Toxicity of bisphenol A and its bioaccumulation and removal by a marine microalga Stephanodiscus hantzschii.
The toxicity of bisphenol A (BPA) to Stephanodiscus hantzschii, a diatom isolated from tidal water of Futian Mangrove Nature Reserve, China, and the bioaccumulation and removal capability of the marine microalga to BPA were investigated in the present study. Toxicity experiments showed that the 96-h EC50 of BPA was 8.65+/-0.26 mg/L, and the cell number and chlorophyll a content of S. hantzschii decreased significantly with increases in BPA at concentrations higher than 3.00 mg/L. S. hantzschii had high removal capability at low BPA concentrations as BPA was bioaccumulated and biodegraded by cells. After 16-day treatment, 88%, 99%, 92%, 61%, 48%, 28% and 26% of BPA were removed by the diatom in the media supplemented with 0.01, 0.10, 1.00, 3.00, 5.00, 7.00 and 9.00 mg/L BPA, respectively. The present study demonstrated that S. hantzschii was a tolerant isolate that could be used to remove BPA from contaminated waters.
Li
Rui
R
School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, People's Republic of China.
Chen
Gui-Zhu
GZ
Tam
Nora Fung Yee
NF
Luan
Tian-Gang
TG
Shin
Paul K S
PK
Cheung
S G
SG
Liu
Yu
Y
D000327:Adsorption; D001559:Benzhydryl Compounds; D001673:Biodegradation, Environmental; D002681:China; D017377:Diatoms / Q000378:metabolism*; D005068:Eutrophication; D006863:Hydrogen-Ion Concentration; D010636:Phenols / Q000302:isolation & purification* / Q000493:pharmacokinetics / Q000633:toxicity*; D012965:Sodium Chloride / Q000737:chemistry; D013997:Time Factors; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000302:isolation & purification* / Q000493:pharmacokinetics / Q000633:toxicity*; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D010636:Phenols; D012965:Sodium Chloride; D014874:Water Pollutants, Chemical; C006780:bisphenol A; D000098826:Bisphenol A Compounds