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Articles 61 - 90 of 289
Full-Text Articles in Chemical Engineering
Tribological Properties Of Woven Carbon Fiber/Peek Composites From Ambient To 200 °C: Ultra-Low Wear And Performance Evolution, Zheng Bo Xu, Shu Qing Kou, Feng Qiu, Liang Yu Chen, Hong Yu Yang, Jun Nan Dai, Shi Li Shu, Ruifen Guo, Qi Chuan Jiang, Lai Chang Zhang
Tribological Properties Of Woven Carbon Fiber/Peek Composites From Ambient To 200 °C: Ultra-Low Wear And Performance Evolution, Zheng Bo Xu, Shu Qing Kou, Feng Qiu, Liang Yu Chen, Hong Yu Yang, Jun Nan Dai, Shi Li Shu, Ruifen Guo, Qi Chuan Jiang, Lai Chang Zhang
Research outputs 2022 to 2026
The limited mechanical and tribological stability of carbon fiber reinforced PEEK matrix composites at elevated temperatures remains a major obstacle to their widespread application in extreme service environments. In this work, stain-woven carbon fiber (60 wt%) reinforced PEEK composite (CP60) was fabricated via compression molding, and its temperature-dependent mechanical and wear performance was systematically evaluated. Friction and wear behavior were systematically investigated using pin-on-disc tests under dry sliding conditions. Experiments were conducted at two distinct temperatures (room temperature (RT) and 200 °C) with diverse loads (200–400 N) and sliding velocities (0.47 and 0.94 m/s). The composite exhibited lower average friction …
Enhanced Strength And Corrosion Resistance Of Ti-13nb-12ta-10zr-4sn Alloy By Aging Treatment, Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai Chang Zhang
Enhanced Strength And Corrosion Resistance Of Ti-13nb-12ta-10zr-4sn Alloy By Aging Treatment, Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai Chang Zhang
Research outputs 2022 to 2026
This work investigates the effect of aging treatment on the mechanical properties and corrosion resistance of Ti-13Nb-12Ta-10Zr-4Sn (TNTZS) alloy prepared by vacuum arc melting. The as-cast TNTZS alloy was solution-treated and aged at 450°C (HT450) and 550°C (HT550). Microstructural characterization revealed significant changes in the phase proportion (in vol%), which transformed from 64% β, 19% α, and 17% α″ in as-cast condition to 54% β, 13% α, and 33% α″ for HT450 and 55% β, 25% α, and 20% α″ for HT550, respectively. The tensile strength and yield strength increased from 608 and 424 MPa in as-cast condition to 1192 …
Additive Manufacturing And Heat Treatment Of Zero Poisson’S Ratio Self-Expanding Nitinol Stents, Farhana Yasmin, Vafadar, Majid Tolouei-Rad
Additive Manufacturing And Heat Treatment Of Zero Poisson’S Ratio Self-Expanding Nitinol Stents, Farhana Yasmin, Vafadar, Majid Tolouei-Rad
Research outputs 2022 to 2026
Additive manufacturing (AM) has recently gained attention as an effective approach for printing patient-specific, self-expanding Nitinol (NiTi alloy) stents with complex structural designs for the treatment of peripheral arterial disease (PAD). However, achieving the desired phase transformation temperature and superelastic performance remains challenging due to compositional variations, phase imbalance and microstructural inhomogeneities introduced during the printing process. In this study, self-expanding Nitinol stents with a zero Poisson’s ratio (ZPR) structural design were fabricated via laser powder bed fusion (PBF-LB). The printed stents showed no evidence of cracks or structural defects, confirming PBF-LB’s capability to produce mechanically sound stent geometries. However, …
Biopolymer-Based Membranes And Their Application In Per- And Polyfluorinated Substances Removal: Perspective Review, Roham Ghanbari, Ratish Permala, Stefan Iglauer, Masoumeh Zargar
Biopolymer-Based Membranes And Their Application In Per- And Polyfluorinated Substances Removal: Perspective Review, Roham Ghanbari, Ratish Permala, Stefan Iglauer, Masoumeh Zargar
Research outputs 2022 to 2026
Over the past 2 decades, per- and polyfluoroalkyl substances (PFAS) have attracted considerable attention due to their widespread occurrence and adverse effects on both the environment and human health. PFAS possess strong carbon‑fluorine bonds that confer exceptional chemical stability and resistance to natural degradation; their fluorinated chains are highly hydrophobic and oleophobic, while their polar functional groups contribute to amphiphilic behavior and water solubility. Certain PFAS thus pose serious risks to living organisms, especially mammals. Membrane filtration is recognized as a particularly effective technique, achieving removal efficiencies greater than 99 % for long-chain-PFAS (including anionic, cationic, and zwitterionic PFAS molecules). …
