Growth response of Scenedesmus to different concentrations of copper, cadmium, nickel, zinc, and lead

Shehata, Salwa A.; Badr, Sabah A.

doi:10.1016/0160-4120(80)90022-7

Cited by 20 publications

(8 citation statements)

References 8 publications

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“…Levy et al (2017) [19] reported that the effective concentrations of copper on the inhibition of the growth on the marine diatom Minutocellus polymorphous and the green algal Dunaliella tertiolecta at 96 h (96 h EC50) were 0.53, 0.68 mg/L, respectively. Some green microalgae such as Pediastrum, Pseudokirchneriella, and Chlorella could exhibit tolerance to heavy metals [20,21]. And the toxicity of heavy metals to green algae may depend on algal species.…”

Section: Algal Growthmentioning

confidence: 99%

Biosorption combined with lipid production and growth inhibition of copper on the microalgal Pediastrum sp.

Pham

2019

J. Viet. Env.

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The contamination of heavy metals in surface waters is an environmental concern due to their persistence and non-degradation that poses a risk to the ecosystem and human health. Microalgae have been known for their ability to remove metals from wastewater and to produce biodiesel. In this study, the copper (Cu) stress on the growth and lipid contents of the green microalgal Pediastrum sp. were evaluated along with the removal capacity. The green microalga was grown in a culture medium with the presence of copper at concentrations of 0, 0.1, 0.5, 2, 5 and 15 mg/L for one week. Results indicated that the growing tolerance levels of Pediastrum sp. in the presence of copper up to 2 mg/L and Cu inhibited the algal growth with the 96h-EC50 value of 6.67 mg/L. However, the Pediastrum sp. showed a promising metal removal efficiency. Cu removal was from 83 to 95% by Pediastrum sp. with an initial concentration of Cu less than 2 mg/L. The presence of a low level of Cu increased the lipid yield up to 18%, but a high concentration of Cu has resulted in low removal efficiencies and decreasing lipid accumulation. The present study suggested the potential of employing green microalgae for wastewater treatment and biodiesel. Ô nhiễm kim loại nặng trong nước mặt đang là vấn nạn môi trường ở nhiều quốc gia bởi vì kim loại nặng tồn tại lâu, khó có khả năng phân hủy và gây ảnh hưởng đến sức khỏe con người và hệ sinh thái. Vi tảo từ lâu được biết đến vì có khả năng loại bỏ kim loại nặng trong nước thải đồng thời tích lũy lipid cho sản xuất nhiên liệu sinh học. Trong nghiên cứu này khảo sát các tác động của đồng (Cu) như ức chế tăng trưởng, ảnh hưởng lên hàm lượng lipid tích lũy, khả năng loại bỏ kim loại cũng nhưhàm lượng kim loại tích lũy trong nội bào lên vi tảo lục Pediastrum sp. Vi tảo lục được phơi nhiễm với Cu ở các nồng độ 0, 0,1, 0,5, 2, 5 và 15 mg/L trong thời gian 1 tuần ở điều kiện phòng thí nghiệm. Kết quả cho thấy vi tảo lục Pediastrum sp. có khả năng chống chịu với Cu ở ngưỡng nồng độ nhỏ hơn 2 mg/L. Nồng độ gây ức chế sinh trưởng 50% sau 96h (96h-EC50) là 6,67 mg/L. Pediastrum sp. cho thấy có khả năng loại bỏ hiệu quả Cu ở ngưỡng nồng độ thấp hơn 2 mg/L với khả năng loại bỏ Cu lên đến 95%. Ở nồng độ Cu 0,1 và 0,5 mg/L cũng cho thấy gia tăng hàm lượng lipid 18% so với lô đối chứng, tuy nhiên khả năng loại bỏ kim loại Cu và hàm lượng lipid tích lũy giảm đi đáng kể khi Cu đồng ở ngưỡng 5 mg/L và 15 mg/L. Nghiên cứu này cho thấy có thể sử dụng vi tảo Pediastrum sp. để xử lý ô nhiễm Cu ở nồng độ thấp và thu hồi lipid cho sản xuất nhiên liệu sinh học.

