TY - JOUR
T1 - Removal of tributyltin (TBT) by live and dead microalgal cells
AU - Tam, Nora F.Y.
AU - Chong, A. M.Y.
AU - Wong, Y. S.
N1 - Funding Information:
The work described in this paper was substantially supported by a grant from the Research Grant Council, HKSAR (Ref. no. CityU 9040661). The authors would also like to thank Mr. Benz Chan for his assistance in the GC analyses.
PY - 2002/9
Y1 - 2002/9
N2 - The removal of tributyltin (TBT) from artificial wastewater by dead and live cells of four microalgal species, Chlorella miniata, C. sorokiniana, Scenedesmus dimorphus and S. platydiscus was investigated. Dead cells were generally more efficient in removing TBT during three days exposure. More than 90% and 85% TBT were removed by dead cells of Scenedesmus and Chlorella, respectively. Although the removal percentages of live microalgae were smaller, TBT was continuously absorbed and degraded, and TBT removal percentages similar to respective dead cells were achieved at the end of 14 days treatment. Degradation products, DBT and MBT, were recorded mainly inside the cells, and intracellular MBT concentrations were significantly higher than DBT. In terms of TBT removal, Scenedesmus cells were more effective than Chlorella, probably due to larger cell sizes and biomass. However, TBT specific uptake and degradation by Chlorella was higher than in Scenedesmus. The highest specific TBT uptake values, as well as the highest degradation, were recorded in C. miniata, a Hong Kong isolate.
AB - The removal of tributyltin (TBT) from artificial wastewater by dead and live cells of four microalgal species, Chlorella miniata, C. sorokiniana, Scenedesmus dimorphus and S. platydiscus was investigated. Dead cells were generally more efficient in removing TBT during three days exposure. More than 90% and 85% TBT were removed by dead cells of Scenedesmus and Chlorella, respectively. Although the removal percentages of live microalgae were smaller, TBT was continuously absorbed and degraded, and TBT removal percentages similar to respective dead cells were achieved at the end of 14 days treatment. Degradation products, DBT and MBT, were recorded mainly inside the cells, and intracellular MBT concentrations were significantly higher than DBT. In terms of TBT removal, Scenedesmus cells were more effective than Chlorella, probably due to larger cell sizes and biomass. However, TBT specific uptake and degradation by Chlorella was higher than in Scenedesmus. The highest specific TBT uptake values, as well as the highest degradation, were recorded in C. miniata, a Hong Kong isolate.
KW - Absorption
KW - Adsorption
KW - DBT
KW - Degradation
KW - MBT
KW - TBT
UR - http://www.scopus.com/inward/record.url?scp=0036742365&partnerID=8YFLogxK
U2 - 10.1016/S0025-326X(02)00184-4
DO - 10.1016/S0025-326X(02)00184-4
M3 - Article
C2 - 12398407
AN - SCOPUS:0036742365
SN - 0025-326X
VL - 45
SP - 362
EP - 371
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 1-12
ER -