Process Intensification Of Essential Oils Extraction Using Instantaneous Controlled Pressure Drop Technology, Muhammad Hassnain, Mohammed Ilyas Khaledi, Muhammad Rizwan Azhar
Process Intensification Of Essential Oils Extraction Using Instantaneous Controlled Pressure Drop Technology, Muhammad Hassnain, Mohammed Ilyas Khaledi, Muhammad Rizwan Azhar
Research outputs 2022 to 2026
Essential oils (EOs) are volatile, hydrophobic compounds derived from plants, widely used in food, cosmetic, pharmaceutical, and fragrance industries for their bioactive potential and associated health benefits. Traditional EO extraction methods are limited by low yields, long processing times, and thermal degradation of sensitive bioactive compounds. Instantaneous Controlled Pressure Drop (CID) technology is an advanced intensification method to overcome these challenges by applying compression-decompression cycles and modifying plant structure to enhance heat and mass transfer. This review provides a comprehensive analysis of CID technology and outlines its mechanism and principles. It compiles global research on CID applied to different plants …
The Microbial Factor In Subsurface Hydrogen Behavior: Implications For Wettability And Interfacial Dynamics, Hamid Esfandyari, Raziallah Jafari Jozani, Aliakbar Hassanpouryouzband, Farhid Hemmatzadeh, Manouchehr Haghighi, Stefan Iglauer, Alireza Keshavarz, Abbas Zeinijahromi
The Microbial Factor In Subsurface Hydrogen Behavior: Implications For Wettability And Interfacial Dynamics, Hamid Esfandyari, Raziallah Jafari Jozani, Aliakbar Hassanpouryouzband, Farhid Hemmatzadeh, Manouchehr Haghighi, Stefan Iglauer, Alireza Keshavarz, Abbas Zeinijahromi
Research outputs 2022 to 2026
Microbial activity plays a significant role in subsurface hydrogen behavior, with implications for underground storage and natural hydrogen systems. This study examines how microbial processes influence the wettability and solid–liquid interfacial characteristics of key subsurface minerals, calcite, dolomite, quartz, and gypsum, in hydrogen-brine-rock systems under realistic subsurface conditions. Wettability directly affects hydrogen distribution, flow dynamics, and trapping, making it a critical factor for both storage and natural recovery applications. Experiments were conducted under high-pressure, high-temperature conditions, with SEM/EDS analysis used to characterize interfacial modifications and mineral surface changes across three scenarios: clean, organic acid-aged, and microbial-aged. Microbial aging consistently increased …
Enhanced Degradation Of Triclosan Using Aerated Hydrodynamic Cavitation: Turbulence-Based Modelling And Economic Evaluation, Mehdi Khiadani, Ensiyeh Taheri, Veena Bobade, Ali Fatehizadeh
Enhanced Degradation Of Triclosan Using Aerated Hydrodynamic Cavitation: Turbulence-Based Modelling And Economic Evaluation, Mehdi Khiadani, Ensiyeh Taheri, Veena Bobade, Ali Fatehizadeh
Research outputs 2022 to 2026
Pharmaceutical and personal care product (PPCP)-contaminated wastewater, particularly with triclosan (TCS), poses a significant environmental concern due to TCS persistence, ecotoxicity, and endocrine-disrupting effects, necessitating the development of efficient and sustainable remediation technologies. In this study, the degradation of TCS using hydrodynamic cavitation coupled with air injection (aerated HC process) is investigated as a green and chemical-free treatment method for wastewater treatment. Initially, the optimum operating conditions of the standalone HC process were determined by varying the inlet pressure and flow rate, which were found to be 2.34 bar and 0.45 L/s, respectively, corresponding to the highest turbulence frequency level …
Experimental Study On Stability, Rheology, And Co2 Storage Capacity Of Polymer-Enhanced Foams In Carbonates, Muhammad Mushtaq, Mudassar Mumtaz, Emad W. Al-Shalabi, Waleed Alameri, Georgios N. Karanikolos, Stefan Iglauer
Experimental Study On Stability, Rheology, And Co2 Storage Capacity Of Polymer-Enhanced Foams In Carbonates, Muhammad Mushtaq, Mudassar Mumtaz, Emad W. Al-Shalabi, Waleed Alameri, Georgios N. Karanikolos, Stefan Iglauer
Research outputs 2022 to 2026
Polymer-enhanced CO2 foam (PEF) is an emerging technology that improves gas mobility control in chemical enhanced oil recovery applications. It also has significant potential for storing CO2 in geological formations, which can help mitigate anthropogenic emissions. Traditional surfactant-based foams are often weak and unstable, particularly under the high-salinity and high-temperature conditions commonly found in Middle Eastern carbonate reservoirs. However, adding a small amount of stable polymer to these foams can enhance their stability, rendering them more suitable for harsh environments. This study focuses on designing and thoroughly evaluating a PEF formulation under supercritical CO2 conditions at 95 °C temperature, 1500 …
