Hydrocarbons removal from real marine sediments: Analysis of degradation pathways and microbial community development during bioslurry treatment

Avona, Alessia; Capodici, Marco; Trapani, Daniele Di; Giustra, Maria Gabriella; Lucchina, Pietro Greco; Lumia, Lucia; Bella, Gaetano Di; Rossetti, Simona; Tonanzi, Barbara; Viviani, Gaspare

doi:10.1016/j.scitotenv.2022.156458

Cited by 15 publications

(5 citation statements)

References 54 publications

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“…APAT method (APAT, 2004) was employed to conduct phytotoxicity tests, which involved seed germination and root elongation . Lepidium sativum seeds were used for germination and growth assays on sand aqueous solutions and placed in Petri dishes (90 mm diameter) with one sheet of filter paper as support (Avona et al, 2022). A negative control, not containing substances that could inhibit germination and root elongation, and various dilutions with soil were prepared for each sample to be tested: in particular, sample-soil concentrations of 25%, 50% and 100% were used, for a total of 10 g of dry mass for each aliquot.…”

Section: Methodsmentioning

confidence: 99%

Surfactant-enhanced mobilization of hydrocarbons from soil: Comparison between anionic and nonionic surfactants in terms of remediation efficiency and residual phytotoxicity

Di Trapani,

De Marines,

Greco Lucchina

et al. 2023

Process Safety and Environmental Protection

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Section: Methodsmentioning

confidence: 99%

Surfactant-enhanced mobilization of hydrocarbons from soil: Comparison between anionic and nonionic surfactants in terms of remediation efficiency and residual phytotoxicity

Di Trapani,

De Marines,

Greco Lucchina

et al. 2023

Process Safety and Environmental Protection

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“…В составе микробного сообщества донных отложений с наибольшим уровнем нефтезагрязнения в значительной мере представлен филум Actinobacteria (6,7%), а доля филума Chloroflexi (0,3%) ниже, чем в остальных сообществах. Доминирующая позиция филума Proteobacteria во всех исследованных сообществах может быть обусловлена рядом факторов: протеобактерии являются типичными представителями речных экосистем; представители данного филума играют важную роль в трансформации органических соединений; среди протеобактерий описано значительное количество штаммов, осуществляющих трансформацию углеводородов нефти [4,7,11,18].…”

Section: результаты и обсуждениеunclassified

“…Точка отбора Доминирующий филум Proteobacteria во всех исследованных сообществах представлен двумя классами: Alphaproteobacteria и Gammaproteobacteria (таблица). Известно, что представители класса Gammaproteobacteria широко распространены в биоценозах, испытывающих негативную нефтяную нагрузку [7,11,18]. Доминирующую позицию среди представителей данного класса занимает род Hydrogenophaga (таблица) на долю которого приходится 0,4-2,0% ASV в сообществах донных отложений реки Каменка.…”

Section: таксономическая единицаunclassified

“…Доминирующую позицию среди представителей данного класса занимает род Hydrogenophaga (таблица) на долю которого приходится 0,4-2,0% ASV в сообществах донных отложений реки Каменка. Ранее представители рода Hydrogenophaga были описаны в составе микробных сообществ, выделенных из нефтезагрязненных осадков морей [7]. Интересно отметить, что представители рода Pseudomonas, к которому принадлежит значительное количество описанных штаммов-нефтедеструкторов, выявлены только в составе микробного сообщества донных отложений точки V-00-1 (0,1%), характеризующейся высокой концентрацией нефтяных углеводородов [26].…”

Section: таксономическая единицаunclassified

“…Основными компонентами нефти являются линейные и разветвленные углеводороды, ароматические углеводороды, нафтены и ряд других органических соединений [4]. Поступление данных веществ в почву и донные отложения приводит к нарушению их структуры и функций, а также оказывает влияние на микробиоценоз [4][5][6][7].…”

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Composition of Bacterial Communities in Oil-Contaminated Bottom Sediments of the Kamenka River

Егорова

Sannikov

Khotyanovskaya

et al. 2023

Vestn. Mosk. Univ. Ser. 16. Biol.

