Article
Crystallography
Ya-Jun Wang, Meng-Jie Tao, Jun-Guo Li, Ya-Nan Zeng, Song Qin, Shao-Hua Liu
Summary: This study investigated the mineral phases, chromium leachabilities, and CO2 capture capabilities of EAF slag under different carbonation degrees using the accelerated carbonation method. The results showed that Ca3Mg(SiO4)(2) and Ca2SiO4 were the main minerals with carbonation activity in EAF slag. Furthermore, the leachability of chromium in the EAF slag decreased and then increased with the increase in carbonation ratio, reaching its lowest value at a CO2 uptake ratio of 11.49%.
Article
Engineering, Chemical
Meng-Jie Tao, Ya-Jun Wang, Jun-Guo Li, Ya-Nan Zeng, Shao-Hua Liu, Song Qin
Summary: The study found that under specific reaction conditions, the carbonation ratio of AOD slag can reach up to 66.7%. The carbonation reaction of AOD slag is mainly controlled by internal diffusion, with a calculated apparent activation energy of 22.28 kJ/mol.
Article
Environmental Sciences
Can Cheng, Wenjun Huang, Haomiao Xu, Zhisong Liu, Xianwei Li, Hongzhi Shi, Yongmei Yu, Zan Qu, Naiqiang Yan
Summary: The steel smelting process generates large amounts of CO2 and Ca-containing steel slag (SS), which leads to the waste of Ca resources due to the low value utilization of SS. This study proposes an innovative two-step leaching and carbonation method for efficient leaching, carbon sequestration, and high-value reuse of SS. The method significantly increases the leaching rate of activated Ca and achieves a high CO2 sequestration capacity. This work presents a strategy with potential for recycling SS and reducing carbon emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Xiao-Yong Wang
Summary: This study presents an analysis model of CO2 uptake of slag-blended concrete considering the service stage and the recycling stage. The analysis results show that the total CO2 uptake ratio increases with an increase in slag replacement ratio and water-to-binder ratio. Structural elements, concrete component shape, and crushed concrete diameter can impact the rate of CO2 uptake, but do not affect the total CO2 uptake ratio.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Ekaterina Kravchenko, Chuhao Qin, Zhenzhen Lin, Charles Wang Wai Ng
Summary: Treating steel slag with an environmentally friendly solution of polyvinyl alcohol (PVA) can increase its carbon sequestration capacity, making it a potential solution to reduce global greenhouse gas emissions produced by the construction industry.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Environmental Sciences
Yinbo Luo, Dongfeng He
Summary: Mineral carbonation is essential for the low carbon and sustainable development of the iron and steel industry by effectively treating CO2 and iron and steel slag simultaneously. The technology not only reduces carbon emissions but also improves the quality stability of steel slag and reduces the permeation of heavy metal ions, making it environmentally friendly.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Metallurgy & Metallurgical Engineering
Ya-jun Wang, Ya-nan Zeng, Jun-guo Li, Yu-zhu Zhang, Wei Wang
Summary: The analysis of argon oxygen decarburization slag (AODS) aged for 10 years shows that the slag heap undergoes oxidation and carbonation during long-term aging, leading to element migration and mineralogical evolution. The leachability of chromium in the aged slag varies greatly depending on the location, with bottom slag showing the strongest chromium leachability.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2021)
Article
Engineering, Environmental
Sumit Srivastava, Ruben Snellings, Peter Nielsen, Pegie Cool
Summary: This study explores the possibility of utilizing non-ferrous slags for CO2-mineralization and finds that they have good dissolution behaviors in CO2 environments. Non-ferrous slags have significant advantages as potential sources for CO2-mineralization compared to natural minerals.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Tamas Kurusta, Gabor Mucsi, Sanjay Kumar, Ferenc Kristaly
Summary: Mineral carbonation is a method used to safely and permanently sequester carbon dioxide (CO2) captured from the atmosphere or flue gases. Through chemical reactions, CO2 reacts with calcium, magnesium, sodium, and iron-containing materials to form stable and environmentally harmless carbonate minerals, similar to natural weathering processes. Our research focused on simultaneous mechanical activation and CO2 capture and storage (CCS) using Linz-Donawitz steel slag with a predominant composition of Ca-silicate and oxide phases. Experiments were conducted in a planetary ball mill under 5 bar CO2 pressure in dry and wet (deionized H2O) conditions. The presence of H2O in the system led to finer particle size distribution but reduced the number of active sites. H2O also acted as a promoter in carbonate reactions, initiating silicate surface protonation and enhancing Ca leaching. Wet conditions produced almost three times as much calcite as dry conditions, indicating the potential of nano milling and wet media carbonation in energy reduction and effective use of Ca-silicate wastes in CCS.
