D. Sanyahumbi et al., REMOVAL OF LEAD FROM SOLUTION BY THE NONVIABLE BIOMASS OF THE WATER FERN AZOLLA-FILICULOIDES, Biotechnology letters, 20(8), 1998, pp. 745-747
Non-viable biomass of the aquatic fern, Azolla filiculoides, removed u
p to 93 mg lead/g biomass from solution. Lead removal varied from 30%
of the initial lead concentration at pH 1.5 to approximately 95% at pH
values of 3.5 and 4.5. Lead removal decreased to 30% of the initial l
ead concentration if the lead concentration was initially over 400 mg/
l. Lead removal remained at approximately 90% between 10 degrees C and
50 degrees C. Biomass concentration (4-8 mg/l) had little effect on l
ead removal.