Naokatsu Kannari, Takumi Uesugi, Keiichi Kubota, Daichi Masuda, Kazuyoshi Sato, Takayuki Takarada, Tomohide Watanabe. Calcium-enriched biochar: pyrolysis of digested sludge, phosphorus recovery and fertilizer properties. Journal of the Japan Institute of Energy. 2020. 99. 12. 236-242
Irika Devi Anggraini, Keryanti, Made Tri Ari, Penia Kresnowati, Ronny Purwadi, Reiji Noda, Tomohide Watanabe, Tjandra Setiadi. Bioethanol production via syngas fermantation of Clostridium Ljungdahlii in a hollow fiber membrane supported bioreactor. International Journal of Technology. 2019. Vol. 10. No. 3
Keiichi Kubota, Tomohide Watanabe, Hideaki Maki, Gen Kanaya, Hironori Higashi, Kazuaki Syutsubo. Operation of sediment microbial fuel cells in Tokyo Bay, an extremely eutrophicated coastal sea. Bioresource Technology Reports. 2019. Vol.6