Interface Engineering And Safety In Solid-State Batteries: Advancing From Human-Centered Insights To Ai-Driven Innovations, Elnaz Karimi, Stefan Iglauer, Muhammad Rizwan Azhar
Interface Engineering And Safety In Solid-State Batteries: Advancing From Human-Centered Insights To Ai-Driven Innovations, Elnaz Karimi, Stefan Iglauer, Muhammad Rizwan Azhar
Research outputs 2022 to 2026
Solid-state batteries (SSBs) represent a transformative advancement in energy storage, offering superior safety, higher energy density and extended cycle life compared to conventional lithium-ion batteries (LIBs). However, challenges related to interface engineering—particularly in ensuring stable electrochemical performance and preventing lithium dendrite formation—have hindered their widespread adoption and can compromise safety. Effective interface engineering is critical for mitigating interfacial resistance, enhancing mechanical stability and preventing thermal runaway, all of which are vital for improving battery reliability. The integration of artificial intelligence (AI) and machine learning (ML) in this context accelerates battery optimization by enabling predictive modelling of interfacial behaviour, material discovery …
Theory And Technology Of Enhanced Coal Seam Gas Production By Integrated Drilling, Hydraulic Punching And Fracturing In Coal Mine: Part 2 Technology, Shiyao Yu, Xianbo Su, Jinxing Song, Qian Wang, Zhenjiang You
Theory And Technology Of Enhanced Coal Seam Gas Production By Integrated Drilling, Hydraulic Punching And Fracturing In Coal Mine: Part 2 Technology, Shiyao Yu, Xianbo Su, Jinxing Song, Qian Wang, Zhenjiang You
Research outputs 2022 to 2026
To enhance the efficiency and cost-effectiveness of coal seam gas extraction in coal mines, this study introduces an integrated approach combining drilling, hydraulic punching, and fracturing technologies. This method optimizes drilling media tailored to specific coal seams and fine-tunes technical parameters during drilling and permeability improvement processes. Furthermore, it clarifies the relationships among the coal breaking rate, discharge of drill cuttings, jet velocity, rotation speed, and displacement. This ensures precise and effective permeability improvement in both soft and hard coal formations. To implement this technology, a set of high-performance drilling tool with a large inner diameter, high pressure resistance, and …
Theory And Technology Of Enhanced Coal Seam Gas Production By Integrated Drilling, Punching And Fracturing In Coal Mine: Part 1 Theory, Shiyao Yu, Xianbo Su, Jinxing Song, Qian Wang, Zhenjiang You
Theory And Technology Of Enhanced Coal Seam Gas Production By Integrated Drilling, Punching And Fracturing In Coal Mine: Part 1 Theory, Shiyao Yu, Xianbo Su, Jinxing Song, Qian Wang, Zhenjiang You
Research outputs 2022 to 2026
Coal seams in China are typically characterized by high coal seam gas content and low permeability, posing challenges for efficient coal seam gas extraction. However, achieving successful boreholes, especially in soft coal formations, remains a challenge. The mechanisms underlying permeability improvement in different coal structures need further exploration. Therefore, this paper is focused on the fundamental principles of permeability improvement in soft coal through hydraulic punching, and in hard coal via hydraulic jet fracturing. Firstly, borehole instability results from a dynamic interplay of four factors: in situ stress, coal structure, mechanical properties of coal with fluid, and drilling technology. While …
Breaking Through The Strength-Ductility Trade-Off Of Lpbf-Produced Ti-Xnb Alloys From Mixed Powders Via Ω-Phase Induced Heterostructure, Jian Bo Jin, Shengfeng Zhou, Huan Yang, Junjie Yang, Zhiguo Zhang, Baisong Guo, Lai Chang Zhang
Breaking Through The Strength-Ductility Trade-Off Of Lpbf-Produced Ti-Xnb Alloys From Mixed Powders Via Ω-Phase Induced Heterostructure, Jian Bo Jin, Shengfeng Zhou, Huan Yang, Junjie Yang, Zhiguo Zhang, Baisong Guo, Lai Chang Zhang
Research outputs 2022 to 2026
Highlights Powder-mixed Ti-35Nb alloy produced by LPBF breaks through the strength-ductility trade-off. The ultimate strength, uniform elongation and Young’s modulus of heterostructured Ti-35Nb alloy are (806 ± 7) MPa, (18.0 ± 1.1)%, and (68 ± 6) GPa, respectively. In-situ laser re-melting improves elemental distribution uniformity in LPBF-produced powder-mixed Ti-xNb alloys. Optimized Nb content induces the phase transformation of β + α′ → β + ω in Ti-xNb alloy. Heterostructured β + ω/β enhances the strength-ductility synergy of Ti-35Nb alloy.
