Article
Geochemistry & Geophysics
Xin Gao, Wei Yuan, Jiubin Chen, Fang Huang, Zhengrong Wang, Yifei Gong, Yuanming Zhang, Yi Liu, Tong Zhang, Wang Zheng
Summary: This study investigates the sources, transport, and transformation processes of mercury (Hg) during pedogenesis in tropical soils, using soil and bedrock samples from a latosol profile in Zhanjiang, Guangdong Province, China. The results provide direct evidence for the accumulation and downward migration of atmospheric Hg in tropical soils, as well as the loss of geogenic Hg during the weathering of bedrock, highlighting the potential impact of tropical soils on global Hg cycling.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Agriculture, Multidisciplinary
Edilene Pereira Ferreira, Adriano Ribeiro Guerra, Antonio Carlos de Azevedo
Summary: This study examines the relationship between mineralogy, weathering indexes, and REE distribution in three different gneiss regoliths, highlighting the significant variations in REE content in gneisses.
Article
Environmental Sciences
Howard Omar Beckford, Huashuo Chu, Changshun Song, Cheng Chang, Hongbing Ji
Summary: The study of two typical red soil profiles in Yunnan-Guizhou Plateau, China, revealed similarity in distribution of secondary minerals and an inheritance relationship between red soils and their underlying bedrocks. During weathering and pedogenesis, alkaline elements behaved similarly, and were closely related to lanthanide elements.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Soil Science
T. Nyenda, W. Gwenzi, S. M. Jacobs
Summary: The study tracked changes in physicochemical properties of mine tailings over time and different topographic positions, suggesting that it takes more than 110 years for macronutrients in gold mine tailings to match reference conditions. However, other parameters fluctuated above and below reference conditions within shorter periods. The changes in tailings properties were correlated with dynamics in vegetation and biological crusts.
Article
Geosciences, Multidisciplinary
Cho-Yin Wu, Zeng-Yei Hseu
Summary: The composition and concentration of REEs in soil are primarily influenced by the lithology of parent materials. The study reveals that the association preferences between individual REEs and soil solid phases cause fractionation during pedogenetic processes. The influence of parent materials on REEs concentration and distribution during pedogenesis in four pedons is elucidated.
Article
Environmental Sciences
Adam T. Cross, Hongtao Zhong, Hans Lambers
Summary: The study found that in semi-arid Western Australia, establishing four substrate cover composition treatments on a dry-stacked magnetite tailings storage facility can promote the growth of native plant species and improve seed germination rates. This was mainly achieved by increasing the heterogeneity of surface covers to create more opportunities for seed germination.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Brooke D. Hunter, Joshua J. Roering, Peter C. Almond, Oliver A. Chadwick, Matthew L. Polizzotto, Lucas C. R. Silva
Summary: Characterizing the distribution and dynamics of organic carbon in soil is critical for quantifying changes in the global carbon cycle. The impact of weathering on soil geochemistry and organic carbon (SOC) storage has been analyzed using data from the Siuslaw River soil chronosequence. The results show that SOC stocks decrease with soil age as poorly crystalline minerals are replaced by more stable forms, but deep SOC storage becomes significant after 120 kyr, composing more than 40% of the total SOC stock by 990 kyr. These findings highlight the importance of understanding soil development in the critical zone for predicting SOC stocks.
Article
Soil Science
Mayara Daher, Elpidio Inacio Fernandes-Filho, Marcio Rocha Francelino, Liovando Marciano da Costa, Carlos E. G. R. Schaefer
Summary: Geochemical data plays an important role in studying semi-arid soils in Antarctica, allowing for interpretation of pedological processes and understanding the influence of parent materials on soil composition. Chemical weathering is limited, and pre-weathering has an impact on the mineral composition of soils developed on marine sedimentary rocks.
