Article
Engineering, Chemical
Huimin Tang, Zhiwei Peng, Liancheng Wang, Wenxing Shang, Anton Anzulevich, Mingjun Rao, Guanghui Li
Summary: A facile route for preparing zinc ferrite as a heavy-metal adsorption material from high-zinc EAF dust was proposed in this study. The addition of Fe2O3 was found to increase the formation of zinc ferrite to 94.13%. The purified product showed superior adsorption capacities for Pb (II), Cr (VI), and Cd (II).
Article
Materials Science, Multidisciplinary
A. Maiorova, T. Kulikova, A. B. Shubin
Summary: A new hydrometallurgical scheme has been proposed for extracting iron from metallurgical waste, improving efficiency in the recycling process.
Article
Green & Sustainable Science & Technology
Huimin Tang, Zhiwei Peng, Liancheng Wang, Anton Anzulevich, Mingjun Rao, Guanghui Li
Summary: This study explores the direct conversion of electric arc furnace (EAF) dust into zinc ferrite through roasting with a small amount of Fe2O3, focusing on the influence of roasting temperature on zinc conversion, phase transformation, microstructural evolution, and product magnetic property. The results show that zinc compounds in the dust react with iron components to form zinc ferrite at temperatures up to 1000°C due to favorable thermodynamics and high iron content. However, at temperatures above 1000°C, zinc conversion decreases due to the formation of zinc-containing impurity phases and the volatilization of zinc. After roasting at the optimal temperature of 1000°C for 2 hours, 94.13% of total zinc exists as insoluble zinc in the product, which exhibits good magnetic properties and can be used as a precursor for high-quality ferrite powders.
JOURNAL OF SUSTAINABLE METALLURGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Yuki Nishioka, Xiao Yang, Fumitaka Tsukihashi
Summary: This study investigates the reaction behavior of solid ZnFe2O4 in molten MgCl2-KCl and demonstrates the feasibility of using MgCl2-based molten salt to treat electric arc furnace dust. The experimental results indicate the effective conversion of ZnFe2O4 into ZnCl2 and FeClx (x = 2 or 3) by MgCl2, allowing for the potential separation of zinc and iron. Improving mass transfer in the melt can accelerate the reaction.
ISIJ INTERNATIONAL
(2022)
Article
Engineering, Environmental
Hailin Long, Haoyu Li, Pengcheng Ma, Zhufen Zhou, Huimin Xie, Shaohua Yin, Yongmi Wang, Libo Zhang, Shiwei Li
Summary: The study demonstrates that chlorination roasting is an effective method for treating sintering dust with high heavy metal content. CaCl2 showed superior performance in chlorination, leading to high volatilization rates of Pb and Cl, while the volatilization of PbCl2 is diffusion-controlled with an apparent activation energy of 7.97 kJ/mol.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Wenjuan Zhang, Jianyong Che, Liu Xia, Peicheng Wen, Jun Chen, Baozhong Ma, Chengyan Wang
Summary: Efficient removal and recovery of arsenic from copper smelting flue dust were achieved through a roasting method at a relatively low temperature, with the reduction of As(V) and oxidation of arsenic sulfides simultaneously. The addition of sulfuric acid was found to be favorable for arsenic removal, enhancing the thermodynamic driving force and promoting the transformation of arsenate and arsenic sulfides to As2O3.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
I. Apostol, N. Anghel, F. Doroftei, A. Bele, I. Spiridon
Summary: New adsorbents based on xanthan or esterified xanthan and ferrite-lignin hybrids were characterized through various methods. The adsorption capacity of these adsorbents for Methyl Blue and Basic Fuchsine was determined, with different materials showing varied adsorption capacities. The adsorption process followed multiple isotherm models and was found to be endothermic with disorder at the adsorbent-dye interface.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
A. Ashok, T. Ratnaji, L. John Kennedy, J. Judith Vijaya, R. Gnana Pragash
Summary: The study developed a magnetically recoverable magnesium substituted zinc ferrite nanocatalyst for producing biodiesel from waste cooking oil. The catalyst, synthesized through a microwave assisted combustion process, exhibited high magnetic moment and saturation magnetization properties for efficient magnetic separation and achieving high biodiesel conversion rates.
