Investigation of Fe3O4 Nano particles Modified with Orange Peel Efficiency in Removal of Lead and Copper ions from Aqueous Environments
Message:
Abstract:
Introduction
Heavy metals with their entry into the food chain and water resources are considered as a serious threat to human health. This study aimed to survey Fe3O4 nano‌particles modified with orange peel efficiency in removal of lead and copper ions from aqueous environments.
Methods
This experimental research was implemented during the year 2012 and Fe3O4 nano‌particles were used as adsorbent which were modified with orange peel. Experiments were implemented under batch process by adsorbent (300 mg/L) with changing effective factors such as contact time (20, 40, 60, 80, 100, 150, 200, 250 minutes), pH (3-12), temperature (20, 30, 40, 50 ° C) and concentration of lead and copper ions (10, 20 mg/L). Kinetic adsorption and thermodynamic parameters were investigated according to the conditions of the theory.
Results
The maximum adsorption capacity of lead and copper ions on the adsorbent under optimum condition (contact time = 40 min, pH = 6 and temperature = 50 ° C) was obtained which turned out to be 70.06 and 71.21 mg/g respectively. Adsorption of lead and copper ions was according to pseudo-second-order kinetics and with relation to coefficients equal to 0.91 and 0.99 respectively and being fit with Langmuir adsorption model. Positive values of enthalpy (∆Ho) indicated the endothermic nature of the process and negative values of free energy (∆Go) thus indicating the spontaneity of the process.
Conclusion
Adsorption of lead and copper ions on the adsorbent under optimum condition turned out to be 98%. The results showed that Fe3O4 nano‌particles modified with orange peel can be an effective adsorbent for the removal of lead and copper ions from contaminated water resources.
Language:
Persian
Published:
Tolooe Behdasht, Volume:13 Issue: 2, 2014
Pages:
1 to 11
magiran.com/p1288349  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!