The Significant Impact Of Hot Isostatic Pressing On The Corrosion Behavior Of Ti-6al-4v Alloy Prepared By Electron Beam Powder Bed Fusion, Hongyu Zheng, Yun Bai, Wentao Hou, Zirong Zhai, Lai Chang Zhang, Shujun Li, Rui Yang
The Significant Impact Of Hot Isostatic Pressing On The Corrosion Behavior Of Ti-6al-4v Alloy Prepared By Electron Beam Powder Bed Fusion, Hongyu Zheng, Yun Bai, Wentao Hou, Zirong Zhai, Lai Chang Zhang, Shujun Li, Rui Yang
Research outputs 2022 to 2026
This work investigated the effect of hot isostatic pressing (HIP) on the corrosion behavior of Ti-6Al-4V samples prepared by electron beam powder bed fusion (EB-PBF). After the HIP treatment, the TiO2 content decreased but the growth rate of passivation films increased, leading to increase in internal defect density, thereby degrading the corrosion resistance. Amongst the different factors impacted by HIP including pore defects, β-phase, texture and morphology of α-phase, the morphology of α-phase played a dominant role in determining the corrosion performance of EB-PBF processed alloy.
Nanao/Organocatalyat Sio2/4-(2-Aminoethyl)-Morpholine As A New, Reusable, And Efficacious Catalyst For The Synthesis Of Polyhydroquinolines Derivatives And Antibacterially Active Evaluation, Leila Amiri-Zirtol, Zahra Karimi, Javad Farahbakhsh, Ahmad Gholami, Seyedeh Narjes Abootalebi
Nanao/Organocatalyat Sio2/4-(2-Aminoethyl)-Morpholine As A New, Reusable, And Efficacious Catalyst For The Synthesis Of Polyhydroquinolines Derivatives And Antibacterially Active Evaluation, Leila Amiri-Zirtol, Zahra Karimi, Javad Farahbakhsh, Ahmad Gholami, Seyedeh Narjes Abootalebi
Research outputs 2022 to 2026
In this study, a new nanocomposite comprising 4-(2-Aminoethyl)-morpholine, an organic catalyst, was prepared on the surface of silica. The absence of metal in the catalyst structure contributes to its environmental friendliness. This novel nanocatalyst was used for multi-component reactions (MCRs). Having a nano size for the composite enhances the contact between the raw materials and the catalytic surface, leading to significant advancement in the reaction. The synthesized composite was identified and evaluated using FT-IR, EDX, EDX-Mapping, TGA, XRD, BET, TEM, and FE-SEM analysis. The characteristic analysis confirmed the synthesis of both nano-silica/4-(2-Aminoethyl)-morpholine catalyst and polyhydroquinoline. The composite’s catalytic properties for …
Photocatalytic Performance Of N-Doped Ti3o5 Nano-Catalyst For Phenolic Compounds Removal From Industrial Wastewaters, Mehdi Narimani, Maryam Gonbadi, Mahsa Navabi, Fatemeh Khezri-Shooshtari, Amin Ale Ebrahim, Mohammad Mahdi Zerafat
Photocatalytic Performance Of N-Doped Ti3o5 Nano-Catalyst For Phenolic Compounds Removal From Industrial Wastewaters, Mehdi Narimani, Maryam Gonbadi, Mahsa Navabi, Fatemeh Khezri-Shooshtari, Amin Ale Ebrahim, Mohammad Mahdi Zerafat
Research outputs 2022 to 2026
This study is focused on the synthesis and evaluation of TiO2 and N-doped Ti3O5 for the photocatalytic degradation of phenol as a noxious substance commonly present in the industrial process effluents with harmful effects on human and the environment. The research addresses the critical environmental challenge posed by phenol-contaminated effluents from petrochemical industries. Leveraging Response Surface Methodology with Box-Behnken design, 17 experiments were conducted to analyze the impact of independent variables such as photo-catalyst dosage, pH, and irradiation time on degradation efficiency. Notably, the average crystallite sizes were determined as 20 nm for TiO2 and 58.3 nm for N-doped Ti3O5. …
Performance Study Of A Woody Downdraft Gasifier: Numerical Investigation And Experimental Validation, Md Sanowar Hossain, Showmitro Bhowmik, Mujahidul Islam Riad, Md Golam Kibria, Barun K. Das, Sanjay Paul
Performance Study Of A Woody Downdraft Gasifier: Numerical Investigation And Experimental Validation, Md Sanowar Hossain, Showmitro Bhowmik, Mujahidul Islam Riad, Md Golam Kibria, Barun K. Das, Sanjay Paul
Research outputs 2022 to 2026
