Continuous water treatment by adsorption and electrochemical regeneration

Publication year: 2011Source: Water Research, In Press, Accepted Manuscript, Available online 31 March 2011F.M., Mohammed , E.P.L., Roberts , A., Hill , A.K., Campen , N.W., BrownThis study describes a process for water treatment by continuous adsorption and electrochemical regeneration using an air-lift reactor. The process is based on the adsorption of dissolved organic pollutants onto an adsorbent material (a graphite intercalation compound, Nyex®1000) and subsequent electrochemical regeneration of the adsorbent leading to oxidation of the adsorbed pollutant. Batch experiments were carried out to determine the adsorption kinetics and equilibrium isotherm for adsorption of a sample contaminant, the organic dye Acid Violet 17. The adsorbent circulation rate, the residence time distribution (RTD) of the reactor, and treatment by continuous adsorption and electrochemical regeneration were studied to...