Accumulation and toxicity of organochlorines in green microalgae

Kováčik, Jozef; Antoš, Vojtěch; Micalizzi, Giuseppe; Dresler, Sławomir; Hrabák, Pavel; Mondello, Luigi

doi:10.1016/j.jhazmat.2017.12.056

Cited by 29 publications

(4 citation statements)

References 36 publications

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“…The effects of various pollutants especially heavy metals on phytoplankton have been well documented in terms of their toxic effects and mechanisms 20 , 21 , 25 , 38 – 40 . Previous studies have indicated that the metal toxicity increased with decreasing pH for the predominance of the free metal ions in the solution with the low pH.…”

Section: Discussionmentioning

confidence: 99%

The effect of pH on the acute toxicity of phenanthrene in a marine microalgae Chlorella salina

Chen

Zhe

Tian

et al. 2018

Sci Rep

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Phenanthrene is one of the most abundant polycyclic aromatic hydrocarbons (PAHs) found in continental shelf environment of China and is on the EPA’s Priority Pollutant list. In this study, the effects of phenanthrene on marine algal growth rate were determined after 96-h exposure at pH 6.0, 7.0, 8.0, 9.0, and 10.0 in seawater of salinity 35. Two measuring techniques to assess growth inhibition were also compared using prompt fluorescence and microscopic cell count. The results showed that the toxicity of phenanthrene increased significantly (p < 0.05) with decreasing pH, with the nominal concentration required to inhibit growth rate by 50%, EC50, decreasing from 1.893 to 0.237 mg L−1 as pH decreased from 9.0 to 6.0, with a decrease higher than 55% from 10.0 to 9.0. In addition, the nominal EC50 values calculated in this study were at the same range of some environmental concentrations of phenanthrene close to areas of crude oil exploration. Based on the two measuring techniques, the results showed that cell count and fluorescence measurement were significantly different (p < 0.05), and the nominal EC50 values calculated with cell count measurement were significantly higher than fluorescence measurement at pH 8.0, 9.0 and 10.0. In conclusion, the present studies confirmed that acidification of seawater could affect the toxicity of phenanthrene to this species of microalgae, and which encouraged further studies involving responses of marine organisms to ocean acidification.

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Section: Discussionmentioning

confidence: 99%

The effect of pH on the acute toxicity of phenanthrene in a marine microalgae Chlorella salina

Chen

Zhe

Tian

et al. 2018

Sci Rep

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“…Alternative scenario would be to assume additional 14 C contamination due to releases of organic compounds by the INPP. It is known that aquatic plants (as well as other aquatic organisms) can accumulate and metabolize organic compounds (at least in the molecular mass range <1.0 kDa) and these compounds or their metabolites incorporate into plants' tissues/cell walls and vacuoles [35][36][37][38][39]. Thus, these water-soluble organic compounds enriched in 14 C could enter the aquatic plants' metabolic system by sorption.…”

Section: Discussionmentioning

confidence: 99%

Modeling of 14C Vertical Distribution in Bottom Sediments of the Ignalina Nuclear Power Plant Cooling Reservoir

Barisevičiūtė

Maceika

Juodis

et al. 2021

Water

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The Ignalina Nuclear Power Plant (INPP) in Lithuania is a rare case when lake water is used instead of river or sea water for cooling. Lake Drūkšiai with water residence time of 3–4 year and undisturbed sediment layers is a unique system to assess the impact of a nuclear facility on the aquatic ecosystem with a sufficiently high temporal resolution. We constructed a model of radiocarbon cycling processes in lake ecosystem which evaluates the 14C specific activity vertical distribution in two organic sediment fractions: alkali-soluble and alkali-insoluble. Model calculations proved that during the first 15 years of operation since 1983, 14C annual aqueous releases from the INPP were in water dissolved inorganic carbon form and varied in the range of 2.4 ÷ 3.7 × 108 Bq/year. The results of the modeling of hypothetic scenarios also showed that there was the only one episode of elevated releases from the INPP in 2000–2001, which changed the interaction between the two organic sediment fractions for the period of 2000–2006. It was caused most probably by released chemicals from INPP but not by 14C contamination. Interaction processes between both sediment fractions recovered to its original state after 2006, indicating that the released additional chemical compounds lake ecosystem have been cleaned-up.

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“…The concentration of pesticide in the range of µg L −1 generally has no profound effect on microalgae, but at higher concentration, the toxicity of pesticides may lead to inhibition of cell growth [141]. In addition, for a given pesticide concentration, the metabolic responses exhibited by microalgae may vary by species [142]. Therefore, a detailed profiling on the tolerance of microalgae will be useful to create a database that can serve as a guideline for microalgae selection.…”

Section: Challenges and Future Research Directionsmentioning

confidence: 99%

Microalgae-Enabled Wastewater Treatment: A Sustainable Strategy for Bioremediation of Pesticides

Sean

Lau

Ismail

et al. 2022

Water

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Pesticides have been identified as major contaminants of various waterways. Being classified as potential endocrine disrupting compounds, pesticides in aqueous system are highly hazardous to aquatic organisms and the ecosystem. The treatment of pesticide-containing wastewater can be performed through several means, but a wastewater treatment strategy which emphasizes both treatment efficiency and sustainability is a necessity of current time. In this context, bioremediation has been increasingly promoted as an alternative technique for the remediation of diverse pollutants. Particularly, bioremediation which involves the utilization of microalgae for the removal or conversion of pesticides to the harmless or less harmful compounds is becoming a trend. Exploiting microalgae as a tool for wastewater treatment presents multiple advantages over conventional treatment technologies, which include an opportunity to simultaneously treat pesticide-containing wastewater and nutrient recovery for microalgae cultivation as well as less formation of toxic sludge. This review discusses the roles of microalgae in mitigating pesticide pollution issue, while offering an opportunity for nutrient recovery from various wastewater sources. Based on the current laboratory studies, the use of microalgae bioremediation as a promising strategy for pesticide treatment has been rationalized. The establishment of more pilot scale studies is highly encouraged to further facilitate the implementation of this treatment approach for practical application.

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Accumulation and toxicity of organochlorines in green microalgae

Cited by 29 publications

References 36 publications

The effect of pH on the acute toxicity of phenanthrene in a marine microalgae Chlorella salina

The effect of pH on the acute toxicity of phenanthrene in a marine microalgae Chlorella salina

Modeling of 14C Vertical Distribution in Bottom Sediments of the Ignalina Nuclear Power Plant Cooling Reservoir

Microalgae-Enabled Wastewater Treatment: A Sustainable Strategy for Bioremediation of Pesticides

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