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Comparison of biostimulation and bioaugmentation techniques for the remediation of used motor oil contaminated soil BABT
Abdulsalam,Surajudeen; Omale,Adaji Benjamin.
This study was carried out on the bioremediation of used motor oil contaminated soil artificially contaminated to a pollutant level of 40,000ppm using biostimulation and bioaugmentation remediation techniques for 42 days. Four treatment options were investigated in wooden microcosms: Control (T1), water amended (T2), biostimulation (T3) and hybrid of biostimulation and bioaugmentation (T4). The effectiveness of bioremediation processes were monitored using the total petroleum hydrocarbon removal (TPH) and total bacterial count (TBC). T3 had the highest TPH removal rate (69.2±0.05%), followed by T4 (65.2±0.25%) and T2 (58.4±0.5%); the control (T1) had the lowest TPH removal rate (43.2±1.5%). TBC revealed that bioremediation actually took place; T4 had the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Biostimulation; Bioaugmentation; TPH; Used motor oil; Wooden microcosms.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300027
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Investigation about the efficiency of the bioaugmentation technique when applied to diesel oil contaminated soils BABT
Mariano,Adriano Pinto; Angelis,Dejanira de Franceschi de; Pirôllo,Maria Paula Santos; Contiero,Jonas; Bonotto,Daniel Marcos.
This work investigated the efficiency of the bioaugmentation technique when applied to diesel oil contaminated soils collected at three service stations. Batch biodegradation experiments were carried out in Bartha biometer flasks (250 mL) used to measure the microbial CO2 production. Biodegradation efficiency was also measured by quantifying the concentration of hydrocarbons. In addition to the biodegradation experiments, the capability of the studied cultures and the native microorganisms to biodegrade the diesel oil purchased from a local service station, was verified using a technique based on the redox indicator 2,6 -dichlorophenol indophenol (DCPIP). Results obtained with this test showed that the inocula used in the biodegradation experiments were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Bioaugmentation; Soil; Diesel oil; Service station.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500030
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Biodegradation of crude oil by individual bacterial strains and a mixed bacterial consortium BJM
Santisi,Santina; Cappello,Simone; Catalfamo,Maurizio; Mancini,Giuseppe; Hassanshahian,Mehdi; Genovese,Lucrezia; Giuliano,Laura; Yakimov,Michail M..
Three bacterial isolates identified as Alcanivorax borkumensis SK2, Rhodococcus erythropolis HS4 and Pseudomonas stutzeri SDM, based on 16S rRNA gene sequences, were isolated from crude oil enrichments of natural seawater. Single strains and four bacterial consortia designed by mixing the single bacterial cultures respectively in the following ratios: (Alcanivorax: Pseudomonas, 1:1), (Alcanivorax: Rhodococcus, 1:1), (Pseudomonas: Rhodococcus, 1:1), and (Alcanivorax: Pseudomonas: Rhodococcus, 1:1:1), were analyzed in order to evaluate their oil degrading capability. All experiments were carried out in microcosms systems containing seawater (with and without addition of inorganic nutrients) and crude oil (unique carbon source). Measures of total and live...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alcanivorax; Pseudomonas; Rhodococcus; Bioremediation; Bioaugmentation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200377
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Carbazole degradation in the soil microcosm by tropical bacterial strains BJM
Salam,Lateef B.; Ilori,Matthew O.; Amund,Olukayode O..
In a previous study, three bacterial strains isolated from tropical hydrocarbon-contaminated soils and phylogenetically identified as Achromobacter sp. strain SL1, Pseudomonas sp. strain SL4 and Microbacterium esteraromaticum strain SL6 displayed angular dioxygenation and mineralization of carbazole in batch cultures. In this study, the ability of these isolates to survive and enhance carbazole degradation in soil were tested in field-moist microcosms. Strain SL4 had the highest survival rate (1.8 x 107 cfu/g) after 30 days of incubation in sterilized soil, while there was a decrease in population density in native (unsterilized) soil when compared with the initial population. Gas chromatographic analysis after 30 days of incubation showed that in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioaugmentation; Biodegradation; Microcosm; Pseudomonas; Microbacterium; Achromobacter; Carbazole.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401037
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