Distribuição ambiental de poluentes orgânicos encontrados em lodos de esgoto

Paraíba, L. C.; Saito, Maria Lucia

doi:10.1590/s0100-204x2005000900003

Cited by 6 publications

(8 citation statements)

References 15 publications

(17 reference statements)

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“…The phenanthrene (light PAH) characteristics such as low lipid affinity, relatively high water solubility and high vapor pressure favor its preferential uptake by plants, in this case maize plants, and its transport to grains. 19,25 In this research, the SS analysis revealed 67% of PAHs with two, three or four aromatic rings (light PAHs) and 33% with five or six aromatic rings (heavy PAHs). Sewage sludge PAH and other compound contents may be seasonal dependent, and retention and bioavailability in soil samples depend on sorption, water solubility, and charged functional groups in the molecules.…”

mentioning

confidence: 62%

“…Among the pollutants, Dreher 23 studied the classes of PAHs, polychlorinated biphenyls, chloride pesticides, dioxins and furans, octil-nonylphenols, polycyclic mixtures, phthalates, polybrominated diphenyl ethers, organotins, linear alkylbenzene sulfonates, bisphenols, pharmaceutical products and heavy metals. Krogmann 24 and Paraíba and Saito 25 pointed out the need of continuous organic pollutant monitoring in sewage sludges from different origins.…”

Section: Introductionmentioning

confidence: 99%

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Risk simulation of soil contamination by polycyclic aromatic hydrocarbons from sewage sludge used as fertilizers

Paraíba¹,

Queiroz²,

Souza³

et al. 2011

J. Braz. Chem. Soc.

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Este trabalho investigou a presença de 16 hidrocarbonetos policíclicos aromáticos (HPAs) em lodo de esgoto e em solo com aplicação de lodo como fertilizante agrícola e simulou o risco de contaminação por HPAs a longo prazo. As amostras foram extraídas usando diclorometano e em seguida com n-hexano em banho ultrassônico. A limpeza do extrato foi feita em coluna de alumina. As quantificações dos HPAs foram obtidas por cromatografia gasosa acoplada a um espectrômetro de massas (GC-MS/MS ion trap). Os resultados evidenciaram que HPAs encontrados em lodos de esgoto podem apresentar risco de contaminação de solos. As simulações das concentrações dos HPAs no solo por meio de modelos matemáticos foram utilizadas para indicar uma ordem de prioridade para monitoramento da qualidade do solo: fenantreno > criseno > benzo(k)fluoranteno > benzo(a)pireno > pireno > benzo(b)fluoranteno > benzo(g,h,i)perileno > indeno (1,2,3-c,d)pireno > fluoranteno > benzo(a)antraceno > dibenzo(a,h)antraceno > fluoreno > antraceno > naftaleno > acenafteno > acenaftileno.This work investigated the presence of PAH in sewage sludge and in soil with sewage sludge applied as agricultural fertilizer and simulated a long-term risk of soil contamination by PAH. The samples were extracted using dichloromethane and then with n-hexane in ultrasonic bath. The clean-up of the extract was done on a column containing alumina. The residual PAH were obtained using a gas chromatograph coupled to a mass spectrometer (ion trap GC-MS/MS). The results evidenced that PAH concentration levels found in sewage sludge might raise potential contamination risks to the soil. Simulations of the concentrations of PAHs in soil, by mathematical modeling, allowed to indicate a priority order for monitoring soil quality in terms of these contaminants: phenanthrene > chrysene > benzo(k)fluoranthene > benzo(a)pyrene > pyrene > benzo(b)fluoranthene > benzo(g,h,i)perylene > indeno (1,2,3-c,d)pyrene > fluoranthene > benzo(a)-anthracene > dibenzo(a,h)anthracene > fluorene > anthracene > naphthalene > acenaphthene > acenaphthylene. Keywords: sewage sludge, PAH, biosolid, ion trap GC-MS/MS, soil contamination IntroductionPolycyclic aromatic hydrocarbons (PAHs) are a group of non-polar hydrophobic organic compounds comprised of two or more fused aromatic rings.Due to their toxic, mutagenic, estrogenic, and/or carcinogenic properties, sixteen PAH compounds have been identified as pollutants by the US-EPA 1 and seven of them are considered carcinogenic. 2 For this reason, these organic pollutants are considered the most toxic to aquatic and terrestrial life and of high priority in environmental studies: acenaphthene, acenaphthylene, anthracene, benzo(a)anthracene, benzo(a)pyrene, benzo(b) fluoranthene, benzo(g,h,i)perylene, benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, fluoranthene, fluorene, indeno (1,2,3-c,d) Paraíba et al. 1157 Vol. 22, No. 6, 2011 grilled followed by flame-gas and oven grilled dishes. Kulhánek et al. 7 used models, statistical regressions and the PAH bioc...

