| dc.description.abstract | Using algae in biosorption process is considered as a good method for removal
copper because of low cost, high efficiency in low copper concentration,
possibility of metal recovery. In this study, Copper absorption capacity of
Nannochloropsis oculata, Isochrysis galbana in viable form, non-viable form and
dry aquatic plant Ceratophyllum demersum were carried out under various
experimental conditions. The effect of pH, initial copper concentration,
biosorbent concentration and contact time has been investigated following by the
bath absorption method. Nannochloropsis oculata and Isochrysis galbana in
viable form have no capacity for copper absorption because of copper toxicity to
algae cell. On the other hand, for non-viable form, the optimal condition of
biosorption process for pH is 4.7 (nature pH of medium 0.5 g Cu/L) and contact
time from three to four hours when copper removal yield constant. The higher
copper removal yield in all treatments found in dry Ceratophyllum demersum
treatment, for 1 g dry this aquatic plant can remove 0.41 g Cu reaches 41%
total copper in solution, which is four times of Nannochloropsis oculata,
Isochrysis galbana in same condition. The biosorption capacity increased with
increase in the amount of biosorbent used for removal. These results could be
useful for removing copper in solution contaminated below 1 g Cu/L.
Keywords: Biosorption, copper, viable form, non-viable form, Nannochloropsis
oculata, Isochrysis galbana, Ceratophyllum demersum. | en_US |
