Article
Geosciences, Multidisciplinary
E. Sakala, F. Fourie, M. Gomo, G. Madzivire
Summary: This study investigates the response of different rock types in the Karoo coalfields to acid mine drainage (AMD). The presence of high carbonate mineral content in rocks can help neutralize and reduce the concentration of heavy metals in AMD. Sulfate and chloride concentrations in AMD remain unchanged after the leaching process, indicating their potential as conservative tracers of AMD movement in the subsurface.
NATURAL RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Hao Tang, Jin-zhi Luo, Li-wei Zheng, Chi-yang Liu, Hua-hua Li, Guan-nan Wu, Meng-li Zeng, Xue-song Bai
Summary: Acid mine drainage can severely damage coal pillars and pose a risk to mine stability after underground coal mining; a static immersion method was proposed in this study; changes in water quality parameters such as pH, ORP, EC, and TDS of acid mine drainage solutions were significantly influenced by the absorption of hydrogen ions, affecting the pore characteristics of coal samples.
Article
Engineering, Environmental
Luciano Bernardo Jose, Ana Claudia Queiroz Ladeira
Summary: This study focuses on using ion exchange process to recover and separate rare earth elements (REE) from acid mine effluent, achieving successful fractionation with NH(4)EDTA and an overall recovery rate of 83%.LEWATIT (R) MDS 200H resin has shown effectiveness in recovering and fractionating REE, demonstrating the capability to separate heavy REE from light REE and metal impurities, with promising results.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Yongtae Ahn, Dong-Wan Cho, Waleed Ahmad, Jungman Jo, Jongsoo Jurng, Mayur B. Kurade, Byong-Hun Jeon, Jaeyoung Choi
Summary: A novel metal-biochar composite (Biochar/AMDS) was fabricated using spent coffee waste (SCW)/acid mine drainage sludge (AMDS) through co-pyrolysis, with high porous structure, carbonaceous layers, and heterogeneous Fe phases. The adsorptive removal of formaldehyde by Biochar/AMDS was significantly higher than metal-free biochar, and changing the ratio of AMDS improved the adsorption capacity for formaldehyde. Furthermore, thermal treatment at 100 degrees C effectively restored the exhausted adsorptive function of the used adsorbent.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Yan Pan, Han Ye, Yang Yang, Chengfang Yang, Xiaofei Li, Tengfei Ma, Zhi Dang, Guining Lu
Summary: Long-term accumulation of heavy metals in paddy soils caused by acid mine drainage (AMD) irrigation poses a severe threat to environmental health. This study investigates the retention and mobility mechanisms of Cu and Cd in soil after AMD flooding, and finds that Cd is more mobile than Cu and the soil has a greater adsorption capacity for Cu.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Ricardo Millan-Becerro, Carlos R. Canovas, Francisco Macias, Tobias S. Roetting, Louise Siddorn, Peter Stanley, Jose Miguel Nieto
Summary: This study evaluates the effectiveness of dispersed alkaline substrate (DAS) technology in treating highly acidic and contaminated leachates from sulfide-rich mining wastes under wet temperate oceanic climate conditions. The results show that the use of multistep columns filled with alkaline reagents can effectively remove various metals and metalloids from the leachates, although the removal of SO4 is not significant. Precipitation of certain phases may have played a key role in controlling the solubility of pollutants during the treatment process.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Geochemistry & Geophysics
Rong Fan, Gujie Qian, Yubiao Li, Michael D. Short, Russell C. Schumann, Miao Chen, Roger St C. Smart, Andrea R. Gerson
Summary: Research suggests that in weathered pyritic wastes, the release of acidity is primarily from secondary sulfate minerals rather than residual pyrite, requiring specific treatment strategies. Dissolving secondary minerals containing stored acidity necessitates the use of lime-saturated water with high alkalinity.
Article
Geochemistry & Geophysics
Marco Pieretti, Teemu Karlsson, Susanna Arvilommi, Muhammad Muniruzzaman
Summary: Humidity cell test is a popular method for predicting the reactivity and leachate quality of mining waste materials. However, the interpretation of test results can vary widely due to poor characterization and identification of key processes. This study investigates the leaching behavior of mine waste rocks through humidity cell tests. The results show differences in chemical weathering rates and mass loadings between different cell setups. Despite attempts to homogenize samples, leachate concentrations suggest possible influences from microscale chemical heterogeneity. Quantitative interpretation of test results using modeling provides insights into the complex interplay between chemical reactions and physical processes, highlighting the importance of understanding water flow dynamics for predictive simulations.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2022)
Article
Geochemistry & Geophysics
Maria Santisteban, Ana Teresa Luis, Jose Antonio Grande, Javier Aroba, Jose Miguel Davila, Aguasanta Miguel Sarmiento, Juan Carlos Fortes, Francisco Cordoba, Angel Mariano Rodriguez-Perez
Summary: This work focuses on the physical-chemical characterization of a mining effluent affected by acid mine drainage (AMD) from its source to the confluence in the Odiel river. The study concludes that there are natural attenuation processes in the mining channel, despite the influence of other drainages with different hydrochemical characteristics.
