Search Results - "Toshifumi Igarashi"

The two-step neutralization ferrite-formation process for sustainable acid mine drainage treatment: Removal of copper, zinc and arsenic, and the influence of coexisting ions on ferritization by Igarashi, Toshifumi, Herrera, Pepe Salgado, Uchiyama, Hiroyuki, Miyamae, Hiroko, Iyatomi, Nobuyoshi, Hashimoto, Koichi, Tabelin, Carlito Baltazar

“…Acid mine drainage (AMD) or acid rock drainage (ARD), the most notorious environmental problem in many mines and underground construction sites, is generally…”
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Performance of pavements incorporating waste glass: The current state of the art by Jamshidi, Ali, Kurumisawa, Kiyofumi, Nawa, Toyoharu, Igarashi, Toshifumi

“…This paper discusses the engineering properties of waste glass (WG), including its structural and environmental performance, as an alternative material for the…”
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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 by Tabelin, Carlito Baltazar, Corpuz, Ryan D., Igarashi, Toshifumi, Villacorte-Tabelin, Mylah, Alorro, Richard Diaz, Yoo, Kyoungkeun, Raval, Simit, Ito, Mayumi, Hiroyoshi, Naoki

“…[Display omitted] •Interactions of pyrite, salts & metal oxides under acidic conditions were evaluated.•Soluble salts exhibited stronger effects on pyrite…”
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Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine by Mwandira, Wilson, Nakashima, Kazunori, Kawasaki, Satoru, Arabelo, Allison, Banda, Kawawa, Nyambe, Imasiku, Chirwa, Meki, Ito, Mayumi, Sato, Tsutomu, Igarashi, Toshifumi, Nakata, Hokuto, Nakayama, Shouta, Ishizuka, Mayumi

“…The present study investigated biosorption of Pb (II) and Zn (II) using a heavy metal tolerant bacterium Oceanobacillus profundus KBZ 3-2 isolated from a…”
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Long-term acid generation and heavy metal leaching from the tailings of Shimokawa mine, Hokkaido, Japan: Column study under natural condition by Khoeurn, Kimleang, Sakaguchi, Asumi, Tomiyama, Shingo, Igarashi, Toshifumi

“…The leaching from mine tailings results in contamination of nearby groundwaters and rivers by hazardous metals like copper (Cu), zinc (Zn), and iron (Fe). In…”
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Pyrite oxidation in the presence of hematite and alumina: I. Batch leaching experiments and kinetic modeling calculations by Tabelin, Carlito Baltazar, Veerawattananun, Suchol, Ito, Mayumi, Hiroyoshi, Naoki, Igarashi, Toshifumi

“…Pyrite is one of the most common and geochemically important sulfide minerals in nature because of its role in the redox recycling of iron (Fe). It is also the…”
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Acid mine drainage sources and hydrogeochemistry at the Yatani mine, Yamagata, Japan: A geochemical and isotopic study by Tomiyama, Shingo, Igarashi, Toshifumi, Tabelin, Carlito Baltazar, Tangviroon, Pawit, Ii, Hiroyuki

“…This paper describes the geochemistry of groundwater and its flow system in the closed Yatani mine in southern Yamagata Prefecture, Japan. The mine is located…”
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Effects of cement addition on arsenic leaching from soils excavated from projects employing shield-tunneling method by Ho, Gia Duc, Tabelin, Carlito Baltazar, Tangviroon, Pawit, Tamamura, Shuji, Igarashi, Toshifumi

“…•As leaching from soils involved in shield excavation was investigated.•Adsorption/desorption on Fe-surfaces is one of the major mechanisms of As leaching.•pH…”
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Solid-phase partitioning and release-retention mechanisms of copper, lead, zinc and arsenic in soils impacted by artisanal and small-scale gold mining (ASGM) activities by Tabelin, Carlito Baltazar, Silwamba, Marthias, Paglinawan, Florifern C., Mondejar, Alissa Jane S., Duc, Ho Gia, Resabal, Vannie Joy, Opiso, Einstine M., Igarashi, Toshifumi, Tomiyama, Shingo, Ito, Mayumi, Hiroyoshi, Naoki, Villacorte-Tabelin, Mylah

“…Artisanal and small-scale gold mining (ASGM) operations are major contributors to the Philippines’ annual gold (Au) output (at least 60%). Unfortunately, these…”
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Pyrite oxidation in the presence of hematite and alumina: II. Effects on the cathodic and anodic half-cell reactions by Tabelin, Carlito Baltazar, Veerawattananun, Suchol, Ito, Mayumi, Hiroyoshi, Naoki, Igarashi, Toshifumi

