Feasibility evaluation of contaminated lagoon sediment bioremediation with SS-SBR

Andrea Giordano, Luca Luccarini, Roberta Farina, Alessandro Spagni, Giuseppe Bortone

Research output: Contribution to conferencePaper

Abstract

The aim of this study is to evaluate the feasibility of the application of an aerobic sediment slurry-sequencing batch reactor (SS-SBR) for the treatment of polyciclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) contaminated lagoon sediment. In this work, the application of aerobic processes to SS-SBR technologies is investigated. In the study the Venice lagoon sediment samples were characterised for PAH, PCB and heavy metal contents. The sampled sediment were used for the preparation of several slurries. Respirometric experiments were carried out to evaluate the biological and chemical oxygen uptake rate. Moreover, PAHs and nine selected PCB congeners were measured during the respirometric tests. The sediment shows high chemical oxygen demand (approximately 50% of the total oxygen demand). The chemical oxygen uptake is particularly large at the initial phase. The chemical oxidation seems to be considerably faster than the biological reaction. Aerobic biodegradation seems to occur only for low-molecular-weight PAHs (two-three rings) whereas high molecular PAHs are not degraded during the duration of the experiments carried out in this study (five days). The nine PCB congeners measured in this research show an average disappearance of about 25 per cent.
Original languageEnglish
Publication statusPublished - 2002
Externally publishedYes
EventProceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds - , United States
Duration: 1 Jan 2002 → …

Conference

ConferenceProceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds
CountryUnited States
Period1/1/02 → …

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Giordano, A., Luccarini, L., Farina, R., Spagni, A., & Bortone, G. (2002). Feasibility evaluation of contaminated lagoon sediment bioremediation with SS-SBR. Paper presented at Proceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds, United States.