Article
Environmental Sciences
Zhanfei He, Yiting Xu, Xiaoliang Yang, Jianfei Shi, Xin Wang, Zhengzhong Jin, Daoyong Zhang, Xiangliang Pan
Summary: In this study, ureolytic bacteria strain Lysinibacillus fusiformis Lf was utilized to solidify metal tailings by filling the interstices of tailings particles and cementing the adjacent particles, thereby improving the mechanical properties and reducing permeability. The method effectively reduced leaching of heavy metals and showed potential for remediation of other tailings.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Julimar da Silva Fonseca, Milton Cesar Costa Campos, Elilson Gomes de Brito Filho, Bruno Campos Mantovanelli, Laercio Santos Silva, Alan Ferreira Leite de Lima, Jose Mauricio Da Cunha, Emily Lira Simoes, Luis Antonio Coutrim dos Santos
Summary: The study investigated the soil-landscape relationship in a sandstone-gneiss topolithosequence in the State of Amazonas, Brazil, and identified the factors determining soil diversification. Different soil types were found along the topolithosequence, influenced mainly by relief and parent material (sandstone-gneiss).
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Magboul M. Sulieman, Abdelazeem Sh. Sallam, Abdullah S. Al-Farraj, Eric C. Brevik
Summary: This study investigates the impact of different paleoclimates on soil development and evolution in Harrat Ithnayn volcano, Saudi Arabia. The results indicate that the targeted soils were formed under subhumid paleoclimate and are classified as vitric Andisols, with evidence of high pedogenic Fe and the predominance of certain minerals. The accumulation of secondary salts and carbonates is attributed to the influence of residual primary minerals and current arid conditions. Soil processes involved andisolization, salinization, and calcification, revealing the formation under multiple climates.
Article
Geography, Physical
W. D. Dimuth P. Welivitiya, Greg R. Hancock
Summary: This study simulated gully erosion on post-mining landforms using the SSSPAM model, and for the first time, qualitatively and quantitatively compared the model predictions with field data. The results showed that the SSSPAM model can accurately predict the position and general geomorphic characteristics of gullies.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geochemistry & Geophysics
Lulu Zhao, Hanlie Hong, Ke Yin, Shi Cheng, Xinghong Wang, Thomas J. Algeo
Summary: Clay minerals play a significant role in soil systems as a connection between organic and inorganic components. This study investigates the mineralogical and geochemical characteristics of soils derived from different parent rock types in subtropical China. It finds that 2:1 clay minerals and kaolinite are predominant, and identifies two distinct alteration pathways towards kaolinite and crystalline iron and aluminum (oxyhydr)oxides.
AMERICAN MINERALOGIST
(2023)
Article
Environmental Sciences
Ewa Blonska, Jaroslaw Lasota, Robert Jankowiak, Jakub Michalcewicz, Tadeusz Wojas, Adam Zbyryt, Michal Ciach
Summary: The physiological and behavioral activities of animals, including building nests by large-bodied birds, have significant impacts on the characteristics and functioning of soil. Through the deposition of organic and mineral materials in nests over time, a unique type of soil, referred to as ornithogenic soils, is formed by vertebrates and physically isolated from the ground, hosting a diverse array of organisms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Clecia Cristina Barbosa Guimaraes, Jose A. M. Dematte, Antonio Carlos de Azevedo, Ricardo Simao Diniz Dalmolin, Alexandre ten Caten, Veridiana Maria Sayao, Rafael Cipriano da Silva, Raul Roberto Poppiel, Wanderson de Sousa Mendes, Diego Fernando Urbina Salazar, Arnaldo Barros e Souza
Summary: This study investigated the synergistic performance of various spectral ranges on the weathering process of soils developed from magmatic material. It found that a synergic approach using multiple spectral ranges was more efficient in separating soil horizons by weathering degree compared to a single spectral region.