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Section: Algal Growthmentioning

confidence: 99%

Biosorption combined with lipid production and growth inhibition of copper on the microalgal Pediastrum sp.

Pham

2019

J. Viet. Env.

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“…Several microalgae have been reported to tolerate multiple heavy metal species; for example, Phormidium sp. could tolerate the metals like copper, nickel, cadmium, and zinc at lower concentrations (2-5 mg L −1 ) and lead at relatively higher concentrations up to 30 mg L −1 (Shehata and Badr, 1980). could tolerate the metals like copper, nickel, cadmium, and zinc at lower concentrations (2-5 mg L −1 ) and lead at relatively higher concentrations up to 30 mg L −1 (Shehata and Badr, 1980).…”

Section: Heavy Metal Removal By Microalgaementioning

confidence: 99%

Algae-Based Bioremediation

Ravishankar

2016

Bioremediation and Bioeconomy

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“…al., 1980;LAZINSKY;SICKO-GOAD, 1983;TORNQVIST;CLAESSON, 1987;GENSEMER, 1990;VISVIKI;RACHLIN, 1992;RODRIGUEZ et. al., 2011), and ultrastructures (GUPTA;ARORA, 1978;SHEHATA;BADR, 1980;HEUMANN, 1987) of algae. They changed (Cu, Cd, Cr, Ni, Zn) photosynthetic activity SINGH, 1987;RAIZADA, 1988;GUPTA, 1989;CHANG, 1991), respiration (Cu, Ni), carbon dioxide and other nutrients absorption (PETERSON et.…”

Section: Climatic Changes and Primary Productivitymentioning

confidence: 99%

Climatic changes, nutrient imbalance and primary productivity in aquatic ecosystems

Anastácio¹,

Azeiteiro²,

Pereira³

2012

TropOcean

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Propósito – É intuito dos autores, suportado por uma mini revisão de informação publicada, apresentar um cenário de possíveis consequências de alterações climáticas associadas a ciclos biogeoquímicos e à disponibilidade de nutrientes para o fitoplâncton e à inerente produção primária. Abordagem – Neste artigo assumem a possibilidade de que alterações associadas ao clima determinarão o desaparecimento de muitas espécies, uma redistribuição daquelas que prevalecerem, determinarão alterações na qualidade ambiental, assim como a alteração da qualidade e quantidade de massa e energia que estará disponível para os consumidores. Implicações – Alteração de fatores dos quais os produtores primários estão dependentes, a qualidade e quantidade de energia eletromagnética, a proporção de gases e a quantidade de poeiras em suspensão na atmosfera, alterações nos padrões de temperatura, a acidificação da hidrosfera, a introdução e ou remobilização de nutrientes e de substâncias tóxicas associadas aos ciclos biogeoquímicos e a exploração não sustentável de recursos, poderá reduzir o fluxo de energia para os níveis tróficos mais elevados, com possível impacto na segurança alimentar das populações à escala local, regional ou global. Originalidade – Os autores salientam as possíveis consequências na diversidade fitoplanctónica e na produtividade primária dos oceanos devido a um eventual abaixamento dos valores de pH associado à solubilização de dióxido de carbono na hidrosfera e à alteração no equilíbrio e na quantidade de nutrientes disponíveis. Palavras-chave: fitodiversidade; fitoplâncton; acidificação dos oceanos; metais, balanço de nutrientes; teia alimentar.

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Growth response of Scenedesmus to different concentrations of copper, cadmium, nickel, zinc, and lead

Cited by 20 publications

References 8 publications

Biosorption combined with lipid production and growth inhibition of copper on the microalgal Pediastrum sp.

Biosorption combined with lipid production and growth inhibition of copper on the microalgal Pediastrum sp.

Algae-Based Bioremediation

Climatic changes, nutrient imbalance and primary productivity in aquatic ecosystems

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