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|Title:||Comparative study on biosorption of Zn(II), Cu(II) and Cr(VI) from textile dye effluent using activated rice husk and activated coconut fibre|
|Keywords:||Biosorption;Zinc;Copper;Chromium;Textile dye effluent|
|Abstract:||This paper reports the results of the study on the performance of the low cost adsorbents such as activated rice husk (ARH) and activated coconut fibre (ACF) in removing the heavy metals such as Zn(II), Cu(II) and Cr(VI) from textile dye effluent. Biosorption studies are carried out through various parameters such as adsorbent dosage, pH and contact time. Removal of heavy metal ions from the textile dye effluent increases with increase in adsorbent dosage. In ARH, at 50 g/L the maximum of 62%, 68% and 65% removal of Zn(II), Cu(II) and Cr(VI) are obtained respectively, whereas, in ACF, at 50 g/L the maximum of 64%, 67% and 72% removal of Zn(II), Cu(II) and Cr(VI) are obtained respectively. In the effect of pH, the maximum removal of metal ions occurs at pH 1-3 for both the adsorbents. In contact time, the maximum removal of heavy metal ions is observed at optimum time of 300 min. The maximum removal of heavy metal ions from the textile dye effluent using ARH and ACF is evaluated successfully through the percentage of seed germination of Vigna mungo L with the treated adsorbents. On comparison, ACF is good adsorbent when compared with ARH.|
|ISSN:||0975-0991 (Online); 0971-457X (Print)|
|Appears in Collections:||IJCT Vol.18(1) [January 2011]|
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