کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
580105 | 1453148 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics of Hg(II) adsorption and desorption in calcined mussel shells
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The potential use of calcined mussel shells to purify water contaminated with mercury was evaluated. The Hg(II) adsorption and desorption kinetics were studied in batch-type and stirred-flow chamber experiments. The adsorption/desorption experiments revealed some differences between the batches of shells used. The batch of shells that displayed the greatest capacity to adsorb Hg(II), via a highly irreversible reaction, also contained more Fe and Al than the other batches. The results of the stirred-flow chamber experiments indicated a high degree of irreversibility in the process of Hg(II) adsorption in the mussel shell, and that Hg(II) was rapidly retained. The results of these experiments also revealed that the efficiency of depuration differed depending on the length of time that the system was used: when the system was operated for 55Â min, depurating 162Â mL of inflowing water gâ1 mussel shell, a 90% reduction in the initial concentration of Hg(II) was obtained; use of the system for 90Â min, depurating 265Â mL water gâ1 mussel shell, produced a 75% reduction in the initial Hg(II), and use of the system for 162.5Â min, depurating 487Â mL of water gâ1 mussel shell, resulted in a 50% reduction in the initial Hg(II).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 180, Issues 1â3, 15 August 2010, Pages 622-627
Journal: Journal of Hazardous Materials - Volume 180, Issues 1â3, 15 August 2010, Pages 622-627
نویسندگان
Susana Peña-RodrÃguez, David Fernández-Calviño, Juan Carlos Nóvoa-Muñoz, Manuel Arias-Estévez, Avelino Núñez-Delgado, MarÃa José Fernández-Sanjurjo, Esperanza Álvarez-RodrÃguez,