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Removal of Heavy Metal Ions From Polluted Water by Copper Oxide Nano-Sorbent | ||
| Iranian Journal of Analytical Chemistry | ||
| دوره 11، شماره 2 - شماره پیاپی 22، آذر 2024، صفحه 143-155 اصل مقاله (1.23 M) | ||
| نوع مقاله: Full research article | ||
| شناسه دیجیتال (DOI): 10.30473/ijac.2025.72395.1308 | ||
| نویسندگان | ||
| Hassan Karami* 1؛ Anahita Ghasemi2 | ||
| 1Nano Research Laboratory, Department of Chemistry, Payame Noor University, Abhar, Iran | ||
| 2Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran | ||
| چکیده | ||
| In this work, copper oxide nano sorbent (CONS) with an average diameter of 30 nm is synthesized by polyvinyl alcohol-based sol-gel method to remove heavy metal ions from an aqueous solution. The produced nanopowder is fully characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and dynamic light scattering (DLS). Various physicochemical parameters such as solution pH, nano-sorbent dosage, solution temperature, contact (mixing) time, initial concentration of lead ion, and the initial volume of lead ion sample are investigated and optimized by the "one at a time" method. Based on the experimental data, the optimum conditions for the full removal of lead ions with an initial concentration of 30 ppm, include pH 6, a sorbent dosage of 1.6 mg ml-1, a solution temperature of 25 ºC, and a contact time of 13 min. The experimental results showed that the adsorption of lead ions by copper oxide nanoparticles has a good fit with Langmuir isotherm and follows the pseudo-second-order kinetics model. The experimental data shows the synthesized CuO nanoparticles are an effective sorbent for the removal of Pb(II), Fe(II), and Cu(II) from water with maximum capacities of 33.7, 20.2, and 18.8 mg g-1, respectively. | ||
| کلیدواژه‌ها | ||
| Adsorption؛ Characterization؛ Copper Oxide Nanosorbent؛ Heavy Metal Ion؛ Sol-Gel؛ Pollutted Water | ||
| عنوان مقاله [English] | ||
| حذف یونهای فلزات سنگین از آبهای آلوده توسط نانوجاذب اکسید مس | ||
| نویسندگان [English] | ||
| حسن کرمی1؛ آناهتا قاسمی2 | ||
| 1آزمایشگاه تحقیقاتی نانو، بخش شیمی، دانشگاه پیام نور، ابهر، ایران | ||
| 22بخش شیمی، دانشگاه پیام نور، تهران، ایران | ||
| چکیده [English] | ||
| در این کار، نانوجاذب اکسید مس (CONS) با قطر متوسط 30 نانومتر به روش سل-ژل مبتنی بر پلی وینیل الکل برای حذف یون های فلزات سنگین از محلول آبی سنتز میشود. نانوپودر تولید شده به طور کامل با میکروسکوپ الکترونی عبوری (TEM)، میکروسکوپ الکترونی روبشی (SEM)، پراش پرتو ایکس (XRD) و پراکندگی نور پویا (DLS) مشخصهیابی میشود. پارامترهای فیزیکی و شیمیایی مختلف مانند pH محلول، دوز نانوجاذب، دمای محلول، زمان تماس (اختلاط)، غلظت اولیه یون سرب و حجم اولیه نمونه یون سرب به روش یک عامل در یک زمان بررسی و بهینه سازی میشوند. بر اساس داده های تجربی، شرایط بهینه برای حذف کامل یونهای سرب با غلظت اولیه ppm 30، 6 pH، دوز جاذب mg ml-1 6/1، دمای محلول 25 درجه سانتیگراد و زمان تماس 13 دقیقه میباشد. نتایج تجربی نشان داد که جذب یونهای سرب توسط نانوذرات اکسید مس با ایزوترم لانگمویر هماهنگی خوبی دارد و از مدل سینتیک شبه مرتبه دوم پیروی میکند. دادههای تجربی نشان میدهد که نانوذرات CuO سنتز شده به ترتیب با حداکثر ظرفیتهای 7/23، 2/20 و mg g-1 8/18 جاذب مؤثری برای حذف یونهای سرب (II)، آهن (II) و مس (II) از آب میباشد. | ||
| کلیدواژه‌ها [English] | ||
| جذب, مشخصهیابی, نانوجاذب اکسید مس, یون فلزات سنگین, سل-ژل, آب آلوده | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 37 تعداد دریافت فایل اصل مقاله: 17 |
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