Volume 9, Issue 2 (2018)                   JMBS 2018, 9(2): 171-177 | Back to browse issues page

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Salmani N, Sayadi M, Rezaei M. Optimization of Adsorption Process of Cr (VI) from Aqueous Solution Using Biosynthesized Palladium Nanoparticles by Spirulina Platensis. JMBS 2018; 9 (2) :171-177
URL: http://biot.modares.ac.ir/article-22-24327-en.html
1- Environmental Sciences Department, Natural Resources & Environment ‎Faculty, University of Birjand, Birjand, Iran
2- Environmental Sciences Department, Natural Resources & Environment ‎Faculty, University of Birjand, Birjand, Iran, Natural Resources & Environment Faculty, University of Birjand, Pardis Amirabad, Birjand, South Khorasan. Postal Code: 9719113944 ‎ , mh_sayadi@birjand.ac.ir
3- Environmental Sciences Department, Natural Resources & Environment Faculty, University of Birjand, Birjand, Iran
Abstract:   (8256 Views)
Aims: Chromium has destructive effects on the environment and various chemical methods have been investigated for removal of Cr (VI), but high cost and environmental problems have led to using biological methods to remove chromium. The aim of this study was to optimize adsorption process of Cr from aqueous solution, using biosynthesized palladium nanoparticles by Spirulina Platensis.
Materials and Methods: In this experimental study, palladium nanoparticles were synthesized, using Spirulina Platensis and examined by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) methods. During the process of adsorption of chromium, pH, contact time, initial Cr concentration, and adsorbent dosage to optimization were optimized. Adsorption isotherms for Chromium were also determined on palladium nanoparticles based on Langmuir and Freundlich isotherm models.
Findings: The extract of Spirulina Platensis had the ability to synthesize palladium nanoparticles. The maximum removal was obtained at pH=2, initial chromium concentration=0.1mg/l, contact time=20 minutes, and adsorbent dosage=0.5g/l, and the removal percentage varied from 68.9% to 98.1%. RL for palladium nanoparticles was in the range of 0.17 to 0.95, showing that Langmuir model was suitable for adsorbent.
Conclusion: Biosynthesized palladium nanoparticles by Spirulina Platensis high efficiency in removing chromium in aqueous solutions.
Full-Text [PDF 905 kb]   (2335 Downloads)    
Subject: Agricultural Biotechnology
Received: 2016/05/1 | Accepted: 2017/05/31 | Published: 2018/06/21

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