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mentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Risk simulation of soil contamination by polycyclic aromatic hydrocarbons from sewage sludge used as fertilizers

Paraíba¹,

Queiroz²,

Souza³

et al. 2011

J. Braz. Chem. Soc.

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“…Conclui-se também, a partir dos valores de pressão de vapor e da constante de Henry (K H = 1,2 x 10 -3 L atm/mol), que a perda por volatilização é insignificante. 7,9 Estudos mostram que o tempo de meia-vida por biodegradação no solo é de 120 a 309 dias. Toxicologicamente, o BaP é considerado como carcinogênico, mostra efeitos embriotóxicos e teratogênicos.…”

Section: Propriedades Do Benzo(a)pirenounclassified

Avaliação do destino e bioacumulação de benzo(a)pireno através de simulação computacional

Froehner¹,

Martins²

2008

Quím. Nova

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Recebido em 25/4/07; aceito em 11/10/07; publicado na web em 2/4/08 ASSESSMENT OF FATE AND BIOACCUMULATION OF BENZO(A)PIRENE BY COMPUTER MODELING. The objective of this work was to evaluate the environmental distribution of benzo(a)pirene, a polycyclic aromatic hydrocarbon, by the EQC model. The modeling of the contaminant distribution was accomplished by means of the fugacity model applied to a hypothetical scenario constituted by air, water, soil and sediment. The modeling and simulations revealed that the soil is the preferential compartment. We also discuss the implications of the results about fate and ecological risks associated with benzo(a)pirene. We concluded that the emissions of HPAs can not be ignored and bioaccumulation among others risks can be induced.

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“…Rodríguez-Morgado et al (2015) also highlighted that the use of different types of SS in the soil can generate distinct enzymatic activities due to the variation in the microbiological community present in each SS. Due to the SS environmental risks, its growing world production and its rich composition of organic matter and nutrients (e.g., nitrogen, phosphorus, potassium, calcium, copper, cadmium, zinc, and manganese), some researchers have suggested the use of SS as an agricultural Nevertheless, SS can also contain harmful substances for living organisms and the environment, such as copper, nickel, lead, cadmium, and mercury, in addition to organic compounds, such as phenols, benzenes, anthracenes, linear sulfonated alkylbenzenes, and pathogenic microorganisms (Almeida et al, 1998;Holmstrup et al, 2001;Lopes et al, 2005;Lourenço, 1997;Paraiba and Saito, 2005).…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicological and microbiological assessment of sewage sludge associated with sugarcane bagasse

Sommaggio

Mazzeo

Anna

et al. 2018

Ecotoxicology and Environmental Safety

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Sewage sludge (SS) obtained after sewage treatment process may contain several toxic substances. Bioremediation can decrease the toxicity of the sludge, mainly when it is associated with stimulant agents, such as sugarcane bagasse (B). Samples of pure SS (SSP); SS+B; SS+Soil; and SS+B+Soil were bioremediated for 1, 3, and 6 months (T1, T2, and T3, respectively). After each period, the cytotoxic, genotoxic, and mutagenic potentials of the solid samples and their respective aqueous extracts (aqueous eluate and percolate water) were evaluated by the Allium cepa test. A microbiological analysis of the samples was also performed after each period tested. All solid samples of SS+B (in T1, T2, and T3) and the solid sample of SSP (treatment T3) showed a significant decrease of cell division (cytotoxic effects). The aqueous eluate extracts of SS+B (T1 and T3) and SSP (T2 and T3) induced cytotoxic effect. The solid sample of SS+B (T2 and T3) and aqueous extracts of SSP (T1) were genotoxic, indicating a harmful effect of SS on A. cepa, even after 6 months of bioremediation. There was an alternation in the microbial community both in diversity and in abundance, with the predominance of nonfermenting gram-negative bacilli. The tested bioremediation periods were not sufficient for the complete detoxification of SS, and the use of B did not seem to contribute to the degradation of the pollutants to inert compounds. These data emphasize that a specific relationship should exist between the sludge characteristic and the biostimulating agent used to promote a more efficient bioremediation. These results suggest the necessity to study longer periods of biodegradation and the use of other decomposing agents for greater safety and sustainability for the agricultural use of this residue.

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Distribuição ambiental de poluentes orgânicos encontrados em lodos de esgoto

Cited by 6 publications

References 15 publications

Risk simulation of soil contamination by polycyclic aromatic hydrocarbons from sewage sludge used as fertilizers

Risk simulation of soil contamination by polycyclic aromatic hydrocarbons from sewage sludge used as fertilizers

Avaliação do destino e bioacumulação de benzo(a)pireno através de simulação computacional

Ecotoxicological and microbiological assessment of sewage sludge associated with sugarcane bagasse

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