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ItalianoMicrobial degradation is the main responsible for polycyclic aromatic hydrocarbons (PAHs) removal from contaminated soils, and the understanding of this process is pivotal to define effective bioremediation approaches. To evaluate the contribution of several microbial groups in soil anthracene and benzo[a]pyrene degradation, the analysis of phospholipid fatty acid (PLFA) profiles and machine learning techniques were employed. To this end, PLFAs and PAH concentrations were analysed, along 274 days of incubation in mesocosms, in soils artificially contaminated with anthracene and benzo[a]pyrene, subjected to different treatments: untreated soil and soils treated with biowaste compost or fungal consortium. Random forest models, figuring anthracene or benzo[a]pyrene concentrations as dependent variables and PLFAs as predictors, were then built to evaluate the contribution of each variable in PAH degradation. PLFA profiles varied substantially among soil treatments and along time, with the increase of Actinomycetes in soils added with fungi and other Gramþ bacteria in compost amended soils. The former, together with fungi, are primarily responsible for anthracene and benzo[a]pyrene degradation in both treated soils, a process in which also metanotrophs and other Gramþ and Gram- bacteria participate. In untreated soil, the cooperation of a multitude of different microorganisms was, instead, responsible for PAH removal, a process with lower efficiency in respect to treated soils.
| Citation: | Bellino, A.; Baldantoni, D.; Picariello, E.; Morelli, R.; Alfani, A.; De Nicola, F. (2019). Role of different microorganisms in remediating PAH-contaminated soils treated with compost or fungi. JOURNAL OF ENVIRONMENTAL MANAGEMENT, 252: 109675. doi: 10.1016/j.jenvman.2019.109675 handle: http://hdl.handle.net/10449/59432 |
| Internal authors: | |
| Organization unit: | Experiment and Technological Services Department # CTT (2012- ) |
| Authors: | Bellino, A.; Baldantoni, D.; Picariello, E.; Morelli, R.; Alfani, A.; De Nicola, F. |
| Title: | Role of different microorganisms in remediating PAH-contaminated soils treated with compost or fungi |
| Journal: | JOURNAL OF ENVIRONMENTAL MANAGEMENT |
| Issue Date: | 2019 |
| Scientific Disciplinary Area: | Settore BIO/07 - Ecologia |
| Keywords ENG: | Anthracene Benzo[a]pyrene PLFA Biowaste compost Fungal consortium Random forest |
| Language: | English |
| IF: | With Impact Factor ISI |
| Publication status: | Published |
| Nature of content: | Articolo in rivista/Article |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.jenvman.2019.109675 |
| Appears in Collections: | 01 - Journal article |
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