SciELO - Scientific Electronic Library Online

 
vol.37 issue2The impact of water quality on informally-declared heritage sites: a preliminary study author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • On index processSimilars in Google

Share


Water SA

On-line version ISSN 1816-7950
Print version ISSN 0378-4738

Abstract

MIRANDA-RIOS, M; LUNA-PABELLO, VM; ORTA DE VELASQUEZ, MT  and  BARRERA-GODINEZ, JA. Removal of Escherichia coli from biological effluents using natural and artificial mineral aggregates. Water SA [online]. 2011, vol.37, n.2, pp.213-220. ISSN 1816-7950.

Ability for disinfecting sterile biological effluents inoculated with Escherichia coli ATCC 25922 at concentrations of 105 CFU/mℓ, using a natural mineral aggregate (NMA) and artificial mineral aggregates (AMA's) consisting of individual oxides as FeO, CuO y Ag2O and combined oxides as Fe2O3-Cu2O, Fe2O3-Ag2O, Cu2O-Ag2O, Fe2O3-Cu2O-Ag2O, contained alginate beads, was compared. The results indicate that Ag2O and Fe2O3-Ag2O, Cu2O-Ag2O combinations, as well as NMA, inactivated 100% of E. coli in 30 min, whereas the oxides mixture, Fe2O3-Cu2O-Ag2O, took 13 min. It was observed that redox potential values were closely related to the disinfection level achieved. The advantage resulting from using alginate beads was that these allow the formation of AMA, which has higher disinfectant ability relative to NMA.

Keywords : disinfection; biological effluent; Fe2O3; Cu2O and Ag2O; alginate beads; Escherichia coli; natural mineral aggregate; artificial mineral aggregate.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License