Study on Fixed Salt Removal Effect by Fine Bubbles Yuji Mikasa, Naoya Yamawaki, Hiroaki Shida, Hayato Okumura, Shigenori Akamatsu, Yusuke Nishiuchi and Takashi Hata MATEC Web Conf., 333 (2021) 02009 Published online: 08 January 2021 DOI: 10.1051/matecconf/202133302009