Chemical and microbiological characterization of mangrove sediments after a large oil-spill in Guanabara Bay - RJ - Brazil

Maciel-Souza, Maria do Carmo; Macrae, Andrew; Volpon, Antonia Garcia Torres; Ferreira, Patrícia Silva; Mendonça-Hagler, Lêda C.

doi:10.1590/s1517-83822006000300013

Cited by 30 publications

(18 citation statements)

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“…They observed that the PAH levels in the Brazilian mangrove were between two and six times higher than the highest levels (6.19 μg.g −1 ) found in Hong Kong (Tam et al 2001). In general, PAH levels found in Baía de Guanabara were very high by global comparisons (Maciel-Souza et al 2006). Thus, one of the great challenges that we encounter when comparing studies of mangrove bioremediation is not only the type and levels of contamination found in each case but also the distribution of the pollutant(s) within the studied mangrove.…”

Section: Mangrove Contamination By Petroleum Hydrocarbonsmentioning

confidence: 96%

“…Tam et al (2001) evaluated the concentration of PAHs in 20 sediment sampling sites collected in four different mangroves in Hong Kong, finding levels from 356 to 11,098 ng.g −1 and described the great heterogeneity in the distribution of petroleum hydrocarbons that may occur in these environments. Maciel-Souza et al (2006) compared PAH levels found in the Baía de Guanabara (Brazil) mangrove to the sampling sites evaluated by Tam et al (2001). They observed that the PAH levels in the Brazilian mangrove were between two and six times higher than the highest levels (6.19 μg.g −1 ) found in Hong Kong (Tam et al 2001).…”

Section: Mangrove Contamination By Petroleum Hydrocarbonsmentioning

confidence: 99%

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Bioremediation of Mangroves Impacted by Petroleum

Santos

Carmo

Paes

et al. 2010

Water Air Soil Pollut

131

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Section: Mangrove Contamination By Petroleum Hydrocarbonsmentioning

confidence: 96%

Section: Mangrove Contamination By Petroleum Hydrocarbonsmentioning

confidence: 99%

Bioremediation of Mangroves Impacted by Petroleum

Santos

Carmo

Paes

et al. 2010

Water Air Soil Pollut

131

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“…In Guanabara Bay, Marciel-Souza et al (2006) reported a positive contribution of natural attenuation in reduction of total petroleum hydrocarbon, Polycyclic Aromatic Hydrocarbons (PAH's) in such mangrove sediments. Okoro (2010) studied bioremediation in Escravos mangrove swamp polluted by crude oil using NPK fertilizer.…”

Section: Ajesmentioning

confidence: 99%

BIOREMEDIATION OF PETROLEUM HYDROCARBON-POLLUTED MANGROVE SWAMPS USING NUTRIENT FORMULA PRODUCED FROM WATER HYACINT (<I>EICCHORNIA CRASSIPES</I>)

Orji¹,

Ibiene

Okerentugba

2013

American Journal of Environmental Sciences

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Laboratory-scale studies were carried out using a nutrient formula produced from Eicchornia crassipes plant to achieve bioremediation of crude oil impacted mangrove soil. In a 70 day study, the culturable heterotrophic bacterial population of the Eichhornia crassipes recipe increased from 6.26×105 Cfu/g to 2.69×10 7 Cfu/g. The control set-up had its total culturable bacterial count increased from 5.76×10 5 Cfu/g to 1.24×10 6 Cfu/g. Statistical analyses showed significant difference for the two conditions (p ≥ 0.05). The total culturable heterotrophic fungal count in the Eichhornia crassipes recipe treatment increased from 5.36×105 Cfu/g to 2.50×10 7 Cfu/g respectively. The total culturable hydrocarbon utilising bacteria in Eichhornia crassipes treated polluted mangrove soil increased from 2.52×104 Cfu/g to 3.81×10 7 Cfu/g. Statistical analyses showed significant difference at p ≥ 0.05 level for the two conditions (Eicchornia crassipes nutrient treated soil and control). The total culturable hydrocarbon utilising fungal counts increased significantly for both the control and Eichhornia crassipes treatment. There was no regular trend in pH changes in all the conditions. The conductivity value of the Eichhornia crassipes recipe treated soil decreased progressively. Phosphate, nitrate, %total organic carbon, Total Hydrocarbon Content (THC). Studies using Gas chromatographic analyses showed that in the Eichhornia crassipes recipe treated polluted mangrove soil, 0, 58.92 and 75.36% were lost at zero hour, 28th day and 70th day respectively. In addition, in the control experimental set-up, 0, 7.14 and 13.42% of TPH were lost at zero hour, 28th day and 70th day respectively. There was no significant difference between the control experiment and Eichhornia crassipes (p = 0.054). The use of organic nutrient sources such Eichhornia crassipes recipe/nutrient powder is of good use as source of limiting nutrient needed for bioremediation of crude oil impacted medium.

