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

被引：15

作者：

Avona, A. ^{[1
]}

Capodici, M. ^{[1
]}

Di Trapani, D. ^{[1
]}

Giustra, M. G. ^{[2
]}

Lucchina, P. Greco ^{[1
]}

Lumia, L. ^{[2
]}

Di Bella, G. ^{[2
]}

Rossetti, S. ^{[3
]}

Tonanzi, B. ^{[3
]}

Viviani, G. ^{[1
]}

机构：

[1] Univ Palermo, Dipartimento Ingn, Viale Sci ed8, I-90128 Palermo, Italy

[2] Cittadella Univ, Univ Kore Enna, Fac Ingn & Architettura, I-94100 Enna, Italy

[3] Consiglio Nazl Ric CNR, Ist Ric Acque IRSA, Via Salaria km 29-300,Monterotondo, I-00015 Rome, Italy

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2022年 / 838卷

关键词：

Microbial community; Hydrocarbon pollution; Bioremediation; Contaminated marine sediment; Slurry reactor; ACINETOBACTER-CALCOACETICUS BU03; TOTAL PETROLEUM-HYDROCARBONS; CONTAMINATED SOIL; CRUDE-OIL; BIOREMEDIATION; BIODEGRADATION; REMEDIATION; SLUDGE; PHENANTHRENE; ENRICHMENT;

D O I：

10.1016/j.scitotenv.2022.156458

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, real marine sediments polluted by petroleum compounds were treated by means of a bioslurry pilot scale reactor. The treatment performance was evaluated by measuring the removal of total petroleum hydrocarbon (TPH), coupled to further analyses required to understand the mechanisms involved in the biodegradation process. The maximum TPH-removal efficiency reached 86 % at the end of experiments. Moreover, high throughput 16S RNA gene sequencing was used to describe the microbiome composition in sediment prior to, and after, bioslurry treatment, in order to identify the taxa mostly entailed in the TPH removal process. The raw sediment was mostly colonized by members of Sulfurimonas genus; after bioslurry treatment, it was noticed a shift in the microbial community composition, with Proteobacteria phylum dominating the remediation environment (high increase in terms of growth for Hydrogenophaga and Sphingorhabdus genera) along with the Phaeodactylibacter genus (Bacteroidetes). Furthermore, the assessment of gaseous emissions from the system allowed to quantify the volatile hydrocarbon component and, consequently, to obtain a more accurate evaluation of TPH-removal pathway by the bioslurry system. Finally, phytotoxicity tests on sediment samples highlighted an increase of the treated sample quality status compared to the untreated one.

引用

页数：9

共 60 条

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