Removal of methylene blue using dried leaves

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Date
2019-05
Authors
Ummi Salamah Binti Zahari
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Dyes are an important class of coloured synthetic organic compound that used and applied in various industries, especially in textile industry. The aim of this study was to remove cationic dye (methylene blue) from aqueous solution using a low-cost and eco-friendly adsorbent, dried leaves (DLs). Dried leaves (DLs) are agricultural waste largely available in Malaysia. The removal efficiency and operational parameters effects of DLs on methylene blue (MB) removal efficiency under batch adsorption method was investigated. The batch experiments were carried out to study the effects of the following variables included the adsorbent dosage (0.05-2.0 g), initial MB concentration (20-200mg/L), temperature (30-60°C) and initial pH solution (2-11). Adsorption experiments using DL resulted in higher methylene blue (MB) removal efficiency ranging from 85 to 98% for 0.05-2.0 g of adsorbent dosage. From the experiments result, it was found that MB adsorption increased with increasing the adsorbent dosage. MB removal decreased with increasing the initial MB concentration, temperature and initial solution pH. The MB removal using optimum dosage at 0.3 g of adsorbent was achieved at 98.25%.
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