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:: Volume 3, Issue 4 (winter 2018) ::
3 2018, 3(4): 250-264 Back to browse issues page
Investigating the Efficiency of Zero-Valent Iron Nanoparticles (nZVI) Produced by Green Synthesis in Removing the Acid Black 1 from Aqueous Solution: A Kinetic and Isotherm Study
Y Rashtbari, Sh Afshin, P Pourali, M Vahdat, Y Poureshgh , M Fazlzadeh
Ardabil University of Medical Sciences
Abstract:   (317 Views)
Background & objectives: Acid black 1 dye is one of the major dangers for human health and environment due to its benzene rings, poisonousness, mutagenicity, carcinogenicity and late degradability. The current research was aimed at determining optimum conditions for removing AB-1 from aqueous solutions through synthesized nZVI nanoparticles using green method.
Methods: The structure and morphology of nanocomposites was investigated using FTIR and SEM techniques. The dye density was determined using spectrophotometer in the wavelength of 618nm. The reaction time of the variables, pH of the solution, absorption amount and the dye’s density were all evaluated in this study. To determine the isotherm and absorption kinetic, two isotherm models of Langmuir and Freundlich as well as pseudo-first and second order kinetic models were utilized.
Results: Having synthesized nZVI nanoparticles through green method, the correctness of the produced nanoparticles’ structure was evaluated using physical-chemical analyses. During optimum conditions, the removal efficiency for AB-1 with the density of 50 mg/L, the dose of nanoparticle of 1g/L, the pH equal to 3 and the time of reaction as 60 min, was 96.3%. The results of investigating isotherm and absorption kinetic for AB-1 indicated that absorption process followed Freundlich’s isotherm and pseudo-second order kinetic. The maximum absorption capacity of the nanoparticles determined to be 76.34mg/g using Langmuir model.
Conclusion: The present research showed that nZVI nanoparticles could be used as an effective absorbent for the removal of AB-1 dye from aqueous solutions. 
Keywords: Surface Absorption; Green Synthesis; Acid Black 1; Zero Valent Iron Nanoparticle
 
Keywords: Surface Absorption, Green Synthesis, Acid Black 1, Zero Valent Iron Nanoparticle
Full-Text [PDF 395 kb]   (77 Downloads)    
Type of Study: Research | Subject: General
Received: 2019/06/20 | Accepted: 2019/06/20 | Published: 2019/06/20
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Rashtbari Y, Afshin S, Pourali P, Vahdat M, Poureshgh Y, Fazlzadeh M. Investigating the Efficiency of Zero-Valent Iron Nanoparticles (nZVI) Produced by Green Synthesis in Removing the Acid Black 1 from Aqueous Solution: A Kinetic and Isotherm Study . 3. 2018; 3 (4) :250-264
URL: http://oeh.arums.ac.ir/article-1-163-en.html


Volume 3, Issue 4 (winter 2018) Back to browse issues page
فصلنامه سلامت محیط و کار Occupational and Environmental Health
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