Article
Environmental Sciences
Xun Du, Toru Inui, Sho Ogata
Summary: The study found that the specific surface area (SSA) and rock layer thickness of hydrothermally altered rocks have an impact on As leaching, with pH values being proportional to the SSA and rock layer thickness. The concentration and leachability of As showed a proportional relationship with the SSA. However, the leachability of As decreased with increased rock layer thickness. These findings are significant for assessing and controlling As release from hydrothermally altered rocks.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Mariko A. Carneiro, Joana F. R. Coelho, Ariana M. A. Pintor, Rui A. R. Boaventura, Cidalia M. S. Botello
Summary: The study focused on the chemical desorption of arsenic from saturated iron-coated cork granulates and the regeneration capacity of this adsorbent, showing that NaOH solution achieved the highest arsenic removal rate but was aggressive to the adsorbent structure. A less basic NaOH solution proved to be less aggressive and allowed for multiple adsorption-desorption cycles with consistent arsenic removal capacity.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Hao Zhu, Wenhui Lin, Liwen Fan
Summary: This study focuses on the hydrothermal synthesis of magnetically activated carbon and its efficacy in As(III) adsorption. The adsorbents demonstrated high As(III) removal efficiency with a uniform pore distribution. The kinetics and thermodynamics of adsorption were rigorously analyzed, and the Langmuir model was found to be the most suitable for describing the adsorption process.
Article
Geosciences, Multidisciplinary
Shreya Kanakiya, Gillian M. Turner, Michael C. Rowe, Ludmila Adam, Jan M. Lindsay
Summary: A study on volcanic rocks at White Island volcano in New Zealand found that some altered lavas have significantly higher remanent magnetization than fresh lavas, contrary to the common premise that hydrothermal alteration reduces total magnetization. This observation prompts a discussion on plausible mechanisms for the retention of high remanent magnetization in altered lavas, emphasizing the importance of magnetic mineralogy and grain size. The results underscore the need for caution in correlating reduced magnetization with hydrothermally altered regions and highlight the significance of measuring both induced and remanent magnetization in interpreting field-scale data.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Green & Sustainable Science & Technology
Jin-fang Lv, Yong-xing Zheng, Xiong Tong, Xiu Li
Summary: The study found that waste rocks can be used as a novel adsorbent to treat beneficiation wastewater containing arsenic and fluorine, with high removal rates of arsenic and fluorine achieved. The modification of waste rocks increased interlayer spacing and average pore size, leading to enhanced adsorption capacities. The adsorption process was controlled by chemisorption and involved ligand exchange and electrostatic adsorption, providing a promising method for clean utilization of waste rocks and sustainable development of mining.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Mariko A. Carneiro, Ariana M. A. Pintor, Rui A. R. Boaventura, Cidalia M. S. Botelho
Summary: The study investigates the continuous removal of arsenic using iron coated cork granulates (ICG) as an alternative biosorbent. The experimental parameters affecting the adsorption process are explored and thermodynamic parameters suggest the spontaneity and endothermic nature of the process. The study finds that ICG efficiently removes As(V) and As(III) under various conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
William R. Diephuis, Anna L. Molloy, Lindsey L. Boltz, Tristan B. Porter, Anthony Aragon Orozco, Reina Duron, Destiny Crespo, Luke J. George, Andrew D. Reiffer, Gabriela Escalera, Arash Bohloul, Carolina Avendano, Vicki L. Colvin, Natalia I. Gonzalez-Pech
Summary: The presence of arsenic in groundwater and other drinking water sources poses a significant public health concern. This study compares the performance of different iron oxide nanomaterials supported on sand for arsenic adsorption in continuous flow experiments. The results show that nanomaterials with lower agglomeration and good dispersion tend to be released during water treatment. The use of clusters of nanoparticles synthesized through a solvothermal method (cIONPs) overcomes this implementation issue and exhibits higher adsorption capacities.
