摘要：Drinking water treatment plants which use alum as flocculants in their process have generated a large volume of alum sludge at the end of the treatment process. A study was conducted to analyze the concentration of alum and screen potential plant species in one alum sludge in Putrajaya, Malaysia. Cyperus haspan had shown the highest values of Bioaccumulation Absorption Coefficient (BAC) which was 0.37±0.12, but the translocation factor was only 0.13±0.03. M. micrantha H.B.K. showed the highest value of TF with 0.44±0.38. The age of sludge showed no significant difference (p>0.05) on the BAC value, except for Erechtites valerianifolia and there was no significant difference of TF value (p>0.05) for all plants. Hence, Cyperus haspan was a potential species to be used in the phytoremediation of alum sludge in future.
