Utilization of Olive Kernel Ash in Removal of RB19 from Synthetic Textile Wastewater
محل انتشار: فصلنامه روشهای تصفیه محیط، دوره: 1، شماره: 3
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 909
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شناسه ملی سند علمی:
JR_JETT-1-3_008
تاریخ نمایه سازی: 7 شهریور 1393
چکیده مقاله:
The colored wastewater of textile industries has toxic and stable material in the environment. Several methods for removal of synthetic dyes was investigated that adsorption is most effective between these methods. This study was performed experimentally and in laboratory scale. The adsorption capacity of dye is related to pH of solutions, initial dye concentration, adsorbent dose and contact time. The concentrations of dye were determined by UV-Vis spectrophotometer at 592nm. To analyze the equilibrium data was used from the Langmuir, Freundlich and Temkin isotherms models and pseudo-first-order, pseudosecond- order and Elovich kinetics models. The results indicated that the increase in adsorbent dose led to increasing of the removal efficiency. According to the results, adsorption efficiency was increased with decreasing of pH and increase in reaction time. Increasing of initial dye concentration from 10 to 50 mg/L in present of 0.5g/100mL of adsorbent, pH=4 and at contact time of 180 min led to decrease of removal efficiency from 96% to 93.7%. In addition, the Langmuir isotherm model had good fit with obtained results. The adsorption kinetics followed the pseudo-second-order model. The results show that the olive kernel ash is a natural and cheap adsorbent that can be used for the removal of reactive blue 19 dye from textile wastewater. In addition we can utilize of this sorbent for other organic pollutants.
کلیدواژه ها:
Desertification ، surface adsorption ، olive kernel ash ، reactive blue 19 dye ، isotherms ، kinetics ، textile wastewater
نویسندگان
Behzad Jamshidi
Master of Science Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
Mohammad Hassan Ehrampoush
Professor, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Mahboobeh Dehvari
Senior Research Associate in the Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Corresponding author