Assessment of the banana pseudostem as a low-cost biosorbent for the removal of reactive blue 5G dye

作者：Modenes Aparecido N; Espinoza Quinones Fernando R^*; Geraldi Claudineia A Q; Manenti Diego R; Trigueros Daniela E G; de Oliveira Ana Paula; Borba Carlos E; Kroumov Alexander D

来源：Environmental Technology, 2015, 36(22): 2892-2902.

DOI：10.1080/09593330.2015.1051591

• agricultural waste
• reactive blue 5G dye
• biosorption
• waste treatment
• isotherm models

In this work, the removal of reactive blue 5G (RB5G) dye using the drying biomass of banana pseudostem (BPS) was investigated. The characterization of BPS particles was performed. Improvement in the RB5G dye removal performance at the following sorption conditions was evidenced: pH 1, 30 degrees C sorption temperature and 40 rpm shaking, regardless of the particle size range. Kinetic RB5G dye sorption data obtained at better conditions fit well in an Elovich model. A combined Langmuir-BET isotherm model provides a good representation of the RB5G dye equilibrium sorption data, which shows the evidence of a physical sorption process on the BPS surface. Based on the results, the removal of RB5G dye molecules by BPS is based on a physical sorption process.

• 出版日期2015-11-17