Article
Environmental Sciences
Asif Qureshi, Christian Maurice, Bjorn Ohlander
Summary: The study found that mixing waste rocks with fly ash or covering waste rocks with fly ash can increase the leachability of metals in waste rocks and improve the pH value of waste rocks, thereby improving the impact of waste rocks on the environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
C. Righi, I Lancellotti, L. Barbieri, G. M. Kirkelund
Summary: Municipal solid waste incineration fly ash (MSWI FA) contains hazardous heavy metals and soluble salts. This research investigated the use of electrodialytic treatment as a pre-treatment for MSWI FA, and its impact on metakaolin-based geopolymer as an encapsulation matrix. The results showed that geopolymer effectively encapsulated heavy metals, and electrodialytic pre-treatment improved the environmental and mechanical characteristics of the geopolymer.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Engineering, Environmental
Xinyuan Zhan, Gunvor Marie Kirkelund
Summary: The study explored the use of electrodialytic remediation (ED) as a pre-treatment to remove heavy metals from MSWI fly ash before geopolymerization. The pre-treatment increased the reactivity of Si and Si/Al ratio in fly ash. A mixture of 80% coal fly ash and 20% ED treated fly ash with 8 M NaOH was found to have optimal compressive strength in geopolymerization.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Patricia Merdy, Alexandre Parker, Chen Chen, Pierre Hennebert
Summary: The ALTEO company produces a large amount of bauxite residue annually, which is transformed into Bauxaline & REG; through washing and drying. This study explored different ways to recover and reuse this residue, including transforming it into a vegetated soil and using it for mine tailings remediation. The study found that the Bauxaline & REG; can be transformed into modified bauxite residue (MBR) to reduce its alkalinity, salinity, and sodicity. The addition of MBR and limestone significantly reduced emissions from sulfidic mine tailings and promoted vegetation growth.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Green & Sustainable Science & Technology
Justyna Szerement, Alicja Szatanik-Kloc, Renata Jarosz, Tomasz Bajda, Monika Mierzwa-Hersztek
Summary: Zeolites are extensively studied materials for adsorption and ion exchange with wide applications in agriculture and environmental protection. Natural zeolites are widely researched as soil conditioners and fertilizer additives in agriculture, while synthesized zeolites are gaining attention in environmental remediation. Despite numerous studies on zeolites' applications in environmental protection, their full potential is yet to be fully explored.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Zbigniew Kledynski, Agnieszka Machowska, Pawel Falacinski
Summary: This article discusses the flood risk facing agricultural land in Poland and the issues of renovating and repairing flood embankments. The study presents the potential use of fly ash from lignite combustion as a component of hardening slurries, and highlights the beneficial effects of fine fraction fly ash on the properties of the slurry.
Article
Construction & Building Technology
Huiping Song, Xiaoqian Wang, Wensheng Xie, Zichen Di, Fangqin Cheng
Summary: Gas emissions in coal mines pose a serious threat to mine safety. Sealing coatings are an effective method to reduce gas emissions. This study selected fumed silica, polyurethane thickener, and polyurea thickener as rheological additives to improve the viscosity of water-based coatings and prevent coating delamination.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Zhi-Hao Dong, Xiao-Hua Pan, Chao-Sheng Tang, Dian-Long Wang, Rui Wang, Bin Shi
Summary: Bio-carbonation of Reactive Magnesia Cement (RMC) can effectively stabilize sandstone grains. The highest unconfined compressive strength (UCS) of the bio-carbonated sample was up to 5.5 MPa, which was 7.8 times higher than that of the sample stabilized by RMC hydration only. In addition, bacteria concentration and bacteria solution composition also affect the stabilization mechanism.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Chemical
Zesen Zhao, Li Cui, Yanxia Guo, Jianming Gao, Huiquan Li, Fangqin Cheng
Summary: This study demonstrates the potential use of PUF as an adsorbent for Ga(III) recovery in strongly acidic solutions, showing stable adsorption performance and high selectivity. A stepwise process involving Fe(III) removal and Ga(III) adsorption successfully recovered Ga from coal fly ash, with PUF maintaining its adsorption capacity after multiple cycles of use.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Qinghua Han, An Wang, Jinrui Zhang
Summary: This paper investigates the damage mechanism of modifying fly ash-based geopolymers with molybdenum tailings. The results show that introducing molybdenum tailings can significantly improve the flexural strength and deflection of fly ash-based geopolymers, as well as enhance the fracture resistance.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Metallurgy & Metallurgical Engineering
Susanne Nigeus, C. Maurice, J. Lindblom, J. Macsik
Summary: Using non-hazardous industrial residues in mine waste remediation is beneficial for both the mining industry and the providing industry. In this study, green liquor dregs (GLD) from different paper mills were characterized to be used as cover material. The optimal mixture of GLD-amended till was determined for a field application at the Nasliden Mine in Sweden, with the conclusion of 10% GLD-amended till being the optimal recipe.
