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Synthesis of chitosan zero-valent iron nanoparticles-supported for cadmium removal: characterization, optimization and modeling approach

2017; UWA Publishing; Volume: 66; Issue: 2 Linguagem: Inglês

10.2166/aqua.2017.027

1365-2087

Mehdi Ahmadi, Majid Foladivanda, Nemat Jaafarzadeh, Zahra Ramezani, Bahman Ramavandi, Sahand Jorfi, Babak Kakavandi,

Adsorption and biosorption for pollutant removal

Research Article| January 30 2017 Synthesis of chitosan zero-valent iron nanoparticles-supported for cadmium removal: characterization, optimization and modeling approach Mehdi Ahmadi; Mehdi Ahmadi 1Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran3Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Search for other works by this author on: This Site PubMed Google Scholar Majid Foladivanda; Majid Foladivanda 3Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Search for other works by this author on: This Site PubMed Google Scholar Nemat Jaafarzadeh; Nemat Jaafarzadeh 1Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran3Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Search for other works by this author on: This Site PubMed Google Scholar Zahra Ramezani; Zahra Ramezani 2Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Search for other works by this author on: This Site PubMed Google Scholar Bahman Ramavandi; Bahman Ramavandi 4Department of Environmental Health Engineering, Bushehr University of Medical Sciences, Ahvaz, Iran E-mail: Kakavandi.b@ajums.ac.ir Search for other works by this author on: This Site PubMed Google Scholar Sahand Jorfi; Sahand Jorfi 1Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran3Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Search for other works by this author on: This Site PubMed Google Scholar Babak Kakavandi Babak Kakavandi 1Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran3Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran5Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2017) 66 (2): 116–130. https://doi.org/10.2166/aqua.2017.027 Article history Received: April 29 2016 Accepted: October 26 2016 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Mehdi Ahmadi, Majid Foladivanda, Nemat Jaafarzadeh, Zahra Ramezani, Bahman Ramavandi, Sahand Jorfi, Babak Kakavandi; Synthesis of chitosan zero-valent iron nanoparticles-supported for cadmium removal: characterization, optimization and modeling approach. Journal of Water Supply: Research and Technology-Aqua 15 March 2017; 66 (2): 116–130. doi: https://doi.org/10.2166/aqua.2017.027 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Herein, chitosan (CS) impregnated with nanoparticles of zero-valent iron (NZVI) was fabricated onto a magnetic composite of CS@NZVI as an adsorbent for cadmium (Cd2+) removal from aqueous solution. The characteristics of CS@NZVI were analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, CHONS and Brunauer, Emmett and Teller techniques. The average diameter of NZVI was found to be 50 nm, and it was successfully coated onto the CS. The influential experimental variables such as contact time, solution pH, adsorbent dosage and initial Cd2+ concentration were investigated to determine optimum conditions. Results revealed that with an optimum dosage rate of 0.6 g/L, Cd2+ concentration was reduced from 10 to 0.016 mg/L within 90 min reaction time at pH of 7 ± 0.2. Experimental data were fitted to the Freundlich and pseudo-second-order models. Maximum adsorption capacity was obtained from the Langmuir monolayer 142.8 mg/g. Desorption experiments showed that the CS@NZVI had good potential with regard to regeneration and reusability, and its adsorption activity was preserved effectively even after three successive cycles owing to its good stability. As a conclusion, CS@NZVI can be considered as an effective adsorbent for heavy metals removal from water and wastewaters, because it can be separated both quickly and easily, it has high efficiency, and it does not lead to secondary pollution. adsorption, cadmium, chitosan, magnetic composite, ZVI nanoparticles © IWA Publishing 2017 Supplementary data Supplementary material- docx file You do not currently have access to this content.