منوی کاربری
  • پشتیبانی: ۴۲۲۷۳۷۸۱ - ۰۴۱
  • سبد خرید

دانلود رایگان مقاله انگلیسی حذف سریع فلزات سنگین توسط نانوسیم های اکسید قلع در تکنیک استخراج فاز جامد - اشپرینگر 2018

عنوان فارسی
حذف سریع فلزات سنگین توسط نانوسیم های اکسید قلع به عنوان جاذب های جدید در تکنیک استخراج فاز جامد
عنوان انگلیسی
Ultrafast removal of heavy metals by tin oxide nanowires as new adsorbents in solid-phase extraction technique
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
8
سال انتشار
2018
نشریه
اشپرینگر - Springer
فرمت مقاله انگلیسی
PDF
نوع مقاله
ISI
نوع نگارش
مقالات پژوهشی (تحقیقاتی)
رفرنس
دارد
پایگاه
اسکوپوس
کد محصول
E9470
رشته های مرتبط با این مقاله
شیمی
گرایش های مرتبط با این مقاله
شیمی تجزیه
مجله
مجله بین المللی علوم و فن آوری محیط زیست - International Journal of Environmental Science and Technology
دانشگاه
Department of Chemistry - Faculty of Science - University of Qom - Iran
کلمات کلیدی
طراحی فاکتوریل، ایزوترم، نانوسیم SnO2، استخراج فاز جامد، حذف سریع فلزات سنگین
doi یا شناسه دیجیتال
https://doi.org/10.1007/s13762-017-1481-1
۰.۰ (بدون امتیاز)
امتیاز دهید
چکیده

Abstract


In the present research, the removal of lead(II) and copper(II) from aqueous solutions is studied, using SnO2 nanowires as new adsorbent on solid-phase extraction disk and compared with pine core and buttonwood as biosorbents. Batch adsorption experiments were performed as a function of pH, adsorption time, solute concentration and adsorbent dose for biosorbents. Also, the pH, transfer rate of solution and metal concentration were selected as experimental parameters for the removal of heavy metals by SnO2 nanowires. All of the parameters were optimized by experimental design method for sorbents. The experimental equilibrium adsorption data are tested for the Langmuir and Freundlich equations. Results indicate the following order to fit the isotherms: Langmuir[Freundlich, in case of lead and copper ions. The removal of Cu(II) and Pb(II) was performed by selected sorbents in the presence of interferences ions. This led to no remarkable decrease in the removal efficiency of SnO2 nanowires. Using the SnO2 nanowires in the wastewater treatment indicated 96.8 and 85.28% removal efficiency in only 7 min for Pb(II) and Cu(II), respectively. SnO2 nanowires were found as reusable sorbent. Therefore, SnO2 nanowires have a good potential for application in environmental protection.

نتیجه گیری

Conclusion


A rapid hydrothermal method was used for the synthesis of SnO2 nanowires. The high aspect ratio was achieved by controlling ammonia and tin chloride concentration. The removal efficiency of SNW-SPE was compared with pine core and buttonwood as biosorbents. The results show higher removal efficiency of SNW-SPE than biosorbents. The advantages of SNW-SPE are low interference with other metal ions in the removal efficiency, reusability, ultrafast removal and high surface area. The adsorption behaviors of heavy metal ions onto the SNW-SPE, pine core and buttonwood match well with Langmuir isotherms. Using the SNW-SPE as adsorbent, economical wastewater treatment without SNW leakage into water is feasible. The SNW is promising materials for pre-concentration and solidification of heavy metal ions from large volumes of solutions.


بدون دیدگاه