نوع مقاله : پژوهشی
نویسندگان
1 دانشجو، دانشکده بهداشت، دانشگاه علوم پزشکی شهید صدوقی یزد، یزد ، ایران، صندوق پستی: 035-31492059
2 دانشگاه علوم پزشکی شهید صدوقی یزد
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Textile industries generate a substantial amount of wastewater that contains significant quantities of dyes and hazardous metals, and its discharge into water sources is detrimental to humans, aquatic animals, and microorganisms. In this study, the adsorption process of reactive blue 21 dye with activated carbon has been investigated using the density functional theory (DFT) method. The properties of the adsorbent were characterized by SEM, FTIR, XRD and zeta potential analyses. Based on the Box-Benken model results, under optimal conditions, a removal efficiency of 74.48% was obtained at an adsorbent dose of 3 g/L, pH 3, contact time of 30 min, and dye concentration of 10 mg/L. The adsorption process followed the Langmuir isotherm and the pseudo-second-order kinetic model. The mechanism of the adsorption process of reactive blue 21 dye on activated carbon was proposed using density functional theory and analysis of the adsorbent characteristics, including electrostatic interactions, hydrogen bonding, and π-π stacking.
کلیدواژهها [English]
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