Biomass gasification is an established and widely utilized renewable energy system. The research work aims to develop and construct a downdraft gasifier to investigate gasifier performance. The gasifier’s performance and cold gas efficiency were calculated for three volumetric airflow rates: 7.16 m3/h, 5.97 m3/h, and 4.78 m3/h. The efficiency was found maximum of 69.6% for an airflow rate of 7.16 m3/h. The oxidation zone and neck region of the gasifier reactor had the maximum recorded temperatures of 845 °C and 823 °C for Swietenia macrophylla (SM) and Mangifera indica (MI), respectively. A two-dimensional computational fluid dynamics (CFD) model for a …
Design Of Tertiary Z-Scheme Cuo–Zno@Mxene Photocatalyst With Superior Visible-Light Activity For Decomposition Of Nanoplastics, Ahmad Najafidoust, Javad Farahbakhsh, Roham Ghanbari, Mohadeseh Najafi, Alireza Keshavarz, Stefan Iglauer, Masoumeh Zargar
Design Of Tertiary Z-Scheme Cuo–Zno@Mxene Photocatalyst With Superior Visible-Light Activity For Decomposition Of Nanoplastics, Ahmad Najafidoust, Javad Farahbakhsh, Roham Ghanbari, Mohadeseh Najafi, Alireza Keshavarz, Stefan Iglauer, Masoumeh Zargar
Research outputs 2022 to 2026
Plastic pollution has resulted in the widespread accumulation of nanoplastics (NPs) in aquatic environments, highlighting the need for innovative remediation strategies. In this study, a tertiary z-scheme CuO–ZnO/MXene nanocomposite was developed for the visible-light-assisted degradation of polyethylene-based NPs. ZnO particles were doped with 8 % CuO to form a p-n type heterojunction, and the resulting CuO–ZnO nanoparticles were anchored onto two-dimensional MXene sheets through a sono-precipitation dispersion method, forming a ternary z-scheme photocatalyst with enhanced surface area. The composite exhibited a low electron-hole recombination rate and a tunable band gap (~2.55 eV), enabling efficient visible-light absorption. Under visible light irradiation, …
Harnessing The Power Of Amphoterically Modified Chitosan Coagulants For Enhanced Polyester Microplastic Fibre Removal From Water, Nimesha Thathsarani, Mohadeseh Najafi, Mehdi Khiadani, Muhammad Rizwan Azhar, Masoumeh Zargar
Harnessing The Power Of Amphoterically Modified Chitosan Coagulants For Enhanced Polyester Microplastic Fibre Removal From Water, Nimesha Thathsarani, Mohadeseh Najafi, Mehdi Khiadani, Muhammad Rizwan Azhar, Masoumeh Zargar
Research outputs 2022 to 2026
Microplastic fibre (MPF) is the dominant type of microplastic present in water treatment plants’ influent. Coagulation–flocculation followed by sedimentation effectively removes microplastics during pre-treatment; however, conventional inorganic coagulants produce high sludge volume, causing secondary pollution. Chitosan offers a greener alternative but is limited by poor solubility and low molecular weight. In this study, two amphoteric modifications were successfully incorporated into Chitosan, including CMC-CTA, synthesised by modifying carboxymethyl Chitosan (CMC) with 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CTA); and CMC-g-PDMC, synthesised by grafting poly[(2-methacryloyloxyethyl) trimethyl ammonium chloride] (PDMC) onto CMC. Their coagulation performance for MPF removal was assessed by turbidity measurement. The effects …
Influence Of Organic Matter And Mineral Composition On Carbonate Source Rock Wettability: Implications For Co2 Geostorage, Muhammad Usman, Nurudeen Yekeen, Muhammad Ali, Mujahid Ali, Alireza Keshavarz, Stefan Iglauer, Volker Vahrenkamp
Influence Of Organic Matter And Mineral Composition On Carbonate Source Rock Wettability: Implications For Co2 Geostorage, Muhammad Usman, Nurudeen Yekeen, Muhammad Ali, Mujahid Ali, Alireza Keshavarz, Stefan Iglauer, Volker Vahrenkamp
Research outputs 2022 to 2026
Wettability is critical in determining carbon dioxide (CO2) behavior during geological sequestration in unconventional reservoirs. Unconventional reservoirs are compositionally heterogeneous, affecting CO2 plume migration, containment security, and storage capacity during geological sequestration. Previous studies on CO2 storage in unconventional reservoirs have primarily attributed to changes in organic matter content; however, this study examines how variations in the mineralogical and organic matter content combined affect wettability in CO2/brine systems under subsurface conditions. Three samples with varied mineralogy and TOC content were selected from a well drilled in Jordan source rocks—an immature analog of marine-derived, carbonate-dominated, Type IIS source rocks. Samples were …
