کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
581344 | 877842 | 2009 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single and binary chromium(VI) and Remazol Black B biosorption properties of Phormidium sp.
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Single and binary chromium(VI) and Remazol Black B biosorption properties of Phormidium sp. Single and binary chromium(VI) and Remazol Black B biosorption properties of Phormidium sp.](/preview/png/581344.png)
چکیده انگلیسی
Wastewaters of textile and leather dying industries may contain significant quantities of chromium(VI) ions besides anionic and water-soluble dyes. Moreover the temperature of these wastewaters may be a controlling parameter affecting the biosorption efficiency. In this study biosorption of chromium(VI) and Remazol Black B reactive dye by dried Phormidium sp., a thermophilic cyanobacterium, was studied as a function of initial chromium(VI) concentration and temperature in no dye and 100 mg lâ1 dye-containing media at an initial pH value of 2.0 at which the biomass exhibited the maximum chromium(VI) and dye uptakes. The decrease of both metal and dye uptakes with temperature indicated that the uptakes were exothermic in nature. Equilibrium uptake of chromium(VI) enhanced considerably with both chromium(VI) and 100 mg lâ1 dye concentrations. Moreover the presence of chromium(VI) also increased the uptake of dye. At 25 °C, 22.8 mg gâ1 chromium(VI) and 91.3 mg gâ1 dye were sorbed by the biomass in binary 100 mg lâ1 chromium(VI) and 100 mg lâ1 dye-containing medium. The Langmuir was the best suitable adsorption model for describing the biosorption of chromium(VI) individually and in dye-containing medium. The pseudo-second-order kinetic model described both the chromium(VI) and dye biosorptions kinetics accurately.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 168, Issue 1, 30 August 2009, Pages 310-318
Journal: Journal of Hazardous Materials - Volume 168, Issue 1, 30 August 2009, Pages 310-318
نویسندگان
Zümriye Aksu, Sevgi ErtuÄrul, Gönül Dönmez,