Article
Materials Science, Multidisciplinary
Yanming Liu, Shu Jian Chen, Kwesi Sagoe-Crentsil, Wenhui Duan
Summary: This study focused on the detailed microstructural analysis of the hydration process of C3S, a simplified model of cementitious material. It was found that the length of a metastable barrier in the BSE images correlated well with the hydration rate of C3S, and the hydration process caused significant changes in the pore size and profile of C3S pastes, with the critical pore size for limiting hydration identified as 4 μm. Additionally, C3S samples were observed to reach 80% hydration at 7 days, with continuous development of pore structure thereafter despite similar porosity and hydration levels.
MATERIALS CHARACTERIZATION
(2021)
Article
Agricultural Engineering
Paola Santander, Bryan Butter, Estefania Oyarce, Mauricio Yanez, Ling-Ping Xiao, Julio Sanchez
Summary: Water is essential for life on earth, and its decontamination is crucial. Lignin, as an environmentally friendly adsorbent material, can be modified to interact with metal ions, improving the removal efficiency of heavy metal ions.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Green & Sustainable Science & Technology
Keji Wan, Yawen Xiao, Jinjin Fan, Zhenyong Miao, Guoqiang Wang, Shuwen Xue
Summary: This study proposes a method of extracting humic acids from lignite to prepare resin for adsorbing heavy metals from wastewater. The resin exhibits excellent adsorption capacity and shows synergistic or competitive adsorption characteristics in solutions with multiple metal ions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biochemistry & Molecular Biology
Xiang Wang, Jiwei Wang, Landong Jiang, Yibo Jiang
Summary: The heavy metal ions present in industrial wastewater pose a significant threat to human health. To mitigate heavy metal ion pollution, it is crucial to explore an adsorbent that is low-cost, environmentally friendly, exhibits high adsorption capacity, and is easily recyclable. In this study, lignin sulfonate derived from corn stover was modified using a hydrothermal method, resulting in a porous structure that provides more internal adsorption sites for heavy metal ions. The modified lignosulfonate adsorbent efficiently removes heavy metals, particularly Cu2+ and Pb2+, from wastewater, with an adsorption capacity of 450.3 mg/g for Cu2+ and 475.4 mg/g for Pb2+. Additionally, at a concentration of 40 mg/L for Cu2+ and Pb2+, and using a dosage of 0.4 g/L of adsorbent, the adsorption equilibrium is achieved within 60 minutes. Furthermore, the adsorbent achieves removal rates of 83% for Pb, 72% for Cd, 87% for Cu, 36% for Zn, 25% for Mn, 95% for Cr, and 99% for Fe in wastewater within 2 hours. This research demonstrates the development of a practical adsorbent for the removal of heavy metals from real-world wastewater.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Camilla Galletti, Melodj Dosa, Nunzio Russo, Debora Fino
Summary: Many industries discharge wastewater containing heavy metals, which must be treated to remove the pollutants. Activated carbon adsorption is commonly used but is expensive, leading to research on low-cost alternatives like zeolites. Among them, clinoptilolite shows high selectivity for heavy metal ions, especially cadmium.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Tingcong Wei, Fengqi Wei, Jinghong Zhou, Zhiqiang Wu, Chunmei Zhang, Jia Zhuang, Xiaowei Cheng
Summary: The poor mechanical properties of oil-well cementitious materials are mainly due to microstructural coarsening. Xonotlite is formed through the crystallisation reaction of silica powder with C-S-H and the pozzolanic reaction of silica powder with calcium hydroxide. High polymerisation degree of Q(2) and Q(3) Si units improves the high-temperature stability of xonotlite, while the dense structure of xonotlite enhances mechanical properties. Therefore, selecting crystalline silica powder for generating xonotlite is preferred in designing high-performance high-temperature resistant cement-based materials.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Environmental Sciences
Monu Verma, Ingyu Lee, Youngmin Hong, Vinod Kumar, Hyunook Kim
Summary: The trifunctional beta-cyclodextrin-ethylenediaminetetraacetic acid-chitosan polymer synthesized in this study showed excellent adsorption capacity for heavy metals and organic dyes in aqueous solution, with promising kinetics behavior. This indicated its potential application in wastewater treatment.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Melkamu Birlie Genet, Addis Lemessa Jembere, Gedefaw Asmare Tafete
Summary: In this study, sugarcane bagasse activated carbon was utilized as an environmentally friendly adsorbent for the removal of zinc (II) heavy metal from aqueous solutions. The optimum conditions, kinetics, and isotherms of zinc (II) adsorption were investigated. The results showed that the chemically modified sugarcane bagasse activated carbon exhibited high efficiency in removing zinc (II) and the adsorption process was found to be thermodynamically feasible and spontaneous.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
Abdullah Nayeem, Mohd Faizal Ali, Jun Haslinda Shariffuddin
Summary: Inverse vulcanized polysulfides have been proven to be low-cost and effective adsorbents for heavy metal remediation in wastewater. They offer a sustainable solution to the rapid desulfurization problem and outperform traditional commercial adsorbents. This review explored the applications of inverse vulcanized polysulfides in heavy metal removal and highlighted modified synthesis processes for improved uptake ratios. The crucial role of polysulfide adsorbent characteristics and metal ion interactions were discussed. Future prospects for these cost-effective adsorbents with high selectivity to heavy metals were also addressed.
