NDLI: Evaluation of different bioremediation protocols to enhance decomposition of organic polymers in harbour sediments

Content Provider	Springer Nature Link
Author	Gallizia, Ilaria Vezzulli, Luigi Fabia, Mauro
Copyright Year	2005
Abstract	The response of the microbial community (in term of abundance and enzymatic activity) was investigated to test the effect of different bioremediation protocols to naturally enhance decomposition of organic polymers in harbour sediments (Genoa Harbour, Italy, N–W Mediterranean). Bioremediation techniques tested were bioaugmentation (5 different microorganisms’ inocula), biostimulation (air supply), and natural attenuation. The coupling bioaugmentation/biostimulation was also tested. After 60days, following the bioaugmentation protocol, bacterial densities correlated to the quantities of inocula amended to the boxes, suggesting that allochthonous community was able to survive and multiply. However, while bioaugmentation alone seems not to be able to carry out significative degradation, its coupling with air insufflations produced the best response: here bacterial densities increased, especially in the water (from 2.3×107 to 3.50×108cells ml−1), average cell size and enzymatic activities increased, and sedimentary organic matter was significantly depleted (PRT 5-folds reduction, CHO 1.5-folds reduction). The strong coupling observed between the sediment and water compartments together with the greatest microbial response observed in this latter suggest that the sediment–water interface may constitute a key compartment for the occurring of biodegradation processes in organic-rich sediments.
Starting Page	569
Ending Page	579
Page Count	11
File Format	PDF
ISSN	09239820
Journal	Biodegradation
Volume Number	16
Issue Number	6
e-ISSN	15729729
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	bacteria bioremediation enzymatic activity harbour organic matter sediment Geochemistry Soil Science & Conservation Terrestrial Pollution Waste Management/Waste Technology Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Environmental Engineering Bioengineering Microbiology

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