Heavy metal uptake by Euglena gracilis cultivated on activated and digested sludge extracts

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Abstract

Euglena gracilis (367) cultivated on sludge extracts had higher growth sbtes than those cultivated on a standard Euglena medium. Two per cent sludge extracts gave the best growth rates, followed by 1% and 3% sludge extracts and the Euglena medium.
Activated sludge was better than digested sludge for the cultivation. Sludge extracts prepared by autoclaving gave better growth rates than those obtained by stirring (for 1 h using a blender), possibly because of the release of nutrients from organic compounds at the higher temperature. The chlorophyll and protein contents of the algal cells cultivated on different media were also in line with the growth rates. Higher contents of manganese, zinc and iron were observed in E. gracilis cultivated on sludge extracts, especially at higher concentrations. Copyright © 1980 Published by Elsevier Ltd.
Original languageEnglish
Pages (from-to)121-130
JournalEnvironmental Pollution Series A: Ecological and Biological
Volume21
Issue number2
DOIs
Publication statusPublished - Feb 1980

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Heavy metals
activated sludge
sludge
heavy metal
Chlorophyll
Organic compounds
Nutrients
Manganese
Zinc
Iron
Proteins
organic compound
manganese
chlorophyll
zinc
digested sludge
iron
protein
nutrient
Temperature

Bibliographical note

Wong, M. H. (1980). Heavy metal uptake by Euglena gracilis cultivated on activated and digested sludge extracts. Environmental Pollution Series A: Ecological and Biological, 21(2), 121-130. doi: 10.1016/0143-1471(80)90040-9