Article
Environmental Sciences
Kai Luo, Ke Peng, Jun Li, Zhongyuan Lu, Jun Jiang
Summary: The study found that steel slag inhibits the early hydration of cement, limiting its application in cement-based materials. However, it promotes carbonation in the later stages of the process. Adding more than 10% steel slag inhibits the formation of hydration products, increases the porosity of the mortar, and reduces the compressive strength. The carbonation area and captured CO2 content increase exponentially with an increasing carbonation curing age.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Xiaohui Mei, Qing Zhao, Yi Min, Chengjun Liu, Peiyang Shi, Henrik Saxen, Ron Zevenhoven
Summary: The indirect steel slag-based carbon capture, utilization, and storage process is a promising approach for CO2 emissions reduction and waste valorization. However, there is still a need to enhance the selective extraction efficiency of Ca from slag and predict the Ca extraction potential. In this study, three types of slag were investigated to understand the mineral phase composition, Ca distribution, and extraction behavior.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Zhimin He, Xuyang Shao, Xin Chen
Summary: This study investigates the strength and carbonation degree of a composite cementitious material system consisting of high-content steel slag powder, cement, and metakaolin under CO2 curing conditions. The results show that CO2 curing significantly improves the early strength and carbonation area of the specimens. Microscopic analysis reveals the chemical mechanisms involved in the hydration reactivity and cementitious properties.
Article
Environmental Sciences
Ya-Jun Wang, Jun-Guo Li, Meng-Jie Tao, Xi Zhang, Jian-Bao Zhang, Song Qin, Shao-Hua Liu, Li-Jie Peng, Xiao-Pei Zhang, Ya-Nan Zeng
Summary: This study presents a novel method for producing acicular aragonite using AOD slag while controlling various reaction parameters. The results showed that reaction temperature had the most significant impact on carbonation efficiency, followed by reaction time, stirring speed, CO2 pressure, and liquid-to-solid ratio. Higher temperature and longer reaction duration favored the precipitation of aragonite. Increasing both temperature and the magnesium-to-calcium stoichiometric ratio enhanced aragonite formation and affected its crystal growth orientation and dimensions. The optimal combination of reaction parameters resulted in acicular aragonite with excellent overall uniformity, high aspect ratio, and smooth crystal surface. This study provides valuable insights into the efficient production of acicular aragonite from steel slag while reducing CO2 emissions and promoting resource sustainability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Green & Sustainable Science & Technology
Foquan Gu, Yuanbo Zhang, Zijian Su, Yikang Tu, Shuo Liu, Tao Jiang
Summary: This study reviews the technologies for recovering chromium from chromium-containing SSS slags, including analysis of global chromium resources and consumption, physicochemical characteristics of SSS slags, discussion on various recovery methods, technical challenges, and possible measures to enhance chromium recovery.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Byoungsun Park, Young Cheol Choi
Summary: This study investigated the effect of CO2 curing on the physical properties of foam concrete with porous structures using ST-AOD slag and fly ash. The results showed that CO2 curing can increase the strength of foam concrete, with higher carbon dioxide uptake compared to normal concrete.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Inga Ermanova, Narges Yaghoobi Nia, Enrico Lamanna, Elisabetta Di Bartolomeo, Evgeny Kolesnikov, Lev Luchnikov, Aldo Di Carlo
Summary: This paper demonstrates the high potential of pristine single-cation and mixed cation/anion perovskite solar cells fabricated by sequential deposition. Factors influencing cell performance were compared and optimized to achieve improved efficiency in ambient conditions. The layer by layer deposition of NiOx was found to be crucial for enhancing the efficiency of inverted perovskite solar cells using the sequential deposition method.
