An Efficient Dual-functionalized Magnetic Composite Synthesized by Pineapple Skin and EDTA for Copper Ions Removal
سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 292
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شناسه ملی سند علمی:
GECCONF03_020
تاریخ نمایه سازی: 7 بهمن 1399
چکیده مقاله:
An inexpensive, environmental-friendly magnetic adsorbent consisting of modified cellulose and ethylenediaminetetraacetic acid (EDTA) was synthesized and used for removing copper cations from an aqueous solution. The Central Composite Design was used for planning the adsorption experiments. The maximum removal was equal to 92.29% for an initial copper concentration of 40.0 mg·L-1. The initial pH and temperature were fixed at 6.5 and 25.0 °C and the adsorbent dosage was 1.97 g·L-1 in the kinetics study. The adsorption process was almost completed within 10 min. The pseudo-n-order (PnO) model was the best model to fit the experimental data. Ions of Cu(II) formed a complex with EDTA. Also, electrostatic interactions between carboxyl groups of modified cellulose/EDTA and Cu(II) were the key factors for adsorption.
کلیدواژه ها:
نویسندگان
Hanan Sayahi
Department of Applied Chemistry, Faculty of Chemistry, Bu–Ali Sina University, Hamedan
Simin Asadabadi
partment of Applied Chemistry, Faculty of Chemistry, Bu–Ali Sina University, Hamedan