Article
Engineering, Chemical
Ya-Ting Bao, Zheng-Zheng Liu, Lian-Kui Wu, Guang-Ya Hou, Yi-Ping Tang
Summary: In this study, CuFeOx foam was successfully fabricated as an efficient adsorbent for arsenic removal from aqueous solution. The adsorption behavior, maximum adsorption capacities, and recyclability of CuFeOx foam were investigated, demonstrating its good adsorption performance and recyclability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Wei-an Wang, Guo-xing Qiu, Jian-li Wang, Yun He, Xiao-ming Li
Summary: The effects of CaO, reduction time, and reduction temperature on the migration mechanism and kinetic model of Zn were investigated. Results showed that CaO enhanced the volatilization rate of Zn by promoting the precipitation and enrichment of ZnO on the surface of the Fe-CaO mixture. The reduction steps of ZnFe2O4 with CaO were ZnFe2O4 -> Ca2Fe2O5 -> FeO -> Fe. The volatilization model of ZnFe2O4 reduction shifted from a first-order chemical reaction model to a three-dimensional diffusion model, with a decrease in apparent activation energy from 313.9 to 91.77 kJ/mol, providing favorable conditions for efficient zinc reduction and volatilization.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Chemical
Qi Zhang, Hongying Xia, Yingjie Xu, Guiyu Jiang, Wuchen Cai, Libo Zhang
Summary: A new process of neutralization using zinc roasting dust and ultrasound was proposed to remove arsenic. The process showed a good arsenic removal effect, no introduction of new impurities, and less residue. Ultrasound could effectively destroy the wrapper on the surface of zinc roasting dust, enhance the liquid-solid reaction, and improve the arsenic removal efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zeyu Xiao, Haonan Liu, Xincun Tang, Zanlang Tang
Summary: A method for removing arsenic and recovering antimony from high-arsenic soot was proposed, using a combination of sodium sulfide-sodium hydroxide leaching and aluminum sheet addition. The process effectively achieved high leaching rates for both arsenic and antimony, and achieved a high recovery rate for antimony through the use of lime-precipitation method.
Article
Engineering, Electrical & Electronic
Pragnesh Dave, Riddhi Thakkar, Ruksana Sirach, M. P. Deshpande, Shalini Chaturvedi
Summary: In this work, nano zinc ferrite (ZnF) was synthesized using a coprecipitation method and was characterized using various physical and chemical analysis techniques. The results showed that the presence of nano ZnF decreased the activation energy by approximately 30 kJ/mol but increased the decomposition rate, with zinc ferrite particles measuring 58.8 nm in size.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Tengteng Shi, Jilin He, Rongbo Zhu, Bin Yang, Baoqiang Xu
Summary: Arsenic-containing copper dust is a hazardous waste from copper smelting, hindering sustainable development. A novel process involving vacuum reduction and sulfur roasting can effectively remove arsenic and deposit valuable metals in slag, offering potential application prospects.
Article
Polymer Science
Tawsif Siddique, Rajkamal Balu, Jitendra Mata, Naba K. Dutta, Namita Roy Choudhury
Summary: In recent years, mixed matrix nanofibrous membranes have gained significant attention for water treatment. In this study, functional PSf-based composite NF membranes with GO and ZnO were developed for arsenic removal. The results showed that the incorporation of GO and ZnO improved the membrane performance and increased arsenate removal.