Factors Influencing The Effectiveness Of Machine Learning Algorithms In Predicting Raw Wastewater Characteristics: An Analysis Based On Weekly Field Data, Hoda Khoshvaght, Ratish Ramyad Permala, Amir Razmjou, Mehdi Khiadani
Factors Influencing The Effectiveness Of Machine Learning Algorithms In Predicting Raw Wastewater Characteristics: An Analysis Based On Weekly Field Data, Hoda Khoshvaght, Ratish Ramyad Permala, Amir Razmjou, Mehdi Khiadani
Research outputs 2022 to 2026
Accurate prediction of raw wastewater characteristics can reduce laboratory costs, enable optimized chemical dosing, and improve the overall efficiency of wastewater treatment plant (WWTP) operations. This study evaluates machine learning (ML) models as a fast, sustainable, and cost-effective alternative for predicting Biochemical Oxygen Demand (BOD) and Ammonia Nitrogen (NH4+-N) in raw wastewater. Seven ML algorithms, including tree-based, neural, and regression approaches, were trained using standard wastewater indicators, including organic load, nutrient levels, and pH, with hyperparameters tuned via grid search cross-validation. Model performance was evaluated using correlation-based (R2) and error-based metrics (RMSE, MAE, MAPE) to ensure …
Soft Sensing Of Biological Oxygen Demand In Industrial Wastewater Using Machine Learning Models, Muhammad Hassnain, Sarada M.W. Lee, Muhammad Rizwan Azhar
Soft Sensing Of Biological Oxygen Demand In Industrial Wastewater Using Machine Learning Models, Muhammad Hassnain, Sarada M.W. Lee, Muhammad Rizwan Azhar
Research outputs 2022 to 2026
Traditional methods for determining biological oxygen demand (BOD) from industrial water resource recovery facilities (WRRFs) are time-consuming and often impractical for real-time process control. This study explores the application of machine learning (ML) and artificial intelligence (AI) models for the prediction of final effluent BOD (F-BOD) based on physicochemical and operational parameters by leveraging nineteen years of historical laboratory and instrumentation data from the WRRF of an essential oil manufacturing plant. The predictions from these models are then used to simulate the process dynamics, assessing the optimal operational boundary conditions for all input parameters at which the target (F-BOD) falls …
Membrane Fouling Dynamics And Flux Optimization In The Ultrafiltration Of Chlorella Sp. Mur 269 And Dunaliella Salina Cs 744/01, Victor Okorie Mkpuma, Mohadeseh Najafi, Javad Farahbakhsh, Masoumeh Zargar, Navid Reza Moheimani, Houda Ennaceri
Membrane Fouling Dynamics And Flux Optimization In The Ultrafiltration Of Chlorella Sp. Mur 269 And Dunaliella Salina Cs 744/01, Victor Okorie Mkpuma, Mohadeseh Najafi, Javad Farahbakhsh, Masoumeh Zargar, Navid Reza Moheimani, Houda Ennaceri
Research outputs 2022 to 2026
Membrane filtration has emerged as a viable technique for microalgal dewatering. However, fouling constraints limit their large-scale implementation. In this research, the fouling patterns during ultrafiltration of Chlorella sp. and Dunaliella salina were investigated using both dead-end and crossflow filtration modules. Chlorella sp. filtration in the dead-end module revealed an initial flux of 72.02 L.m−2.h−1 in the first cycle, which rapidly decreased to 19.18 L.m−2.h−1 within 30 min. In the second and third cycles, the initial flux exhibited decreases of 23 % and 50 %, respectively. Chlorella sp. demonstrated lower fouling than D. salina …
Biomass Materials And Their Application In 4d Printing, Zhongda Yang, Jian Li, Yanling Guo, Yangwei Wang, Wen Zhao, Wei Zhao, Yanju Liu, Laichang Zhang
Biomass Materials And Their Application In 4d Printing, Zhongda Yang, Jian Li, Yanling Guo, Yangwei Wang, Wen Zhao, Wei Zhao, Yanju Liu, Laichang Zhang
Research outputs 2022 to 2026