Article
Environmental Sciences
Iason Verginelli, Renato Baciocchi
Summary: This study introduces a new method for estimating NSZD rates by calculating O2 and CO2 concentration gradients using a first-order reaction model. The application of nomographs with field data showed potential underestimation of NSZD rates. The new method helps refine NSZD rate estimation and improve risk-based decision making at certain petroleum contaminated sites.
JOURNAL OF CONTAMINANT HYDROLOGY
(2021)
Article
Materials Science, Ceramics
Zhao Liu, Leonardo Duranti, Elisabetta Di Bartolomeo, Nan Yang
Summary: The exsolution of metallic nanoparticles from oxide supports provides a new approach for designing high-performance materials. In this study, Pd nanoparticles with an average size of 100 nm were homogeneously exsolved in compressively strained La0.6Sr0.4Fe0.9Pd0.1O3-delta thin films. The exsolved nanoparticles showed a more stable electrical response in redox cycling, attributed to their dynamic nature. The control of nanoparticle exsolution offers a new way to regulate the electrical response of perovskite oxide semiconductors.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Alessandra Cecconi, Iason Verginelli, Renato Baciocchi
Summary: Radon has been widely proposed as a tracer for non-aqueous phase liquids in soil. This study examined the feasibility of using soil gas data at a distance from the source zone for the application of the radon deficit technique to identify and quantify NAPL contamination. The distance of the soil gas probe from the source zone was found to be the most influential parameter in the migration and distribution of radon in the subsurface.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Electrochemistry
Mariarita Santoro, Elisabetta Di Bartolomeo, Igor Luisetto, A. S. Arico, G. Squadrito, S. C. Zignani, M. Lo Faro
Summary: Investigated the indirect internal dry reforming occurring in the anodic chamber of a SOFC as a method to simplify feed management and improve performance.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Environmental
Philip Gschwend, John MacFarlane, David Jensen, Jaren Soo, Galym Saparbaiuly, Raffaella Borrelli, Fabio Vago, Alessandro Oldani, Luciano Zaninetta, Iason Verginelli, Renato Baciocchi
Summary: The feasibility of using low-density polyethylene (PE) sheets as equilibrium passive soil gas samplers to quantify volatile organic compounds (VOCs) in unsaturated subsurface environments was evaluated. The results showed that PE-based measurements can accurately determine VOC concentrations and overcome the problem of overestimating vapor phase concentrations compared to other methods.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Biodiversity Conservation
Maria Dalma Mangiapia, Iason Verginelli, Renato Baciocchi, Maria Paola Bogliolo, Simona Berardi
Summary: This study examines the procedures used to assess the inhalation risks of workers exposed to chemicals emitted from contaminated environmental matrices or present in the productive cycle. The study finds that the limit values for environmental exposure are more conservative than those for occupational exposure, which can be attributed to the toxicological parameters used in the calculations.
