Heavy Metal Uptake Kinetics of Microalgae in Aquatic Media
Küçük Resim Yok
Tarih
2009
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
WORLD SCIENTIFIC AND ENGINEERING ACAD AND SOC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Heavy metals as a group of hazardous contaminants in aquatic life are removed from the medium via biological processes Microalgae can efficiently utilize a combination of extracellular and intracellular adaptive and constitutive enzymes in the biochemical breakdown and assimilation of these inorganic materials. This study indicate the algal behavior under various metal conditions by indicating the algal uptake rates of metals and growth kinetics of algal biomass under controlled ligt and temperature conditions and under single-metal cases for zinc (Zn2+), copper (Cu2+) and iron (Fe2+). Algal biomass could tolerate up to 5 mg/l of each metals and could remove 37, 75 and 36% of Zn2+, Cu2+ and Fe2+, respectively. In all metals, metal removal followed first and second order kinetics together, while algal growth followed zero order kinetics during this reduction. Pseudo-first order kinetics were also checked and data found suitable for this. The highest removal rate, achieved in Fe2+ (0.00138 meq/L.d) was followed by Zn2+ (0.00107 meq/L.d) and then Cu2+ (0.00096 meq/L.d) while the order of growth rates was the same (0.0113, 0.0098 and 0.0055 for Fe2+, Zn2+ and Cu2+, respectively).
Açıklama
4th IASME/WSEAS International Conference on Water Resources, Hydraulics and Hydrology -- FEB 24-26, 2009 -- Cambridge, ENGLAND
Anahtar Kelimeler
Algae, zinc, copper, iron, uptake, kinetics
Kaynak
PROCEEDINGS OF THE 4TH IASME/WSEAS INTERNATIONAL CONFERENCE ON WATER RESOURCES, HYDRAULICS AND HYDROLOGY
WoS Q Değeri
N/A
