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Pulp and paper mill industry is one of the biggest water users that produce wastewater containing dye and various toxic compounds. The study was conducted to screen for potential tropical native aquatic plants, which can be used in phytoremediation mainly for the removal of colour and chemical oxygen demand (COD) from pulp and paper mill effluent. Three selected tropical native aquatic plants, Scirpus grossus, Azola pinnata and Salvinia molesta were planted in a greenhouse at UKM for screening test. Real final effluent from a pulp and paper mill in Pahang was characterized and contained 181 PtCo for colour and 72.4 mg/L COD at pH 8.1. This wastewater was exposed to weed plant, Scirpus grossus and floating plants, Azola pinnata and Salvinia molesta. The final effluent was analysed after 28 day of exposure. The percentage of colour removal for the three tropical native plants Scirpus grossus, Azola pinnata and Salvinia molesta were 50.28%, 43.09% and 49.72% respectively. While for COD removal, all the three plants successfully removed 100% COD. From the result, the best tropical native aquatic plant to remove colour and COD for pulp and paper mill effluent is Scirpus grossus.

SCREENING OF TROPICAL NATIVE AQUATIC PLANTS FOR POLISHING PULP AND PAPER MILL FINAL EFFLUENT