Removal of atrazine in catalytic degradation solutions by microalgae Chlorella sp. and evaluation of toxicity of degradation products via algal growth and photosynthetic activity

Hu, Naitao; Xu, Yinfeng; Sun, Chen; Zhu, Lianwen; Sun, Shiqing; Zhao, Yongjun; Hu, Chenyang

doi:10.1016/j.ecoenv.2020.111546

Cited by 53 publications

(10 citation statements)

References 38 publications

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“…Aeration was provided throughout the cultivation process. 18,19 After initial cultivation in 10-liter pots, the algae were subsequently mass-cultivated in 200 L. Light exposure was regulated using a luminometer device to optimize growth during the logarithmic phase. The algae were provided with aeration and the culture medium temperature was controlled for a period of 10 days.…”

Section: Algae Culturementioning

confidence: 99%

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Investigating the Growth Rate of Tetraselmis Algae and its Effect on Nitrogen Removal From Aquaculture Wastewater

Ghadamzadeh,

Jalilzadeh Yengejeh,

Javadzadeh

et al. 2024

Journal of Advances in Environmental Health Research

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Background: This research investigated the ability of Tetraselmis microalgae to remove nitrates from aquaculture centers’ wastewater. Specifically, this study aimed to investigate the amount of nitrogen reduction by Tetraselmis microalgae under laboratory conditions. Therefore, algal density, chlorophyll a, specific growth rate, nitrate, and ammonia levels were investigated. Methods: Tetraselmis microalgae was planted under laboratory conditions with constant density of 2000 mL including 1900 mL of distilled water and 100 mL of stock to investigate the refining effects for 15 days. Along to the test steps, the concentration of the mentioned factors was determined using standard methods and ultraviolet spectrophotometer. Results: The results showed that algal density, chlorophyll concentration, and specific growth rate performed better than others in the pilot plants containing wastewater. Also, use of the studied algae caused a 50% reduction in ammonia and 80% in nitrate from aquaculture center wastewater. The data modeling showed that the above-mentioned microalgae were effective in reduction of nitrogen from aquaculture center wastewater as much as 75%. Conclusion: The results showed that the species can reduce organic substances in the wastewater of aquaculture center and their discharge into the environment.

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Section: Algae Culturementioning

confidence: 99%

“…Under standard conditions, the optimal salinity for growth was maintained at 10 parts per thousand. 19,20 Seawater with a salinity of 12 parts per thousand was used as a base solution for the culture of this microalgae. Sea salt was then added to achieve the required concentration.…”

Section: Algae Culturementioning

confidence: 99%

Investigating the Growth Rate of Tetraselmis Algae and its Effect on Nitrogen Removal From Aquaculture Wastewater

Ghadamzadeh,

Jalilzadeh Yengejeh,

Javadzadeh

et al. 2024

Journal of Advances in Environmental Health Research

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“…Microalgae have much higher biomass productivity compared to terrestrial plants [142], with a high capacity for the removal of heavy metals, ions, pesticides, pharmaceuticals, and other harmful contaminants. Different methods are used by microalgae to remove contaminants, such as adsorption, accumulation, and immobilization, followed by intracellular conversion to valuable products [143,144]. In WWTPs, there is a useful symbiotic interaction between microalgae and bacteria for pollutant removal.…”

Section: Microalgae-mnp Interactionmentioning

confidence: 99%

Recent Advances in Micro-/Nanoplastic (MNPs) Removal by Microalgae and Possible Integrated Routes of Energy Recovery

Abomohra

Hanelt

2022

Microorganisms

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Reliance on plastic has resulted in the widespread occurrence of micro-/nanoplastics (MNPs) in aquatic ecosystems, threatening the food web and whole ecosystem functions. There is a tight interaction between MNPs and microalgae, as dominant living organisms and fundamental constituents at the base of the aquatic food web. Therefore, it is crucial to better understand the mechanisms underlying the interactions between plastic particles and microalgae, as well as the role of microalgae in removing MNPs from aquatic ecosystems. In addition, finding a suitable route for further utilization of MNP-contaminated algal biomass is of great importance. The present review article provides an interdisciplinary approach to elucidate microalgae–MNP interactions and subsequent impacts on microalgal physiology. The degradation of plastic in the environment and differences between micro- and nanoplastics are discussed. The possible toxic effects of MNPs on microalgal growth, photosynthetic activity, and morphology, due to physical or chemical interactions, are evaluated. In addition, the potential role of MNPs in microalgae cultivation and/or harvesting, together with further safe routes for biomass utilization in biofuel production, are suggested. Overall, the current article represents a state-of-the-art overview of MNP generation and the consequences of their accumulation in the environment, providing new insights into microalgae integrated routes of plastic removal and bioenergy production.

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“…DAZ is a neurotoxic organophosphorus insecticide inhibiting the acetylcholinesterase activity, and ATR is an herbicide hindering the photosynthetic electron transport and the growth of plants [ 4 , 5 , 6 ]. Any attempt to preserve the freshwater quality unavoidably would induce the degradation of these pesticides into derivatives exhibiting chemical and toxicological properties [ 7 , 8 ]. The latter needs to be investigated for water remediation technologies and toxicity risk assessment.…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicity of Diazinon and Atrazine Mixtures after Ozonation Catalyzed by Na+ and Fe2+ Exchanged Montmorillonites on Lemna minor

Benghaffour,

Azzouz,

Dewez

2023

Molecules

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The toxicity of two pesticides, diazinon (DAZ) and atrazine (ATR), before and after montmorillonite-catalyzed ozonation was comparatively investigated on the duckweed Lemna minor. The results allowed demonstrating the role of clay-containing media in the evolution in time of pesticide negative impact on L. minor plants. Pesticides conversion exceeded 94% after 30 min of ozonation in the presence of both Na+ and Fe2+ exchanged montmorillonites. Toxicity testing using L. minor permitted us to evaluate the change in pesticide ecotoxicity. The plant growth inhibition involved excessive oxidative stress depending on the pesticide concentration, molecular structure, and degradation degree. Pesticide adsorption and/or conversion by ozonation on clay surfaces significantly reduced the toxicity towards L. minor plants, more particularly in the presence of Fe(II)-exchanged montmorillonite. The results showed a strong correlation between the pesticide toxicity towards L. minor and the level of reactive oxygen species, which was found to depend on the catalytic activity of the clay minerals, pesticide exposure time to ozone, and formation of harmful derivatives. These findings open promising prospects for developing a method to monitor pesticide ecotoxicity according to clay-containing host-media and exposure time to ambient factors.

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Removal of atrazine in catalytic degradation solutions by microalgae Chlorella sp. and evaluation of toxicity of degradation products via algal growth and photosynthetic activity

Cited by 53 publications

References 38 publications

Investigating the Growth Rate of Tetraselmis Algae and its Effect on Nitrogen Removal From Aquaculture Wastewater

Investigating the Growth Rate of Tetraselmis Algae and its Effect on Nitrogen Removal From Aquaculture Wastewater

Recent Advances in Micro-/Nanoplastic (MNPs) Removal by Microalgae and Possible Integrated Routes of Energy Recovery

Ecotoxicity of Diazinon and Atrazine Mixtures after Ozonation Catalyzed by Na+ and Fe2+ Exchanged Montmorillonites on Lemna minor

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