Kyushu University Institute for Asian and Oceanian Studies

kyusyu university

Faculty / ResearcherDE PANDHE WISNU SUYANTARA

GDE PANDHE WISNU SUYANTARA Special Appointed Assistant Professor (Tokunin Jokyo)

GDE PANDHE WISNU SUYANTARA Special Appointed Assistant Professor (Tokunin Jokyo)
  • Laboratory of Mineral Processing, Recycling, and Enviromental Remediation Department of Earth Resources Engineering, Faculty of Engineering Kyushu University, Fukuoka, Japan
  • pandhe@mine.kyushu-u.ac.jp
  • Specialty:Minerals processing; Minerals flotation; Separation technology; Surface chemistry; Surface analysis; Minerals extraction;

Career Summary:

2004 / 2009 Bachelor of Engineering
Department of Chemical Engineering, Faculty of Engineering, Gadjah Mada University, Yogyakarta, Indonesia
2009 / 2012 Master of Engineering
Department of Chemical Engineering, Faculty of Engineering, Gadjah Mada University, Yogyakarta, Indonesia
2014 / 2017 Doctor of Engineering in Mineral Processing
Graduate School of Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
Oct 2017 / Mar 2020 Postdoctoral Fellowship
Department or Earth Resouces Engineering, Kyushu University
April 2020 / Now Special Appointed Assistant Professor (Tokunin Jokyo)
Department or Earth Resouces Engineering, Kyushu University

Research:

My research mainly focuses on the extraction and separation of valuable minerals from various sources. I am using air bubbles to extract copper minerals through a method named flotation. I also investigated the possibility of using seawater and oxidation treatments as an alternative for the separation of copper and molybdenum minerals using flotation. I used various surface analyses such as X-ray photoelectron spectroscopy (XPS), zeta potential and contact angle measurements, and atomic force microscopy to explain the flotation behavior. Besides, I developed an image processing software to measure the bubble interactions with mineral surfaces. Currently, I focus on the separation of copper and arsenic-bearing copper minerals to reduce the harmful impact of arsenic in the mining operation and minimize arsenic contamination into the environment.

Relevant Countries in Asia & Oceania:

Indonesia, South Korea, China

Message:

“If you want to go fast, go alone; If you want to go far go together” (African Proverb). I am an open mind person and eager to try new things. Joining Q-AOS is one of the possibilities to connect and get involved with various people with various backgrounds and then go far beyond the border of each discipline, expand our perspective and knowledge. I am a photography enthusiast, Itoshima Peninsula and Kyushu University provide the best combination to photograph nature, people, culture, and academic atmosphere.

List of Selected Publications:

Peer reviewed journals:

  1. Tanaka Y., Miki, H., Suyantara, G.P.W., Aoki, Y., Hirajima, T., 2021, Mineralogical prediction on the flotation behavior of copper and molybdenum minerals from blended Cu-Mo ores in seawater. Minerals 11, 869.
  2. Suyantara, G.P.W., Hirajima, T., Miki, H., Sasaki, K., 2020. Bubble interactions with chalcopyrite and molybdenite surfaces in seawater. Minerals Engineering 157, 106536.
  3. Suyantara, G.P.W., Hirajima, T., Miki, H., Sasaki, K., Kuroiwa, S., Aoki, Y., 2020. Effect of H2O2 and potassium amyl xanthate on separation of enargite and tennantite from chalcopyrite and bornite using flotation. Minerals Engineering 152, 106371.
  4. Suyantara, G.P.W., Hirajima, T., Miki, H., Sasaki, K., 2018. Floatability of molybdenite and chalcopyrite in artificial seawater. Minerals Engineering 115, 117–130.
  5. Suyantara, G.P.W., Hirajima, T., Miki, H., Sasaki, K., Yamane, M., Takida, E., Kuroiwa, S., Imaizumi, Y., 2018. Effect of Fenton-like oxidation reagent on hydrophobicity and floatability of chalcopyrite and molybdenite. Colloids and Surfaces A: Physicochemical and Engineering Aspects 554, 34–48.
  6. Suyantara, G.P.W., Hirajima, T., Miki, H., Sasaki, K., Yamane, M., Takida, E., Kuroiwa, S., Imaizumi, Y., 2018. Selective flotation of chalcopyrite and molybdenite using H2O2 oxidation method with the addition of ferrous sulfate. Minerals Engineering 122, 312–326.
  7. Miki, H., Hirajima, T., Muta, Y., Suyantara, G.P.W., Sasaki, K., 2018. Effect of sodium sulfite on floatability of chalcopyrite and molybdenite. Minerals 8, 172.
  8. Miki, H., Matsuoka, H., Hirajima, T., Suyantara, G.P.W., Sasaki, K., 2017. Electrolysis oxidation of chalcopyrite and molybdenite for selective flotation. Materials Transactions 58, 761–767.
  9. Hirajima, T., Miki, H., Suyantara, G.P.W., Matsuoka, H., Elmahdy, A.M., Sasaki, K., Imaizumi, Y., Kuroiwa, S., 2017. Selective flotation of chalcopyrite and molybdenite with H2O2 oxidation. Minerals Engineering 100, 83–92.
  10. Hirajima, T., Suyantara, G.P.W., Ichikawa, O., Elmahdy, A.M., Miki, H., Sasaki, K., 2016. Effect of Mg2+ and Ca2+ as divalent seawater cations on the floatability of molybdenite and chalcopyrite. Minerals Engineering, Special Issue: Froth Flotation 96–97, 83–93.
  11. Suyantara, G.P.W., Hirajima, T., Elmahdy, A.M., Miki, H., Sasaki, K., 2016. Effect of kerosene emulsion in MgCl2 solution on the kinetics of bubble interactions with molybdenite and chalcopyrite. Colloids and Surfaces A: Physicochemical and Engineering Aspects 501, 98–113.

