Estudo do potencial adsorvente da fibra de coco (Cocos nucifera L.) sobre os metais: chumbo, níquel e zinco

Abstract

The agro-industrial waste, in result of produced volume and the inappropriate disposition, are potential environmental contaminants and its natural resources. Therefore, when efficiently managed are capable of being highly harnessed in multiple applications, maximizing your use and saving costs. This is the case of Brazilian tall coconut which 85% of its weight is dispensed, although presents potential of reuse because your physical chemicals characters. Between your applications there is metals removal in aqueous solution through adsorption. So, the present work purposed to analyze the potentialities of using this residue to lead, nickel and zinc adsorption through previous studies, since they are toxic metals very used in industrial sector. For this, research was carried out on academic websites on the subject, and the studies were ordered according to the analyzed requirements. Thus, possible preparations of coconut fiber, pre-treatments and methods of interaction between the adsorbent and the metal were verified, in addition to the fiber's ability to adsorb the metals of interest. Finally, there were possible to prove a high adsorbent potential of the fiber, however, due to the diversity of conditions and methods used in the analyzed studies, it was not possible to indicate the best methodology applied. However, the importance of proper disposal of the residue became evident, in behalf of the socioeconomic and environmental gains from the generation of added value of the residue and the relevance of the application, since it directly contributes to the preservation and conservation of the environment.