Abolfazel Mossavi; Mohammad Armin; Hashem Akhlaghi
Volume 28, Issue 1 , January and February 2021, , Pages 83-88
Abstract
Introduction: Typical nanoparticle synthesis methods have disadvantages such as poor structure, low production rate, high production cost and high energy requirement. Therefore, today the tendency to use plant resources as one of the most suitable methods of nanoparticle synthesis is taken into consideration ...
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Introduction: Typical nanoparticle synthesis methods have disadvantages such as poor structure, low production rate, high production cost and high energy requirement. Therefore, today the tendency to use plant resources as one of the most suitable methods of nanoparticle synthesis is taken into consideration by researcher attention. Foeniculum vulgare is one of the most important medicinal plants in Iran that has the potential to synthesize nanoparticles from its seed or shoot extracts. In this study, the possibility of green synthesis of zero iron nanoparticles using fennel seed extracts was investigated. Materials and Methods: In this study, seed extract was used to synthesize green nanoparticles of iron particles.The antioxidant properties and the total amount of phenolic compounds of seed extract and extract containing nano-iron particles were determined. Structural analysis of iron nanoparticles was performed using scanning electron microscopy. Results: The formation of iron nanoparticles was confirmed by changing the color of the solution from yellow to brown. Both in the extract containing the seeds and in the extract containing iron nanoparticles, antioxidant properties were observed and adding iron nanoparticles increased the antioxidant properties of fennel. Structural analysis of iron nanoparticles using scanning electron microscopy showed that the shape of spherical particles and its dimensions are 200 nm. Conclusion: The results of this experiment showed that the fennel seed extract can be used to synthesize nanoscale zero-valent iron particles, and increasing the Zero nanoparticles increases its antioxidant properties. Received
Health and environment
Ahmad Allahabadi; Abolfazl Rahmani Sani; MohammadHossein Saghi; Hamideh Behrozikhah; Shahram Sadeghi; Mohammadreza Behrouzikhah
Volume 26, Issue 1 , March and April 2019, , Pages 63-71
Abstract
AbstractBackground: One of the most important environmental pollutants that there is in sewage of different industrials is cyanide to cause pollution of water sources that are dangerous to humans and the environment. Cyanide can be removed in different ways from the aqueous media, but most of these methods ...
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AbstractBackground: One of the most important environmental pollutants that there is in sewage of different industrials is cyanide to cause pollution of water sources that are dangerous to humans and the environment. Cyanide can be removed in different ways from the aqueous media, but most of these methods are costly. Therefore, the aim of this study is the removal cyanide using iron nanoparticles. Material and Methods: Removal of cyanide from aqueous media using iron nanoparticles in various conditions including the effect of the adsorbent, initial cyanide concentration, contact time and pH were studied in discontinuous phase. In this study, adsorption equilibrium and also the kinetics of the reaction examined.Results: In the process of sharing discontinuous, the balance was achieved after 120 minutes of contact time and maximum amount of removal cyanide in the pH =11 for cyanide concentration of 2.5 mg/L and 1 gr of nanoparticle over 97% obtained. Also the results showed that the adsorption process fitted with Langmuir isotherm and chemical kinetic fitted with of secondary grade.Conclusion: According to the findings, iron nanoparticles can be used as a suitable option for removal cyanide from aqueous solution in hazardous waste. Keywords: iron nanoparticles, cyanide, hazardous waste