Effects of yttrium and phosphorus on growth and physiological characteristics of Microcystis aeruginosa

Wang, Yingjun; Li, Yuanwei; Luo, X. G.; Ren, Yin'an; Gao, En'guang; Gao, Haojie

doi:10.1016/j.jre.2018.02.002

Cited by 24 publications

(6 citation statements)

References 24 publications

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“…The different values of t e (equilibrium time) obtained in this study are in accordance with the observations of Bai et al[28], Hou et al[29], Wang et al[30] and Zhang et al[31]. These authors noted that in studies of phosphorus retention on substrates on batch mode, t e is Table2.…”

supporting

confidence: 92%

Contribution to the Study of Phosphorus Adsorption Kinetics on the Superficial Sediments of a Recently Development Artificial Estuary: Vridi Channel (Côte d'Ivoire)

Samuel

Konan

Trokourey

2021

CSIJ

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The aim of this study is to characterize phosphates adsorption kinetics on the superficial sediments of Vridi channel from its new hydromorphology. So, three scenarios have been carried out taking account the different waters seasons of this estuary by using pH and temperature as relevant parameters. In the first scenario, the experiments carried out at pH = 8 and T = 20°C to simulate phosphates adsorption on these sediments in its great cold season. In the second, the experiments carried out at pH = 8 and T = 25° C to simulate phosphates adsorption on these substrates in its hot season and small cold season. In the third, the experiments carried out at pH = 7 and T = 30°C to simulate phosphates adsorption on these sediments in its flood season. The experiences were carried out according to US EPA/530/SW-87/006-F protocol. KH2PO4 solutions were used as phosphates synthetic solutions. The experimental data were modeling by Lagergeen kinetics model (pseudo-order 1), Blanchard kinetics model (pseudo-order 2), Elovich kinetics model, Weber and Morris kinetics model and, external diffusion kinetics model. The results have showed phosphates adsorption on these sediments increase in the experiments carried out at pH = 8 and T = 20°C to those carried out at pH = 7 and T = 30°C. All experimental data have been well modeling by Blanchard kinetics model. So, these phosphates adsorption kinetics are pseudo-order 2 and the chemisorption is the dominant mechanism. The results obtained by the experimental data modeling by Weber and Morris kinetics model and external diffusion kinetics model showed that this process is not limiting by the molecular diffusion process. The experimental data have been again well modeling by Elovich kinetics model. That has confirmed the chemisorption character of this adsorption, and showed this chemisorption is activated.

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supporting

confidence: 92%

Contribution to the Study of Phosphorus Adsorption Kinetics on the Superficial Sediments of a Recently Development Artificial Estuary: Vridi Channel (Côte d'Ivoire)

Samuel

Konan

Trokourey

2021

CSIJ

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“…Chl‐a is regarded as one of the main factors that dominate the growth status of algae (Wang et al, 2018). By comparing the maximum Chl‐a concentration in each group (Figure S1e), we observed that the Chl‐a concentration at 2500 lx was higher than that at 4500 lx and 7000 lx ( p < 0.01).…”

Section: Resultsmentioning

confidence: 99%

Effects of light and water disturbance on the growth of Microcystis aeruginosa and the release of algal toxins

Zhang

Lin

et al. 2021

Water Environment Research

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Eutrophication of water constitutes a serious threat to global water quality. Light intensity and water disturbance are important factors affecting the growth of algae and the release of algal toxins. In this study, algal growth indicators, algal enzyme systems, and algal toxin release in Microcystis aeruginosa under different light intensities and water disturbances were determined. The results showed that 2500 lx and 120 rpm were the optimal conditions for the growth of M. aeruginosa. The growth of algal cells was inhibited by high light intensity and high water disturbance. However, the optimal conditions for algal growth were not favorable conditions for the release of algal toxin. The highest concentration of microcystin‐LR (MC‐LR), observed at 4500 lx and 80 rpm, was 198.1 μg/L, whereas the highest single cell toxin production reached up to 10.49 × 10−9 μg/cell at 7000 lx and 120 rpm. Redundancy analysis results showed that the concentration of MC‐LR was positively correlated with algal cell density and antioxidant enzyme activities (superoxide dismutase, catalase, peroxidase, and malondialdehyde [MDA]) and negatively correlated with the total nitrogen and total phosphorus consumption rates and MDA. Single cell toxin production was negatively correlated with algal cell density and antioxidant enzyme activity but positively correlated with MDA content. Practitioner Points There was an optimal water disturbance condition for algae growth affected by the light intensity. Optimal conditions for algae cell growth are not necessarily the optimal conditions for algal toxin release. Enzyme indicators have correlation with the release of algae toxins and the growth of algae cells.

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“…The results depicted altered actions in the growth pattern of M. aeruginosa at low concentration (0.10-0.20 mg/L) of Y 3+ and partial/complete inhibition of their growth under high concentration (0.50-10.00 mg/L). A similar study performed by Wang et al [110], yttrium, and phosphorus, an essential nutrient element of algae M. aeruginosa was investigated. The results depicted an increase in chlorophyll a and soluble protein.…”

Section: Ecotoxicity Of Yttrium (Y)mentioning

confidence: 87%

An Updated Review of Toxicity Effect of the Rare Earth Elements (REEs) on Aquatic Organisms

Malhotra

Hsu

Liang

et al. 2020

Animals

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Rare earth elements (REEs) or “technology metals” were coined by the U.S. Department of Energy, a group of seventeen elements found in the Earth’s crust. These chemical elements are vital and irreplaceable to the world of technology owing to their unique physical, chemical, and light-emitting properties, all of which are beneficial in modern healthcare, telecommunication, and defense. Rare earth elements are relatively abundant in Earth’s crust, with critical qualities to the device performance. The reuse and recycling of rare earth elements through different technologies can minimize impacts on the environment; however, there is insufficient data about their biological, bioaccumulation, and health effects. The increasing usage of rare earth elements has raised concern about environmental toxicity, which may further cause harmful effects on human health. The study aims to review the toxicity analysis of these rare earth elements concerning aquatic biota, considering it to be the sensitive indicator of the environment. Based on the limited reports of REE effects, the review highlights the need for more detailed studies on the hormetic effects of REEs. Aquatic biota is a cheap, robust, and efficient platform to study REEs’ toxicity, mobility of REEs, and biomagnification in water bodies. REEs’ diverse effects on aquatic life forms have been observed due to the lack of safety limits and extensive use in the various sectors. In accordance with the available data, we have put in efforts to compile all the relevant research results in this paper related to the topic “toxicity effect of REEs on aquatic life”.

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Effects of yttrium and phosphorus on growth and physiological characteristics of Microcystis aeruginosa

Cited by 24 publications

References 24 publications

Contribution to the Study of Phosphorus Adsorption Kinetics on the Superficial Sediments of a Recently Development Artificial Estuary: Vridi Channel (Côte d'Ivoire)

Contribution to the Study of Phosphorus Adsorption Kinetics on the Superficial Sediments of a Recently Development Artificial Estuary: Vridi Channel (Côte d'Ivoire)

Effects of light and water disturbance on the growth of Microcystis aeruginosa and the release of algal toxins

An Updated Review of Toxicity Effect of the Rare Earth Elements (REEs) on Aquatic Organisms

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