| Heavy metal pollution in water is of global environmental concern and heavymetal pollution control is considered as a key point inmany regions and countries.. Thesources of the heavy metal include metal mines, non-ferrous metal smelting, steel,electroplating, petroleum chemical industry, leather making and photograph industries.The methods for removal of heavy metal ion in wastewater involve physical methods,chemical methods, biological methods and new composite processing methods. Amongthem, adsorption method, one of the physical methods, has attracted a lot of attentionbecause of its simple handling, low-cost, and high efficiency.The search for novel absorbents has become a hot topic on the field of adsorptionmethod. Adsorbents should be of high efficiency and low energy consumption. Theintroductions of new technology and new material are the best two ways to improve theproperties of new absorbents.In this paper, magnetic technology and nanotechnology were introduced toprepare our adsorbent. The nanocomposite adsorbent was synthesized with the iron saltco-precipitation method followed by direct encapsulation with pectin coating withoutcross linking with calcium ions. The physicochemical property of the preparedadsorbent was investigated by the scanning electron microscopy (SEM), infraredspectrometry (FTIR), X-ray energy dispersive analysis (EDAX), BET surface areadetermination, Zeta potential measurement and analysis of magnetization curve refers.SEM images showed pectin–iron oxide magnetic nanocomposite (PIOMN)adsorbent was spherical in shape. FTIR spectra provided the evidence that pectin wassuccessfully coated on the surface of iron oxide nanoparticles. The interaction betweencopper ions and pectin on PIOMN surface was elucidated from energy EDAX spectra.The maximum adsorption capacity was48.99mg/g, attesting to the ion exchange andelectrostatic force mechanism during the adsorption process. Furthermore, theadsorbents can be recycled, the effect is remarkable. |
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