Article
Green & Sustainable Science & Technology
Ali Sabea Hammood, Mojtaba Esmailzadeh, Sayedeh Narjes Hosseini, Saeid Karimi, Irene Calliari, Luca Pezzato, Rob Brittain
Summary: This study investigates the influence of various parameters of friction stir welding on the microstructural features and corrosion properties of 2101 lean duplex stainless steel. It is found that there is a positive linear correlation between the rotational speed and the corrosion resistance.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2023)
Article
Environmental Sciences
F. Faraji, R. Golmohammadzadeh, H. Sharifidarabad, F. Rashchi
Summary: This study successfully recovered zinc, cobalt, and manganese from hazardous waste using biogenic reagents produced by Aspergillus niger.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Siavash Bakhtiarnia, Saeed Sheibani, Abbas Nadi, Eric Aubry, Hui Sun, Pascal Briois, Mohammad Arab Pour Yazdi
Summary: Cu-doped BiVO4 nanoporous thin films were synthesized using reactive magnetron sputtering, and the study found that the Cu content had a significant impact on the structure and photocatalytic activity of the films. The film with 2 at.% Cu exhibited the best photocatalytic performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Shabnam Moradi, Arezou Sadeghpour, Neshat Zahraei, Helena Nourizadeh, Fereshteh Rashchi
Summary: This study presents a facile method for preparing low-temperature gas sensors based on nanostructured Ag-doped and In-doped vanadium pentoxide (V2O5). Both Ag- and In-doped V2O5 exhibited higher sensitivity toward ethanol compared to pure V2O5. The incorporation of metal ions into semiconducting metal oxides holds the potential to enhance the sensitivity of gas sensors.
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Mehrdad Faraji, Saeid Karimi, Mojtaba Esmailzadeh, Luca Pezzato
Summary: The effects of SiC and TiB2 reinforcement particles on the corrosion behaviors of Al5052 surface composites produced with GTAW were investigated. Results showed that the addition of reinforcement particles decreased the corrosion resistance of the composites. Among the composites, AA5052/SiC + TiB2 in 3.5% NaCl solution and AA5052/TiB2 in H2SO4 solution exhibited the lowest corrosion resistance due to microgalvanic couple formation. SEM analysis confirmed the results, and hardness tests showed improved mechanical properties of the composites.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Elham Montakhab, Fereshteh Rashchi, Saeed Sheibani
Summary: The study investigated the photocatalytic activity of modified TiO2 nanotubes (TNTs) for water purification. Three modification methods including Ag nanoparticles (NPs) decoration (TNT-Ag), electrochemical reduction of the TNTs (TNT-H), and a simultaneous combination of these two methods (TNT-Ag-H) were studied. It was found that the combined method resulted in finer Ag NPs with better distribution due to the preferred sites for Ag nucleation provided by the defects formed during electrochemical reduction. The modified TNTs in the TNT-Ag-H sample showed increased SPR and absorption in the visible light region, and exhibited higher photocatalytic performance compared to unmodified TNT samples.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Amirhossein Alizadeh, Saeid Karimi, Fereshteh Rashchi, Saeed Sheibani
Summary: Nickel-bearing zinc plant residues pose a serious environmental threat. This research focuses on nickel deposits from an electrowinning process, where a nickel sulfate electrolyte with high zinc impurity concentration was used. The effects of Ni2+ concentration, pH, temperature, and current density were studied, and the optimal conditions were determined. Furthermore, the influence of zinc impurity concentration on the deposit characteristics was investigated, showing a decrease in current efficiency and the quality of the deposits with increasing zinc concentration.
