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Discharge of textile wastewater containing toxic dyes can adversely affect aquatic organisms and human health. The objective of the study was to investigate the potential of immobilized marine microalgae ( Chlorella marina, Isochrysis galbana, Tetraselmis sp . Dunaliella salina and Nannochloropsis sp.) and freshwater microalga ( Chlorella sp.) in removing dye from textile wastewater (TW). The present study incorporated the use of 2% sodium alginate matrixes for decoloration. Among the algal species tested, the highest colour removal was noticed in Isochrysis galbana (55%) followed by freshwater Chlorella sp. (43%). The present method is easy to use, cost effective and devoid of technical problems. Keywords: Marine microalga, immobilization, textile wastewater, Chlorella marina, Isochrysis galbana, Dunaliella salina, biosorption, bioremediation. African Journal of Biotechnology , Vol 13(22) 2288-2294

Preliminary study on the dye removal efficacy of immobilized marine and freshwater microalgal beads from textile wastewater