High bacterial biodiversity increases degradation performance of hydrocarbons during bioremediation of contaminated harbor marine sediments

Dell’Anno, Antonio; Beolchini, Francesca; Rocchetti, Laura; Luna, Gian Marco; Danovaro, Roberto

doi:10.1016/j.envpol.2012.03.043

Cited by 109 publications

(46 citation statements)

References 73 publications

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“…The procedures were performed in triplicate as previously described (Cui et al, 2008). Grain sizes of the sediments were measured by sieving techniques (Dell'Anno et al, 2012).…”

Section: Quantification Of Total Petroleum Hydrocarbons In the Sedimentsmentioning

confidence: 99%

Biodiversity and degradation potential of oil-degrading bacteria isolated from deep-sea sediments of South Mid-Atlantic Ridge

Gao

Cui

et al. 2015

Marine Pollution Bulletin

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“…The procedures were performed in triplicate as previously described (Cui et al, 2008). Grain sizes of the sediments were measured by sieving techniques (Dell'Anno et al, 2012).…”

Section: Quantification Of Total Petroleum Hydrocarbons In the Sedimentsmentioning

confidence: 99%

Biodiversity and degradation potential of oil-degrading bacteria isolated from deep-sea sediments of South Mid-Atlantic Ridge

Gao

Cui

et al. 2015

Marine Pollution Bulletin

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“…Other bioremediation experiments were carried out in aerobic (biostimulation with inorganic nutrients) and anaerobic conditions [15]. Biostimulation experiments with inorganic nutrients were carried out in aerobic conditions to degrade hydrocarbons, and also a two-step anaerobic-aerobic experiment was carried out [16].…”

Section: Methodsmentioning

confidence: 99%

“…Also the presence of inorganic nutrients during biostimulation actions appears to increase the biodegradation of hydrocarbons [16][17]. Relationships between hydrocarbon degradation and bacterial OTU richness (operational taxonomic unit, A) and evenness (B; Dell'Anno et al [15]). …”

Section: Sediments Contaminated With Hydrocarbons and Metalsmentioning

confidence: 99%

“…4). Prevision of the temporal changes of prokaryotic abundances (A) and hydrocarbon concentrations (B) [15].…”

Section: Sediments Contaminated With Hydrocarbons and Metalsmentioning

confidence: 99%

“…A study aimed at investigating the relationships between bacterial biodiversity and hydrocarbon degradation in marine contaminated sediments and with different redox conditions has provided additional elements in view of treatments aimed at hydrocarbon biodegradation [15]). The hydrocarbons were degraded both in aerobic (about 65%) and anaerobic conditions (about 80%) and the efficiency of their degradation was found to be related in a positive way with bacterial diversity, in both the redox conditions (Fig.…”

Section: Sediments Contaminated With Hydrocarbons and Metalsmentioning

confidence: 99%

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Bioremediation of contaminated marine sediments: examples of successful applications

Rocchetti¹,

Fonti²,

Beolchini³

et al. 2014

WIT Transactions on Ecology and the Environment

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Harbor sediments are often characterized by the presence of inorganic and organic contaminants, and this fact represents a relevant problem both when sediments are dredged and when they are left in the sea bottom. In this study we present the main results achieved by our research group in laboratory experiments addressed to marine sediment bioremediation. Dealing with sediments mainly contaminated with metals, several bioremediation strategies for metal biomobilization and biostabilization were tested. When the aim was to mobilize the metals from the sediments, Fe-reducing bacteria and the Fe/S oxidizing bacteria were used, and high extraction yields were obtained (> 90% for Cu, Cd, Hg and Zn). Other experiments with the same purpose where carried out with sediments and Fe 2+ to stimulate a mix of allochthonous acidophilic autotrophic and heterotrophic bacteria: Ni and Zn mobilization was enhanced (up to > 40%), while other metals were more stable. The situation is more complex when sediments present a mixed contamination of hydrocarbons and metals. The experiments were based on the use of sulfate reducing bacteria and acetate under anaerobic conditions to stimulate hydrocarbon biodegradation. Although high hydrocarbon degradation were achieved (> 40%), metals could be mobilized. Other treatments under anaerobic conditions with acetate and lactose lead to high hydrocarbon degradation (up to 80%) and metal stabilization (Cu and Zn). In sediment mainly contaminated with aliphatic and polycyclic aromatic hydrocarbons we tested the effect of a supply of inorganic nutrients and sand on hydrocarbon degradation (> 70% for aliphatic hydrocarbons and 40% for the aromatics). A semi-empirical kinetic model was fitted to the temporal changes of hydrocarbon concentrations to predict their degradation. Overall our data are of support for the improvement of the efficiency of bioremediation treatments.

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Introduction to Organic Contaminants in Soil: Concepts and Risks

Valentín

Nousiainen

Mikkonen

2013

The Handbook of Environmental Chemistry

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High bacterial biodiversity increases degradation performance of hydrocarbons during bioremediation of contaminated harbor marine sediments

Cited by 109 publications

References 73 publications

Biodiversity and degradation potential of oil-degrading bacteria isolated from deep-sea sediments of South Mid-Atlantic Ridge

Biodiversity and degradation potential of oil-degrading bacteria isolated from deep-sea sediments of South Mid-Atlantic Ridge

Bioremediation of contaminated marine sediments: examples of successful applications

Introduction to Organic Contaminants in Soil: Concepts and Risks

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