Article
Engineering, Chemical
Hsan Youssef Mehdaoui, Youssef Guesmi, Marouen Jouini, Carmen Mihaela Neculita, Thomas Pabst, Mostafa Benzaazoua
Summary: Passive treatment systems (PTSs) are effective for treating mine drainage (MD) through chemical and biological processes. The by-products of PTSs can be potential environmental contaminants, but they can also be secondary sources for recovering valuable elements. The stability prediction of PTSs residues is inconsistent, and it is suggested to combine chemical-mineralogical characterization with leaching tests for a more realistic assessment of their environmental behavior. Further research is needed to select appropriate leaching tests and conduct techno-economic analyses for the sustainable management of PTSs residues.
MINERALS ENGINEERING
(2023)
Article
Environmental Sciences
Evgeniya Ushakova, Elena Menshikova, Sergey Blinov, Boris Osovetsky, Pavel Belkin
Summary: This study investigates the contamination of Kosva Bay by acid mine drainage (AMD) from Kizel Coal Basin in Russia. The results show that sediments downstream from abandoned coal mines in the bay are contaminated with heavy metals, especially Cr, Cu, and As. The environmental indices indicate different degrees of contamination, and the potential ecological risk index suggests a certain level of risk to aquatic organisms in the bay.
Review
Environmental Sciences
Zhihong Tu, Qi Wu, Hongping He, Shu Zhou, Jie Liu, Huijun He, Chongmin Liu, Zhi Dang, John R. Reinfelder
Summary: Acid mine drainage (AMD) is a significant source of environmental pollution globally, and the conventional methods for its remedial treatment are costly and may lead to secondary pollution. This review highlights the importance of pyrite surface passivation as a potential solution to prevent or reduce AMD generation and associated pollution. Various pyrite anti-corrosion technologies, including inorganic, organic, and organosilane passivating coatings, are summarized. The need for future research to integrate existing passivation agents or new artificial materials while considering environmental conditions, costs, and long-term passivation performance is emphasized.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yan Pan, Yuanqi Fu, Sijia Liu, Tengfei Ma, Xueqin Tao, Yao Ma, Sheng Fan, Zhi Dang, Guining Lu
Summary: This study investigated the migration of Cu and Cd fractions in unpolluted paddy soil following treatment with acid mine drainage (AMD). The results showed that the highly mobile fractions of Cu and Cd significantly increased during AMD flooding, leading to a notable increase in the total content of these metals in the soil. Scanning electron microscopy identified changes in the distribution of elements in the soil, with Fe appearing to aggregate.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Mehdi Brookhian, Hamid Reza Golkar Hamzee Yazd, Mojtaba Tavousi
Summary: This study tested 13 samples from the Dardavey mine and found that nine samples had acid generation while four samples had low acidity. The mineral content of the samples influenced the production of acid mine drainage. Areas prone to acid leachate production are easily degraded due to the karst nature of the area and the existing drainage network.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Zhenghua Liu, Ye Huang, Teng Zhang, Delong Meng, Zhen Jiang, Zhendong Yang, Zhaoyue Yang, Liangzhi Li, Yabing Gu, Jianjun Wang, Xueduan Liu, Chengying Jiang, Huaqun Yin
Summary: The viral communities in acid mine drainage are significantly associated with microbial communities, and viral diversity has positive correlations with microbial diversity. Viruses regulate the relative abundance of hosts through adaptive genes and have a greater influence on the composition of microbial communities. Moreover, viruses play important roles in regulating ecological processes of community assembly, such as dispersal limitation and homogenous dispersal.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Engineering, Environmental
D. J. M. Ngan-Tillard, H. K. Engin, W. Verwaal, A. Mulder, R. Ulusay, Z. A. Erguler
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2012)
Article
Engineering, Geological
Z. A. Erguler, A. Shakoor
ENGINEERING GEOLOGY
(2009)
Article
Engineering, Geological
Zeynal Abiddin Erguler
ENGINEERING GEOLOGY
(2009)
Article
Engineering, Geological
Z. A. Erguler, R. Ulusay
ENGINEERING GEOLOGY
(2009)
Article
Engineering, Geological
R. Ulusay, Z. A. Erguler
ENGINEERING GEOLOGY
(2012)
Article
Engineering, Environmental
