Insights into chemical regeneration of activated carbon for water treatment

Granular activated carbon (GAC) adsorption has found wide application as a treatment process for the removal of natural organic matter, small compounds (e.g. pesticides), inorganic heavy metals), taste and odour in water over many years. During GAC operation, contaminants are adsorbed becomes progressively saturated time, requiring periodic regeneration media to restore its capacity. Chemical been identified an effective alternative off-site thermal regeneration, which is most commonly practiced technique exhausted by contaminants. Off-site poses significant disadvantages it time-consuming represents operational cost reduced productivity) environmental (energy/CO2) burden utilities. can be performed on-site, either situ or off-line, exposing spent (exhausted) selected chemical, combination chemicals, remove Prior research on chemical limited extent, but considered both solutions. Despite number studies, suitable regenerant solution desorbing range aqueous drinking not to-date. In this paper, we provide critical review performance solutions loaded with different