Effective elimination of water-borne <em>Escherichia coli </em>using archaeal poly-<span style="font-family: Symbol">g</span>-glutamate-based materials
2016
Kanae Yamaguchi | Makoto Ashiuchi | Sawami Nakayama | Yuichi Hakumai
<em>Escherichia coli</em> is used worldwide as a fecal indicator species to assess the quality of (drinking) water. Active carbons are used for the removal of chemical pollutants, but are ineffective in the inactivation of water-borne pathogens such as <em>E. coli</em>. Herein, we developed poly-<span style="font-family: Symbol">g</span>-glutamate-ion complex-coated active carbons (PGAIC-AC) and examined their ability to eliminate <em>E. coli </em>from a laboratory model of water pollution (~ 2.0 × 10<sup>4</sup> CFU/mL) at room temperature. The results showed that <em>E. coli</em> was virtually eliminated when using PGAIC-AC as a dispersant. In fact, the log reduction values were estimated to be > 1.19. In this study, we further constructed simple but effective bacteria-elimination system with a PGAIC-AC–embedded column. This PGAIC-AC system can be utilized to purify water when no electricity or specialized equipment is available.
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