Article
Environmental Sciences
Cosmin Vancea, Georgiana Mladin, Mihaela Ciopec, Adina Negrea, Narcis Duteanu, Petru Negrea, Giannin Mosoarca, Catalin Ianasi
Summary: This study investigated the removal of arsenic from water using batch adsorption and fixed-bed column techniques. The adsorption process was found to be spontaneous, endothermic, and of a physical nature. High removal efficiency of arsenic was achieved in both batch adsorption and fixed-bed column experiments.
Review
Green & Sustainable Science & Technology
Mariko A. Carneiro, Ariana M. A. Pintor, Rui A. R. Boaventura, Cidalia M. S. Botelho
Summary: Arsenic is a toxic element and a major pollutant in drinking water, and adsorption is an efficient and cost-effective treatment option for arsenic contamination issues. This paper reviews the latest progress in arsenic adsorption technology and discusses regeneration and recovery, suggesting further pilot-scale research to assess the feasibility of novel adsorbents for industrial purposes.
Article
Engineering, Environmental
Xiaoli Song, Lijuan Nong, Qingqing Zhang, Junliang Liu, Shuwei Zhang
Summary: Magnetic composite microparticles have high arsenic adsorption performance and are suitable for the treatment of low concentration arsenic-contaminated wastewater, with good regenerative capacity and resistance to interference ions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Junqiang Yang, Keliang Shi, Fei Wu, Juan Tong, Yin Su, Tonghuan Liu, Jiangang He, Pavle Mocilac, Xiaolin Hou, Wangsuo Wu, Weiqun Shi
Summary: Technetium-99, a high-yield fission product, is a significant threat due to its radiotoxicity and high solubility in the environment. The study introduced a low-cost adsorbent, HDPy-bent, which showed excellent adsorption ability for ReO4, an analogue for TcO4, across a range of pH levels, demonstrating potential for efficient removal of 99Tc from contaminated water.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Michael J. Heap, Claire E. Harnett, Fabian B. Wadsworth, H. Albert Gilg, Lucille Carbillet, Marina Rosas-Carbajal, Jean-Christophe Komorowski, Patrick Baud, Valentin R. Troll, Frances M. Deegan, Eoghan P. Holohan, Roberto Moretti
Summary: The tensile strength of volcanic rocks plays a crucial role in understanding volcanic processes and optimizing energy production in volcanic geothermal reservoirs. This study presents an experimental investigation of the tensile strength of variably altered volcanic rocks, revealing that both porosity and alteration significantly affect the tensile strength. The findings suggest that future modelling should consider the tensile strength of hydrothermally altered volcanic rocks.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2022)
Article
Engineering, Environmental
Thi Hai Nguyen, Seongchul Ryu, Paripurnanda Loganathan, Jaya Kandasamy, Tien Vinh Nguyen, Saravanamuthu Vigneswaran
Summary: In this study, a natural laterite adsorbent from Vietnam was investigated for its potential application in removing arsenic contamination from drinking water supplies. The adsorbent exhibited good adsorption capacity for arsenic and the study also developed a model to predict the adsorption performance in column experiments and filters.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Materials Science, Ceramics
Ronghui Li, Weiyi Yang, Shuang Gao, Jianku Shang, Qi Li
Summary: A novel arsenic adsorbent HCO/GFC synthesized for arsenic removal from contaminated groundwater showed high efficiency in removing As(V) and As(III) even at low equilibrium concentrations. Without pre-treatment, the filter can easily remove the more toxic As(III) within a wide range of solution pH. Test results demonstrated good arsenic removal performance of HCO/GFC filter.
JOURNAL OF ADVANCED CERAMICS
(2021)
Article
Biotechnology & Applied Microbiology
Natalia Gonzalez-Pech, Anna L. Molloy, Alexandra Zambrano, Wayne Lin, Arash Bohloul, Rafael Zarate-Araiza, Carolina Avendano, Vicki L. Colvin
Summary: This study compares the use of commercial iron-oxide nanoparticles (IONPs) with proven arsenic sorbents for arsenic remediation. The results showed that some commercial sorbents can effectively treat water contaminated with arsenic, but the cost of treatment and waste generation pose challenges for developing countries.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Soil Science
Gia Duc Ho, Carlito Baltazar Tabelin, Pawit Tangviroon, Shuji Tamamura, Toshifumi Igarashi
Summary: The effects of cement addition on arsenic leaching from tunnel-excavated soils were investigated in this study. It was found that adjusting pH is an important measure to restrict arsenic leaching. Although the addition of cement slightly altered the chemical properties of soils, the chemical phases of arsenic remained unchanged.