MINING METALLURGY & EXPLORATION
(2023)
Article
Environmental Sciences
Yiming Wang, Jiangyu Wu, Dan Ma, Hai Pu, Qian Yin, Weiqiang Chen
Summary: The use of cement and fly ash (FA) in cemented tailings backfill (CTB) is a green mining process that reduces backfill mining costs and pollution. This study investigated the effects of FA content and curing time on the strength properties of CTB through mechanical tests and numerical modeling. The results reveal the influence mechanism of different FA contents on the strength property of CTB, providing important insights for improving the recycling of FA and waste residues.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Geochemistry & Geophysics
V Rey, C. A. Rios, L. Y. Vargas, T. M. Valente
Summary: Tailings facilities and associated waters often lead to environmental concerns. This study in Colombia focused on acid mine drainage from gold exploitation. Results showed efficiency of low-cost natural zeolite-rich tuff for treatment of the contaminated water.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2021)
Article
Construction & Building Technology
Jinrui Zhang, Yin Fu, An Wang, Biqin Dong
Summary: This paper systematically researched the mechanisms of molybdenum tailings on fly ash-based geopolymers. The addition of molybdenum tailings improved the fluidity, delayed the setting time, increased the drying shrinkage, and significantly enhanced the bending strength of fly ash-based geopolymers. The results demonstrated that glassy sodium calcium aluminum silicate hydrate (N(C)-A-S-H) gel was the main product, and the addition of molybdenum tailings did not induce the formation of new crystal phases in fly ash-based geopolymers. Moreover, the pore structure of fly ash-based polymers was significantly improved by the addition of molybdenum tailings, leading to reduced cracks and defects and improved microstructure compactness.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Saba Shirin, Aarif Jamal, Christina Emmanouil, Akhilesh Kumar Yadav
Summary: This study investigated the treatment of acid mine drainage (AMD) from abandoned coal mines using fly ash, showing that fly ash has neutralization potential to increase pH and decrease harmful substance concentrations in the drainage. Further assessment is needed to determine the suitability of fly ash for managing AMD pits in coalfields.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Yu Jia, Christian Maurice, Bjorn Ohlander
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2016)
Article
Environmental Sciences
Yu Jia, Peter Nason, Christian Maurice, Lena Alakangas, Bjorn Ohlander
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2015)
Article
Water Resources
Peter Nason, Yu Jia, Christian Maurice, Lena Alakangas, Bjorn Ohlander
MINE WATER AND THE ENVIRONMENT
(2016)
Article
Environmental Sciences
Asif Qureshi, Yu Jia, Christian Maurice, Bjorn Ohlander
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2016)
Article
Environmental Sciences
Yu Jia, Ludwig Ehlert, Cecilia Wahlskog, Angela Lundberg, Christian Maurice
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2018)
Article
Environmental Sciences
Y. Jia, N. Stahre, C. Maurice, B. Ohlander
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2019)
Article
Environmental Sciences
Yu Jia, Christian Maurice, Bjorn Ohlander
ENVIRONMENTAL EARTH SCIENCES
(2014)
Article
Environmental Sciences
Yu Jia, Peter Nason, Lena Alakangas, Christian Maurice, Bjorn Ohlander
ENVIRONMENTAL EARTH SCIENCES
(2014)
Article
Engineering, Environmental
Jimnei Lu, Lena Alakangas, Yu Jia, Jenny Gotthardsson
JOURNAL OF HAZARDOUS MATERIALS
(2013)
Article
Water Resources
Yu Jia, Christian Maurice, Bjorn Ohlander
MINE WATER AND THE ENVIRONMENT
(2015)
Article
Geochemistry & Geophysics
Maria Makitalo, Christian Maurice, Yu Jia, Bjorn Ohlander
Article
Environmental Sciences
Yu Jia, David Stenman, Maria Makitalo, Christian Maurice, Bjorn Ohlander
WASTE AND BIOMASS VALORIZATION
(2013)
Article
Environmental Sciences
Yu Jia, Roger Hamberg, Asif Qureshi, Maria Makitalo, Christian Maurice
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Environmental Sciences
Yu Jia, Morten Birch Larsen, Maia Olsen, Christian Maurice
Summary: The capability of shrimp shells or construction demolition concrete as amendments to immobilize elements, primarily Pb and Zn, generated from mine waste weathering, was investigated via standard batch leaching test (L/S 10 cm(3)/g, 24 h). The effect of the amendment was tested at waste rock-to-residue ratios 9:1, 9.5:0.5, and 9.8:0.2 (weight:weight, w/w), with seawater as leachant. The leaching results showed that both shrimp shells and concrete amendments had high capacity to immobilize Pb and Zn, with the effectiveness depending on the ratio of the amendment to the waste rock, leachant, and experimental time.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)