Article
Green & Sustainable Science & Technology
Yujun Wu, Meng Li, Ding Fu, Talitha C. Santini, Jun Jiang, William Hartley, Shengguo Xue
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Environmental Sciences
Rose Barrowcliffe, Sarah McSweeney, Graziela Miot da Silva, Talitha Santini
JOURNAL OF COASTAL RESEARCH
(2020)
Article
Engineering, Environmental
Talitha C. Santini, Jack C. Wang, Kimberley L. Warren, Giselle Pickering, Maija J. Raudsepp
Summary: The study suggests that inoculation with soda lake sediments or monosaccharide substrates can significantly improve the rate and extent of pH bioneutralization in alkaline bauxite residue tailings compared to other inocula or substrates, recommending their use for maximizing bioneutralization efficiency at an industrial scale.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Geography, Physical
Nicholas R. Patton, James Shulmeister, Tammy M. Rittenour, Peter Almond, Daniel Ellerton, Talitha Santini
Summary: The study presents a novel application of landscape smoothing with time to generate a detailed chronology of dune fields. By establishing a relationship model between surface roughness and dune emplacement timing, and utilizing a digital elevation model, the ages of dunes can be predicted. The study shows that dune fields went through four major phases of dune emplacement.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Microbiology
Talitha C. Santini, Lucy Gramenz, Gordon Southam, Carla Zammit
Summary: Salt lakes serve as important habitats for microbial life, hosting diverse microbial communities with unique functional capacities. This study found that geographical distance and pH were the primary factors influencing microbial community composition in salt lakes. The study also revealed the iron and sulfur oxidation tolerances of these microbial communities at extreme pH and salinity levels. The findings highlight the importance of sampling from remote, unexplored locations and focusing on microbial diversity when investigating novel microbial functional capacities and environmental tolerances.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Gaofeng Ni, Rachael Lappan, Marcela Hernandez, Talitha Santini, Andrew G. Tomkins, Chris Greening
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Biodiversity Conservation
Jeremy S. Simmonds, Andres Felipe Suarez-Castro, April E. Reside, James E. M. Watson, James R. Allan, Scott C. Atkinson, Pasquale Borrelli, Nigel Dudley, Stephen Edwards, Richard A. Fuller, Edward T. Game, Simon Linke, Sean L. Maxwell, Panos Panagos, Philippe Puydarrieux, Fabien Quetier, Rebecca K. Runting, Talitha Santini, Laura J. Sonter, Martine Maron
Summary: Global efforts to achieve internationally agreed goals such as reducing carbon emissions and halting biodiversity loss lack integration. To unify these goals, we have derived specific area-based targets for retaining natural and seminatural terrestrial vegetation worldwide. At least 50% of Earth's terrestrial surface needs to be preserved in order to contribute to biodiversity, climate, soil, and freshwater conservation objectives under 4 United Nations' resolutions.
CONSERVATION BIOLOGY
(2023)
Article
Geosciences, Multidisciplinary
D. Ellerton, T. M. Rittenour, J. Shulmeister, A. P. Roberts, G. Miot da Silva, A. Gontz, P. A. Hesp, P. Moss, N. Patton, T. Santini, K. Welsh, X. Zhao
Summary: This study used optically stimulated luminescence and palaeomagnetic dating to determine the age of Fraser Island and the adjacent Cooloola Sand Mass. The results showed that they formed between 1.2 Ma and 0.7 Ma, during a global climate reconfiguration. The formation of Fraser Island reduced sediment supply and facilitated the development of the Great Barrier Reef.
Article
Metallurgy & Metallurgical Engineering
John Vogrin, Hong Peng, Talitha Santini, Li Jie Lee, James Vaughan
Summary: The influence of Na2SO4 on chemical equilibrium in the NaOH-Al2O3-SiO2-Na2SO4-H2O system was investigated. Sodium aluminosilicate, also known as desilication product (DSP), was synthesized hydrothermally from kaolin. The experiments were conducted at different temperatures and Na2SO4 concentrations. The incorporation of SO42- into DSP followed Langmuir-type isotherms, with a maximum occupancy of 85%. Na2SO4 enhanced desilication by up to 80% compared to sulphate-free tests, with diminishing effect at higher SO42- concentrations. The presence of sulphate led to different transformation pathways and improved thermal stability of DSP.
