Adsorption of Methylene Blue dye using Marine algae Ulva lactuca

Abstract

Contamination of dyes causes an aesthetic problem, severe public health concern and adds several serious environmental issues as a result of their resistance in nature and nonbiodegradable characteristic. Adsorption of methylene blue (MB) has been conducted by utilizing marine algae U. lactuca as biosorbent. In this study, the batch adsorption of Methylene blue dye using marine algae U. lactuca was examined. The ability of the U. lactuca in removing the dye color was dependent on contact time, algae biomass, dye concentration, and pH. The optimum adsorption was found at around pH 8; contact time 110 min; adsorbent dose 1,25 g/L; initial concentration 25 mg/L. The maximum percentage dye removal value was 91,92 %. This work confirms the potential use of U. lactuca for removing Methylene blue dyes solutions. Keywords: Methylene blue, Ulva lactuca, adsorption, biosorbent, removal of dyes.