Utilization of geothermal hot spring water for hydrogen production by Al-H2O hydrothermal reaction

Vani Novita Alviani; Takuya Kosaka; Masaoki Uno; Masahiro Oba; Nobuo Hirano; Noriaki Watanabe; Noriyoshi Tsuchiya; Hanae Saishu

doi:10.11367/grsj.41.101

Utilization of geothermal hot spring water for hydrogen production by Al-H₂O hydrothermal reaction

Vani Novita Alviani, Takuya Kosaka, Masaoki Uno, Masahiro Oba, Nobuo Hirano, Noriaki Watanabe, Noriyoshi Tsuchiya, Hanae Saishu

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The feasibility of using hot spring water for hydrogen production via hydrothermal reaction with aluminum was evaluated by performing experiments at Zao and Tamagawa hot springs in Northeast Japan. The results of the study demonstrate the viability of the proposed method for advanced direct geothermal energy use. The amount of hydrogen produced using Tamagawa hot spring water (pH 0.88, 50 °C) was higher than that produced using Zao hot spring water (pH 1.60, 50 °C). Moreover, numerical simulation of the Al-H2O reaction at various temperature and pH conditions produced results consistent with experiments for both Zao and Tamagawa hot springs. The results of experiments and simulation indicated that pH is more significant than that of temperature for determining the amount of hydrogen generation.

Original language	English
Pages (from-to)	101-107
Number of pages	7
Journal	Journal of the Geothermal Research Society of Japan
Volume	41
Issue number	3
DOIs	https://doi.org/10.11367/grsj.41.101
Publication status	Published - 2019

Keywords

Aluminum
Direct geothermal use
Hot spring
Hydrogen production
Tamagawa

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.11367/grsj.41.101

Cite this

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title = "Utilization of geothermal hot spring water for hydrogen production by Al-H2O hydrothermal reaction",

abstract = "The feasibility of using hot spring water for hydrogen production via hydrothermal reaction with aluminum was evaluated by performing experiments at Zao and Tamagawa hot springs in Northeast Japan. The results of the study demonstrate the viability of the proposed method for advanced direct geothermal energy use. The amount of hydrogen produced using Tamagawa hot spring water (pH 0.88, 50 °C) was higher than that produced using Zao hot spring water (pH 1.60, 50 °C). Moreover, numerical simulation of the Al-H2O reaction at various temperature and pH conditions produced results consistent with experiments for both Zao and Tamagawa hot springs. The results of experiments and simulation indicated that pH is more significant than that of temperature for determining the amount of hydrogen generation.",

keywords = "Aluminum, Direct geothermal use, Hot spring, Hydrogen production, Tamagawa",

author = "Alviani, {Vani Novita} and Takuya Kosaka and Masaoki Uno and Masahiro Oba and Nobuo Hirano and Noriaki Watanabe and Noriyoshi Tsuchiya and Hanae Saishu",

note = "Funding Information: We would like to acknowledge the Fukushima Renewable Energy Institute, the National Institute of Advanced Industrial Science and Technology (FREA, AIST), Senboku City Government, and the Tsuruya Hotel (Zao Hot Spring) owner for supporting this research. We also would like to thank two anonymous reviewers; whose critical comments and valuable suggestions were very helpful in improving the quality of our manuscript. Lastly, the first author would like to extend gratitude to Dr. Putri Setiani for having valuable discussions. Publisher Copyright: {\textcopyright} The Geothermal Research Society of Japan, 2019.",

year = "2019",

doi = "10.11367/grsj.41.101",

language = "English",

volume = "41",

pages = "101--107",

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AU - Alviani, Vani Novita

AU - Kosaka, Takuya

AU - Uno, Masaoki

AU - Oba, Masahiro

AU - Hirano, Nobuo

AU - Watanabe, Noriaki

AU - Tsuchiya, Noriyoshi

AU - Saishu, Hanae

N1 - Funding Information: We would like to acknowledge the Fukushima Renewable Energy Institute, the National Institute of Advanced Industrial Science and Technology (FREA, AIST), Senboku City Government, and the Tsuruya Hotel (Zao Hot Spring) owner for supporting this research. We also would like to thank two anonymous reviewers; whose critical comments and valuable suggestions were very helpful in improving the quality of our manuscript. Lastly, the first author would like to extend gratitude to Dr. Putri Setiani for having valuable discussions. Publisher Copyright: © The Geothermal Research Society of Japan, 2019.

PY - 2019

Y1 - 2019

N2 - The feasibility of using hot spring water for hydrogen production via hydrothermal reaction with aluminum was evaluated by performing experiments at Zao and Tamagawa hot springs in Northeast Japan. The results of the study demonstrate the viability of the proposed method for advanced direct geothermal energy use. The amount of hydrogen produced using Tamagawa hot spring water (pH 0.88, 50 °C) was higher than that produced using Zao hot spring water (pH 1.60, 50 °C). Moreover, numerical simulation of the Al-H2O reaction at various temperature and pH conditions produced results consistent with experiments for both Zao and Tamagawa hot springs. The results of experiments and simulation indicated that pH is more significant than that of temperature for determining the amount of hydrogen generation.

AB - The feasibility of using hot spring water for hydrogen production via hydrothermal reaction with aluminum was evaluated by performing experiments at Zao and Tamagawa hot springs in Northeast Japan. The results of the study demonstrate the viability of the proposed method for advanced direct geothermal energy use. The amount of hydrogen produced using Tamagawa hot spring water (pH 0.88, 50 °C) was higher than that produced using Zao hot spring water (pH 1.60, 50 °C). Moreover, numerical simulation of the Al-H2O reaction at various temperature and pH conditions produced results consistent with experiments for both Zao and Tamagawa hot springs. The results of experiments and simulation indicated that pH is more significant than that of temperature for determining the amount of hydrogen generation.

KW - Aluminum

KW - Direct geothermal use

KW - Hot spring

KW - Hydrogen production

KW - Tamagawa

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