Reactive Blue ۱۹ Dye Adsorption Behavior on Jujube Stems Powder from Syntetic Textile Wastewater: Isotherm and Kinetic Adsorption Studies
- سال انتشار: 1393
- محل انتشار: فصلنامه تخصصی تحقیقات سلامت، دوره: 3، شماره: 1
- کد COI اختصاصی: JR_JCHR-3-1_008
- زبان مقاله: انگلیسی
- تعداد مشاهده: 123
نویسندگان
چکیده
Introduction: Dyes have complicated structures, they are usually toxic and resistant to biological treatment and enter the environment through industrial waste streams. The aim of this study was to review the isotherm and kinetic adsorption studies of Reactive Blue ۱۹ (RB۱۹) dye onto Jujube stems powder from synthetic textile wastewater. Materials and Methods: This study was conducted in laboratory scale. Synthetic wastewater was prepared with dissolving RB۱۹ in distilled water. The dye concentration was determined by using the UV/Vis spectrophotometer at ۵۹۲ nm. In this study, we investigated the effects of initial dye concentration, pH, adsorbent dose and contact time. For better understanding of the adsorption process, the experimental data were analysed with Langmuir and Freundlich isotherm models and kinetic studies. Results: The results showed that removing RB۱۹ dye with Jujube stems powder as a natural biosorbent had the best efficiency in alkaline condition (pH=۱۰) and by increasing the pH from ۳ to ۱۰, the dye removal efficiency increased. By decreasing of initial dye concentration and increasing the time and adsorbent dose, dye removal efficiency increased. In this study, the best fit of the adsorption isotherm data was obtained using the Langmuir model. Kinetic analysis of our results showed that the results well fitted by pseudo-second-order reaction. Conclusion: We can conclude that Jujube stems powder could be used as a biosorbent for dye removal from aqueous solutions.کلیدواژه ها
Adsorption, Jujube Stems Powder, Reactive Blue ۱۹, Kinetics, جذب سطحی, پودر ساقه عناب, رنگ راکتیو آبی ۱۹, سینتیکاطلاعات بیشتر در مورد COI
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