Zeynal Abiddin Erguler, Abdul Shakoor
ENVIRONMENTAL & ENGINEERING GEOSCIENCE
(2009)
Article
Engineering, Geological
Z. A. Erguler, R. Ulusay
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2009)
Article
Engineering, Chemical
Guzide Kalyoncu Erguler, Zeynal Abiddin Erguler, Hamdi Akcakoca, Ali Ucar
MINERALS ENGINEERING
(2014)
Article
Engineering, Geological
Resat Ulusay, Oemer Aydan, Zeynal A. Erguler, Dominique J. M. Ngan-Tillard, Takafumi Seiki, Wim Verwaal, Yasuhito Sasaki, Akira Sato
ROCK MECHANICS AND ROCK ENGINEERING
(2014)
Article
Geosciences, Multidisciplinary
Zeynal Abiddin Erguler, Huseyin Karakus, I. Goktay Ediz, Cem Sensogut
ARABIAN JOURNAL OF GEOSCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Guzide Kalyoncu Erguler, Zeynal Abiddin Erguler
ARABIAN JOURNAL OF GEOSCIENCES
(2020)
Article
Engineering, Geological
Ali Samet Ongen, Zeynal Abiddin Erguler
Summary: Swelling soils pose a worldwide problem for engineering structures and cause serious damage. The water content fluctuation is a crucial factor that leads to soil swelling pressure, especially in arid and semi-arid regions. This study focuses on investigating the effect of variations in initial water content on soil swelling behavior. The results show a statistically significant linear relationship between initial water content and swelling pressure, with predictive empirical models obtained. Additionally, a new approach called swelling pressure designation (SPD) is recommended for predicting the swelling pressure of soils with any water content.
QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
(2022)
Article
Environmental Sciences
Resat Ulusay, Candan Gokceoglu, Tamer Topal, Harun Sonmez, Ergun Tuncay, Zeynal Abiddin Erguler, Ozgu Kasmer
ENVIRONMENTAL GEOLOGY
(2006)
Article
Engineering, Environmental
E Avsar, R Ulusay, ZA Erguler
ENVIRONMENTAL & ENGINEERING GEOSCIENCE
(2005)
Article
Engineering, Chemical
Benjamin De Castro, Mostafa Benzaazoua, Soumali Roychowdhury, Aurelie Chopard, Francis Quintal Lauzon, Benoit Plante
Summary: This study proposes an innovative method using deep learning algorithm and reflected light optical imaging to automatically detect all particles and minerals in acrylic resin polished sections. The experimental results show that this method can accurately detect all mineral particles, including transparent minerals, under reflected light optical microscopy, and provide unbiased mineralogical quantification.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Qiushi Song, Xinyu Du, Changlu Shan, Hongwei Xie, Zhiqiang Ning, Kai Yu
Summary: This study investigated the effect of magnetic stirring on the microstructure of Co deposits during electrowinning in a chloride solution. It was found that magnetic stirring effectively reduced the negative influence of H2 bubbles on the structure of Co deposits and changed their nucleation and growth behavior, resulting in the preparation of high-quality columnar Co crystals.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Tao Ge, Xiaowei Zhou, Liang Xu, Yan Sun, Cheng Yang, Yongpan Tian, Zhuo Zhao
Summary: In this study, the extraction performance and complexation mechanism of p-di-ethyl-amino-methylthiacalix[4]arene (L) towards Pt(IV) were investigated. The results indicated that L had excellent complexation ability towards Pt(IV) and could selectively extract it from a solution containing multiple competing ions.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yuan Li, Dirk van Zyl
Summary: This paper presents a modified Kynch's approach to explain the hindered settling behavior of suspensions impacted by segregation. The experimental data and predicted results confirm the effectiveness of the proposed method.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yi Fang, Aurora Robledo-Cabrera, Changsheng Peng, Shan Huang, Qi Xiao, Alejandro Lopez-Valdivieso
Summary: With the assistance of mechanical ball milling, the partially oxidized micro-sponge iron (micro-Fe0@Fe2O3) achieves significantly improved removal of Cr(VI) across a broad pH range. Mechanical force eliminates the surface oxide layer and exposes the Fe0 core, leading to sustained reduction of Cr(VI). The efficiency of micro-Fe0@Fe2O3 is strongly influenced by dissolved oxygen, with higher DO resulting in the generation of stable reductant Fe(II) under acidic conditions, while DO consumption hinders the reduction of Cr(VI) under alkaline conditions due to increased pH. Parameters of ball milling operation, especially rotation speed, have a significant impact on the removal of Cr(VI).
