Removal of fluoranthene and pyrene by different microalgal species.
In this work, the efficiency of four microalgal species, namely, Chlorella vulgaris, Scenedesmus platydiscus, Scenedesmus quadricauda, and Selenastrum capricornutum to remove fluoranthene (1.0 mg l(-1)), pyrene (1.0 mg l(-1)), and a mixture of fluoranthene and pyrene (each at a concentration of 0.5 mg l(-1)) was evaluated. Results showed that removal was algal species specific and was also toxicant-dependent. Se. capricornutum was the most effective species while C. vulgaris was the least efficient species in removing and transforming polycyclic aromatic hydrocarbons (PAHs). PAHs removal in 7-days of treatment was 78% and 48%, respectively by these two. All species, except S. platydiscus exhibited higher fluoranthene removal efficiency than pyrene, indicating the latter PAH was generally more stable and recalcitrant. The removal efficiency of fluoranthene and pyrene in a mixture was comparable, or higher than the respective single compound, suggesting that the presence of one PAH stimulated the removal of the other PAH.
Lei
An-Ping
AP
College of Life Sciences, Shenzhen University, Shenzhen 518060, China.
Hu
Zhang-Li
ZL
Wong
Yuk-Shan
YS
Tam
Nora Fung-Yee
NF
D000460:Chlorophyta / Q000378:metabolism*; D005449:Fluorenes / Q000737:chemistry / Q000378:metabolism*; D017744:Medical Waste Disposal; D011721:Pyrenes / Q000737:chemistry / Q000378:metabolism*; D014865:Waste Disposal, Fluid
D005449:Fluorenes; D017744:Medical Waste Disposal; D011721:Pyrenes; C007738:fluoranthene; C030984:pyrene