Volume 23, Issue 12 (Mar 2016)                   JSSU 2016, 23(12): 1155-1168 | Back to browse issues page

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Yazdanbakhsh A, Rafiee M, Daraei H, Kamali H. Amoxicillin Oxidative Degradation Synthesized by Nano Zero Valent Iron. JSSU. 2016; 23 (12) :1155-1168
URL: http://jssu.ssu.ac.ir/article-1-3384-en.html
Abstract:   (4709 Views)

Introduction: Amoxicillin is one of the most important groups of pharmaceuticals that benefits humans and animals. However, antibiotics excertion in wastewaters and environment have emerged as a serious risk to the biotic environment, and their toxic effects can harm the organisms. Iron-based metallic nanoparticles have received special attention in regard with remediation of groundwater contaminants. In the typical nZVI-based bimetallic particle system, Fe acts as the reducing agent. Thus, the present study aimed to evaluate the synthesis and characteristics of nZVI in regard with degrading AMX.

Methods: In this study, nZVI nanoparticles were synthesized using the liquid-phase reduction method by EDTA as a stabilizer material. Structure and properties of nanoparticles were characterized by BET, SEM, XRD and EDX analysis. A multi-variate analysis was applied using a response surface methodology (RSM) in order to develop a quadratic model as a functional relationship between AMX removal efficiency and independent variables ( initial pH values, dosage of nZVI, contact time and amoxicillin concentration). The four independent variables of solution pH (2–10), AMX concentration (5-45mg/l), contact time (5-85 min) and nanoparticles dose (0.25 – 1.25 g) were transformed to the coded values.

Results: The study results demonstrated that more than 69 % of AMX was removed by nZVI. The optimal AMX removal conditions using nZVI were found as 1.25 g of nZVI, pH 4, contact time of 80 min and concentration of 30 mg/l.

Conclusions: The ability of nZVI in degradation of AMX revealed that these materials can serve as a potential nano material with respect to the environmental remediation.

Full-Text [PDF 619 kb]   (1764 Downloads)    
Type of Study: Original article | Subject: Public Health
Received: 2015/09/3 | Accepted: 2016/01/3 | Published: 2016/04/3

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