Biology and Medicine

Flores D

Publications

• Special Issue Article
  Novel Technique for Degradation of Silver Thiosulfate Present in Wastewater of the Post- Harvest Treatment of Ethylene-Sensitive Flowers
  Author(s): Tacuri M, Flores D, Anrango MJ, Koch A, Naranjo B and Luis CumbalTacuri M, Flores D, Anrango MJ, Koch A, Naranjo B and Luis Cumbal
  
  Silver thiosulfate (STS) used in the post-harvest treatment of ethylene sensitive flowers is a potent producer of environmental damage because the silver cation (Ag+) remains in the soil and groundwater for long periods and can migrate to drinking water systems and cause health problems in humans. This study presents a novel treatment of wastewater contaminated with STS that includes three steps: i) oxidation of STS by bacteria isolated from sulfur springs of the Ecuadorian highlands which were added to artificial wastewater or wastewater containing STS from floriculture. The results indicate that approximately 60% of thiosulfate is oxidized to sulfate and 10% is absorbed by the bacteria at acidic pH, ii) biosorption of silver cation with fungi pellets of Cladosporium cladosporioides fungi. The adsorption tests show that the maximum adsorption capacity was.. View More»
  DOI: 10.4172/0974-8369.1000278

  Abstract PDF