| 1. |
Shota Kondo, Naoko Okibe, Effect of microbial community and solution redox potential on the bioleaching of tennantite concentrate, International Symposium on Earth Science and Technology 2023, 2023.11. |
| 2. |
Yuika Kawazoe, Yuya Sato, Taiki Katayama, Tetsuo Yasutaka, Naoko Okibe, Combination of microbial As(III) oxidation and waste Fe-sludge for As removal
, International Symposium on Earth Science and Technology 2023, 2023.11. |
| 3. |
Idol Phann, Naoko Okibe, Selective recovery of critical metals from spent catalysts, International Symposium on Earth Science and Technology 2023, 2023.11. |
| 4. |
Kasun Godigamuwa, Naoko Okibe, The synergistic effect of the glycine-thiosulfate system for gold leaching
, International Symposium on Earth Science and Technology 2023, 2023.11. |
| 5. |
Brian Kisia Nzuki, Kasun Godigamuwa, Naoko Okibe, Organic leaching of refractory nickel laterite ore, International Symposium on Earth Science and Technology 2023, 2023.11. |
| 6. |
Peiyu Liu, Naoko Okibe, Reuse of Fe- and Mn-sludge wastes for As remediation, International Symposium on Earth Science and Technology 2023, 2023.11. |
| 7. |
Sae Yamamoto, Idol Phann, Naoko Okibe, Use of amino acids for selective Cu leaching from waste printed circuit boards, The 2nd International Conference on earth Resources and Geo-environment Technology (EraGET) 2023 , 2023.09. |
| 8. |
Kazuma Kimura, Yuika Kawazoe, Yusei Masaki, Kengo Horiuchi, Takaya Hamai, Naoko Okibe, Removal and stabilization of As(V) by reusing Fe-sludge waste, The 2nd International Conference on earth Resources and Geo-environment Technology (EraGET) 2023, 2023.09. |
| 9. |
Naoko Okibe, Microbiological treatment of metal-contaminated waters, The 2nd International Conference on earth Resources and Geo-environment Technology (EraGET) 2023, 2023.09. |
| 10. |
Taiki Kondo, Naoko Okibe, Biotreatment of Mn/Zn-containing mine water, International Symposium on Earth Science and Technology 2022, 2022.12. |
| 11. |
Yuika Kawazoe, Kazuma Kimura, Naoko Okibe, Waste Fe-sludge from the mine-water treatment plant as a promising adsorbent for As, International Symposium on Earth Science and Technology 2022, 2022.12. |
| 12. |
Idol Phann, Sae Yamamoto, Naoko Okibe, Selective dissolution of molybdenum and cobalt from spent hydrodesulfurization catalysts using amino acid
, International Symposium on Earth Science and Technology 2022, 2022.12. |
| 13. |
Yuika Kawazoe, KazumaKimura1, KengoHoriuchi, Takaya Hamai, Naoko Okibe, Reusing the passive treatment Fe-sludge for the remediation of As-bearing waters, International Biohydrometallurgy Symposium 2022, 2022.11. |
| 14. |
KaitoHayashi, Keishi Oyama, Kazuhiko Shimada, Yuji Aoki, Takahiro Suwa, Tsuyoshi Hirajima, Naoko Okibe, Carbon-assisted bioleaching of high arsenic-bearing “dirty” concentrates, International Biohydrometallurgy Symposium 2022, 2022.11. |
| 15. |
Naoko Okibe, Biotechnical treatment of metal-bearing mine/process waters , International Biohydrometallurgy Symposium 2022, 2022.11. |
| 16. |
Idol Phann, Naoko Okibe, Alkaline Amino Acid Leaching for Selective Recovery of Molybdenum and Cobalt from Spent Mo/Co-catalyst, 資源・素材学会, 2022.03. |
| 17. |
Kaito Hayashi, Yuji Aoki, Takahiro Suwa, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Activated carbon-assisted bioleaching of three types of Cu/As sulfide concentrates, International Symposium on Earth Science and Technology 2021, 2021.11. |
| 18. |
Idol Phann, Naoko Okibe, Organic leaching of spent Mo/Co-catalyst, International Symposium on Earth Science and Technology 2021, 2021.11. |
| 19. |
Taiki Kondo, Naoko Okibe, Passive treatment of Mn/Zn-bearing mine water using Mn2+-oxidizing bacteria, International Symposium on Earth Science and Technology 2021, 2021.11. |
| 20. |
Yu Tanaka, Naoko Okibe, Organic leaching of spent oil refinery catalyst for rare metal recovery, International Symposium on Earth Science and Technology 2020, 2020.11. |
| 21. |
