Akademik Veri Yönetim Sistemi
Bulgarian Chemical Communications, cilt.56, sa.3, ss.208-214, 2024 (Scopus)
Phenol, a highly toxic organic compound, is commonly found in industrial effluents of pharmaceuticals, paper, plastics, and petrochemicals production processes. Effective treatment techniques should be enhanced to reduce the negative effects of phenol contamination in water sources, which poses serious environmental risks. An efficient option for treating water sources polluted with phenol is the continuous adsorption technique. Due to high mechanical strength, large surface area, ease of regeneration, and cost-effectiveness, polymeric structures are promising adsorbents. In this study, continuous-flow phenol adsorption onto acrylonitrile-divinylbenzene (AN-DVB) copolymer was investigated. Phenol adsorption was modeled in order to characterize the adsorption process, and the predictive accuracy of the models under continuous flow conditions was evaluated. A phenol aqueous solution was passed through a fixed column packed with AN-DVB copolymer beads at room temperature. Longer breakthrough and exhaustion periods were obtained by increasing the amount of adsorbent in the column; however, shorter breakthrough and exhaustion times and lower adsorption capacity were obtained by increasing the flow rate without altering the amount of adsorbent. The experimental breakthrough curves were modeled with Adams & Bohart, Thomas, Yoon & Nelson, Clark and modified dose-response column models via non-linear regression analysis. For every condition under investigation, the modified dose-response model provided a good fit with the experimental data. Isopropanol was found to successfully regenerate polymer beads through adsorption-desorption cycles.