Article
Green & Sustainable Science & Technology
Chengcheng Fan, Baomin Wang, Hongmei Ai, Yi Qi, Ze Liu
Summary: The study found that using coal fly ash-based geopolymer for MSWI fly ash S/S treatment performed better than Portland cement, with higher compressive strength and higher immobilization rates for heavy metals.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Chen Sun, Weizhe Ge, Yuying Zhang, Lei Wang, Yan Xia, Xiaoqing Lin, Qunxing Huang, Shengyong Lu, Daniel C. W. Tsang, Jianhua Yan
Summary: In this study, CaO or MgO was used to activate GGBS for stabilization/solidification of hazardous MSWI FA. The formation of reaction products was significantly inhibited by PTEs in CaO-GGBS system, while PTEs had insignificant inhibition in MgO-GGBS system, leading to lower leachabilities of PTEs and higher mechanical strengths. MSWI FA could be effectively recycled by MgO-GGBS binder into blocks with desirable properties.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Mohammad A. Al-Ghouti, Yahya S. Al-Degs, Ayoup Ghrair, Mahmoud Ziedan, Hani Khoury, Jafar I. Abdelghani, Majeda Khraisheh
Summary: This paper investigates the development of stable geopolymers using petroleum fly ash. Detailed characterizations of the petroleum fly ash, extraction of metals, and preparation of geopolymers were conducted to analyze the potential application of petroleum fly ash in geopolymers.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Yikai Liu, Simone Molinari, Maria Chiara Dalconi, Luca Valentini, Maurizio Pietro Bellotto, Giorgio Ferrari, Roberto Pellay, Graziano Rilievo, Fabio Vianello, Gabriella Salviulo, Qiusong Chen, Gilberto Artioli
Summary: A geochemical model combined with parametric fitting techniques was used to investigate the solidification/stabilization mechanisms of Pb-rich pyrite ash in ordinary Portland cement and calcium aluminate cement. The study revealed that ettringite and calcium silicate hydrates have strong affinities for Pb under alkaline conditions. When the hydration products are unable to stabilize all the soluble Pb, part of it may be immobilized as Pb(OH)2. Hematite from pyrite ash and newly-formed ferrihydrite, along with anglesite and cerussite precipitation, are the main controlling factors of Pb under acidic and neutral conditions. This work provides valuable insights for the development of more sustainable mixture formulations in solid waste remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Hao Zhang, Zehua Ji, Jun Cui, Yuansheng Pei, Shuocheng Gao
Summary: This study developed one-part fly ash-based geopolymers using landfill leachate concentrate (LLC) as the only solvent. The results showed that the addition of solid alkali activator significantly increased the LLC treatment capacity and the high-salinity LLC promoted the substitution of Al for Si, improving the compressive strength of the geopolymers. Leaching experiments demonstrated the excellent stability and high S/S rates of the prepared geopolymers for organic matter and NH3-N, reducing acute biological toxicity. Microscopy tests revealed the main component of the fly ash-based geopolymers after the addition of LLC was sodium aluminosilicate hydrate (N-A-S-H) gel.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Abubaker Ahmed Mohamed Salih Mohamed, Junping Yuan, Mohammed Al-Ajamee, Yi Dong, Yuzhe Ren, Theogene Hakuzweyezu
Summary: The aim of this study is to investigate the effects of sawdust ash (SDA) and high calcium fly ash (HCFA) on the geotechnical characteristics of expansive soil (ES). Tests were conducted to examine the physical and mechanical properties of these pozzolanic materials and their potential for enhancing ES. The results showed that increasing the mixture and cement content improved ES properties by reducing the liquid limit and plasticity index while increasing the plastic limit. The addition of 1% cement to the 10% HCFA-SDA combination resulted in the maximum strength improvement of ES.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Marie Collin, Dale P. Prentice, Ross A. Arnold, Kirk Ellison, Dante A. Simonetti, Gaurav N. Sant
Summary: The study investigated the use of fly ash for treating highly concentrated brines, finding that reactivity and phase assemblages are generally unaffected at low ionic strengths, but show specific compounds abundance at higher ionic strengths. Combining calcium salts with NaCl significantly reduces fly ash reactivity, while it remains essentially unchanged with CaCl2.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Engineering, Environmental
Chengcheng Fan, Baomin Wang, Yi Qi, Ze Liu
Summary: A novel binder system using MgO and silica fume was developed for solidification/stabilization of MSWI fly ash. The blend showed good compressive strength and controlled leaching behavior of heavy metals, providing a promising method for immobilization of heavy metals in MSWI fly ash.