HUMAN AND ECOLOGICAL RISK ASSESSMENT
(2022)
Article
Chemistry, Physical
Martina Marasi, Anna Paola Panunzi, Leonardo Duranti, Nicola Lisi, Elisabetta Di Bartolomeo
Summary: The study investigated the effect of controlled noble metal doping in La0.6Sr0.4FeO3-δ (LSF), with platinum and ruthenium successfully introduced at the B-site, resulting in improved electrocatalytic properties of the perovskite structure. Both doping options showed promising results, with platinum increasing oxygen vacancies to promote the oxygen reduction reaction and reduce polarization resistance, while ruthenium enhanced stability in reducing conditions and promoted the exsolution of metal nanoparticles. All-perovskite cells fabricated with LSFR/LSGM/LSFP exhibited remarkable performances in the intermediate-temperature range when tested with H-2.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
A. Privitera, L. Ruggiero, I. Venditti, U. Pasqual Laverdura, S. Tuti, D. De Felicis, S. Lo Mastro, L. Duranti, E. Di Bartolomeo, T. Gasperi, M. A. Ricci, A. Sodo
Summary: This study encapsulates copper corrosion inhibitors in silica nanocontainers for future application in smart coatings, aiming to reduce chemical usage, environmental dispersion, and direct exposure for operators.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Clarissa Settimi, Daniela Zingaretti, Simone Sanna, Iason Verginelli, Igor Luisetto, Antonello Tebano, Renato Baciocchi
Summary: This study prepared Fe-Cu and Fe-Ni bimetals by disc milling for the dehalogenation of trichloroethylene vapors. The results showed that Fe-Ni bimetals performed better in terms of TCE removal. The findings of this study suggest that ZVI-based bimetals produced by disc milling are effective in the dehalogenation of TCE vapors under partially saturated conditions.
Article
Chemistry, Analytical
Mounika Muduganti, Gabriele Magna, Lorena di Zazzo, Manuela Stefanelli, Rosamaria Capuano, Alexandro Catini, Leonardo Duranti, Elisabetta Di Bartolomeo, Yuvaraj Sivalingam, Sergio Bernardini, Roberto Paolesse, Corrado Di Natale
Summary: This paper investigates capacitive sensors based on films of porphyrinoids functionalized silica nanoparticles as an alternative and advantageous technology for identifying COVID-19 and other pathologies.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Environmental Sciences
Eleonora Nicolai, Roberto Pizzoferrato, Yuliu Li, Simona Frattegiani, Alessandro Nucara, Giulia Costa
Summary: Microplastics (MPs) are a new and pervasive environmental pollutant with potential risks for human health and ecosystems. This study focuses on developing a standardized methodology to monitor MPs in water using a new particle counter, which was calibrated using different types of plastic particles. The presence of MPs in water samples was confirmed using Fourier transform infrared spectroscopy analysis. The novel particle counter shows promise as a quantitative method to measure MP concentrations in water samples.
Article
Chemistry, Physical
Martina Marasi, Leonardo Duranti, Igor Luisetto, Emiliana Fabbri, Silvia Licoccia, Elisabetta Di Bartolomeo
Summary: In the field of innovative energy systems, the reversible solid oxide cells (r-SOCs) have gained recognition due to their high conversion efficiency. This study investigates the use of 5 mol% Ru-doped lanthanum ferrite as a multi-functional electrode, which improves the stability and performance of the cells. The experiments showed high power density and current density, and the reversibility of the cells was successfully evaluated.
JOURNAL OF POWER SOURCES
(2023)
Review
Chemistry, Physical
Marica Falzarano, Alessandra Polettini, Raffaella Pomi, Andreina Rossi, Tatiana Zonfa
Summary: Bioplastics have become a potential substitute for commodity plastics in everyday life, but further research is needed to understand their degradation behavior in controlled and uncontrolled conditions. The complexity of predicting biodegradation degree and kinetics is due to the variety of biopolymers and commercial blends available, requiring specific knowledge of factors affecting the degradation process. This paper summarizes the scientific literature on anaerobic digestion of biodegradable plastics, analyzing research profiles, trends, and recent data on bioplastic degradability under anaerobic conditions.
Article
Nanoscience & Nanotechnology
Gabriele Magna, Mounika Muduganti, Manuela Stefanelli, Yuvaraj Sivalingam, Francesca Zurlo, Elisabetta Di Bartolomeo, Alexandro Catini, Eugenio Martinelli, Roberto Paolesse, Corrado Di Natale
Summary: The paper investigated the gas sensing properties of ZnO nanoparticles coated with porphyrins and corroles under light illumination. The behavior of these sensors in response to volatile compounds and strong electron donors was studied, providing insights into their selectivity and sensitivity. Additionally, a unique gas sensor array data representation using spherical principal component analysis algorithm was introduced to generate chemotopic maps for clustering pure chemical vapors.
ACS APPLIED NANO MATERIALS
(2021)