ENVIRONMENTAL RESEARCH
(2023)
Article
Construction & Building Technology
Ludovico Mascarin, Luca Valentini, Gilberto Artioli, Maria Chiara Dalconi, Jean Colombani
Summary: This study aims to accurately describe the dissolution rate of tricalcium silicate (C3S) by implementing a new approach based on holographic interferometry. The protocol involves measuring the pure dissolution rate constant of C3S in supersaturated conditions with respect to C-S-H. By monitoring the release of calcium from a polycrystalline C3S surface in a quiescent solution, the researchers were able to assess the rate law of C3S dissolution.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Agricultural Engineering
Xiangbo Fan, Lili Peng, Xiaohong Wang, Shiqi Han, Lingze Yang, Huili Wang, Chen Hao
Summary: A new type of adsorbent SLS/CMC/BC was successfully synthesized and its adsorption performance was studied. The results showed that this material had high adsorption capacity and good regeneration performance, making it suitable for the removal of pollutants such as Pb2+ and MB.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Environmental Sciences
Makhosazana Masuku, Jemal Fito Nure, Harrison I. Atagana, Ntuthuko Hlongwa, Thabo T. I. Nkambule
Summary: This study successfully synthesized a zinc-doped nickel ferrite biochar nanocomposite for the removal of chromium from wastewater. The nanocomposite exhibited a high surface area, conducive pore volume, and successfully adsorbed up to 95% of chromium. The adsorption process was found to be homogeneous and monolayer, resembling second-order kinetics. Additionally, the adsorption was spontaneous, endothermic, and increased the change in entropy. The nanocomposite showed promising potential for scale-up and the removal of other pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Materials Science, Multidisciplinary
Ming Jin, Wenwei Li, Yuefeng Ma, Jinhui Tang, Jiale Huang, Haoyu Zeng, Guo Yang, Jiaping Liu
Summary: In this study, high-power Xenon radiation was used to simulate real sunlight radiation, and calcium silicate hydrate was prepared by hydration of tricalcium silicate (C3S) with two different water-to-solids (w/s) ratios. The effects of Xenon radiation on the absorbance, compositions, silicate chain structure, pore structure, and micromorphology of C3S hydration products were investigated. The results showed that Xenon radiation reduced the amount of bound water, increased the polymerization of silicate chain, and refined the nanopore structure of calcium silicate hydrate. This research provides valuable insights into the durability of cement-based materials under atmospheric environments with strong solar radiation.
MATERIALS TODAY COMMUNICATIONS
(2023)
Review
Green & Sustainable Science & Technology
R. Sivaranjanee, P. Senthil Kumar
Summary: Carbon spheres are widely recognized for their excellent carbonaceous source and remarkable adsorption capacity. The hydrothermal method is commonly used for synthesizing carbon spheres due to its mild conditions and environmental friendliness. This method is known for its simplicity, moderate reaction conditions, simple procedure, and natural agreeableness.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Jiahe Yan, Keran Li
Summary: A multifunctional, stable, and recyclable adsorbent for treating contaminants with charge diversity in wastewater was successfully prepared through simple one-pot polymerization and ammonolysis, showing excellent adsorption performance and recyclability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Construction & Building Technology
Niall Holmes, Denis Kelliher, Mark Tyrer
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
L. A. Sanchez-Echeverri, Eshmaiel Ganjian, J. A. Medina-Perilla, G. C. Quintana, J. H. Sanchez-Toro, M. Tyrer
Summary: The effects of chemical and mechanical treatments on Guadua angustifolia Kunth (Bamboo) fibres were investigated, showing that a combination of alkali treatment and mechanical refining significantly improves the flexural strength and specific energy of cement composites.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
A. S. Bature, M. Khorami, E. Ganjian, M. Tyrer
Summary: This paper investigated the compressive strength and microstructure of iron-rich, calcined clay based geopolymer mortars activated by two forms of sodium silicate solutions. The strength of mortars activated in a pressure reactor vessel was significantly higher than those activated under normal atmospheric conditions.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Ahmad Ehsani, Eshmaiel Ganjian, Timothy J. Mason, Mark Tyrer, Mark Bateman
Summary: The study found that the application of ultrasound can disturb the early formation of ettringite, promote the formation of amorphous aluminum hydroxide hydrate, and increase the carbonate content in Portland cement systems.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Niall Holmes, Mark Tyrer, Roger West, Aaron Lowe, Denis Kelliher
