Akademik Veri Yönetim Sistemi
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.39, sa.4, ss.2463-2472, 2024 (SCI-Expanded)
Synthetic dyes are widely used as colorants in many industrial areas such as paper, plastic, leather, wool and textile. When wastewater containing these dyes is released into the receiving water environment without treatment, it reduces the light transmittance of the aquatic environment, preventing photosynthetic activities in aquatic life, and harming the environment, animal and human life cycles. Therefore, dyes must be purified from water. Adsorption is one of the methods in which cost-effective, easy-to-apply and effective removal efficiencies are obtained. In this study, CTS/nanoclay beads containing chitosan (CTS) and nanoclay were prepared for use in dye adsorption. Acid Violet 90 (AV90), a metal-complex dye, was used in the experiments. CTS and CTS/nanoclay beads were prepared by the drop method. The morphological structures of the beads were investigated by scanning electron microscopy (SEM) and functional groups were investigated by Fourier transmission infrared spectroscopy (FT-IR). The effect of initial pH and dye concentration on AV90 adsorption with spheres was investigated. Experiments were carried out in batch system. The highest dye removal was obtained at pH 2. Adsorption isotherm models (Langmuir, Freundlich and Temkin) were applied to the experimental data obtained and it was seen that Langmuir was the most suitable model for AV90 adsorption. The adsorption capacities (qm, mg/g) obtained from the Langmuir isotherm model are 26.81 mg/g for CTS and 91.74 mg/g for CTS/nanoclay. In this study, it was seen that the beads containing nanoclay can be used successfully in dye adsorption.