Removal of the hormones 17β-estradiol and 17α-ethinylestradiol from aqueous solutions employing a decomposed peat as adsorbent material

Química Nova

Universidade de Aveiro, Aveiro, Portugal¹  Fernandes, Andreia N¹  Universidade de Caxias do Sul, Caxias do Sul, Brasil¹  Universidade Federal de Santa Catarina, Florianópolis, Brasil¹  Grassi, Marco T¹  Giovanela, Marcelo¹  Esteves, Valdemar I¹  Almeida, Carlos A. P¹  Universidade Federal do Paraná, Paraná, Brasil¹  Sierra, Maria M. D¹  Universidade do Estadual do Centro Oeste, Guarapuava, Brasil¹ 

关键词: estradiol;    adsorption;    peat.;   

DOI  :  10.1590/S0100-40422011000900009

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This paper describes the adsorption of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) from aqueous solution by decomposed peat. The peat presented a good adsorption process, close to 76.2% for E2 removal and approximately 55.0% for EE2. Moreover, the results indicated a probable multi-layered process. Adsorption isotherms were well fitted by Freundlich model. The data were evaluated considering the pseudo-first-order and pseudo-second-order approaches, being the second more significant mechanism in the rate-controlling step. Thermodynamic data revealed that hormones adsorption onto peat is spontaneous under the employed experimental conditions. The results confirmed the potential of this adsorbent to be employed for effluents treatment.

【 授权许可】

Unknown