دراسة التوازن والحركية والديناميكا الحرارية لامتزاز النحاس الثنائي من محلول مائي باستخدام الكربون المنشط المشتق من الأكاسيا
DOI:
https://doi.org/10.59743/jmset.v6i2.37الكلمات المفتاحية:
النحاس، أكاسيا، الاتزان، الحركية، الديناميكا الحرارية، الامتزازالملخص
تمت دراسة آلية سلوك الامتزاز للكربون المنشط حرارياً المحضر من الأكاسيا (AAC) لأيونات النحاس من المحاليل المائية في الظروف المثلى للإزالة باستخدام النظام الدفعي. تم تحليل البيانات التجريبية بواسطة نماذج الامتزاز (لانجموير وفريوندليش وتيمكين ودوبينين- زافيرينا-رادوشكيفيتش). تم تحديد المعلمات المميزة ومعاملات التحديد ذات الصلة عند درجات الحرارة بنطاق الدراسة. تم أيضًا تقييم معلمات الديناميكا الحرارية. كما تم تحليل حركيات الامتزاز باستخدام النماذج الحركية من الدرجة الأولى البسيطة، ومن الدرجة الظاهرية الأولى، ومن الدرجة الظاهرية الثانية، ونموذج الحركية لانتشار الجسيمات. تم حساب ومناقشة المعلمات الحركية، وثوابت المعدل، وقدرات امتزاز التوازن، ومعامل التحديد ذي الصلة لكل نموذج حركي. وقد بينت نتائج الدراسة أن عملية الامتزاز تتوافق مع نموذج فريوندليش، ووجد أن عملية الامتصاص كانت مجدية وتلقائية وممتصة للحرارة، كما تبين أن امتزاز النحاس يمكن وصفه بمعادلة الدرجة الثانية الظاهرية. كما نتبين أن آلية عملية امتزاز النحاس على الكربون المنشط المحضر من الأكاسيا هي عملية امتزاز كيميائي وفق ما بينته معلمات المبينة بالدراسة. أظهرت نتائج الدراسة أن الكربون المنشط حرارياً والمحضر من الأكاسيا يمكن استخدامه بفاعلية باعتباره مادة مازة طبيعية ومنخفضة التكلفة للإزالة الفعالة لأيونات Cu (II) من المحاليل المائية كبديل للممتزات التجارية الحالية.
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