1. Green synthesis of magnetic iron nanoparticles coated by olive oil and verifying its efficiency in extraction of nickel from environmental samples via UV–vis spectrophotometry 
Zarrin Es’haghi, Fatemeh Vafaeinezhad, Sara Hooshmand 
Process Safety and Environmental Protection 
Volume 102, Pages (July 2016)
DOI: /j.psep
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2. Fig. 1
General chemical structure of olive oil (triglyceride). R1, R2 and R3 are alkylgroups (approx. 20%) or alkenyl groups (approx. 80%).
Process Safety and Environmental Protection  , DOI: ( /j.psep )
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3. Fig. 2 A schematic for adsorption of Ni(II) by MNPs.
Process Safety and Environmental Protection  , DOI: ( /j.psep )
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4. Fig. 3
(a, b) SEM images of magnetic iron nanoparticles coated with olive oil.
Process Safety and Environmental Protection  , DOI: ( /j.psep )
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5. Fig. 4 FT-IR analysis of coated Fe3O4 nanoparticles.
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6. Fig. 5 A schematic of MNPs modificated by olive oil and Ni absorption.
Process Safety and Environmental Protection  , DOI: ( /j.psep )
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7. Fig. 6
Effect of the feed solution pH on the adsorption amount of Ni(II); experimental conditions: 0.1g of MNPs; feed volume, 15ml; disperser solvent, ethanol; adsorption time, 20min.
Process Safety and Environmental Protection  , DOI: ( /j.psep )
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8. Process Safety and Environmental Protection 2016 102, 403-409DOI: (10
Process Safety and Environmental Protection  , DOI: ( /j.psep )
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