Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting

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Oil-based drilling cuttings comprise a large and hazardous waste stream generated by oil and gas wells drilling operations. Oil-based cuttings are muddy materials with high contents of salts and hydrocarbons. Composting strategies have shown to be effective in the biodegradation of petroleum hydroca...

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Autores principales: Paladino, Gabriela Lucía, Arrigoni, Juan Pablo, Satti, Patricia, Morelli, Irma Susana, Mora, Verónica C., Laos, F.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Química
Drilling wastes treatment
Hydrocarbons biodegradation
Oil-based drilling cuttings
Organic wastes
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127132
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127132
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Drilling wastes treatment
Hydrocarbons biodegradation
Oil-based drilling cuttings
Organic wastes
spellingShingle Química
Drilling wastes treatment
Hydrocarbons biodegradation
Oil-based drilling cuttings
Organic wastes
Paladino, Gabriela Lucía
Arrigoni, Juan Pablo
Satti, Patricia
Morelli, Irma Susana
Mora, Verónica C.
Laos, F.
Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
topic_facet Química
Drilling wastes treatment
Hydrocarbons biodegradation
Oil-based drilling cuttings
Organic wastes
description Oil-based drilling cuttings comprise a large and hazardous waste stream generated by oil and gas wells drilling operations. Oil-based cuttings are muddy materials with high contents of salts and hydrocarbons. Composting strategies have shown to be effective in the biodegradation of petroleum hydrocarbons, and it offers numerous advantages in comparison with other bioremediation methods. In order to assess the effectiveness of drilling cuttings bioremediation by composting with food and garden wastes, an experiment was conducted in 60-L reactors for 151 days. Four treatments were carried out: only oil-based cuttings, two proportions (in a volume basis) of organic wastes to drilling cuttings (33 and 75 %) and only organic wastes (as a traditional composting reference), with pine-tree woodchips as bulking agent. High degradation percentages of total hydrocarbons (≈82 %), n-alkanes (≈96 %) and the 16 USEPA-listed polycyclic aromatic hydrocarbons (≈93 %) were reached in the treatment with 75 % of organic wastes, and applying 33 % of organic wastes was not more effective than not applying organic wastes for the drilling cuttings hydrocarbons biodegradation. Furthermore, in the treatment with 75 % of organic wastes, alkanes half-life and polycyclic aromatic hydrocarbons half-life were about 10 times and four times lower, respectively, than those in the treatment with 33 % of organic wastes. Possibly, lower hydrocarbons and salts initial concentrations (i.e., lower toxicity), higher microbial counts, adequate nutrient proportions and water content supported a high biological activity with a consequent elevated biodegradation rate in the treatment with 75 % of organic wastes.
format Articulo
Articulo
author Paladino, Gabriela Lucía
Arrigoni, Juan Pablo
Satti, Patricia
Morelli, Irma Susana
Mora, Verónica C.
Laos, F.
author_facet Paladino, Gabriela Lucía
Arrigoni, Juan Pablo
Satti, Patricia
Morelli, Irma Susana
Mora, Verónica C.
Laos, F.
author_sort Paladino, Gabriela Lucía
title Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
title_short Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
title_full Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
title_fullStr Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
title_full_unstemmed Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
title_sort bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/127132
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bdutipo_str Repositorios
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