부산대학교 도서관

Synthetic dyes, which are commonly used in textile, paper, leather and plastic industries, pose a significant risk to the environment. This means that the wastewater from industrial sources mixes with groundwater, surfacewater or rivers, affecting aquatic life, water quality and food chain in negatively. Vine stem is an agricultural side product and has no economic value. Every year hundreds thousands of tons vine stem come out as a waste by trimming or pruning and destroyed by burning. In the present study, grinded vine stem was investigated as a biosorbent for the removal of dyes from the aqueous solution. To identify the functional groups of the biosorbent, attenuated total reflectance spectra (ATR-IR) were used. The zeta potential of vine stem was measured as a function of pH for investigating the surface charge. It was found negativity for all the pH. The batch biosorption method (BBM) was used for the study. The analysis of the pH functioning, biosorbent amount, and contact time of the biosorption process have been made. The Langmuir model was found to fit well with the experimental data for the biosorbent. The maximum adsorption capacities were found as 53.5 and 45.5 for Direct Red 80 and Levafix Brillant Blue, respectively. The optimization study revealed that the grinded vine stem can be an effective and economically feasible biosorbent for the removal of dye.