عناصر مشابهة
Removal of Methylene Blue from Aqueous Solution Using Raw and Modified Pine Tree Leaves as Adsorbent
| المصدر: | المجلة الجامعة |
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| الناشر: |
جامعة الزاوية - مركز البحوث والدراسات العليا
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| المؤلف الرئيسي: | |
| مؤلفين آخرين: | , , |
| المجلد/العدد: | مج19, ع3 |
| محكمة: | نعم |
| الدولة: | ليبيا |
| التاريخ الميلادي: | 2017 |
| الصفحات: | 17 - 36 |
| رقم MD: | 1264009 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | English |
| قواعد المعلومات: | EduSearch EcoLink IslamicInfo AraBase HumanIndex |
| مواضيع: | |
| رابط المحتوى: |
| المستخلص: | Pine tree leaves, an agricultural waste, was chemically modified and used for the removal of Methylene blue from aqueous solution. The chemical modification was prepared using 0.1 M Hcl and 0.1 M NaOH. Overall, the extent of methylene blue dye adsorption is increased with the increase in initial dye concentration, contact time, solution pH, and system temperature but is decreased with the increase of salt concentration. Equilibrium data were described by both Langmuir isotherm and Freundlich adsorption isotherm. The isotherm study indicated that MB adsorption on raw and treated pine leaves could be fitted well with the Langmuir model other than Freundlich model. The maximum adsorption capacity for MB at 30 ˚C determined from the Langmuir isotherm is 126.58 mg/g occurred at pH of 9.2 for an initial dye concentration of 10 ppm by raw pine leaves, whereas for acid-treated and bae-treated pine leaves the maximum adsorption of 140.44 and 132.56 mg/g respectively for the same experimental conditions. Freundlich constant ‘n’ also indicated favourable adsorption. |
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