature and interconnected nano-channels in the membrane structure contributed to the improved flux and salt rejection.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Vempuluru Navakoteswara Rao, Pasupuleti Kedhareswara Sairam, Moon-Deock Kim, Mashallah Rezakazemi, Tejraj M. Aminabhavi, Chi Won Ahn, Jun-Mo Yang
Summary: In order to reduce environmental pollution and carbon-based gas emissions, photocatalytic hydrogen production and sensing applications at ambient temperature are crucial. This research focuses on developing new 0D/1D materials based on TiO2 nanoparticles grown onto CdS hetersturctured nanorods through a two-stage synthesis process. The optimized nanohybrid showed excellent stability and a high photocatalytic hydrogen production rate. Furthermore, the nanomaterial exhibited superior gas sensing performance for NO2 detection at room temperature, with increased sensitivity when activated by UV light. Overall, the 1D/0D CdS@TiO2 material proved to be efficient for both hydrogen production and gas detection.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Thermodynamics
Farhad Ahmadijokani, Hossein Molavi, Salman Ahmadipouya, Mashallah Rezakazemi, Ahmadreza Ghaffarkhah, Milad Kamkar, Akbar Shojaei, Mohammad Arjmand
Summary: The membrane process is a promising technology for CO2 capture due to its environmental-friendly features and low cost. However, the gas selectivity of polyurethane-based membranes is relatively low, which limits their practical application. This review focuses on the key factors affecting the gas transport properties and gas separation performance of these membranes, and summarizes the recent progress in polyurethane-based membranes.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Article
Energy & Fuels
Hiwa Abdlla Maarof, Mohammad Shamsi, Mohammad Younas, Mashallah Rezakazemi
Summary: In this study, a model based on a SAH was developed to enhance air turbulence and improve the thermal performance of a solar collector. Validation experiments were conducted to confirm the accuracy of the model. Ray tracing and FEM simulation techniques were used to analyze the optical and thermal properties of the system. The study found that non-flat plate surfaces contribute to wall-induced turbulence and affect air temperatures.
Article
Green & Sustainable Science & Technology
Samaneh Mashhadikhan, Reyhane Ahmadi, Abtin Ebadi Amooghin, Hamidreza Sanaeepur, Tejraj M. Aminabhavi, Mashallah Rezakazemi
Summary: This review paper explores the chemistry and applications of high-temperature polymers used as membranes for wastewater treatment and water recycling. It emphasizes the importance of thermally stable polymer membranes in purifying wastewater at elevated temperatures and summarizes recent advances in membrane fabrication techniques.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Environmental Sciences
Hossein Molavi, Kamyar Mirzaei, Erfan Jafarpour, Ali Mohammadi, Mohammad Sepehr Salimi, Mashallah Rezakazemi, Megha M. Nadagouda, Tejraj M. Aminabhavi
Summary: Nanodiamonds (NDs) are carbon-based nanoparticles with high surface area, chemical stability, and unique adsorption properties, making them promising for wastewater treatment. This review highlights the application of NDs in adsorption, photocatalytic degradation, and membrane separation, emphasizing their potential, challenges, and future directions in the field.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Engineering, Environmental
Mahdi Sheikh, Victor Valles, Cesar Valderrama, Jose Luis Cortina, Mashallah Rezakazemi
Summary: This study conducted experiments using natural clinoptilolite zeolite (NZ) to investigate the sorption and desorption processes of ammonium (NH4+) in residual effluents. The results showed that NZ had good sorption and desorption capabilities for NH4+ removal and recovery. The study has practical significance for effective treatment of wastewater containing ammonium.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
