[Removal of humic substances using cerium-iron adsorbent].
Huan Jing Ke Xue
; 25(1): 83-6, 2004 Jan.
Article
em Zh
| MEDLINE
| ID: mdl-15330427
ABSTRACT
A rare earth metal inorganic adsorbent, cerium-iron adsorbent (CFA), was developed, and its performance for fulvic acid (FA) removal was evaluated. Experimental results show that rare earth metal adsorbent had a relatively high adsorption capacity and good kinetic property for FA ion under the pH range of 3.0-6.5, then the adsorption capacity decreased with the increase of pH. FA seriously inhibited the removal of arsenate, suggesting that the adsorption sites for As(V) and FA were similar. Fourier transform infrared (FTIR) spectra of CFA before and after FA adsorption demonstrated that M-OH groups plays an important role for FA removal. The pH(icp) is 5.6 through the measure of Zeta potential.
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Base de dados:
MEDLINE
Assunto principal:
Poluentes da Água
/
Cério
/
Purificação da Água
/
Substâncias Húmicas
/
Ferro
Idioma:
Zh
Ano de publicação:
2004
Tipo de documento:
Article