Journal of Environmental Analytical Chemistry

Gamal O El-Sayed

Publications

• Research Article
  Adsorption of Tartrazine on Medical Activated Charcoal Tablets under Controlled Conditions
  Author(s): Mohammed A Kassem and Gamal O El-SayedMohammed A Kassem and Gamal O El-Sayed
  
  Two types of commercial medical tablets of activated charcoal formulations (AC1 and AC2) were used as adsorbents for tartrazine. The adsorption studies were performed at controlled conditions of pH, and temperature (gastrointestinal-like conditions). It was found that pH plays a major role in the adsorption process. At pH 1.5 and 37°C the effect of different parameters affecting dye removal (salinity, adsorbent dose, initial dye concentration and stirring rate) were examined. The effects of some dietary additives like mono- and disaccharides, artificial sweeteners and glycine on the adsorption efficiency were assayed. The maximum adsorption of tartrazine on activated carbon tablets was observed at highly acidic media. The removal efficiency appears to decrease with increasing temperature and salinity indicating an exothermic process. Equilibrium adsorption isotherms for the remova.. Read More»
  DOI: 10.4172/2380-2391.1000102

  Abstract PDF