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The Kamenka River ows through the territory of the Kokuyskoye gas and oil eld located in the Perm Territory. Despite the absence of oil-producing facilities in the immediate vicinity of the river, oil hydrocarbons were found in the waters and bottom sediments at a concentration of 2445-25800 mg/kg. The composition of microbial communities of bottom sediments of the Kamenka River, located at the source and along the river, was studied. Using the methods of high-performance sequencing and bioinformatic data processing, it was established that the main share of microbial communities is represented by bacteria of the phylum Proteobacteria (16.7-30.3%), as well as the phyla Actinobacteriota, Bacteroidota, Bdellovibrionota, Campilobacterota, Chloro exi, Cyanobacteria, Deferribacterota, Desulfobacterota, Firmicutes, Gemmatimonadota, Methylomirabilota, Myxococcota, Nitrospirota, Patescibacteria, Planctomycetota, Spirochaetota, Synergistota, Thermotofota and Verrucomicrobiota. The values of the Shannon index for the studied communities are directly correlated with the concentration of petroleum hydrocarbons in bottom sediments. The phylum Proteobacteria in communities is represented by the classes Alphaproteobacteria and Gammaproteobacteria, among which representatives of the families Rhodobacteriaceae and Comamonadaceae dominate. When identifying to the genus, it was found that in the Comamonadaceae family, the main share is made up of bacteria of the genus Hydrogenophaga. It should be noted that bacteria of the genus Pseudomonas (class Gammaproteobacteria) were found only in the microbiocenosis of bottom sediments, characterized by the highest concentration of petroleum hydrocarbons.

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Asynchronous application of modified biochar and exogenous fungus Scedosporium sp. ZYY for enhanced degradation of oil-contaminated intertidal mudflat sediment

Atakpa,

Yan,

Okon

et al. 2024

Environ Sci Pollut Res

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Bioremediation strategies for oil-contaminated clayey sediment are still a major environmental concern due to their reluctance to conventional treatment techniques. The main objective of this study was to evaluate the sequential application of modi ed biochar and exogenous fungus in slurry phase degradation of crude oil-contaminated clayey sediment. Biochar modi cation using acid and rhamnolipid increased its surface area from 2.544 to 25.378 m 2 g -1 , followed by a corresponding increase in the hydrogen-carbon and oxygen-carbon ratio, indicating improved stability, polarity, and oxygen contents. The maximum TPH removal e ciency of 82.4% was achieved in treatments with the acid-rhamnolipidtreated biochar, followed by a corresponding increase in FDA hydrolysis activity. Furthermore, highthroughput 16S RNA gene sequencing was employed to identify changes in the bacterial community structures of the original sediment and treatments before and after fungal inoculation. This highlighted Proteobacteria as the dominant phylum, followed by Campilobacterota, Bacteroidota, Actinobacteriota, and Desulfobacterota. In addition, it was observed that fungal inoculation promoted the proliferation of some speci c TPH-degraders. Speci cally, ASVs associated with Hyphomonas adhaerens and Marinobacter mobilis accounted for 77% and 5% of the total degrading populations in treatments where TPH removal was highest. Findings in this study provide valuable insights into the effect of biochar in the treatment of crude oil-contaminated marine sediments, and a better understanding of the fundamental role of exogenous fungus in the proliferation of e cient TPH-degraders towards effective degradation. HighlightsAcid-treated biochar accelerated degradation rate within the rst 21 days Taxonomic groups originally present in low abundance improved predominantly after fungal addition.Fungi promoted the abundance of pollutant-degrading bacterial species while impeding the abundance of non-degraders.Overall degradation process impeded bacterial diversity.

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Hydrocarbons removal from real marine sediments: Analysis of degradation pathways and microbial community development during bioslurry treatment

Cited by 15 publications

References 54 publications

Surfactant-enhanced mobilization of hydrocarbons from soil: Comparison between anionic and nonionic surfactants in terms of remediation efficiency and residual phytotoxicity

Surfactant-enhanced mobilization of hydrocarbons from soil: Comparison between anionic and nonionic surfactants in terms of remediation efficiency and residual phytotoxicity

Composition of Bacterial Communities in Oil-Contaminated Bottom Sediments of the Kamenka River

Asynchronous application of modified biochar and exogenous fungus Scedosporium sp. ZYY for enhanced degradation of oil-contaminated intertidal mudflat sediment

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