Remoção dos hormônios 17β-estradiol e 17α-etinilestradiol de soluções aquosas empregando turfa decomposta como material adsorvente

Química Nova

Andreia N Fernandes²  Marcelo Giovanela²  Carlos A. P Almeida¹  Valdemar I Esteves¹  Maria M. D Sierra¹  Marco T Grassi¹ 

[1] ,Universidade de Caxias do Sul Centro de Ciências Exatas e Tecnologia Caxias do Sul RS ,Brasil

关键词: estradiol;    adsorption;    peat;   

DOI  :  10.1590/S0100-40422011000900009

来源: SciELO

【 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】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License