Journal ArticleDOI
Pyrite oxidation in the presence of hematite and alumina: II. Effects on the cathodic and anodic half-cell reactions
Carlito Baltazar Tabelin,Suchol Veerawattananun,Mayumi Ito,Naoki Hiroyoshi,Toshifumi Igarashi +4 more
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TLDR
The results point to the cathodic half-cell reaction as the rate determining-step of the overall oxidative dissolution process and the presence of hematite and alumina during pretreatment had strong effects on the electrochemical properties of pyrite.About:
This article is published in Science of The Total Environment.The article was published on 2017-03-01. It has received 72 citations till now. The article focuses on the topics: Hematite & Redox.read more
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A review of recent strategies for acid mine drainage prevention and mine tailings recycling.
Ilhwan Park,Carlito Baltazar Tabelin,Sanghee Jeon,Xinlong Li,Kensuke Seno,Mayumi Ito,Naoki Hiroyoshi +6 more
TL;DR: In this review, recent advances in AMD prevention techniques like oxygen barriers, utilization of bactericides, co-disposal and blending, and passivation of sulfide minerals are discussed and recycling of mine tailings as construction and geopolymer materials to reduce the amounts of wastes for disposal are introduced.
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Arsenic, selenium, boron, lead, cadmium, copper, and zinc in naturally contaminated rocks: A review of their sources, modes of enrichment, mechanisms of release, and mitigation strategies.
Carlito Baltazar Tabelin,Toshifumi Igarashi,Mylah Villacorte-Tabelin,Ilhwan Park,Einstine M. Opiso,Mayumi Ito,Naoki Hiroyoshi +6 more
TL;DR: This review summarized all available studies in the literature about the factors and processes crucial in the enrichment, release, and migration of the most commonly encountered hazardous and toxic elements in naturally contaminated geological materials to focus on naturally contaminated rocks.
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Acid mine drainage formation and arsenic mobility under strongly acidic conditions: Importance of soluble phases, iron oxyhydroxides/oxides and nature of oxidation layer on pyrite
Carlito Baltazar Tabelin,Ryan D. Corpuz,Toshifumi Igarashi,Mylah Villacorte-Tabelin,Richard Diaz Alorro,Kyoungkeun Yoo,Simit Raval,Mayumi Ito,Naoki Hiroyoshi +8 more
TL;DR: This study observed the formation of a mechanically 'strong' coating on pyrite that suppressed the mineral's oxidation, and found that As mobility under acidic conditions was limited by its precipitation as ferric arsenate, scorodite, or a Fe/Al arsenate phase, including its strong adsorption to Fe-oxyhydroxides/oxides.
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Towards a low-carbon society: A review of lithium resource availability, challenges and innovations in mining, extraction and recycling, and future perspectives
Carlito Baltazar Tabelin,J.A. Dallas,Sophia Casanova,Timothy M. Pelech,Ghislain Bournival,Serkan Saydam,Ismet Canbulat +6 more
TL;DR: The demand for lithium has skyrocketed in recent years primarily due to three international treaties (Kyoto Protocol, Paris Agreement and UN Sustainable Development Goals) as mentioned in this paper, all of which are pushing for the integration of more renewable energy and clean storage technologies in the transportation and electric power sectors to curb CO2 emissions and limit the adverse effects of CO2-promoted climate change.
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Copper and critical metals production from porphyry ores and E-wastes: A review of resource availability, processing/recycling challenges, socio-environmental aspects, and sustainability issues
Carlito Baltazar Tabelin,Ilhwan Park,Theerayut Phengsaart,Sanghee Jeon,Mylah Villacorte-Tabelin,Dennis Alonzo,Kyoungkeun Yoo,Mayumi Ito,Naoki Hiroyoshi +8 more
TL;DR: In this article, a critical analysis of ore distribution/processing, metal extraction, E-waste generation and Ewaste recycling is presented, focusing on identifying challenges and how to address them with emerging technologies and sustainable socio-environmental strategies.
References
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A review of the source, behaviour and distribution of arsenic in natural waters
TL;DR: The scale of the problem in terms of population exposed to high As concentrations is greatest in the Bengal Basin with more than 40 million people drinking water containing ‘excessive’ As as mentioned in this paper.
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Aqueous pyrite oxidation by dissolved oxygen and by ferric iron
TL;DR: In this paper, rates of aqueous, abiotic pyrite oxidation were measured in oxygen-saturated and anaerobic Fe(III)-saturated solutions with initial pH from 2 to 9.
Initiation of aqueous pyrite oxidation by dissolved oxygen and by ferric iron
TL;DR: In this article, the authors studied aqueous, abiotic pyrite oxidation in oxygen-saturated and anaerobic Fe(III)-saturated systems, and they concluded that Fe is the more important, direct oxidant of pyrites, which is supported by theoretical consideration regarding the low probability of a direct reaction between paramagnetic molecular oxygen and diamagnetic disulfide.
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The kinetics and electrochemical rate-determining step of aqueous pyrite oxidation
TL;DR: In this article, a series of batch and mixed flow reactor experiments were performed to determine the effect of SO42−, Cl−, ionic strength, and dissolved oxygen on the rate of reaction of pyrite with ferric iron.