Removal of Cationic Dye of Methylene Blue from Aqueous Solutions Using Tea Seed Meal
سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,202
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شناسه ملی سند علمی:
NCER02_060
تاریخ نمایه سازی: 27 شهریور 1393
چکیده مقاله:
Most of dyestuffs discharged into environment from textile industries are toxic and can cause serious dangers harms to aquatic and human lives. Unfortunately some of them are difficult to biodegrade by microorganisms. Therefore; they require proper treatment before discharge into the rivers or environment. Among the various water treatment methods used for dye removal, adsorption and biosorption are more popular and economic. In this research, tea seed meal (TSM) was used for removal of methylene blue (MB) as a typical cationic dye from aqueous solutions. Adsorption experiments were conducted in a batch system. The effects of several factors, including pH, contact time, initial dye concentration, adsorbent dosage, temperature and ionic strength on sorption were evaluated. The adsorption isotherms are described by means of the Langmuir and Freundlich isotherms. Based on the linear regression analysis (R2) it was found that equilibrium data fitted well with Langmuir isotherm. Optimum pH value for dye adsorption was determined as 7.0. Maximum adsorption capacity (Qmax) was calculated 128.205 mg/g. The adsorption process attains equilibrium within 20 min. The results indicate that very low cost abundant material of the tea seed meal can be used as an effective adsorbent for removal of methylene blue from aqueous solution such as textile wastewaters
کلیدواژه ها:
نویسندگان
Mina Hasanabadi
MSc Student, Department of Chemistry, Faculty of Science, University of Guilan
Ali Mohammad-Khah
Assistant Professor, Department of Chemistry, Faculty of Science, University of Guilan
Reza Azadi Gonbad
Assistant Professor, Department of Seed and Plant Improvement, Tea Research Institute
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