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“…-Northwest Sector: this sector comprises the stations located between Governador Island and the mainland (Stations 1, 2, 3 and 5). Stations 1, 2 and 3, closer to REDUC, are permanently influenced by the effluent and atmospheric processes, and they, especially the mangrove area (MACIEL-SOUZA et al, 2006), were recently impacted by oil spills. High levels of coprostanol (an indicator of fecal contamination) were recently reported in the region near stations 2 and 3, and were the highest anywhere in the bay (CARREIRA et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Acute and chronic toxicity of sediment samples from Guanabara Bay (RJ) during the rainy period

et al. 2010

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A B S T R A C TGuanabara Bay is a marine-estuarine environment of high ecological and socio-economic importance, subject to a variety of environmental impacts. Sediment is the eventual repository for most substances introduced into water bodies and may, therefore, provide an integrated measure of the environmental quality, which can be assessed by many different approaches. In this project, the quality of sediments from Guanabara Bay was evaluated by the ecotoxicological approach: whole-sediment toxicity tests, using Tiburonella viscana, and porewater, elutriate and sediment-water interface chronic toxicity tests, using embryos of Lytechinus variegatus, were applied. Sediments were collected at 14 sampling stations, distributed across the bay. Chronic tests showed significant toxicity in most of the sediment samples. Sediments from stations 1, 2, 3, 6, 8, 10, 11, 12 and 15 showed acute toxicity as well. The results of the different tests were well correlated, and their integration showed that the sediments analyzed were considered unsuitable for aquatic life, resulting in the environmental degradation of Guanabara Bay. In this context, the control of pollution sources and multi-purpose management are required to improve the environmental quality. R E S U M OA Baía de Guanabara é um ambiente marinho-estuarino de grande relevância ecológica e sócio-econômica, e sujeita a uma ampla gama de impactos ambientais. O sedimento é o principal destino para a maioria das substâncias introduzidas nos corpos d'água, podendo fornecer uma medida integrada da qualidade ambiental, a qual pode ser avaliada por várias abordagens. Neste projeto, a qualidade de sedimentos da Baía de Guanabara foi por uma abordagem ecotoxicológica, por meio de testes de toxicidade aguda de sedimento integral, utilizando Tiburonella viscana, e testes de toxicidade crônica de água intersticial, elutriato e interface sedimento-água, utilizando embriões de Lytechinus variegatus. Os sedimentos foram coletados em 14 estações de amostragem. Nos testes crônicos houve efeitos significativos na maioria das amostras, enquanto os sedimentos coletados nas estações 1, 2, 3, 6, 8, 10, 11, 12 e 15 apresentaram também toxicidade aguda. Houve grande concordância entre os resultados dos diferentes testes, e sua integração mostrou que os sedimentos analisados encontram-se inadequados à vida aquática, indicando degradação ambiental na baía da Guanabara. Nesse contexto, o controle das fontes poluidoras e o gerenciamento dos múltiplos usos da baía devem ser implementados, no sentido da melhora da qualidade ambiental.

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Chemical and microbiological characterization of mangrove sediments after a large oil-spill in Guanabara Bay - RJ - Brazil

Cited by 30 publications

References 18 publications

Bioremediation of Mangroves Impacted by Petroleum

Bioremediation of Mangroves Impacted by Petroleum

BIOREMEDIATION OF PETROLEUM HYDROCARBON-POLLUTED MANGROVE SWAMPS USING NUTRIENT FORMULA PRODUCED FROM WATER HYACINT (<I>EICCHORNIA CRASSIPES</I>)

Acute and chronic toxicity of sediment samples from Guanabara Bay (RJ) during the rainy period

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