Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.

Human activities generate vast amounts of wastewater, which contains various toxic metals. Microalgae are able to remove heavy metals from wastewater and accumulate lipid to produce biodiesel. In this study, the abilities to remove copper (Cu) and accumulate lipid of the green algal species Scenede...

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Main Author: Thanh Luu Pham
Format: Article
Language:English
Published: Vietnam Ministry of Science and Technology 2022-04-01
Series:Vietnam Journal of Science, Technology and Engineering
Subjects:
Online Access:https://vietnamscience.vjst.vn/index.php/vjste/article/view/186
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author Thanh Luu Pham
author_facet Thanh Luu Pham
author_sort Thanh Luu Pham
collection DOAJ
description Human activities generate vast amounts of wastewater, which contains various toxic metals. Microalgae are able to remove heavy metals from wastewater and accumulate lipid to produce biodiesel. In this study, the abilities to remove copper (Cu) and accumulate lipid of the green algal species Scenedesmus sp. were examined. The microalga Scenedesmus sp. was exposed to Cu concentrations of 0, 0.5, 1, 2, 5, and 10 mg/l under laboratory conditions. The results indicated that Cu inhibited the growth of Scenedesmus sp. at a 96h-EC50 of 7.54 mg/l. Furthermore, the highest removal rate was 89.5%. Lipid accumulation was increased significantly to 23.6% with the addition of Cu at 5 mg/l. The present study indicated that the green alga Scenedesmus sp. possesses the ability to remove Cu from aqueous media and accumulate lipid in its cells. Our results suggested that this species could be applied in wastewater treatment technology and biodiesel production.
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spelling doaj.art-3a604131f45c4eca86b39564600239382023-02-01T08:12:54ZengVietnam Ministry of Science and TechnologyVietnam Journal of Science, Technology and Engineering2525-24612615-99372022-04-0161210.31276/VJSTE.61(2).65-70Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.Thanh Luu Pham0Institute of Tropical Biology, Vietnam Academy of Science and Technology; Graduate University of Science and Technology, Vietnam Academy of Science and Technology Human activities generate vast amounts of wastewater, which contains various toxic metals. Microalgae are able to remove heavy metals from wastewater and accumulate lipid to produce biodiesel. In this study, the abilities to remove copper (Cu) and accumulate lipid of the green algal species Scenedesmus sp. were examined. The microalga Scenedesmus sp. was exposed to Cu concentrations of 0, 0.5, 1, 2, 5, and 10 mg/l under laboratory conditions. The results indicated that Cu inhibited the growth of Scenedesmus sp. at a 96h-EC50 of 7.54 mg/l. Furthermore, the highest removal rate was 89.5%. Lipid accumulation was increased significantly to 23.6% with the addition of Cu at 5 mg/l. The present study indicated that the green alga Scenedesmus sp. possesses the ability to remove Cu from aqueous media and accumulate lipid in its cells. Our results suggested that this species could be applied in wastewater treatment technology and biodiesel production. https://vietnamscience.vjst.vn/index.php/vjste/article/view/186bioremediationgreen algaeheavy metallipid accumulationwater treatment
spellingShingle Thanh Luu Pham
Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.
Vietnam Journal of Science, Technology and Engineering
bioremediation
green algae
heavy metal
lipid accumulation
water treatment
title Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.
title_full Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.
title_fullStr Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.
title_full_unstemmed Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.
title_short Removal and bioaccumulation of copper by the freshwater green alga Scenedesmus sp.
title_sort removal and bioaccumulation of copper by the freshwater green alga scenedesmus sp
topic bioremediation
green algae
heavy metal
lipid accumulation
water treatment
url https://vietnamscience.vjst.vn/index.php/vjste/article/view/186
work_keys_str_mv AT thanhluupham removalandbioaccumulationofcopperbythefreshwatergreenalgascenedesmussp