Removal of cyanobacteria toxins from drinking water by adsorption on activated carbon fibers

Materials Research

Eden Cavalcanti De Albuquerque Júnior²  Manoel Orlando Alvarez Méndez¹  Aparecido Dos Reis Coutinho¹  Telma Teixeira Franco² 

[1] ,State University of Campinas School of Chemical Engineering Campinas SP ,Brazil

关键词: activated carbon fibers;    cyanobacteria;    microcystins;    adsorption;    hemodialysis;   

DOI  :  10.1590/S1516-14392008000300023

来源: SciELO

【 摘 要 】

Natural fibers from macadamia nut shell, dried coconut shell endocarp, unripe coconut mesocarp, sugarcane bagasse and pine wood residue were used to prepare activated carbon fibers (ACF) with potential application for removing microcystins. The ACF from pine wood and sugar cane bagasse were used to remove [D-Leucine¹]MCYST-LR from water. After 10 minutes of contact time, more than 98% of toxin was removed by the ACF. The microcystin adsorption monolayer, q m, in the ACF recovered 200 and 161 µg.mg-1, with the Langmuir adsorption constant, K L, of 2.33 and 1.23 L.mg-1. Adsorption of [D-Leucine¹]MCYST-LR in continuous process was studied for a fixed-bed ACF prepared from coconut shell and sugar cane bagasse and for two commercial activated carbon samples from treatment water plants of two Brazilian hemodialysis centers. Saturation of the beds occurred after 80 to 320 minutes, and the adsorption capacity for that toxin varied from 4.11 to 12.82 µg.mg-1.

【 授权许可】

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