Article
Engineering, Environmental
G. Scullett-Dean, J. L. Hamilton, O. Repina, H. E. A. Brand, E. D. Burton, M. Saunders, T. C. Santini
Summary: This study investigated the incorporation of various minor and trace elements into hematite and their effects on the physical and chemical properties of the mineral. It was found that the simultaneous incorporation of Al, Cr, V, and Zn showed both synergistic and antagonistic effects among certain element combinations. However, Mo had minimal association with hematite, while As completely prevented its formation. The results provide new insights into trace element geochemistry in hematite and emphasize the importance of multi-element studies in understanding natural and anthropogenic systems.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Grace Scullett-Dean, Katherine Stockwell, Lance Myers, Hugh Nyeboer, Benjamin Moreira-Grez, Talitha C. Santini
Summary: In situ remediation of bauxite residue through a combination of microbial and abiotic amendments has shown promising results in improving the chemical and physical properties of the residue, making it more suitable for plant growth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
John Vogrin, Talitha Santini, Hong Peng, Ling Zhao, James Vaughan
Summary: The synthesis of zeolites from kaolin through hydrothermal treatment is a cost-effective and sustainable method. This study investigated the equilibrium precipitation behavior of zeolites from kaolin under different NaOH and NaAl(OH)(4) concentrations and constructed a phase diagram to demonstrate the stability regions and transition zones between phases. The research also highlighted the possibility of using direct kaolin-to-zeolite technology as a low-cost and low-energy alternative to conventional zeolite production.
APPLIED CLAY SCIENCE
(2023)
Article
Environmental Sciences
Golam Taki, Pauline F. Grierson, Grace Scullett-Dean, Helen E. A. Brand, Daniel V. Murphy, Talitha C. Santini
Summary: Amelioration and management of large volumes of tailings resulting from alumina refining is a major challenge due to their high alkalinity and salinity. Blended byproduct caps, achieved by mixing tailings with other local byproducts, show potential as a cost-effective approach to reduce pH, salinity, and toxic elements. This study investigated the effects of blending alkaline bauxite residue with four byproducts on cap conditions, revealing that a combination of all four byproducts achieved the lowest pH and reduced concentration of toxic elements. Further improvements may be possible by adjusting addition rates, incorporating other materials, and extending leaching/weathering time.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Prithviraj Gupta, Sara J. Couperthwaite, Talitha C. Santini, Rachel A. Pepper, Graeme J. Millar
Summary: This study aimed to predict the weathering behavior of bauxite residue through leaching experiments and modeling, focusing on the role of sodalite and calcite as critical buffering minerals. The pH was found to strongly influence the distribution of different elements in the leachate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Environmental Studies
Robyn Boldy, Talitha Santini, Mark Annandale, Peter D. Erskine, Laura J. Sonter
Summary: Mining activities can have negative impacts on ecosystems and ecosystem services, but the effects on human wellbeing are less certain. Most studies focus on coal mining, with regulating services like carbon storage and erosion prevention being the most commonly assessed. There is considerable variation in how ES is defined and conceptualized, and a lack of methodological consistency in ES assessments across studies.
EXTRACTIVE INDUSTRIES AND SOCIETY-AN INTERNATIONAL JOURNAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Arsyad Maulana Dzulqornain, Ana Belen Cueva-Sola, Kyeong Woo Chung, Jin-Young Lee, Rajesh Kumar Jyothi
Summary: This study presents a hydrometallurgical process for the separation of light rare earth elements (LREEs) using oxidation, precipitation, solvent extraction, and stripping techniques. Selective oxidation with potassium permanganate was employed for the separation of cerium (III). Solvent extraction with Cyanex 572 and cross-current scrubbing were used to achieve the separation of lanthanum (III) from neodymium (III) and praseodymium (III).
Article
Metallurgy & Metallurgical Engineering
Bo Chen, Shenxu Bao, Yimin Zhang
Summary: This study investigated the effects of Al, Fe, P, Si and Na on the precipitation characteristics of vanadium in the ultrasound precipitation system. The concentration upper limits and the negative influence on the precipitation kinetics were determined for each impurity. The findings provide theoretical and technical support for the industrial application of ultrasound precipitation technology.