Kohei Nonaka, Naoko Okibe, Chemical-microbiological synergistic treatment of Mn(II)-contaminating wastewater using “bioactive” birnessite
, International Symposium on Earth Science and Technology 2020, 2020.11. |
| 22. |
Keishi Oyama, Kyohei Takamatsu, Hajime Miki, Naoko Okibe, Comparison on the catalytic mechanism of activated carbon in bioleaching of chalcopyrite and enargite, International Symposium on Earth Science and Technology 2019, 2019.12. |
| 23. |
Haruki Noguchi, Naoko Okibe, Importance of sulfur oxidizing microorganisms for chalcopyrite bioleaching with saline water, International Symposium on Earth Science and Technology 2019, 2019.12. |
| 24. |
Ryohei Nishi, Santisak Kitjanukit, Kohei Nonaka, Naoko Okibe, Synergistic effects of biogenic manganese oxide and Mn(II)-oxidizing bacteria on the oxidation of arsenite, International Symposium on Earth Science and Technology 2019, 2019.12. |
| 25. |
Yu Tanaka, Naoko Okibe, Characterization and acid leaching behavior of spent Mo/Co-catalyst, International Symposium on Earth Science and Technology 2019, 2019.12. |
| 26. |
Santisak Kitjanukit, Naoko Okibe, Mn(II) oxidative removal using the bio-activated carbon column, International Biohydrometallurgy Symposium 2019, 2019.10. |
| 27. |
Ryohei Nishi, Santisak Kitjanukit, Naoko Okibe, Oxidative removal of arsenite using biogenic manganese oxide, International Biohydrometallurgy Symposium 2019, 2019.10. |
| 28. |
Haruki Noguchi, Naoko Okibe, Effect of salinity on bioleaching of chalcopyrite concentrate, International Biohydrometallurgy Symposium 2019, 2019.10. |
| 29. |
Naoko Okibe, Microbiological removal of arsenic from mining impacted waters, International Biohydrometallurgy Symposium 2019, 2019.10. |
| 30. |
Keishi Oyama, Kyohei Takamatsu, Hajime Miki, Keiko Sasaki, Naoko Okibe, Carbon-assisted bioleaching of primary copper sulfides, International Biohydrometallurgy Symposium 2019, 2019.10. |
| 31. |
Yu Tanaka, Naoko Okibe, Thiourea bioleaching for gold and silver recycling from PCB, International Biohydrometallurgy Symposium 2019, 2019.10. |
| 32. |
Keishi Oyama, Hajime Miki, Naoko Okibe, Evaluation of Catalytic Effect of Activated Carbon on Enargite Bioleaching, International Symposium on Earth Science and Technology 2018, 2018.11. |
| 33. |
Kyohei Takamatsu, Keishi Oyama, Hajime Miki, Naoko Okibe, Carbon-assisted bioleaching of chalcopyrite concentrate, International Symposium on Earth Science and Technology 2018, 2018.11. |
| 34. |
Santisak Kitjanukit, Naoko Okibe, Synergistic effect of natural Mn oxide, activated carbon and Mn(II)-oxidizing bacteria on oxidative removal of Mn(II) from wastewaters, International Symposium on Earth Science and Technology 2018, 2018.11. |
| 35. |
Haruki Noguchi, Naoko Okibe, Saline water bioleaching of refractory chalcopyrite concentrate, International Symposium on Earth Science and Technology 2018, 2018.11. |
| 36. |
Yusuke Hotta, Naoko Okibe, Oxidative removal of arsenic using activated carbon, International Symposium on Earth Science and Technology 2018, 2018.11. |
| 37. |
Ryohei Nishi, Santisak Kitjanukit, Naoko Okibe, Oxidation and immobilization of arsenite using biogenic manganese oxide
, International Symposium on Earth Science and Technology 2018, 2018.11. |
| 38. |
Yusuke Hotta, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Activated carbon-assisted oxidation and immobilization of highly toxic arsenite, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 39. |
Kyohei Takamatsu, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbiological redox control for bioleaching of chalcopyrite concentrate, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 40. |
Ryohei Nishi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of seed feeding and oxygen supply on bioscorodite crystallization, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 41. |
Melisa Pramesti Dewi, Himawan Tri Bayu Murti Petrus, Naoko Okibe, Recovery of rare-earth element from spent hydroprocessing catalyst, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 42. |
Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Low-temperature bioscorodite formation for As(III) removal, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 43. |
Keishi Oyama, Haruki Noguchi, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Catalytic effect of activated carbon on bioleaching of enargite concentrate, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 44. |
Santisak Kitjanukit, Kyohei Takamatsu, Kenji Takeda, Satoshi Asano, Naoko Okibe, Isolation and characterization of a new Mn(II)-oxidizing bacterial strain from Mn-containing metal-refinery wastewater deposit, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 45. |
Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Behavior of Sulfate Ion during Formation of Bioscorodite for Arsenite Immobilization, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 46. |
Intan Nurul Rizki, Tsuyoshi Hirajima, Naoko Okibe, Bioleaching and recovery of gold from E-waste, International Symposium on Earth Science and Technology 2017, 2017.11. |
| 47. |
Naoko Okibe, New insights in bio-mineral processing to enable utilization of refractory low-grade minerals, Mineral Processing and Technology International Conference 2017 (Mineprocet '17), 2017.10. |
| 48. |
Santisak Kitjanukit, Kyohei Takamatsu, Kenji Takeda, Satoshi Asano, Naoko Okibe, Manganese Removal from Metal Refinery Wastewater using Mn(II)-oxidizing Bacteria
, International Biohydrometallurgy Symposium 2017, 2017.09. |
| 49. |
Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbiological As(III) oxidation and immobilization as scorodite at moderate temperatures, International Biohydrometallurgy Symposium 2017, 2017.09. |
| 50. |
Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Optimization of Bioscorodite Crystallization for Treatment of As(III)-bearing Wastewaters, International Biohydrometallurgy Symposium 2017, 2017.09. |
| 51. |
Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe
, Mechanism of silver-catalyzed bioleaching of enargite concentrate, International Biohydrometallurgy Symposium 2017, 2017.09. |
| 52. |
Melisa Pramesti Dewi, Himawan Petrus, Naoko Okibe
, Characterization and Acid Leaching of Spent Hydroprocessing Catalyst for Valuable Metal Recovery, Earth 2017, 2017.09. |
| 53. |
Intan Nurul Rizki, Tsuyoshi Hirajima, Naoko Okibe, Microbiological Potential for Gold Leaching and Recovery from E-waste, Earth 2017, 2017.09. |
| 54. |
Kyohei Takamatsu, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Optimization of microbiological redox potential control in chalcopyrite bioleaching, Earth 2017, 2017.09. |
| 55. |
Yusuke Hotta, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, As(III) oxidation and immobilization by activated carbon, Earth 2017, 2017.09. |
| 56. |
Santisak Kitjanukit, 平島 剛, 笹木 圭子, 沖部 奈緒子, 超好酸性古細菌 Sulfolobus tokodaii によるバイオパラジウムナノ粒子の生成, 資源・素材学会, 2017.03. |
| 57. |
Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, The effect of microbiological redox potential control on Cu extraction in the chalcopyrite bioleaching system, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 58. |
Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Evaluating factors affecting bioscorodite crystallization from As(III)-bearing acidic metal refinery wastewaters, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 59. |
Katsutoshi Tsutsumi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Recovery of nickel via reductive bioleaching of Indonesian limonite ore, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 60. |
Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Arsenic immobilization as bioscorodite at moderate temperatures, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 61. |
Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Investigating catalytic effect of silver on bioleaching of enargite concentrate
, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 62. |