Conference papers:

  1. Yuta Orii, Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki, Tsuyoshi Hirajima, Shigeto Kuroiwa, Yuji Aoki, 2019. Study of selective flotation of copper sulfides and copper arsenic minerals. In: International Symposium on Earth Science and Technology, Fukuoka, Japan.
  2. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, Shigeto Kuroiwa, Yuji Aoki, 2019. Effect of hydrogen peroxide on the separation of copper sulfide minerals and arsenic-bearing copper minerals using flotation. In Flotation 2019, Cape Town, South Africa.
  3. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, Shigeto Kuroiwa, Yuji Aoki, 2019. Effect of seawater on bubble interactions with chalcopyrite and molybdenite surfaces. In Flotation 2019, Cape Town, South Africa.
  4. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, Masashi Yamane, Eri Takida, Shigeto Kuroiwa, Yuji Imaizumi, Mitsuru Sawada, 2019. Separation of molybdenite and chalcopyrite using various oxidation treatments. In Copper 2019, Vancouver, Canada.
  5. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, Makoto Umedara, Takeshi Nakamura, Shigeto Kuroiwa, 2019. Effect of hydrogen peroxide on floatability of chalcopyrite, bornite, tennantite, and enargite. In Copper 2019, Vancouver, Canada.
  6. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, 2018. The use of Fenton`s reagent on selective flotation of chalcopyrite and molybdenite. In: XXIX International Mineral Processing Congress (IMPC), Moskow, Rusia.
  7. Hajime Miki, Tsuyoshi Hirajima, Yuta Muta, Gde Pandhe Wisnu Suyantara, Keiko Sasaki, 2018. Investigation of reagents for selective flotation on chalcopyrite and molybdenite. In: XXIX International Mineral Processing Congress (IMPC), Moskow, Rusia.
  8. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, 2017. Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation. In: 14th International Symposium on East Asian Resources Recycling Technology (EARTH), Hokkaido, Japan.
  9. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Ahmed Mohamed Elmahdy, Hajime Miki, Keiko Sasaki, 2016. The effect of MgCl2 solution on the stability of the intervening liquid layer in bubble interactions with chalcopyrite and molybdenite surfaces. In: International Symposium on Earth Science and Technology, Fukuoka, Japan.
  10. Tsuyoshi Hirajima, Osamu Ichikawa, Hajime Miki, Keiko Sasaki, Gde Pandhe Wisnu Suyantara, Ahmed Mohamed Elmahdy, 2016. Floatability of chalcopyrite and molybdenite in MgCl2 solution. In: Copper 2016, Kobe, Japan.
  11. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Osamu Ichikawa, Hajime Miki, Keiko Sasaki, Ahmed Mohamed Elmahdy, 2016. Bubble collision and attachment on chalcopyrite and molybdenite surfaces. In: Copper 2016, Kobe, Japan.
  12. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Ahmed Mohamed Elmahdy, Hajime Miki, Keiko Sasaki, 2016. Effect of kerosene on bubble interaction with molybdenite and chalcopyrite in MgCl2 solution. In: XXVIII International Mineral Processing Congress (IMPC), Quebec, Canada.
  13. Tsuyoshi Hirajima, Hidekazu Matsuoka, Hajime Miki, Gde Pandhe Wisnu Suyantara, Ahmed Mohamed Elmahdy, Keiko Sasaki, 2016. Comparison of selective flotation of chalcopyrite and molybdenite with various oxidation techniques. XXVIII International Mineral Processing Congress (IMPC), Quebec, Canada.
  14. Tsuyoshi Hirajima, Osamu Ichikawa, Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki, Ahmed Mohamed Elmahdy, 2015. Seawater divalent cations (MgCl2 and CaCl2) effect on the flotation of molybdenite and chalcopyrite. In: Flotation Conference, Cape Town, South Africa.

Contact us

Kyushu University Institute for Asian and Oceanian Studies

Motooka 744, Nishi-ku, Fukuoka,819-0395, Japan
TEL: +81-92-802-2319

Copyright © Kyushu University Institute for Asian and Oceanian Studies.
Page
Top