TY - JOUR
T1 - Effects of Apirolio Addition and Alfalfa and Compost Treatments on the Natural Microbial Community of a Historically PCB-Contaminated Soil
AU - Laudicina, Vito Armando
AU - Grenni, Paola
AU - Ancona, Valeria
AU - Di Lenola, Martina
AU - Rauseo, Jasmin
AU - Uricchio, Vito Felice
AU - Barra Caracciolo, Anna
AU - Massacci, Angelo
PY - 2018
Y1 - 2018
N2 - Polychlorinated biphenyls (PCBs) are ubiquitous and persistent organic pollutants generated exclusively from human sources and found in the environment as several congeners (e.g. Apirolio, produced in Italy and used for electrical transformers). To evaluate the ability of the natural microbial community of historically PCB-contaminated soil to transform or degrade PCBs after fresh contamination through the addition of Apirolio, a microcosm experiment was conducted in a greenhouse for approximately 8 months. Compost and Medicago sativa (alfalfa) were additionally used in the microcosms to stimulate microbial PCB degradation. Chemical analyses were performed to evaluate PCB concentrations in the soil and plant tissue. Changes in the microbial community under the different experimental conditions were evaluated in terms of total abundance, viability, diversity, and activity. Interestingly, the addition of Apirolio did not negatively affect the microbial community but did stimulate the degradation of the freshly added PCBs. The plant and compost co-presence did not substantially increase PCB degradation, but it increased the microbial abundance and activity and the occurrence of α-Proteobacteria and fungi.
AB - Polychlorinated biphenyls (PCBs) are ubiquitous and persistent organic pollutants generated exclusively from human sources and found in the environment as several congeners (e.g. Apirolio, produced in Italy and used for electrical transformers). To evaluate the ability of the natural microbial community of historically PCB-contaminated soil to transform or degrade PCBs after fresh contamination through the addition of Apirolio, a microcosm experiment was conducted in a greenhouse for approximately 8 months. Compost and Medicago sativa (alfalfa) were additionally used in the microcosms to stimulate microbial PCB degradation. Chemical analyses were performed to evaluate PCB concentrations in the soil and plant tissue. Changes in the microbial community under the different experimental conditions were evaluated in terms of total abundance, viability, diversity, and activity. Interestingly, the addition of Apirolio did not negatively affect the microbial community but did stimulate the degradation of the freshly added PCBs. The plant and compost co-presence did not substantially increase PCB degradation, but it increased the microbial abundance and activity and the occurrence of α-Proteobacteria and fungi.
KW - Apirolio
KW - Dehydrogenase activity
KW - Ecological Modeling
KW - Environmental Chemistry
KW - Environmental Engineering
KW - Fungi
KW - PCB congeners
KW - Pollution
KW - Proteobacteria
KW - Soil quality
KW - Water Science and Technology
KW - Apirolio
KW - Dehydrogenase activity
KW - Ecological Modeling
KW - Environmental Chemistry
KW - Environmental Engineering
KW - Fungi
KW - PCB congeners
KW - Pollution
KW - Proteobacteria
KW - Soil quality
KW - Water Science and Technology
UR - http://hdl.handle.net/10447/289680
UR - http://www.kluweronline.com/issn/0049-6979/
M3 - Article
VL - 229
JO - Water, Air, and Soil Pollution
JF - Water, Air, and Soil Pollution
SN - 0049-6979
ER -