Santisak Kitjanukit, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbially Facilitated Formation of Highly Catalytic Pd(0) Nanoparticles Using an Extremely Acidophilic Archaeon, Sulfolobus tokodaii, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 63. |
Takahiro Matsumoto, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Biorecovery of Pt(0)-nanoparticles using extremely acidophilic Fe(III)-reducing bacteria, International Symposium on Earth Science and Technology 2016, 2016.12. |
| 64. |
Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Chalcopyrite bioleaching with redox potential control, Copper 2016, 2016.11. |
| 65. |
Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Selective bioleaching of enargite (Cu3AsS4) over pyrite (FeS2) for copper recovery, Copper 2016, 2016.11. |
| 66. |
Masahito Tanaka, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Bioscorodite crystallization for treatment of As(III)-bearing copper refinery wastewaters, Copper 2016, 2016.11. |
| 67. |
Naoko Okibe, Biohydrometallurgy for mineral processing and environmental remediation: State of the art and the development, International Symposium on Environment and Resource Recycling Technology 2016, 2016.03. |
| 68. |
Yuken Fukano, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Mechanism of indirect chemical oxidation of highly toxic As(III), in the presence of carbon fiber via direct microbial Fe(II) oxidation, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 69. |
Daisuke Nakayama, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Investigating factors affecting the size and distribution of Bio-Pd(0) nanoparticles, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 70. |
Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Selective bioleaching of enargite (Cu3AsS4) over pyrite (FeS2) for Cu recovery, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 71. |
Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Kazuhiro Hatano, Atsuko Ohata, Naoko Okibe, Crystallization of biogenic scorodite (FeAsO4·2H2O) from acidic wastewaters containing diluted concentrations of highly toxic arsenite, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 72. |
Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Bioleaching of highly refractory chalcopyrite in the presence of silver catalyst, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 73. |
Santisak Kitjanukit, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Application of Fe(II)-oxidizing and Fe(III)-reducing abilities of the thermo-acidophilic archaeon, Sulfolobus tokodaii for bioleaching of waste printed circuit boards (WPCB) and formation of Pd(0)-nanoparticles, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 74. |
Katsutoshi Tsutsumi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of Fe(III)-reducing microbes on organic acid leaching of nickel laterite, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 75. |
Takahiro Matsumoto, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Formation of Pt(0) nanoparticles using the extremely acidophilic Fe(III)-reducing bacteria, International Symposium on Earth Science and Technology 2015, 2015.12. |
| 76. |
Naoko Okibe, Biohydrometallurgy for mineral processing and environmental remediation: State of the art and the development, sntki2015, 2015.10. |
| 77. |
Widi Astuti, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Utilization of metabolic citric acid from Aspergillus niger using corn starch in the nickel leaching of Indonesian saprolitic ore, International Biohydrometallurgy Symposium 2015, 2015.10. |
| 78. |
Yusei Masaki, Shin-ichi Hirano, Naoko Okibe, Microbial community structure analysis of Blood Pond Hell hot spring in Japan and search for metal-reducing microbes, International Biohydrometallurgy Symposium 2015, 2015.10. |
| 79. |
Naoko Okibe, Shiori Morishita, Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Effect of Cu(II) on bio-scorodite crystallization using Acidianus brierleyi, International Biohydrometallurgy Symposium 2015, 2015.10. |
