Study of Nitrate Adsorption Process on Red Mud; an Emerging Adsorbent Obtained from Industrial Waste
محل انتشار: هشتمین کنگره ملی مهندسی عمران
سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,452
فایل این مقاله در 5 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
NCCE08_0921
تاریخ نمایه سازی: 5 مهر 1393
چکیده مقاله:
Red Mud (RM) is a solid industrial waste remains from Bayer's process to produce of alumina from Bauxite ore. Annually, about 60 million tons of RM is produced all over the world that may cause serious danger for environment (due to its high alkalinity). RM has found many applications in science andindustry e.g. production of color bricks, ceramics, cement, and adsorbents. Application of RM for environmental friendly purposes e. g. removal of heavy metal ions, inorganic anions, organics, dyes and pathogens from aqueous solution, have been widely developed recently. In this paper, process of nitrateadsorption on surface of RM adsorbent is discussed. Laboratory batch experiments conducted to study removal behavior of adsorbent under different pH solution conditions. The results show that increasing or decreasing in pH of solution, may result in reduced nitrate removal capacity. Optimum pH of adsorptionwas in range of natural water (pH=6.5). FT-IR test also implemented to investigate characteristics of RM adsorbent (before and after adsorption process). It shows that adsorption process obeys both physical and chemical procedure. Finally, Ligand-Exchange process on hydroxylated surface is supposed as the main process of nitrate ion adsorption on RM
کلیدواژه ها:
نویسندگان
Hamidreza Gharibi
Water and Environmental Engineering Faculty, Shahid Beheshti University
Abolghasem Alighardashi
Water and Environmental Engineering Faculty, Shahid Beheshti University
Shahram Raygan
School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran
Abbas Akbarzadeh
Water Research Institute, Ministry of Energy
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :