نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه شیمی، دانشکده علوم پایه، دانشگاه ایلام، ایلام، ایران
2 دانشکده علوم پایه، دانشگاه ایلام، ایلام، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Biosorption of Indigo carmine and Methyl orange in single and binary systems by hazelnut husk was optimized by response surface methodology. The optimum conditions for binary system were determined as pH 3, biosorbent concentration 0.1 g/L and equilibrium time of 60 min. At this condition, total biosorption capacity was 0.12 mmol/g. Four isotherm models were compared in single and binary systems. The biosorption data were fitted very well to Freundlich isotherm and second-order kinetic model. Thermodynamic studies showed that the biosorption process was spontaneous. Hazelnut husk as a natural biosorbent can be used for scale-up purposes due to its low cost, availability and good total capacity for the removal of dyes. Comparison of results with other biosorbents shows that hazelnut husk had higher biosorption capacity with respect to chitosan, Brazil nut shell, rice husk, banana and orange peels.
کلیدواژهها [English]