Summary: This paper introduces the use of PHREEQC geochemical software to analyze cement with various levels of limestone powder, predicting solid phases and pore solution chemistry changes over time. It discusses the potential of using thermodynamics in cement hydration studies and the ongoing work to combine PHREEQC with the HYDCEM model for comprehensive simulation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Arpit Goyal, Eshmaiel Ganjian, Homayoon Sadeghi Pouya, Mark Tyrer
Summary: Chloride-induced corrosion of steel reinforcement is the main reason for premature failure of reinforced concrete structures. Corrosion inhibitors have been proven to be an effective method for reducing corrosion rate, with various types available such as organo-functional silanes. Among the inhibitors tested, organo-functional based inhibitors showed the best efficiency and barrier properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Composites
Kwabena Boakye, Morteza Khorami, Messaoud Saidani, Eshmaiel Ganjian, Andrew Dunster, Ahmad Ehsani, Mark Tyrer
Summary: The availability of some supplementary cementitious materials, especially fly ash, is a concern in Europe due to the projected closure of coal-fired power plants. This study examines the potential use of low-grade kaolinitic clays as a substitute for fly ash in construction. The clay sample was heat-treated and blended with Portland cement, and the physical, chemical, mineralogical, and mechanical characteristics of the blended clay cement were analyzed.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Niall Holmes, Mark Russell, Geoff Davis, Mark Tyrer
Summary: Understanding the formation of hydrate solids becomes increasingly important as the limestone content in commercial cements rises. This study found that although hemicarbonate was observed during hydration, thermodynamic analysis did not predict its formation.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Niall Holmes, Mark Tyrer, Denis Kelliher
Summary: This paper presents a cement hydration model using a thermodynamic database and discrete solid phases to represent C-S-H as a binary solid solution. By using discrete solid phases instead of solid solutions, the model reduces computational demand and analysis time without sacrificing accuracy in predicting stable-phase assemblages and pore chemistry over time.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Niall Holmes, Mark Tyrer, Denis Kelliher
Summary: This paper presents the development of an accurate model using the PHREEQC geochemical software to observe the effects of aggressive agents on the solid phase assemblage of reinforced concrete structures. It also discusses the use of discrete solid phases to account for the solid-solution behaviour of certain compounds, as well as the development of a new thermodynamic description for the vaterite phase.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Jose Manuel Moreno-Maroto, Oscar Merlo, Joel Torres-Serra, Jacinto Alonso-Azcarate, Mark Tyrer, Vicente Navarro
Summary: This study improved the shaking method to disaggregate Wyoming bentonite specimens prepared at different compaction levels. It was found that the stability of compacted material increases with dry density. The size distribution of macrostructural units after disaggregation has the same characteristics as the uncompacted material, regardless of the applied degree of compaction.
APPLIED SCIENCES-BASEL
(2023)
Editorial Material
Chemistry, Multidisciplinary
Mark Tyrer, Jose Manuel Moreno-Maroto
APPLIED SCIENCES-BASEL
(2023)
Article
Construction & Building Technology
Niall Holmes, Mark Tyrer, Denis Kelliher
Summary: This paper presents a thermodynamic model to predict the chemical shrinkage volume during hydration of two cements over time. The model uses the cemdata18 database and a series of discrete solid phases (DSPs) to represent C-S-H. The paper also shows a linear relationship between chemical shrinkage and the overall degree of hydration.
Article
Chemistry, Multidisciplinary
Marco Simoni, Theodore Hanein, Chun Long Woo, Magnus Nyberg, Mark Tyrer, John L. Provis, Hajime Kinoshita
Summary: This study assessed the effect of temperature on a no-combustion decarbonisation process, finding that it is robust and only slightly sensitive to temperature fluctuations within the range of 45-80 degrees C. Water activity plays a crucial role in phase equilibrium, and the energy consumption of the chemical decarbonisation route is potentially four times lower than the conventional calcination route.
Article
Chemistry, Physical
Marco Simoni, Theodore Hanein, Chun Long Woo, Mark Tyrer, Magnus Nyberg, Juan-Carlos Martinez, Nestor I. Quintero-Mora, John L. Provis, Hajime Kinoshita
Summary: This study presents a new process for decarbonising CaCO3 under ambient conditions and sequestering CO2. The results show that lower stirring rates and longer residence times enhance the reaction efficiency. Mass balance analysis reveals that up to 95% of the CO2 embodied in CaCO3 can be sequestered, with a maximum capture rate achieved.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
