Super-complex mixtures of aliphatic- and aromatic acids may be common degradation products after marine oil spills: A lab-study of microbial oil degradation in a warm, pre-exposed marine environment

Kristensen, Mette; Johnsen, Anders R.; Christensen, Jan H.

doi:10.1016/j.envpol.2021.117264

Cited by 16 publications

(2 citation statements)

References 33 publications

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“…The detection of methylnaphthalene isomers (2-methylnaphthalene and 1-methylnaphthalene) in the seawater at FSR treatment at 26 °C (Table S2 ) demonstrates the bacterial degradation of the aromatic fraction of the oil. Methylnaphthalenes represent the rapidly dissolving oil hydrocarbons and the ratio of 2-methylnaphthalene over 1-methylnaphthalene (2-MN/1-MN) signifies the biodegradation of light aromatics (Gutierrez et al 2018 ; Kristensen et al 2021 ). The detection of these methylnaphthalene isomers in the FSR treatment at 26 °C (Table S2 ) and a 2-MN/1-MN ratio of 1.25 demonstrates the bacterial degradation of the aromatic fraction of the oil (Gutierrez et al 2018 ; Padrós et al 1999 ).…”

Section: Discussionmentioning

confidence: 99%

High temperature and solar radiation in the Red Sea enhance the dissolution of crude oil from surface films

Kottuparambil,

Ashok,

López

et al. 2024

Environ Sci Pollut Res

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The Red Sea is a hotspot of biodiversity susceptible to oil pollution. Besides, it is one of the warmest seas on the Earth with highly transparent waters. In this study, we estimated the oil dissolution rates under natural sunlight spectra and temperature conditions using coastal oil slicks collected after the 2019 Sabiti oil spill in the Red Sea. Optical analyses revealed the significant interactive effect of sunlight and temperature in enhancing the dissolution of oil into dissolved organic matter (DOM). The highest oil dissolution rate (38.68 g C m−3 d−1) was observed in full-spectrum sunlight. Oil dissolution significantly enhanced total organic carbon (TOC) and polycyclic aromatic hydrocarbons (PAHs) in seawater. High nucleic acid (HNA) bacteria, likely the oil degraders, proliferated from 30 to 70 – 90% after 4 days. The heavier stable carbon isotopic composition of methane (δ13C-CH4) and lighter stable carbon isotopic composition of carbon dioxide (δ13C-CO2) indicate the putative role of bacterial processes in the natural degradation of crude oil. The results indicated that the combined effect of temperature and solar radiation enhanced the biological and photochemical dissolution of oil on the Red Sea surface.

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Section: Discussionmentioning

confidence: 99%

High temperature and solar radiation in the Red Sea enhance the dissolution of crude oil from surface films

Kottuparambil,

Ashok,

López

et al. 2024

Environ Sci Pollut Res

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“…For example, phthalic acid in seawater is produced by the consumption of phthalic acid esters during bacterial growth, as described by laboratory studies 45 (Ren et al, 2021). Many studies have confirmed that aromatic acids cannot only be produced by biological processes, but also be considered as potential sources of oil spill, marine plastics, and sunscreen product discharges (Kristensen et al, 2021;Aitken et al, 2018). An important source of marine aromatic acid is the acidic degradation of spilled oil that occurs extensively in human-impacted areas including coastal oceans and harbors (Lu et al, 2021).…”

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confidence: 99%

Role of sea spray aerosol at the air-sea interface in transporting aromatic acids to the atmosphere

Song,

Li,

Tsona Tchinda

et al. 2023

Preprint

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Abstract. Aromatic acids are ubiquitous in seawater and can be transported to the atmosphere via sea spray aerosol (SSA). Despite their importance in affecting the global radiative balance, the contribution of marine aromatic acids and their transport mechanisms through SSA remain unclear. Herein, the distribution of particle size and number concentration of SSA produced in seawater containing nine different aromatic acids (i.e., benzoic acids, benzenedicarboxylic acids, hydroxybenzoic acids, vanillic acid, and syringic acid) was studied using a custom-made SSA simulation chamber; moreover, enrichment of aromatic acids in SSA and their emission flux to the atmosphere were analyzed. Transmission electron microscopy (TEM) images clearly revealed that aromatic acids can be transferred to the nascent SSA. Interestingly, the morphology associated with benzene dicarboxylic acids-coated particles showed that aromatic acids can promote the growth of other surfaces of sea salt, thus making the sea salt core spherical. Aromatic acids showed a significant enrichment behavior at the air-sea interface, which clearly indicated that SSA represent a source of aromatic acids in the atmosphere. Vanillic acid had the largest global emission flux through SSA (962 tons yr−1), even though its concentration in seawater was lower. The calculated results indicated that the global annual flux of aromatic acids was not only affected by the concentration in seawater, but also by their enrichment factor (EF). These data are critical for further quantifying the contribution of organic acids to the atmosphere via SSA, which may provide an estimate of the potential influence of the atmospheric feedbacks to the ocean carbon cycle.

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Synthesis of N-deficient g-C3N4/epoxy composite coating for enhanced photocatalytic corrosion resistance and water purification

Guo

Shi

et al. 2023

J Mater Sci

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Super-complex mixtures of aliphatic- and aromatic acids may be common degradation products after marine oil spills: A lab-study of microbial oil degradation in a warm, pre-exposed marine environment

Cited by 16 publications

References 33 publications

High temperature and solar radiation in the Red Sea enhance the dissolution of crude oil from surface films

High temperature and solar radiation in the Red Sea enhance the dissolution of crude oil from surface films

Role of sea spray aerosol at the air-sea interface in transporting aromatic acids to the atmosphere

Synthesis of N-deficient g-C3N4/epoxy composite coating for enhanced photocatalytic corrosion resistance and water purification

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