Review
Engineering, Chemical
Carlito Baltazar Tabelin, Jessica Dallas, Sophia Casanova, Timothy Pelech, Ghislain Bournival, Serkan Saydam, Ismet Canbulat
Summary: The demand for lithium has surged due to international treaties promoting renewable energy integration. Majority of lithium is used for LIBs, driving a significant market growth. The article discusses global lithium resources and supply-demand dynamics, explores challenges and innovations, and investigates unconventional lithium sources.
MINERALS ENGINEERING
(2021)
Article
Energy & Fuels
Shuji Tamamura, Takuma Murakami, Akio Ueno, Satoshi Tamazawa, Tamotsu Kiyama, Hidenori Inomata, Hiroyuki Matsumoto, Kagemi Uchida, Yoshiaki Suzuki, Jun Aizawa, Katsuhiko Kaneko
Summary: Isotopic analysis of rocks and sedimentary rocks from the Kushiro Coal Mine in Japan reveals the presence of thermogenic methane in some closed pores.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Ilhwan Park, Yuki Kanazawa, Naoya Sato, Purevdelger Galtchandmani, Manis Kumar Jha, Carlito Baltazar Tabelin, Sanghee Jeon, Mayumi Ito, Naoki Hiroyoshi
Summary: Global demand for rare earth elements is expected to increase, especially for renewable energy and clean storage technologies. This study successfully upgraded low-grade rare earth ore from the Khalzan Buregtei deposit in Mongolia using magnetic separation techniques.
Article
Environmental Sciences
Casey Oliver A. Turingan, Kristina S. Cordero, Aileen L. Santos, Gillian Sue L. Tan, Carlito B. Tabelin, Richard D. Alorro, Aileen H. Orbecido
Summary: This study investigates the treatment of acid mine drainage (AMD) using waste-derived materials such as mine waste, concrete waste, and limestone. The results show that mine waste is effective in removing heavy metals and sulfates, while concrete waste significantly increases the pH of the AMD.
Article
Geochemistry & Geophysics
Marthias Silwamba, Mayumi Ito, Naoki Hiroyoshi, Carlito Baltazar Tabelin, Ryota Hashizume, Tomoki Fukushima, Ilhwan Park, Sanghee Jeon, Toshifumi Igarashi, Tsutomu Sato, Imasiku Nyambe, Hokuto Nakata, Shouta Nakayama, Mayumi Ishizuka
Summary: Zinc plant leach residues (ZPLRs) have economic importance and environmental impacts due to the presence of hazardous heavy metals. This study investigated the extraction and recovery of lead (Pb) and zinc (Zn) from ZPLRs using alkaline leaching and aluminum metal powder. The results showed that Pb and Zn removal efficiencies increased with NaOH concentration and decreased solid-to-liquid ratio. The addition of aluminum metal powder resulted in the cementation of dissolved Pb and Zn, with iron oxide minerals suppressing the cementation of Zn.
Article
Geochemistry & Geophysics
Ivyleen C. Bernardo-Arugay, Fel Jane A. Echavez, Rae Homer L. Aquiatan, Carlito B. Tabelin, Raymond V. Rivera Virtudazo, Vannie Joy T. Resabal
Summary: Siltation is the major challenge in nickel laterite mining in the Philippines. Mining companies construct siltation ponds to collect the surface runoff, but this causes environmental hazards such as landslides and heavy metal release. Repurposing nickel mine waste for ceramic applications is a promising approach as it reduces waste volume and creates valuable materials.
Article
Chemistry, Multidisciplinary
Cris Edward F. Monjardin, Delia B. Senoro, Jeffersen James M. Magbanlac, Kevin Lawrence M. de Jesus, Carlito B. Tabelin, Pablito M. Natal
Summary: This paper presents the effects of flooding on the accumulation of manganese in soils near the Boac and Mogpog rivers in Marinduque, Philippines. The results show that flooding promotes manganese contamination in floodplain soils, and there is a correlation between manganese concentrations and flood heights. The study provides valuable information for relevant agencies to plan intervention and remediation strategies.
