Tratamento de solo contaminado: análise do encapsulamento de metais pesados

Rojas, José Manuel Ventura; Consoli, Nilo César; Heineck, Karla Salvagni

doi:10.4013/ete.2009.51.06

Cited by 3 publications

(3 citation statements)

References 5 publications

(1 reference statement)

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“…Nesse contexto o ponto que mais exige atenção é a busca por técnicas que possam ser utilizadas com o intuito de reter e de isolar substâncias contaminantes. Entre estas técnicas está o encapsulamento (Rojas et al, 2009). Os agentes encapsulantes mais utilizados são o cimento e a cal.…”

Section: Encapsulamento E Uso Da Cal Na Pavimentaçãounclassified

Avaliação ambiental da utilização de solo contaminado por derivados de petróleo (SCDP) em misturas asfálticas

et al. 2016

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Com a necessidade de uma destinação final mais adequada a vários resíduos, a utilização destes na pavimentação surge como uma alternativa viável. O presente estudo investiga a viabilidade técnica e ambiental da utilização de Solo Contaminado por Derivados de Petróleo (SCDP) em misturas do tipo Areia Asfáltica (AA) usinadas à quente com adição de 30% em massa de SCDP, com e sem utilização da cal. As misturas asfálticas foram dosadas através da metodologia Superpave. Os materiais componentes das misturas asfálticas foram analisados através de ensaios convencionalmente requeridos pelas especificações do DNIT e através dos seguintes ensaios: (i) fluorescência por Raio-X, (ii) lixiviação (NBR – 10.005), e (iii) solubilização (NBR – 10.006). As amostras com resíduos foram avaliadas de três formas: puras, a partir de misturas asfálticas no estado solto, e a partir da água obtida após a percolação desta em Corpos de Provas (CPs) de misturas asfálticas com 30% de resíduo incorporado em massa. As misturas asfálticas foram caracterizadas mecanicamente por meio dos ensaios de módulo de resiliência, resistência à tração e vida de fadiga. A partir dos resultados encontrados nos ensaios mecânicos e ambientais, o uso do SCDP como componente de misturas do tipo AA se mostra como uma opção viável, pois, além desta mistura asfáltica ter apresentado propriedades mecânicas aceitáveis, a solução foi considerada ambientalmente aceitável e menos onerosa se comparada aquela comumente adotada pelas refinarias geradoras do resíduo.

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Section: Encapsulamento E Uso Da Cal Na Pavimentaçãounclassified

Avaliação ambiental da utilização de solo contaminado por derivados de petróleo (SCDP) em misturas asfálticas

et al. 2016

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“…Over time, bioremediation strategies have been demonstrated to be effective, ecological, and economic compared to physiochemical remediation practices which are rather expensive and sometimes ineffective [10][11][12]. Bioremediation includes ex situ and in situ methods.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Approach to Assess Smart Passive Bioventing as a Sustainable Strategy for the Remediation of a Polluted Site by Persistent Organic Pollutants

et al. 2023

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Recently modern methodologies allowed the improvement of conventional bioventing strategies in an engineering technology known as smart passive bioventing (S-PBv). The latter is an increasingly used application to reduce the concentrations of organic contaminants below the relative value of contamination threshold concentration (CSC). The S-PBv exploits the natural fluctuations of atmospheric pressure, which allow air to enter into the subsoil, to facilitate natural remediation processes. In this way, the efforts in terms of economics resources in the remediation process are minimised, the risk of pollutants volatilization is drastically reduced, and the degradation favoured by microorganisms is promoted. Our study aims to provide the essential information to plan a series of in situ tests (pilot test) to verify the applicability of this remediation technology, through the use of intelligent sensors designed and engineered using open-source hardware and software.

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“…Previous methods of remediation of crude oil contaminated soils have some room for improvement to render effective treatment. However, these approaches have been criticized due to its expensive and non-eco-friendly nature which made site reclamation a difficult task [1], [2]. The use of biological methods which include bioattenuation, biostimulation, bioaugmentation, bioventing, and phytoremediation have offered the promising potential for the remediation of crude oil contaminated soils.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Application of Wastewater and Bioventing System for the Treatment of Crude Oil Contaminated Soils

2020

SETWM-20, ACBES-20 &Amp; EEHSS-20 Nov. 16-17, 2020 Johannesburg (SA)

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Environmental pollution is a form of land degradation which has contributed immensely to the reduction of available arable lands and could lead to the total annihilation of the ecosystem if not effectively mitigated. Bioremediation technology offers a biological means which provide an eco-friendly and cost-effective approach for soil remediation in contrast to physicochemical methods. This study aims to evaluate the application of wastewaters and air-injection for the treatment of crude oil contaminated soils. The treatment involves the amendment of crude oil contaminated soils with wastewaters at different ratios and the injection of atmospheric air. The results showed that the combined application of wastewater and air-injection was effective with 60-75% TPH removal efficiency while single application recorded 48-59% and 55% for wastewater and air-injection respectively. The study showed that the application of wastewater and air-injection can serve as a promising strategy for the remediation of crude oil contaminated soils..

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Tratamento de solo contaminado: análise do encapsulamento de metais pesados

Cited by 3 publications

References 5 publications

Avaliação ambiental da utilização de solo contaminado por derivados de petróleo (SCDP) em misturas asfálticas

Avaliação ambiental da utilização de solo contaminado por derivados de petróleo (SCDP) em misturas asfálticas

An Integrated Approach to Assess Smart Passive Bioventing as a Sustainable Strategy for the Remediation of a Polluted Site by Persistent Organic Pollutants

Evaluation of the Application of Wastewater and Bioventing System for the Treatment of Crude Oil Contaminated Soils

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