Removal of Nickel by Chitosan/polyrhodanine nanocomposite

Nickel(II) has found extensive applications, especially in electerical applications. The pollution caused by these metal ions has become a serious problem with the rapid increase of global industrial activities. Among various methods for removal of heavy metals, adsorption is efficient method. Chiitosan/polyrhodanine (CS/PRh) nanocomposite has been synthesized by polymerization of rhodanine in chitosan solution and used as a novel adsorbent for nickel removal in aqueous solution. The obtained nanocomposite were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR). FTIR measurement exhibited the existence of relevant functional groups of both polyrhodanine and chitosan in the nanocomposite. The CS/PRh nanocomposite showed a great efficiency for the removal of the Ni(II) metal ions from the aqueous solution. The results showed that the maximum % removal of Ni (II) by this nanocomposite was about 86% at pH 7. From this result, it can be suggested that CS/PRh nanocomposite could serve as a promising adsorbent for Ni (II) in wastewater treatment technology.

کلیدواژه ها:

Nickel ، adsorption ، nanocomposite ، removal