Heavy Metals in Macrozoobenthos and Sediments of the Coastal Zone of the Eastern Gulf of Finland

Levit, R. L.; Shigaeva, T. D.; Kudryavtseva, V. A.

doi:10.1134/s1070363220130265

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…The fundamental roots of Cr accumulation in worms were across epidermal uptake and ingested sludge with Cr through worm feeding(Hu et al 2016). Zhang et al (2012) showed that Cu and Zn were found to be bioaccumulated more rapidly within the rst 12 days and then tended to slow down, but for Pb, the concentration in worms rose slowly over the entire exposure time Levit et al (2020). suggested that benthic macroinvertebrates more actively accumulate Mn, Fe, and Zn than Pb, Cu, and Cd.…”

mentioning

confidence: 99%

Interaction between Cr(VI) and Tubificidae in sludge reduction system: effect, reduction, and redistribution of Cr(VI)

Lou

Jin

et al. 2023

Environ Sci Pollut Res

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The treatment of heavy metals in sewage treatment systems has gained more attention with the increase in heavy metal hazards. Tubi cidae in sludge reduction has been widely studied; however, little is known about the effect of Tubi cidae in the treatment of Cr-containing wastewater. In this study, the mechanism of worms in the sludge reduction system with Cr stress was studied. Predation experiments by worms in a Cr-containing sludge reduction system were conducted to investigate the changes in enzyme activities in the worms under different concentrations of Cr, and the distribution of Cr in the worm sludge reduction reactor was analyzed. The kinetic model of uptake and elimination of Cr in worms was established. The results of SOD, POD and CAT activities indicated that worms had a certain detoxi cation effect on Cr( ).After 28 days of worm predation experiments, the Cr concentrations in worms, sludge and worm feces increased rst and then decreased with exposure time, and the proportion of total Cr and Cr( ) in the sludge decreased from 71.98% and 42.7-29.18% and 6.82%, respectively. The detoxi cation mechanism of the worms could be activated with Cr stress, and 63.22% of the Cr(VI) was converted into Cr(III) by the worms. It can be seen that Tubi cidae could be considered a good scavenger of environmental Cr( ). The hyperbolic model ts the process of Cr uptake and elimination well and can be used as a predictive tool for worm accumulation.

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confidence: 99%

Interaction between Cr(VI) and Tubificidae in sludge reduction system: effect, reduction, and redistribution of Cr(VI)

Lou

Jin

et al. 2023

Environ Sci Pollut Res

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Thiophilicity is a determinant of bioaccumulation in benthic fauna

O’Callaghan

Fitzpatrick

Sullivan

2022

Environmental Pollution

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The mechanism of Tubificidae in a sludge reduction system with Cr(Ⅵ) stress: an environmentally friendly scavenger

Lou

Jin

et al. 2022

Preprint

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The treatment of heavy metals in sewage treatment systems has gained more attention with the increase in heavy metal hazards. Tubificidae in sludge reduction has been widely studied; however, little is known about the effect of Tubificidae in the treatment of Cr-containing wastewater. In this study, the mechanism of worms in the sludge reduction system with Cr stress was studied. Predation experiments by worms in a Cr-containing sludge reduction system were conducted to investigate the changes in enzyme activities in the worms under different concentrations of Cr, and the distribution of Cr in the worm sludge reduction reactor was analyzed. The kinetic model of uptake and elimination of Cr in worms was established. The results of SOD, POD and CAT activities indicated that worms had a certain detoxification effect on Cr(Ⅵ). After 28 days of worm predation experiments, the Cr concentrations in worms, sludge and worm feces increased first and then decreased with exposure time, and the proportion of total Cr and Cr(Ⅵ) in the sludge decreased from 71.98% and 42.7–29.18% and 6.82%, respectively. The detoxification mechanism of the worms could be activated with Cr stress, and 63.22% of the Cr(VI) was converted into Cr(III) by the worms. It can be seen that Tubificidae could be considered a good scavenger of environmental Cr(Ⅵ). The hyperbolic model fits the process of Cr uptake and elimination well and can be used as a predictive tool for worm accumulation.

show abstract

Heavy Metals in Macrozoobenthos and Sediments of the Coastal Zone of the Eastern Gulf of Finland

Cited by 5 publications

References 22 publications

Interaction between Cr(VI) and Tubificidae in sludge reduction system: effect, reduction, and redistribution of Cr(VI)

Interaction between Cr(VI) and Tubificidae in sludge reduction system: effect, reduction, and redistribution of Cr(VI)

Thiophilicity is a determinant of bioaccumulation in benthic fauna

The mechanism of Tubificidae in a sludge reduction system with Cr(Ⅵ) stress: an environmentally friendly scavenger

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