APPLIED SCIENCES-BASEL
(2022)
Article
Green & Sustainable Science & Technology
Elham Aghaei, Bogale Tadesse, Carlito Baltazar Tabelin, Richard Diaz Alorro
Summary: The Fe-Al bimetallic material has shown great potential in eliminating mercury pollution from gold processing wastewaters, with a high removal efficiency achieved under varying conditions. The removal mechanism involves a redox reaction and adsorption by Fe oxy-hydroxides.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Delia B. Senoro, Kevin Lawrence M. de Jesus, Ronnel C. Nolos, Ma Rowela L. Lamac, Khainah M. Deseo, Carlito B. Tabelin
Summary: The domestic water quality of an island province in the Philippines that experienced two major mining disasters in the 1990s was assessed. The results showed that the water sources were heavily polluted, with significant health risks associated with arsenic and lead.
Article
Microbiology
Akio Ueno, Satoshi Tamazawa, Shuji Tamamura, Takuma Murakami, Tamotsu Kiyama, Hidenori Inomata, Noritaka Aramaki, Kunihiko Yoshida, Shinji Yamaguchi, Hideo Aoyama, Takeshi Naganuma, Toshifumi Igarashi
Summary: This study reported the effective conversion of chemically solubilized lignite into methane using methanogenic consortia. Adding pulverized lignite as conductive material significantly increased methane production by approximately 50-fold. This method provides an effective utilization of the neglected subterranean lignite resource.
Article
Environmental Studies
Jenna Jade Isacowitz, Susanne Schmeidl, Carlito Tabelin
Summary: There is often a disconnect between the intended 'triple bottom line' of mining companies and their actual actions, as corporate social responsibility (CSR) is primarily driven by shareholder interests rather than genuine conviction. Standardized frameworks and metrics are needed to accurately evaluate the impact of CSR activities.
Article
Geochemistry & Geophysics
Einstine M. Opiso, Carlito Baltazar Tabelin, Christian V. Maestre, John Paul J. Aseniero, Takahiko Arima, Mylah Villacorte-Tabelin
Summary: The repurposing of gold mine tailings through alkali activation technology has potential for waste reduction in developing countries. Palm oil fuel ash was used as an admixture to synthesize a geopolymer composite from ASGM tailings, improving its strength and ability to immobilize toxic elements.
Article
Social Sciences, Interdisciplinary
Dennis Alonzo, Carlito Baltazar Tabelin, Irish Mae Dalona, Arnel Beltran, Aileen Orbecido, Mylah Villacorte-Tabelin, Vannie Joy Resabal, Michael Angelo Promentilla, Pablo Brito-Parada, Yves Plancherel, Anne D. Jungblut, Robin Armstrong, Ana Santos, Paul F. Schofield, Richard Herrington
Summary: The rehabilitation of legacy mines is challenging due to difficulties in ensuring their safety and productivity, as well as lack of participation from the local community. To address these issues, the Bio + Mine project focuses on rehabilitating the abandoned Sto. Nino copper mine in the Philippines, using a social-ecological-technological system framework. The project aims to develop an inclusive mitigation strategy based on local knowledge and practices, which can be a model for other mines worldwide.
INTERNATIONAL JOURNAL OF QUALITATIVE METHODS
(2023)
Article
Green & Sustainable Science & Technology
Pongsiri Julapong, Jiraphon Ekasin, Pattaranun Katethol, Palot Srichonphaisarn, Onchanok Juntarasakul, Apisit Numprasanthai, Carlito Baltazar Tabelin, Theerayut Phengsaart
Summary: Microplastics (MPs) are problematic pollutants in the environment and their removal is challenging. This study proposes the use of agglomeration-flotation technique using kerosene to enlarge the particle size of MPs and enhance their floatability. Experimental results show that kerosene can significantly improve flotation efficiency, especially for high-density plastics.
