Lead and Copper Adsorption Behaviour by Lemna gibba: Kinetic and Equilibrium Studies

Copper and lead were found in sediments of Chimaliapan Lake in the State of Mexico; these elements may come from local tanneries and other industries. The sorption behaviour of lead and copper by Lemna gibba sampled from the same lake was determined. The results showed that the removal capacity for...

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Bibliographic Details
Published in:Clean : soil, air, water air, water, 2017-08, Vol.45 (8), p.n/a
Main Authors: del Carmen Carreño‐De León, Maria, Flores‐Alamo, Nicolás, Solache‐Ríos, Marcos Jose, De la Rosa‐Gómez, Isaias, Díaz‐Campos, German
Format: Article
Language:English
Subjects:
Heavy metals
Lake water
Lemna gibba
Removal
Sediments
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Summary:Copper and lead were found in sediments of Chimaliapan Lake in the State of Mexico; these elements may come from local tanneries and other industries. The sorption behaviour of lead and copper by Lemna gibba sampled from the same lake was determined. The results showed that the removal capacity for lead (about 98.9%) was higher than for copper (60%). The maximum adsorption capacities were at pH 4 and highest for Pb(II). Adsorption kinetics showed that the experimental data fitted the pseudo‐first and ‐second order models (R2 = 0.99). Equilibrium data of Pb(II) fitted best to the Langmuir model and Cu(II) data to the Langmuir and Freundlich models. Lemna gibba or duckweed is found worldwide in freshwater, wetlands, lagoons and wastewater. It is easily adapted to different conditions and water systems and is able to grow at pH values from 3.5 to 10.5. Copper and lead are removed from sediments of a lake by L. gibba. The removal capacity is more efficient for lead (about 98.9%) than for copper (60%).
ISSN:1863-0650
1863-0669
DOI:10.1002/clen.201600357