Article
Green & Sustainable Science & Technology
Stefanos Koutzaris, Maria Xanthopoulou, Asterios Laskaridis, Ioannis A. A. Katsoyiannis
Summary: Arsenic is a natural contaminant in water that poses a risk to human health. The most commonly used method for removing arsenic is coagulation using Fe(III) salts, but this is typically more effective for As(V) removal. This study demonstrates that the addition of H2O2 to Fe(III) coagulation can significantly enhance the removal of As(III), eliminating the need for a pre-oxidation step.
Article
Engineering, Environmental
Yingying You, Shaobin Huang, Moshan Chen, Kimberly M. Parker, Zhen He
Summary: The study demonstrates that a hybrid catalyst composed of alpha-Fe2O3 and SeS2 can effectively promote the regeneration of Fe(II), leading to a significant improvement in pollutant removal efficiency. Hydroxyl radicals are identified as the dominant active species in the H2O2 system, while sulfate radicals are identified as the dominant active species in the PS system.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Agricultural Engineering
Amro Hassanein, Emily Keller, Stephanie Lansing
Summary: This study demonstrates that the use of nanoparticle (NP) mixtures can increase methane production and decrease hydrogen sulfide production during anaerobic digestion, while also showing higher concentrations of NPs in the digestate and increased uptake of NPs by plants.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Chemical
Maxim Muravyov, Anna Panyushkina
Summary: This study reveals the differences in leaching kinetics of a sphalerite concentrate using chemical and biogenic ferric iron. The results show that the commercial reagent of ferric iron allows for the maximum extraction of zinc and copper, while the microbial cell lysis products interact with metal cations, slowing down their reactivity and forming a dense layer of reaction products.
MINERALS ENGINEERING
(2022)
Article
Engineering, Environmental
Xiuheng Wang, Lanqing Li, Shunwen Bai, Zhiguo Yuan, Jingyu Miao, Mengyue Wang, Nanqi Ren
Summary: The study found that dosing ferric chloride can reduce environmental impacts in high H2S situations, while in medium H2S situations it leads to a deterioration of human toxicity and freshwater ecotoxicity. In low H2S situations, dosing ferric chloride has a greater negative impact on the environment.
Article
Geochemistry & Geophysics
Fei Wang, Hongzhan Fei, Lin Wang, Catherine Mccammon, Daniel J. Frost, Tomoo Katsura
Summary: A study found that the Fe oxidation state in Bridgmanite in the lower mantle decreases with increasing temperature, suggesting that the level of charge disproportionation may have been lower in the early Earth's high-temperature conditions. However, if the redox state in the upper lower mantle is buffered by coexisting iron and ferropericlase, the relative oxygen fugacity would have changed very little during long-term cooling.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Environmental Sciences
Yu Li, Yong Feng, Bin Yang, Zequn Yang, Kaimin Shih
Summary: In this study, molybdenum disulfide (MoS2) was found to significantly enhance the activation of peroxymonosulfate (PMS) by Fe(III), leading to the generation of hydroxyl radicals and sulfate radicals as key reactive species for the degradation of sulfadiazine.
Article
Engineering, Environmental
Afang Wang, Yang Shi, Yang Liu, Wei Li, Heng Zhang, Xiaoqiang Dai, Li Luo, Gang Yao, Bo Lai
Summary: The addition of Fe(III) to the Vis/PS system significantly enhances the degradation efficiency of pollutants. Photosensitivity pollutants can boost Fe(III) to produce Fe(II) under visible light irradiation. Fe(III) rapidly combines with LVF in aqueous environments to form Fe(III)-LVF complexes. The production of Fe(IV) in the Vis/PS/Fe(III) system plays a vital role in boosting LVF degradation.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Chemistry, Multidisciplinary
Lei Sun, Jiahui Geng, Mengyou Gao, Dehua Zheng, Zhongxin Jing, Qingyun Zhao, Jianjian Lin
Summary: Fe0.95S1.05 is successfully incorporated into WS2 nanosheets via a one-step solvothermal method, resulting in a hybrid catalyst with enhanced HER performance. The synergistic effect between W- and Fe-based sulfide hybrid catalysts is confirmed, contributing to the improved catalytic activity.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Construction & Building Technology
Erich Wieland, George Dan Miron, Bin Ma, Guoqing Geng, Barbara Lothenbach
Summary: Steel is used as reinforcement in construction materials and is an important part of cement-stabilized waste materials. The corrosion of steel releases dissolved Fe(II/III) species, which can form corrosion products or interact with cementitious materials. The retention of Fe(II/III) by the hydrate in cement paste is crucial for the diffusive transport of aqueous species, while the diffusion of aqueous Fe(II/III) species and the formation of iron corrosion products determine the extension of corrosion front.
MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Environmental
Zhenyuan Ji, Lizhi Chen, Hongquan Yu, Wenyao Dai, Guanxiang Tang, Huali Li, Guoxing Zhu, Aihua Yuan, Xiaoping Shen
Summary: Novel electrode materials with dual functionalization, including Fe2O3 nanosheets and Co9S8 nanoflowers, were successfully synthesized using a facile method. These materials exhibited excellent electrochemical performance, providing a new choice for constructing advanced hybrid supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Mengxiao Zhong, Weimo Li, Junjie Chen, Siyu Ren, Ruikai Qi, Ce Wang, Xiaofeng Lu
Summary: This study presents a simple electrospinning-post treatment route to construct a novel Fe(III)/NiS nanotubular electrocatalyst. The surface reconstruction plays a key role in significantly promoting the oxygen-evolution reaction (OER) performance. The prepared catalyst exhibits a low overpotential and superior durability, making it a promising candidate for water electrolysis.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mahdiyeh Shahi, Farzaneh Hekmat, Saeed Shahrokhian
Summary: In the era of modernization, the development of renewable energies is closely linked to the advancement of high-performance energy storage systems with high energy and power densities. This research focuses on fabricating binder-free positive and negative electrodes for asymmetric supercapacitors that exhibit promising specific capacities and superior cycle stability, showing potential for developing high-performance energy storage systems.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Christopher H. Gammons, Nicholas C. Allin
Summary: Three sets of experiments were conducted to investigate the stability and geological significance of ferric chloride complexes in acidic, Cl-rich solutions at high temperatures. The results revealed that FeCl4- and FeCl2(aq) are the dominant species of Fe(III) and Fe(II) chloride complexes under specific conditions. In addition, FeCl4- exhibits strong oxidizing properties and may play a crucial role in the formation of certain types of hydrothermal mineral deposits.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Nesrin Bugday, Mehmet Nurullah Ates, Ozgur Duygulu, Wentao Deng, Xiaobo Ji, Serdar Altin, Sedat Yasar
Summary: Composite anode materials Fe/Co/S@NPC-T were synthesized by sulfurization and pyrolysis of Fe/Co-based ZIF-12. The materials exhibited good structural properties and rechargeable performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)