Article
Construction & Building Technology
Lori E. Tunstall, George W. Scherer, Robert K. Prud'homme
Summary: This study used surface tension measurements to quantify the adsorption of air-entraining agents onto cement and fly ash. The results show that in carbon-contaminated ash in cement pore solution, fly ash particles dominate adsorption rather than the carbon itself. The research suggests that while carbon contributes to air loss through hydrophobic adsorption, its main interference is by shielding surfactant-coated fly ash particles from participating in air development and Pickering stabilization.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Construction & Building Technology
Shiyu Luo, Shujie Zhao, Pengpeng Zhang, Jing Li, Xiao Huang, Binquan Jiao, Dongwei Li
Summary: This study successfully synthesized an alkali-activated cementitious material (AAFL) based on co-disposal of MSWI fly ash and lead-zinc smelting slag (LZSS), which are solid wastes containing heavy metals. The experimental results showed that the compressive strength of AAFL increased with the SiO2/Na2O molar ratio and alkali content, but decreased with the liquid-solid ratio and initial curing temperature. The immobilization ratios of Zn, Pb and Cu in AAFL were all above 97%, and heavy metals were mainly immobilized through physical encapsulation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Ana Paula Furlan, Andry Razakamanantsoa, Harifidy Ranaivomanana, Ouali Amiri, Daniel Levacher, Dimitri Deneele
Summary: This study investigates the efficacy of combining fly ash (FA) with lime or cement, or both, in improving the properties of dredged sediment (DS). The results show that the use of FA leads to a refinement of the microstructure and reduction of macro porosity at early stages, while the long-term densification of the microstructure is attributed to the pozzolanic property of FA. DS stabilized with FA exhibit lower shrinkage and higher mechanical resistance compared to those without FA, especially when FA is mixed with cement.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Marie Collin, Yu Song, Dale P. Prentice, Ross A. Arnold, Kirk Ellison, Dante A. Simonetti, Mathieu Bauchy, Gaurav N. Sant
Summary: This study evaluates the performance of combining two types of fly ash and different additives with two types of brine. The best-performing matrices are determined through experimental results and thermodynamic modeling, and system performance is predicted using a machine learning model.
Article
Construction & Building Technology
Xiaodong Ma, Tingshu He, Yongqi Da, Yike Lin, Yun Feng, Wentao Zhang
Summary: This study evaluated the performance changes and the ability to solidify heavy metals of cement prepared with incineration fly ash after high-temperature treatment. The results showed that incineration fly ash weakened the performance of cement, but it still effectively solidified residual heavy metals.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Environmental
Tianru Li, Baomin Wang, Xiong Zhang, Xiao Han, Yunqing Xing, Chengcheng Fan, Ze Liu
Summary: In this study, a graphene nanoplatelets (GNPs)/municipal solid waste incineration (MSWI) fly ash solidified body was prepared by alkali-activated technology to improve the solidification ability of heavy metals and maximize the utilization of MSWI fly ash. Results showed that adding 0.05 wt% GNPs resulted in the highest compressive strength and the lowest heavy metals leaching concentration in the solidified body. GNPs promoted the conversion of heavy metals into the residual state and the formation of C-(A)-S-H gels.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Xue-ying Yuan, Xin-yue Zhao, Ying-zhou Chen, Zhi-shan Yang, Jin-yan Yang
Summary: This study investigated the effects of different passivating agents on heavy metals in different types of fly ash and found that sulfur-containing organic chemicals and phosphates were effective in chelating these metals at low addition levels. The ternary compound TMT-NaH2PO4-SDD showed excellent chelating ability for Pb and Cd in GF FA, while TMT-Na2S-thiourea was suitable for CFB FA. The chelation rates of Cd and Pb after treatment with the ternary mixture were above 99% and the leaching amount was lower than the standard limits.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Applied
Rukayya I. Muazu, Julia A. Stegemann
FUEL PROCESSING TECHNOLOGY
(2015)
Article
Engineering, Environmental
Anna Bogush, Julia A. Stegemann, Ian Wood, Amitava Roy
Article
Construction & Building Technology
Kell Jones, Julia Stegemann, Judith Sykes, Peter Winslow
CONSTRUCTION AND BUILDING MATERIALS
(2016)
Article
Engineering, Environmental
Amitava Roy, Julia A. Stegemann
JOURNAL OF HAZARDOUS MATERIALS
(2017)
Article
Energy & Fuels
Anna A. Bogush, Julia A. Stegemann, Richard Williams, Ian G. Wood
Article
Geochemistry & Geophysics
Reginald B. Kogbara, Abir Al-Tabbaa, Yaolin Yi, Julia A. Stegemann
APPLIED GEOCHEMISTRY
(2013)
Article
Environmental Sciences
Reginald B. Kogbara, Abir Al-Tabbaa, Julia A. Stegemann
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2014)
Article
Engineering, Environmental
Sunday A. Leonard, Julia A. Stegemann
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE
(2010)
Article
Engineering, Environmental
Sunday A. Leonard, Julia A. Stegemann
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2010)
Article
Engineering, Environmental
Reginald B. Kogbara, Abir Al-Tabbaa, Julia A. Stegemann
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2013)
Article
Environmental Sciences
Reginald B. Kogbara, Abir Al-Tabbaa, Yaolin Yi, Julia A. Stegemann
JOURNAL OF ENVIRONMENTAL SCIENCES
(2012)
Article
Engineering, Environmental
Sunday A. Leonard, Julia A. Stegemann, Amitava Roy
JOURNAL OF HAZARDOUS MATERIALS
(2010)
Article
Engineering, Environmental
C. Lampris, J. A. Stegemann, M. Pellizon-Birelli, G. D. Fowler, C. R. Cheeseman
JOURNAL OF HAZARDOUS MATERIALS
(2011)
Article
Environmental Sciences
Jason Go, Julia A. Stegemann
JOURNAL OF SOILS AND SEDIMENTS
(2012)
Article
Construction & Building Technology
J. A. Stegemann
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
(2014)
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)