Field observation at geothermal manifestations in Kokonoe Area, Oita, Japan (May, 2021)
Our team is currently doing research in the newly formed fumarole and steaming ground complexes in Kokonoe, Oita, Japan. Mr. Solomon, a Master’s student from Ethiopia, will carry out the study under the supervision of Dr. YONEZU Kotaro and Prof. (Emeritus) TAGUCHI Sachihiro. Samples of altered rocks, clay, manifestation water, and meteoric water were collected and analyzed in the laboratory of Kyushu University.
On-site experiment at Hachobaru Geothermal Power Station, Oita, Japan (April 2021)
In this on-site experiment, we aim to establish e new and simple method in predicting the formation of silica scale in a geothermal power plant. For that, we immersed several types of plate samples as a model of pipe surface on which silica scale will attach and grow. We then observe the early stage of silica scale formation using various advanced analytical methods.
Webinar (Sponsored by Webinar 100 program, KU)
University of Glasgow & Kyushu University
Economic Geology & Isotope Geochemistry
March 31, 2021
On-site experiment at Yamakawa Geothermal Power Station, Kagoshima, Japan (February 2021)
The utilization of acid geothermal water has its own challenge, such as the corrosion potential, and deposition of iron-silicate scale from iron-rich acid geothermal water. This onsite experiment was carried out to study the removal method of iron from acidic geothermal water and its effect to the polymerization behavior of silicic acid in geothermal water.
Web Seminar(ASIA WEEK 2020 KU)
Geothermal resource symposium in Taiwan, SE Asia and Kyushu
:Research collaboration between NTU, UGM, UP and KU
On-site experiment at Hachobaru Geothermal Power Plant, Oita, Japan (December 2020)
The mixing of high silica content of neutral geothermal water and high iron content of acid geothermal water can potentially cause a severe silica scale problem inside the pipeline. Therefore, we conducted on-site mixing experiments to study the polymerization of silicic acid and its adsorption on the surface of silica gel. This study is important to simulate the formation of silica scale inside the pipeline for geothermal power generation. In addition, we also examine several regents that are potentially able to prevent the formation of silica scale in a high iron, high silica content geothermal water.
This is an international symposium, presenting the most current sciences and technologies from around the world, with a special focus on scientific, technical, and environmental issues that challenge the earth resources developments.