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Alton F. Grabsch, Phillip D. Fawell, Michael G. Davies
Summary: High molecular weight partially hydrolysed polyacrylamide (PHPA) is commonly used in mineral exploration drilling to increase fluid viscosity and help maintain the suspension of fine particles. However, clarifying these suspensions can be difficult, and previous studies have found that anionic flocculants are ineffective. This study confirmed that nonionic flocculants can successfully aggregate the particles, indicating that the charged tails of adsorbed PHPA prevent anionic flocculants from accessing the particle surfaces.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
J. S. Guiral-Vega, L. Perez-Barnuevo, J. Bouchard, A. Ure, E. Poulin, C. Du Breuil
Summary: This paper introduces an approach that combines particle properties and process modeling to describe the behavior of iron ore in a laboratory-scale drum-type magnetic separator. Early information on iron ore processing behavior can be obtained through laboratory testing, automated mineralogy analysis, and process modeling.
MINERALS ENGINEERING
(2024)
Review
Engineering, Chemical
Sayed Janishar Anzoom, Ghislain Bournival, Seher Ata
Summary: This review discusses the benefits and challenges of coarse particle flotation, as well as recent developments in improving the process. Coarse particle flotation has various applications and offers advantages in technical, economic, and sustainability aspects. However, it also faces challenges such as particle detachment, transfer between phases, and persistence in the froth phase. Technological advancements, such as fluidized-bed flotation and processes enhancing bubble-particle attachment, have shown promising results in efficiently recovering larger particles.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yimei Xiao, Jinchan Feng, Bingqiao Yang, Huihua Luo, Fang Zhou
Summary: In this study, the use of fulvic acid as a depressant for the flotation separation of chalcopyrite from arsenopyrite was investigated. It was found that fulvic acid strongly depressed arsenopyrite while having little influence on chalcopyrite flotation. The addition of calcium hypochlorite facilitated the adsorption of fulvic acid on arsenopyrite surface.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Bo Hao, Minqiang Fan
Summary: Particle-bubble attachment is crucial in coal and mineral flotation processes. In this study, the attachment process of low-rank coal particles to the bubble surface was simulated, revealing the important role of water film rupture in particle attachment.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Shuwei Wu, Shuai Wang, Guoqiang Wang, Longfei Fan, Jianbo Guo, Zhengbin Liu, Haoyan Zhang, Wei Guan, Yukuan Wang, Yewei Wu
Summary: This study analyzes the motion mode of eccentric roller crushers and proposes a calculation method for productivity. Through laboratory experiments, the results indicate that the proposed method can effectively estimate the productivity of eccentric roll crushers.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Hanna Miettinen, Malin Bomberg, Ozlem Bicak, Zafir Ekmekci, Paivi Kinnunen
Summary: Mineral processing requires large amounts of water, and reducing water consumption through recirculation and closing water loops is important. However, this can lead to the accumulation of contaminants in the process water, which can negatively affect the process performance. In this study, the impact of microorganisms on flotation performance was investigated, and ion exchange was evaluated for removing dissolved sulfur species and microorganisms from water. The results showed that adding microorganisms had a positive effect on flotation selectivity, especially for nickel. Different water types, process water and final tailings water, behaved slightly differently. Ion exchange proved to be effective in removing sulfur species and microorganisms, and dissolved air flotation was a successful pretreatment for ion exchange in removing microorganisms.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Canneng Chen, Song Zhang, Quanjun Liu, Luzheng Chen, Yongjun Xian, Yijie Wang
Summary: This study introduces the use of ultrasonic pretreatment to enhance the flotation separation of elemental sulfur and silver-bearing lead minerals from ultrafine residue. The results show that ultrasonic pretreatment effectively liberates associated sulfur and improves the separation of sulfur and silver-bearing lead minerals. Under optimized conditions, ultrasonic pretreatment significantly improves the recovery and grade of sulfur in the concentrate, as well as the recovery of lead and silver in the tailings.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Genzhuang Li, Fisher Wang, Bern Klein, Michael Deal, Aaron Wright, Hector Mezquita
Summary: This paper presents a stress-based approach for predicting and improving large-scale HIG mill performance through experimental testing and model calibration.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Runpeng Liao, Shuming Wen, Jian Liu, Shaojun Bai, Qicheng Feng
Summary: This study demonstrates that the use of a DDA/DDTC mixed collector system can significantly improve the flotation performance of smithsonite. The synergistic effect between DDA and DDTC is confirmed, and the mixed collector system contributes to a decrease in solution surface tension. The use of FT-IR and XPS confirms the simultaneous physisorption and chemisorption of DDA and DDTC on the smithsonite surface, and contact angle measurements show that the mixed collector effectively enhances the hydrophobicity of smithsonite. Molecular dynamics simulations reveal the multilayer adsorption of DDTC and DDA on the smithsonite surface, with DDTC promoting the adsorption of DDA.
MINERALS ENGINEERING
(2024)
