Abstract:

The biosorption method for controlling water pollution can be considered as an alterna-tive method for the pollution of synthetic paints. In this study, the removal of Bril-lant Blue R (BBR) dyestuff, which is a textile dyestuff, by biosorption is investigated. For this purpose, eggshell immobilized with chitosan (ESIC) is designed as a biosorbent. The biosorption mechanism was studied in batch and continuous mode. As far as the batch system is concerned, the following results have been obtained: The optimum pH 2, dye concentration 25 ppm, interaction time 60 minutes, biosorbent amount 2.0 g/L, removal real wastewater 53.28%. Regarding continuous systems, the following f low speed of 0.5 mL/min, biosorbent amount 2.0 g/L, removal real wastewater 91.01%. Also, recycle ex-periments showed that there was 24.11% loss in the biosorption capacity of ESIC for BBR dye after 7 times reuse. Obtained results were consistent with Langmuir and Freundlich isotherm models. All the results demonstrate that ESIC is a natural, recyclable and cost-effective biosorbent for BBR dye removal in wastewater. Keywords: Biosorption; BBR; Eggshell; Chitosan; Dye. DOI: 10.17350/HJSE19030000159 Full Text:

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