Four-dimensional (4D) printing technology is a revolutionary development that produces structures that can adapt in response to external stimuli. However, the responsiveness and printability of smart materials with shape memory properties, which are necessary for 4D printing, remain limited. Biomass materials derived from nature have offered an effective solution due to their various excellent and unique properties. Biomass materials have been abundant in resources and low in carbon content, contributing to the then-current global green energy-saving goals, including carbon peaking and carbon neutrality. This review focused on different sources of biomass materials used in 4D printing, including plant-based, animal-based, and …
Defective Mil-88b(Fe) Metal-Organic Frameworks: Peculiar Photocatalysts For Enhanced Degradation Of Organic Pollutants, Samira Sadeghi, Ahmad Najafidoust, Seyedeh Zahra Haeri, Masoumeh Zargar
Defective Mil-88b(Fe) Metal-Organic Frameworks: Peculiar Photocatalysts For Enhanced Degradation Of Organic Pollutants, Samira Sadeghi, Ahmad Najafidoust, Seyedeh Zahra Haeri, Masoumeh Zargar
Research outputs 2022 to 2026
Environmental pollution, particularly water contamination from organic compounds like synthetic dyes, poses a major global challenge. In this study, defective MIL-88B(Fe) MOFs under varying solvothermal conditions (70–150 °C) for 12 and 24 h were synthesized to enhance methylene blue (MB) and methyl orange (MO) dye degradation. The MOF synthesized at 100 °C for 24 h showed the highest efficiency, achieving 97 % and 40 % degradation of MB and MO, respectively, in 60 min due to increased porosity, surface area, and optimized crystal growth along the [100] direction. A 24-h synthesis produced well-formed particles with the highest surface area and …
Recent Advances In The Design Principles Of Lithium Selective Membranes, Shayan Abrishami, Huan Xiao, Mohsen Asadnia, Ze Xian Low, Amir Razmjou
Recent Advances In The Design Principles Of Lithium Selective Membranes, Shayan Abrishami, Huan Xiao, Mohsen Asadnia, Ze Xian Low, Amir Razmjou
Research outputs 2022 to 2026
The growing demand for lithium in energy storage applications has intensified the need for efficient lithium extraction technologies, with membrane processes emerging as a promising approach. Among various membrane technologies, nanostructured membranes with precisely engineered channels have shown exceptional potential for selective lithium extraction due to their ability to control ion transport at the molecular level. This review provides a comprehensive analysis of the fundamental design principles governing lithium-selective membranes, with a specific focus on nanochannel-based systems. We examine the critical parameters that influence lithium selectivity, including surface charge distribution, nanochannel dimensions, morphology, and wettability, while exploring how these factors …
A Comprehensive Review On The Recovery Of Lithium From Lithium-Ion Batteries And Spodumene, Asad Ali, Sadia Afrin, Abdul Hannan Asif, Yasir Arafat, Muhammad Rizwan Azhar
A Comprehensive Review On The Recovery Of Lithium From Lithium-Ion Batteries And Spodumene, Asad Ali, Sadia Afrin, Abdul Hannan Asif, Yasir Arafat, Muhammad Rizwan Azhar
Research outputs 2022 to 2026
The growing demand for Lithium-Ion batteries (LIBs) for use within varied electronics and electric vehicles (EVs) has raised concerns about the sustainability of lithium extraction from natural deposits. This study provides a comprehensive comparison of lithium recovery through mining of spodumene deposits, and the recovery of lithium from used batteries via recycling, in terms of technological, economic and environmental impacts. Lithium recovered through mining and refining operations prompt significant land disruption and soil contamination and possess large ecological, water and carbon footprints. Contrastingly, lithium recovered through battery recycling undergoes successive heat and chemical treatments, leading to waste minimisation and a …
Temperature-Dependent Properties Of Cu-Doped Znte Thin Films Deposited On Slg Substrates Via Rf Magnetron Sputtering And E-Beam Techniques, Sherif Salah, Camellia Doroody, Fazliyana ‘Izzati Za'abar, Zheng Jie Feng, Prajindra Sankar Krishnan, Ahmad Wafi Mahmood Zuhdi, Muhammad Najib Harif, Nur Irwany Ahmad, Yap Boon Kar, Mohammad Nur-E-Alam
Temperature-Dependent Properties Of Cu-Doped Znte Thin Films Deposited On Slg Substrates Via Rf Magnetron Sputtering And E-Beam Techniques, Sherif Salah, Camellia Doroody, Fazliyana ‘Izzati Za'abar, Zheng Jie Feng, Prajindra Sankar Krishnan, Ahmad Wafi Mahmood Zuhdi, Muhammad Najib Harif, Nur Irwany Ahmad, Yap Boon Kar, Mohammad Nur-E-Alam
