Edmilson Santos de Lima

Federal University of Pernambuco, Arrecife, Pernambuco, Brazil

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Publications (3)8.72 Total impact

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    ABSTRACT: The removal of polyaromatic hydrocarbons (PAH) in tropical clay soil contaminated with diesel oil was evaluated. Three bioremediation treatments were used: landfarming (LF), biostimulation (BS) and biostimulation with bioaugmentation (BSBA). The treatment removal efficiency for the total PAHs differed from the efficiencies for the removal of individual PAH compounds. In the case of total PAHs, the removal values obtained at the end of the 129-day experimental period were 87%, 89% and 87% for LF, BS and BSBA, respectively. Thus, the efficiency was not improved by the addition of nutrients and microorganisms. Typically, two distinct phases were observed. A higher removal rate occurred in the first 17 days (P-I) and a lower rate occurred in the last 112 days (P-II). In phase P-I, the zero-order kinetic parameter (μg PAH g(-1) soil d(-1)) values were similar (about 4.6) for all the three treatments. In P-II, values were also similar but much lower (about 0.14). P-I was characterized by a sharp pH decrease to less than 5.0 for the BS and BSBA treatments, while the pH remained near 6.5 for LF. Concerning the 16 individual priority PAH compounds, the results varied depending on the bioremediation treatment used and on the PAH species of interest. In general, compounds with fewer aromatic rings were better removed by BS or BSBA, while those with 4 or more rings were most effectively removed by LF. The biphasic removal behavior was observed only for some compounds. In the case of naphthalene, pyrene, chrysene, benzo[k]fluoranthene and benzo[a]pyrene, removal occurred mostly in the P-I phase. Therefore, the best degradation process for total or individual PAHs should be selected considering the target compounds and the local conditions, such as native microbiota and soil type.
    Journal of Environmental Management 06/2012; · 3.06 Impact Factor
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    ABSTRACT: RESUMO O evento Cariris Velhos foi investigado numa área em torno da cidade de Afogados da Ingazeira, Pernambuco, Nor-deste do Brasil, situada no terreno Alto Pajeú, um domínio composto toniano-ediacarano da Província Borborema. Nesta área as rochas metassupracrustais do Complexo São Caetano são formadas por biotita-muscovita paragnaisses e gnaisses tangencial D 1 /D 2 , cujo metamorfi smo variou do fácies xisto verde ao anfi bolito, sendo marcado pela intrusão de sheets de ortognaisses. O episódio subsequente D 3 , de caráter extensional foi marcado pela injeção de diques de metadioritos, os quais foram fortemente transpostos pelo episódio posterior D 4 , de natureza transcor-rente. A principal estrutura deste episódio transcorrente é a zona de cisalhamento de Afogados da Ingazeira (ZCAI), cuja idade ediacarana é bem calibrada pela intrusão contemporânea do granito de Solidão, datado em 574 ± 74 Ma. Um estudo geoquímico das rochas metassedimentares indica que os protólitos do bloco SE da ZCAI são grauvacas, enquanto que os do bloco NW representam grauvacas, litoarenitos e arcóseos, mas o padrão de terras raras normalizado para o NASC (North American Shale Composite) não mostra grandes diferenças composicionais entre elas. Possuem assinatura geoquímica de sedimentação sinorogênica, transicionando entre sedimentos derivados de arcos de ilhas oceânicos a continentais. Os pa-drões geoquímicos dos ortognaisses também são indicativos de ambiente de arco magmático, confi rmando conclusões en-contradas por outros autores no estudo das rochas metavulcânicas do terreno Alto Pajeú. A descoberta do evento extensio-nal D 3 pré-transcorrência sugere que a deformação tangencial D 1 /D 2 e o metamorfi smo associado devem estar relacionados a evento orogênico, o que confi rmaria a existência da orogênese Cariris Velhos. Palavras-chave: Nordeste do Brasil; Província Borborema; Terreno Alto Pajeú; Evento Cariris Velhos; Faixa metavul-cano-sedimentar toniana-ediacarana. ABSTRACT The Tonian Cariris Velhos event was studied in the area around Afogados da Ingazeira town, Pernambuco State, Northeast Brazil, which is situated within the Alto Pajeú terrane, a Tonian-Ediacaran composite domain of the Borborema Province. The exposed rocks belong to the São Caetano Complex, which is formed of biotite-muscovite paragneisses and quartz-feldspathic gneisses, derived from arkosic or felsic volcanic protoliths, with marble and quartzite intercalations. The deformation started with a D 1 /D 2 thrusting episode, when metamorphism ranged from greenschist to amphibolite facies, and was accompanied by emplacement of orthogneiss sheets. The subsequent episode, the D 3 phase, had an extensional character and was marked by intrusion of small metadiorite dikes, which were strongly transposed by the D 4 phase, a new episode of transcurrent deformation. The main structure of the D 4 phase is the Afogados da Ingazeira shear zone (ZCAI),
    Geologia USP - Serie Cientifica 08/2011; 11(2):101-121.
  • Lourdinha Florencio, Mario T. Kato, Edmilson S. de Lima
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    ABSTRACT: The Lagoon Olho d'Agua in Pernambuco State, Northeast Brazil has received increasing environmental concern due to significant stress from pollution in the catchment. The existing environmental problems are the result of great pressure from a broad range of human activities, especially in the last 10 years. Serious pollution exists mainly from some industrial and urban activities, which increased intensively after the eighties. There is a strong social and economical pressure for housing and construction near the lagoon, due to the available land nearby beaches and estuarine zone, and recently by growing tourism activities. Uncontrolled land use by low-income communities and the pressure for construction by developers have led to landfilling and to deterioration of water quality in the lagoon catchment. Improvement of the environmental conditions in the catchment needs integrated measures. Guidelines and some specific actions involving several institutions have been established and refer to sanitation and urban infrastructure as the main priorities. A main target is the construction of low-cost sewage system with smaller and decentralised treatment plants.
    Environment International 07/2001; 26(7-8):551-5. · 5.66 Impact Factor