| 80. |
Yusei Masaki, Katsutoshi Tsutsumi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbial community structure analysis of Chinoike-Jigoku (Blood-Pond Hell) hot spring and search for useful microorganisms applicable to bioremediation of heavy metals., International Symposium on Earth Science and Technology 2014, 2014.12. |
| 81. |
Shiori Morishita, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of Cu(II) on microbial scorodite crystallization from As(III)-containing copper refinery waste-waters., International Symposium on Earth Science and Technology 2014, 2014.12. |
| 82. |
Masahito Tanaka, Yuta Yamaji, Yuken Fukano, Tsuyoshi Hirajima, Keiko Sasaki, Mitsuru Sawada, Naoko Okibe, Biooxidation of Alaskan refractory gold ore concentrates, International Symposium on Earth Science and Technology 2014, 2014.12. |
| 83. |
Daisuke Nakayama, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Formation of Bio-Pd(0) nanoparticles using Fe(III)-reducing, extremely acidophilic bacteria., International Symposium on Earth Science and Technology 2014, 2014.12. |
| 84. |
Yuken Fukano, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Arsenite removal using acidophilic Fe(II)-oxidizing bacteria in the presence of carbon fiber., International Symposium on Earth Science and Technology 2014, 2014.12. |
| 85. |
Takahiro Matsumoto, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbial synthesis of platinum nanoparticles using extremely acidophilic iron-reducing bacteria., International Symposium on Earth Science and Technology 2014, 2014.12. |
| 86. |
Widi Astuti, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of leaching reagent on the atmospheric dissolution of indonesian saprolitic ore., International Symposium on Earth Science and Technology 2014, 2014.12. |
| 87. |
アストゥティ ウィディ, 平島 剛, 笹木 圭子, 沖部 奈緒子, 特性評価およびスラウェシ島（インドネシア）からのサプロライトラテライトの大気クエン酸浸出：ミネラル溶出挙動への洞察, 資源・素材学会, 2014.09. |
| 88. |
Naoko Okibe, Use of extremophiles for treatment of metal-polluted wastewaters, クリタ 水・環境科学研究 優秀賞成果発表講演, 2014.08. |
| 89. |
Naoko Okibe, Masahito Tanaka, Mitsuru Sawada, Keiko Sasaki, Tsuyoshi Hirajima, Biooxidation of Alaskan refractory gold ore concentrates, Biohydrometallurgy `14, 2014.06. |
| 90. |
Astuti Widi, 平島 剛, 笹木 圭子, 沖部 奈緒子, 大気圧下でのクエン酸によるハルマヘラ島（インドネシア）産低グレード褐鉄鉱鉱石のニッケル抽出, 資源・素材学会, 2014.03. |
| 91. |
Masahito Tanaka, Mitsuru Sawada, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Biooxidation of refractory gold ore concentrates using moderately thermophilic, acidophilic bacteria, International Conference on Biological, Civil, and Environmental Engineering (BCEE-2014), 2014.03. |
| 92. |
Naoko Okibe, Formation of biogenic scorodite (FeAsO4·2H2O) for treatment of As(III)-bearing copper refinery process solution, Biotechnology and Chemistry for GREEN GROWTH, 2014.03. |
| 93. |
Daisuke Nakayama, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Formation of Pd(0) nanoparticles by bioreduction of Pd(II) using Fe(III)-reducing, acidophilic bacteria, International Symposium on Earth Science and Technology 2013, 2013.12. |
| 94. |
Shiori Morishita, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, As(III)-oxidation activity of thermo-acidophilic iron sulfur-oxidizing archaeon, Acidianus brierleyi, and its use in biogenic scorodite (FeAsO4) formation, International Symposium on Earth Science and Technology 2013, 2013.12. |
| 95. |
Yusei Masaki, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Fundamental study on Cr(VI) reduction by acidophilic Fe(III)-reducing bacterium, International Symposium on Earth Science and Technology 2013, 2013.12. |
| 96. |
Masashi Maki, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Biorecovery of vanadium (V) using Fe(III)-reducing, acidophilic bacterium, Acidocella aromatica strain PFBC, International Symposium on Earth Science and Technology 2013, 2013.12. |
| 97. |
正木 悠聖, 沖部 奈緒子, 笹木 圭子, 平島 剛, 好酸性鉄還元細菌によるCr(VI)還元に関する基礎的研究, 資源・素材学会, 2013.09. |
