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Khani MH Pahlavanzadeh H Alizadeh K 《Environmental science and pollution research international》2012,19(6):2408-2418
INTRODUCTION: The biosorption characteristics of strontium ions using fungus Aspergillus terreus were investigated. Experimental parameters affecting the biosorption process such as pH, contact time, initial metal concentration, and temperature were studied. MATHEMATICAL DESCRIPTION: Fungus A. terreus exhibited the highest strontium uptake capacity at 15°C at an initial strontium ion concentration of 876 mg L(-1) and an initial pH of 9. Biosorption capacity increased from 219 to 308 mg g(-1) with a decrease in temperature from 45°C to 15°C at this initial strontium concentration. The equilibrium data fitted very well to the Langmuir adsorption model in the concentration range of strontium ions and at all the temperatures studied. CONCLUSION: Evaluation of the experimental data in terms of biosorption dynamics showed that the biosorption of strontium onto fungus followed the pseudo-second-order dynamics well (R(2)?>?0.985). The calculated thermodynamics parameters (-1.64??G°?-1.93 kJ mol(-1) at temperatures of 45-15°C, ?H°?=?-4.83 kJ mol(-1) and ?S°?=?-0.01 kJ mol(-1) K(-1)) showed that the biosorption of strontium ions were feasible, spontaneous, and exothermic at the temperature ranges of 15-45°C. 相似文献
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Khani Masoud Mousavi Seyyed Ebrahim Pahlavanzadeh Hassan Ale Ebrahim Habib Mozaffari Abbas 《Environmental science and pollution research international》2019,26(10):9686-9696
Environmental Science and Pollution Research - In the present study, a detailed investigation was carried out on MoO3 alumina-supported catalysts behavior in selective catalytic reduction of SO2 to... 相似文献
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