Research outputs 2022 to 2026
Copper doping in zinc telluride (ZnTe) thin films has been extensively studied for optoelectronic applications; however, challenges remain in optimizing temperature-dependent diffusion while minimizing defect-related emissions. Although numerous studies have explored Cu-doped ZnTe, comprehensive investigations using electron-beam (E-beam) evaporation remain limited, especially concerning its influence on diffusion dynamics, defect formation, and electrical properties. This study systematically examined Cu-doped ZnTe films fabricated via E-beam evaporation with a fixed 50 nm Cu layer deposited at three substrate temperatures (RT, 150 °C, and 300 °C), followed by rapid thermal annealing (RTA) at 100 °C and 200 °C for 1 h under a nitrogen …
Electromagnetic Treatment Enhancing Performance Of Metal Materials: A Review, Lechun Xie, Hongxin Sun, Yan Wen, Lin Hua, Lai Chang Zhang
Electromagnetic Treatment Enhancing Performance Of Metal Materials: A Review, Lechun Xie, Hongxin Sun, Yan Wen, Lin Hua, Lai Chang Zhang
Research outputs 2022 to 2026
Due to the limitations of traditional metal processing methods, including high energy consumption, slow process dynamics and possible introduction of defects, electromagnetic treatment has been highlighted as a more environment-friendly and energy-efficient alternative, which can efficiently and selectively enhance material properties. This article summarizes the latest advances in electromagnetic treatment of metal materials to enhance material performance and outlooks the directions in electromagnetic treatment technology. It delves into electromagnetic field applications in manipulating the microstructure and properties. First, it explores the potential mechanisms of interaction between electromagnetic fields and metal materials, including thermal and athermal effects. Afterwards, it provides a …
Thermal Fatigue Failure Mechanisms And Enhancement Strategies Of Die Steel, Chuan De Li, Hong Yu Yang, Bai Xin Dong, De Li Chen, Shi Li Shu, Feng Qiu, Qi Chuan Jiang, Lai Chang Zhang
Thermal Fatigue Failure Mechanisms And Enhancement Strategies Of Die Steel, Chuan De Li, Hong Yu Yang, Bai Xin Dong, De Li Chen, Shi Li Shu, Feng Qiu, Qi Chuan Jiang, Lai Chang Zhang
Research outputs 2022 to 2026
Thermal fatigue failure is the core issue that restricts the development of die-casting technology, and it directly impacts the lifespan of the dies and the resulting economic benefits. This article reviews the fundamental mechanisms of thermal fatigue failure of die steels, classifies the potential failure mechanisms and discusses them in detail. This article examines the pivotal factors that affect the thermal fatigue resistance of die steels from four perspectives: alloying elements, processing techniques, microstructure, and inherent properties. On this basis, this article summarizes the advantages and disadvantages of various methods to enhance thermal fatigue resistance, such as alloying element optimization, …
The Influence Of Surface Textural Properties And Adsorption Temperature On H2 Adsorption And Storage Performance Of Mil-88b(Fe) Mofs, Tawanda Matamba, Samira Sadeghi, Hussein Rasool Abid, Masoumeh Zargar, Alireza Keshavarz, Stefan Iglauer
The Influence Of Surface Textural Properties And Adsorption Temperature On H2 Adsorption And Storage Performance Of Mil-88b(Fe) Mofs, Tawanda Matamba, Samira Sadeghi, Hussein Rasool Abid, Masoumeh Zargar, Alireza Keshavarz, Stefan Iglauer
Research outputs 2022 to 2026
To advance the establishment of a stable H2 economy we need to solve the issue regarding its storage. The physicochemical properties of Metal Organic Frameworks (MOFs) make them suitable for H2 storage. Therefore, here, we synthesized two Iron-based MOFs (12-MIL-88 B(Fe), 24-MIL-88 B(Fe) at different reaction times (12 h and 24 h), to investigate the relationship between adsorption temperature and pressure with the material's surface textural properties towards H2 storage (at 30 °C, 0 °C, −78.5 °C, and −196.15 °C and from vacuum pressure to 55 bar). Results showed that at 30 °C and 0 °C adsorption temperature, H2 adsorption …