“…The oxidative dissolution of pyrite is an important process in the redox recycling of iron (Fe) and is well-known for its role in the formation of acid mine…”
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Leaching of boron, arsenic and selenium from sedimentary rocks: II. pH dependence, speciation and mechanisms of release by Tabelin, Carlito Baltazar, Hashimoto, Ayaka, Igarashi, Toshifumi, Yoneda, Tetsuro

“…Sedimentary rocks excavated in Japan from road- and railway-tunnel projects contain relatively low concentrations of hazardous trace elements like boron (B),…”
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Modeling of the groundwater flow system in excavated areas of an abandoned mine by Tomiyama, Shingo, Igarashi, Toshifumi, Tabelin, Carlito Baltazar, Tangviroon, Pawit, Ii, Hiroyuki

“…This study evaluated the assumption that back-filled excavated areas of old mine workings can be modeled as porous media, where groundwater flow is governed by…”
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State-of-the-art of interlocking concrete block pavement technology in Japan as a post-modern pavement by Jamshidi, Ali, Kurumisawa, Kiyofumi, White, Gregory, Nishizawa, Tatsuo, Igarashi, Toshifumi, Nawa, Toyoharu, Mao, Jize

“…•Post-modern pavement as a new concept for next pavement generation is introduced.•High structural performance, sustainability and social requirements are main…”
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Leaching of boron, arsenic and selenium from sedimentary rocks: I. Effects of contact time, mixing speed and liquid-to-solid ratio by Tabelin, Carlito Baltazar, Hashimoto, Ayaka, Igarashi, Toshifumi, Yoneda, Tetsuro

“…Sedimentary rocks of marine origin excavated in tunnel projects were recently identified as potentially hazardous because they could release significant…”
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Leaching of hazardous elements from Mozambican coal and coal ash by Marove, Carlos A., Tangviroon, Pawit, Tabelin, Carlito B., Igarashi, Toshifumi

“…Large-scale coal mining is being carried out in Tete province, Mozambique. This area is also being planned to become a large coal fired power production hub…”
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Short and long term release mechanisms of arsenic, selenium and boron from a tunnel-excavated sedimentary rock under in situ conditions by Tamoto, Shuichi, Tabelin, Carlito Baltazar, Igarashi, Toshifumi, Ito, Mayumi, Hiroyoshi, Naoki

“…Sedimentary rocks of marine origin excavated from tunnel construction projects usually contain background levels of hazardous trace elements, but when exposed…”
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Change in Arsenic Leaching from Silty Soil by Adding Slag Cement by Tangviroon, Pawit, Endo, Yuka, Fujinaka, Ryota, Kobayashi, Masato, Igarashi, Toshifumi, Yamamoto, Takahiro

“…Cementitious materials are commonly used to reinforce the bearing capacity of silty soils. However, there is very little data about how changes in arsenic (As)…”
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Solidification of sand by Pb(II)-tolerant bacteria for capping mine waste to control metallic dust: Case of the abandoned Kabwe Mine, Zambia by Mwandira, Wilson, Nakashima, Kazunori, Kawasaki, Satoru, Ito, Mayumi, Sato, Tsutomu, Igarashi, Toshifumi, Chirwa, Meki, Banda, Kawawa, Nyambe, Imasiku, Nakayama, Shouta, Nakata, Hokuto, Ishizuka, Mayumi

“…Environmental impacts resulting from historic lead and zinc mining in Kabwe, Zambia affect human health due to the dust generated from the mine waste that…”
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Groundwater monitoring of an open-pit limestone quarry: Water-rock interaction and mixing estimation within the rock layers by geochemical and statistical analyses by Eang, Khy Eam, Igarashi, Toshifumi, Kondo, Megumi, Nakatani, Tsurugi, Tabelin, Carlito Baltazar, Fujinaga, Ryota

“…Water-rock interaction and groundwater mixing are important phenomena in understanding hydrogeological systems and the stability of rock slopes especially…”
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Social cost of mining-related lead (Pb) pollution in Kabwe, Zambia, and potential remediation measures by Yamada, Daichi, Hiwatari, Masato, Narita, Daiju, Hangoma, Peter, Chitah, Bona, Nakata, Hokuto, Nakayama, Shouta M.M., Yabe, John, Ito, Mayumi, Igarashi, Toshifumi, Ishizuka, Mayumi, Zyambo, Golden

“…Lead (Pb) pollution has been one of the major environmental problems of worldwide significance. It is a latent factor for several fatal illnesses, whereas the…”
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