Comparison of Bacterial Regrowth on Plant- and Coal-based Granular Activated Carbon
Lee, D.G.;Ha, B.J.;Ha, J.M.;Lee, S.H.;Lee, J.H.(Silla University, Busan, Republic of Korea)E-mail:[email protected] | Park, S.J.(Daejeon University, Daejeon, Republic of Korea)
Activated carbon has been used in water treatment, because they strongly adsorb organic material including contaminant. Water purifier usually use activated carbon, and bacterial regrowth on that could induce many problems. Model columns, packed with coal- and plant-based granular activated carbon (GAC), were operated with rechlorinated tap water to compare the degree of bacterial regrowth on different GACs. GAC columns decreased the concentration of total organic carbon and chlorine, while they are not good for the decrease of ions. Breakthrough of bacteria were occurred after eight days of operation, and reached 1.1×10³ CFU/mL on coal based GAC and 6.2×10² CFU/mL on coconut based one.
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