Article
Chemistry, Physical
Mina Ghorbani, Saeed Sheibani, Hossein Abdizadeh, Mohammad Reza Golobostanfard
Summary: A porous bismuth ferrite (BFO)/reduced graphene oxide (rGO) nanocomposite thin film was successfully fabricated via a facile chemical approach for photoelectrochemical (PEC) water splitting. The BFO nanoparticles with a rhombohedral distorted perovskite crystal structure were grafted onto rGO nanosheets. The BFO/rGO (BGO) thin film exhibited smaller nanoparticles, higher porosity, higher visible absorption, narrower band gap energy, lower recombination rate of charge carriers, and higher photocurrent density compared to the BFO photoanode. The intimate hetero-structure between BFO nanoparticles and rGO nanosheets significantly boosted the charge separation and transfer, contributing to enhanced PEC water splitting efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Amirhossein Hamidi, Pouria Nazari, Sina Shakibania, Fereshteh Rashchi
Summary: This study examined the use of microwave-assisted leaching to recover vanadium (V) and nickel (Ni) from fly ash. The study found that the fly ash sample contained valuable but also hazardous base and heavy metals, with a particle size of 70 micrometers. Conventional leaching tests using sulfuric acid resulted in high recovery rates for V, Ni, and Fe, and complete recovery was achieved by adding hydrogen peroxide. Microwave-assisted leaching showed potential for efficient recovery of V and Ni without the need for additional chemicals, with thermodynamic and kinetic justification provided.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Chemical
M. Amirian Chegeni, Majid Rezaeivala, Saeid Karimi, Avni Berisha
Summary: A novel material with superior corrosion protection capabilities for steel has been synthesized and validated through electrochemical and non-electrochemical testing methods. The reduced form (I3) exhibited exceptional protection against corrosion. The study also explored different absorption mechanisms and found that the three inhibitors adhere to the Langmuir adsorption isotherm with high correlation coefficients.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Green & Sustainable Science & Technology
M. Osali, F. Ahani, H. Khodaei, P. Mohammadi, J. Moghaddam, S. Karimi
Summary: In this study, tartaric acid was found to be an efficient reductant for the leaching of manganese from low-grade pyrolusite ore in an H2SO4 solution. The concentration of tartaric acid and temperature were identified as the key factors influencing the leaching efficiency.
JOURNAL OF SUSTAINABLE METALLURGY
(2023)
Article
Environmental Sciences
Somayeh Alikarami, Ali Soltanizadeh, Fereshteh Rashchi
Summary: The development of Ag/Ru-decorated CdS photocatalysts has shown promise in addressing the environmental pollution crisis. The addition of Ag and Ru noble metals onto CdS photocatalysts resulted in improved optical properties and enhanced photodecomposition of dyes and pollutants under visible light radiation. Furthermore, the experiments demonstrated that the photodecomposition followed a pseudo-first-order kinetic model.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Metallurgy & Metallurgical Engineering
B. Behnajady, J. Yousefi Seyf, S. Karimi, M. Moradi, M. Sohrabi
Summary: Deep eutectic solvents (DES) have potential as environmentally-friendly solvents for recovering metals from spent lithium-ion batteries (LIBs). Experimental and molecular dynamics simulation results showed that the chloride ions in DES can form complexes with lithium, manganese, and nickel ions, facilitating their extraction.
Article
Engineering, Chemical
Somayeh Dashti, Sina Shakibania, Fereshteh Rashchi, Ahmad Ghahreman
Summary: This study investigated the solvent extraction of different groups of rare earth elements (LREE, MREE, and HREE) from a chloride medium using a mixture of Cyanex 572 and Alamine 336. The results showed that the addition of Alamine 336 to Cyanex 572 increased the extraction efficiency of LREEs and MREEs. The analysis suggested that Alamine 336 acted as a proton ion extractor and phase modifier for REECl2+ complexes.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Physical
Nargol Jalali, Amirhossein Rakhsha, Mohammad Nami, Fereshteh Rashchi, Valmor Roberto Mastelaro
Summary: This study investigates the morphological and photocatalytic properties of ZnO/CuO nanocomposites as a function of pH. The results show that increasing pH enhances the recombination rate and lifetime of photogenerated electrons and holes. Additionally, the different morphologies of the nanocomposites provide different active surfaces, affecting their degradation efficiency.