Okawa Hirokazu

オオカワヒロカズ | Okawa Hirokazu

Affiliation and department：
Homepage URL (1)： http://www.mine.akita-u.ac.jp/rpue/

Research field (1)： Earth resource engineering, energy science

Research keywords (8)：超音波化学 , 資源有効利用 , 資源・生産・環境学 , electrochemistry , Resource inorganic material chemistry , Environment , Production , Resource

Research theme for competitive and other funds (10)：

2022 - 2025 Desorption of CO2 from amine solutions at low temperature using difference of adsorption rate and desorption rate for CO2 under ultrasound irradiation
2020 - 2023 Formulation of formula to estimate soil CO2 gas flux considering climate and weather and its increase rate with global warming
2019 - 2023 Simultaneous recovery and desulfurization of bitumen from oil sand at low temperature using ultrasound
2015 - 2019 Desorption of Carbon Dioxide from Monoethanolamine Solution at Low Temperature Using Low Frequency Ultrasound
2009 - 2011 オイルサンドからのビチューメン簡易抽出方法に関する研究

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Papers (80)：

Dorcas Linda Ernesto Uaciquete, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara, Risehiro Nonaka. Elution behavior of mercury in desulfurization gypsum produced in a coal-fired power plant. Fuel. 2023. 334. 126761-126761
Takahiro Kato, Dorcas L. E. Uaciquete, Gai Onodera, Hirokazu Okawa, Katsuyasu Sugawara, Nakorn Worasuwannarak. Changes in the sulfur forms of subbituminous coals during oxidation with hydrogen peroxide and peracetic acid. FUEL. 2022. 330
Yuya Kitamura, Hirokazu Okawa, Kozo Shinoda, Takahiro Kato, Katsuyasu Sugawara. Synthesis of porous γ-Fe₂O₃ from scorodite synthesized using ultrasound irradiation and evaluation of its battery performance. Japanese Journal of Applied Physics. 2022. 61. SG. SG1056-SG1056
Dorcas L.E. Uaciquete, Kosuke Sakusabe, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara, Risehiro Nonaka. Influence of unburned carbon on mercury chemical forms in fly ash produced from a coal-fired power plant. Fuel. 2021. 300. 120802-120802
Hirokazu Okawa, Hiroyasu Ito, Tatsuo Fujiwara, Yuya Kitamura, Takahiro Kato, Katsuyasu Sugawara. Utilization of tertiary amine solutions and ultrasound irradiation for CO2 desorption at low temperature in a CCS process. Japanese Journal of Applied Physics. 2021. 60. SD

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MISC (48)：

Takahiro Kato, Kosuke Sakusabe, Yuuki Mochizuki, Hirokazu Okawa, Katsuyasu Sugawara. Regeneration of spent denitration catalyst of coal fired power plant. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2019. 258
大川浩一, 藤原達央, 田中恒祐, 加藤貴宏, 菅原勝康. ソノケミストリー低濃度モノエタノールアミン溶液からのCO2脱離を目的とした超音波照射と塩化カルシウムの利用. 超音波techno. 2016. 28. 4. 61-65
Kitamura Yuya, Okawa Hirokazu, Kato Takahiro, Sugawara Katsuyasu. 1P4-11 Effect of reaction temperature on the size and morphology of scorodite synthesized using ultrasound irradiation. Proceedings of Symposium on Ultrasonic Electronics. 2015. 36. "1P4-11-1"-"1P4-11-2"
Fujiwara Tatsuo, Okawa Hirokazu, Kato Takahiro, Sugawara Katsuyasu. 1P4-10 Synthesis of calcite-type calcium carbonate using monoethanolamine and calcium chloride under ultrasound irradiation. Proceedings of Symposium on Ultrasonic Electronics. 2015. 36. "1P4-10-1"-"1P4-10-2"
Okawa Hirokazu, Nishi Kentaro, Kawai Naosuke, Kawamura Youhei, Sugawara Katsuyasu. 2P4-10 The Effect of Temperature in Underground Mining on the Dust Control using Ultrasonic Atomization. Proceedings of Symposium on Ultrasonic Electronics. 2015. 36. "2P4-10-1"-"2P4-10-2"

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Patents (11)：

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Lectures and oral presentations (15)：

Synthesis of LiFePO4 cathode material for lithium ion battery using sonochemical oxidation method
(The International Workshop on Advanced Sonochemistry 2011)
Influence of air humidity on dust control using ultrasound atomization
(USE2011 2011)
世界の開発競争の一翼を担う技術を目指した、超音波利用による低コスト・高性能リチウム電池用鉄系正極材料の開発
(科学・技術フェスタ in 京都平成22年度産学官連携推進会議 2010)
地域・地球環境研究会の産学官連携活動と共同研究事例の紹介
(秋田大学,秋田大学主催、日本イオン交換学会、日本海水学会、電気透析および膜技術研究会共催、第1回産・学・学会ジョイントセミナー 2009)
超音波特殊反応場を利用した懸濁液中微粒子の沈殿方法
(新技術説明会 2008)

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Works (9)：

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Professional career (1)：

Work history (1)：

Committee career (5)：

Awards (2)：

Association Membership(s) (7)：

地域・地球環境研究会 , 環境資源工学会 , ソノケミストリー学会 , 日本化学会 , 資源素材学会 , 電気化学会 , 日本希土類学会

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