Remediation of Rare Earth Element Pollutants by Sorption Process Using Organic Natural Sorbents

International Journal of Environmental Research and Public Health

Monica Butnariu³  Petru Negrea¹  Lavinia Lupa¹  Mihaela Ciopec¹  Adina Negrea¹  Marius Pentea³  Ionut Sarac³  Ionel Samfira³  Kiran Tota-Maharaj² 

[1] Politehnica University Timisoara, Faculty of Industrial Chemistry and Environmental Engineering, P–Ta Victoriei 2, Timisoara 300006, Romania; E-Mails:Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania” from Timisoara, Calea Aradului 300645, Romania;;Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania” from Timisoara, Calea Aradului 300645, Romania; E-Mails:

关键词: rare earth element;    bone powder;    model isotherms;   

DOI  :  10.3390/ijerph120911278

来源: mdpi

【 摘 要 】

The effects of the sorption of environmental applications by various source materials of natural organic matter, i.e., bone powder, was examined. Sorption capacities and subsequent rare earth element retention characteristics of all metals tested were markedly increased by ionic task-specific. In this study, the abilities of three models’ isotherms widely were used for the equilibrium sorption data: Langmuir, Freundlich and Redlich-Peterson. For all studied metal ions the maximum adsorption capacity is close to those experimentally determined. The characteristic parameters for each isotherm and related coefficients of determination have been determined. The experimental data achieved excellent fits within the following isotherms in the order: Langmuir > Redlich-Peterson > Freundlich, based on their coefficient of determination values. The bone powder has developed higher adsorption performance in the removal process of Nd(III), Eu(III), La(III) from aqueous solutions than in the case of the removal process of Cs(I), Sr(II) and Tl(I) from aqueous solutions. The described relationships provide direct experimental evidence that the sorption-desorption properties of bone powder are closely related to their degree of the type of the metal. The results suggest a potential for obtaining efficient and cost-effective engineered natural organic sorbents for environmental applications.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.