The bioaccumulation of phthalates was studied in fragments of Ulva lactuca exposed for a maximum of 31 days at different concentrations of a solution of six phthalic acid esters (PAEs). The algal matrix showed rapid uptake since the first sampling, which increased over the time of the experimental period, at the end of which seaweed’s bioaccumulation potential was also evaluated. After the uptake, the algal matrix was subjected to UV irradiation in order to verify the removal of the phthalates. PAEs with higher octanol–water partition coefficients (logKow) and molecular weights were preferentially uptaken by U. lactuca in all the exposure experiments. It was observed that both accumulation (biota-sediment accumulation factor (log10BSAF) ranging from 3.75 to 4.02) and photodegradation (higher than 70% removal for all phthalates in 8 h) are more efficient at lower concentration levels. These results suggest the potential use of the algal matrices for environmental bioremediation, in order to mitigate the impact of pollution from ubiquitous pollutants such as PAEs.

Dario Savoca, A.M. (2023). UPTAKE AND PHOTOINDUCED DEGRADATION OF PHTHALIC ACID ESTERS (PAES) IN ULVA LACTUCA HIGHLIGHT ITS POTENTIAL APPLICATION IN ENVIRONMENTAL BIOREMEDIATION. In LIBRO DEGLI ABSTRACT.

UPTAKE AND PHOTOINDUCED DEGRADATION OF PHTHALIC ACID ESTERS (PAES) IN ULVA LACTUCA HIGHLIGHT ITS POTENTIAL APPLICATION IN ENVIRONMENTAL BIOREMEDIATION

Dario Savoca
Primo
;
Antonella Maccotta;Santino Orecchio
2023-01-01

Abstract

The bioaccumulation of phthalates was studied in fragments of Ulva lactuca exposed for a maximum of 31 days at different concentrations of a solution of six phthalic acid esters (PAEs). The algal matrix showed rapid uptake since the first sampling, which increased over the time of the experimental period, at the end of which seaweed’s bioaccumulation potential was also evaluated. After the uptake, the algal matrix was subjected to UV irradiation in order to verify the removal of the phthalates. PAEs with higher octanol–water partition coefficients (logKow) and molecular weights were preferentially uptaken by U. lactuca in all the exposure experiments. It was observed that both accumulation (biota-sediment accumulation factor (log10BSAF) ranging from 3.75 to 4.02) and photodegradation (higher than 70% removal for all phthalates in 8 h) are more efficient at lower concentration levels. These results suggest the potential use of the algal matrices for environmental bioremediation, in order to mitigate the impact of pollution from ubiquitous pollutants such as PAEs.
2023
Persistent organic pollutant (POP)
Seaweed
Algae
Bioaccumulation
Photodegradation
UV radiation
Risk assessment
Plastic additives
9788894952391
Dario Savoca, A.M. (2023). UPTAKE AND PHOTOINDUCED DEGRADATION OF PHTHALIC ACID ESTERS (PAES) IN ULVA LACTUCA HIGHLIGHT ITS POTENTIAL APPLICATION IN ENVIRONMENTAL BIOREMEDIATION. In LIBRO DEGLI ABSTRACT.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/619503
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