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Adsorption of basic dye methylene blue by brown algae Sargassum duplicatum

IOP Conference Series: Earth and Environmental Science, ISSN: 1755-1315, Vol: 462, Issue: 1
2020
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Conference Paper Description

The ability of raw and dried Sargassum duplicatum to remove methylene blue (MB) from aqueous solution was evaluated. Brown algae. S. duplicatum before and after MB adsorption was characterised by Fourier transform infrared spectroscopy (FT-IR). Batch experiments were conducted to examine the effects of parameters such as initial pH, biomass dosage, contact time, and initial dye concentration on MB Adsorption. The optimum adsorption was found at around pH 5, adsorbent dosage 1 g/L, and initial concentration of MB at 20 mg/L. Adsorption occurs very fast in first 5 min and reaches the equilibrium at 70 min. The maximum percentage of dye removal was 88,9%. This study suggests that S. duplicatum has good potential capacity to remove MB dye and could offer promising opportunity as a low-cost biosorbent.

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