Heavy metal uptake capacity of fresh water algae (Oedogonium westti) from aqueous solution: A mesocosm research

The green macroalgae present in freshwater ecosystems have attracted a great attention of the world scientists for removal of heavy metals from wastewater. In this mesocosm study, the uptake rates of heavy metals such as cadmium (Cd), nickel (Ni), chromium (Cr), and lead (Pb) by Oedogonium westi (O....

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Bibliographic Details
Published in:International journal of phytoremediation 2016-04, Vol.18 (4), p.393-398
Main Authors: Shamshad, Isha, Khan, Sardar, Waqas, Muhammad, Asma, Maliha, Nawab, Javed, Gul, Nayab, Raiz, Arjumand, Li, Gang
Format: Article
Language:English
Subjects:
adsorption
Algae
Aqueous solutions
Biodegradation, Environmental
Bioremediation
Cadmium
Chlorophyta - chemistry
Chlorophyta - metabolism
Chromium
Environmental Restoration and Remediation - instrumentation
Environmental Restoration and Remediation - methods
freshwater
freshwater ecosystems
Heavy metals
lead
Lead (metal)
macroalgae
Metals, Heavy - analysis
Metals, Heavy - metabolism
Nickel
Oedogonium
Oedogonium westti
phytoremediation
removal
scientists
toxic heavy metals
toxicity
Uptakes
wastewater
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - metabolism
Water Purification - instrumentation
Water Purification - methods
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Summary:The green macroalgae present in freshwater ecosystems have attracted a great attention of the world scientists for removal of heavy metals from wastewater. In this mesocosm study, the uptake rates of heavy metals such as cadmium (Cd), nickel (Ni), chromium (Cr), and lead (Pb) by Oedogonium westi (O. westti) were measured. The equilibrium adsorption capabilities of O. westti were different for Cd, Ni, Cr, and Pb (0.974, 0.418, 0.620, and 0.261 mgg –¹, respectively) at 18°C and pH 5.0. Furthermore, the removal efficiencies for Cd, Cr, Ni and Pb were observed from 55–95%, 61–93%, 59–89%, and 61–96%, respectively. The highest removal efficiency was observed for Cd and Cr from aqueous solution at acidic pH and low initial metal concentrations. However, the removal efficiencies of Ni and Pb were higher at high pH and high concentrations of metals in aqueous solution. The results summarized that O. westti is a suitable candidate for removal of selected toxic heavy metals from the aqueous solutions.
ISSN:1549-7879
1522-6514
1549-7879
DOI:10.1080/15226514.2015.1109594