Abstract
In present study, removal of nickel ions (Ni (II)) from synthetic wastewater using Fe3O4 nanoparticles modified by oak shell was investigated. The FTIR analysis of the adsorbent suggested the occurrence of interaction between the carboxyl group on oak shell modified magnetic nanoparticles (OSMMN) surface and Ni (II). Also, the morphology and size of the adsorbent were observed by SEM and TEM. Additionally, the effect of different parameters such as contact time, adsorbent dose, solution pH and initial concentration of nickel (II) ions were investigated on the adsorption of nickel. The adsorption experiments showed that the maximum Ni(II) adsorption was obtained as contact time = 15 min, temperature = 25 °C, adsorbent dosage = 2.6 g/L, and pH = 4.5. In these conditions, 93.88% Ni(II) was removed from aqueous solution. Moreover, in order to study equilibrium behavior of adsorption, Langmuir and Freundlich isotherm models were applied. The results showed that the experimental data were fitted well with the Langmuir isotherm model, and the maximum adsorption capacity of the adsorbent using Langmuir model was determined to be 454.54 mg/g which was a considerable amount.
Highlights
Heavy metal contamination of water is a common phenomenon
The purpose of this study was to determine the potential and adsorption capacity of Fe3O4 nanoparticles modified by oak shell (OSMMN) for the removal of Ni (II) from aqueous solution
Nickel was purchased from Sigma-Aldrich (Germany) and oak shell was were collected from local trees
Summary
The effluent of a number of industrial and metallurgical processes like plating, photography, aerospace, atomic energy and petrochemical facilities can result heavy metals pollution in the water resources, if the metal content is not treated.[1,2] So, the discharge of heavy metals into an aquatic ecosystem has become a matter of concern over the last decades because of their extreme toxicity and tendency for bioaccumulation in the food chain even in relatively low concentrations.[3] Pollutants of serious concern include lead, chromium, mercury, uranium, selenium, zinc, arsenic, cadmium, gold, copper and nickel.[4] Nickel is a toxic heavy metal that is widely used in silver refineries, electroplating, zinc base casting and storage battery industries.[5] The chronic toxicity of nickel to humans and the environment has been well documented. It is essential to remove Ni (II) from industrial wastewater before being discharged
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