Article
Metallurgy & Metallurgical Engineering
Chunlin He, Mingwei Qi, Yun Liu, Zunzhang Liu, Yuezhou Wei, Toyohisa Fujita, Guifang Wang, Shaojian Ma, Wenchao Yang, Junyuan Gan
Summary: In this study, D201 x 7 resin and tartaric acid were used as materials and complexing agents for the separation of germanium from sulfuric acid solution. The study successfully achieved the separation of germanium and demonstrated the high selectivity and adsorption performance of the resin.
Article
Metallurgy & Metallurgical Engineering
Xiaobo Zhu, Yue Liu, Chen Ma, Wang Li
Summary: A selective and highly effective method for the extraction and separation of V(IV) and Fe(III) using N235 and P507 as solvent extractants is proposed. The pH, composition, and concentration of the extractant mixture have significant effects on the extraction efficiency and separation factor. The mixing of P507 and N235 generates the P507 monomer, which enhances the extraction efficiency and weakens the stability of vanadium containing extraction complex. Cation exchange process forms the extraction complexes.
Article
Metallurgy & Metallurgical Engineering
B. Behnajady, J. Yousefi Seyf, S. Karimi, M. Moradi, M. Sohrabi
Summary: Deep eutectic solvents (DES) have potential as environmentally-friendly solvents for recovering metals from spent lithium-ion batteries (LIBs). Experimental and molecular dynamics simulation results showed that the chloride ions in DES can form complexes with lithium, manganese, and nickel ions, facilitating their extraction.
Review
Metallurgy & Metallurgical Engineering
Sebastian Kinas, Dorota Jermakowicz-Bartkowiak, Anna Dzimitrowicz, Piotr Cyganowski
Summary: The high demand for platinum-group metals (PGMs) and Re in economical and industrial applications related to environmental protection and energy conversion/storage has led to resource scarcity. Thus, it is crucial to recover and recycle these rare metals. This study critically reviews the recent progress in the effective recovery of PGMs and Re from materials relevant to sustainable technologies, emphasizing practical aspects, environmental impact, and issues related to the unit processes of recovery.
Article
Metallurgy & Metallurgical Engineering
Guopeng Yang, Qinggang Li, Guiqing Zhang, Mingyu Wang, Zuoying Cao, Wenjuan Guan, Jiawei Du, Shengxi Wu
Summary: The study proposes an efficient, clean, and economical process for recovering V2O5 from titanium-white waste through hydrogen peroxide stripping and precipitation of vanadium products by heating. Experimental results show that the use of D2EHPA as a modifier prolongs the duration of maximum stripping efficiency, enabling continuous operation.
Article
Metallurgy & Metallurgical Engineering
Guisu Yu, Shuainan Ni, Yun Gao, Ditang Mo, Zhiyuan Zeng, Xiaoqi Sun
Summary: This research proposes a novel green process for the selective recovery of rare earth elements (RE) from spent NdFeB permanent magnet using hydrophobic deep eutectic solvent (HDES). Through optimization of extraction conditions and stripping method, efficient and clean separation and recovery have been achieved.
Article
Metallurgy & Metallurgical Engineering
Jia Li, Xinsheng Wu, Xiaozhou Zhou, Li Zeng, Shengxi Wu, Mingyu Wang, Wenjuan Guan, Zuoying Cao, Qinggang Li, Guiqing Zhang
Summary: This paper presents a complete hydrometallurgical route for the full-component utilization of deep-sea polymetallic nodules (DPN), achieving high recovery efficiency and near-zero waste production with low energy consumption.
Article
Metallurgy & Metallurgical Engineering
Sanae Elmisaoui, Abderrazak M. Latifi, Lhachmi Khamar
Summary: A first principles model is developed to describe the dissolution mechanism of phosphate ore particles in a solution of phosphoric acid. The model accounts for non-uniform size of ore particles using particle size distributions and quantifies their influence on the model predictions. A global estimability analysis is carried out to determine the estimable parameters from experimental data, and the predictions show good agreement with the experimental data. The computed activation energy indicates that diffusion is the rate limiting step of the dissolution process.