Overview of in situ and ex situ remediation technologies for PCB-contaminated soils and sediments and obstacles for full-scale application

Gomes, Helena I.; Dias-Ferreira, Célia; Ribeiro, Alexandra B.

doi:10.1016/j.scitotenv.2012.11.098

Cited by 307 publications

(146 citation statements)

References 175 publications

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“…Considering its numerous applications both in the laboratory [32][33][34][35][36] as well as any attempt of pilot scale or scaling up [4,5,[37][38][39][40], EK appears to be one of the most sufficient and cost-effective alternatives for treating, even, real sediments (dredged or surficial) which often come with the simultaneous presence of multiple contaminants which interact with the constituents of solid matrices, thereby creating other compounds that limit and/or incommode even more the EK process. However, when all contaminants and/or substances are dissolved, they are, then, easily transported (flushed) into the electrolyte chambers, thus obtaining their desirable removal from the polluted soil/sediment sample.…”

Section: Introductionmentioning

confidence: 99%

Performance of electroremediation in real contaminated sediments using a big cell, periodic voltage and innovative surfactants

Hahladakis

Latsos

Gidarakos

2016

Journal of Hazardous Materials

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The present work focused on evaluating the electrokinetic (EK) treatment of real contaminated sediments with toxic metals and polycyclic aromatic hydrocarbons (PAHs), using a big laboratory EK cell, periodic voltage and recently tested non-ionic surfactants. The results indicated that the "day on-night off" application mode of voltage, in conjunction with the selected solubilising agents, favoured the overall EK process. Arsenic, nickel and chromium exhibited the highest removal percentages, obtaining 83%, 67% and 63%, respectively, while zinc and lead attained 54% and 41% at the maximum. Furthermore, in the experiments where the non-ionic surfactants were introduced in the electrolyte chambers, there was a major uniformly removal of PAHs from the entire sediment across the EK cell, indicating the high solubilisation capacity of the enhancing agents. Essentially, transport and in some cases removal of PAHs (particularly from sections adjacent to the electrolyte compartments) also occurred in the unenhanced EK run, mainly due their negative charge, their potential weak bonds to the soil matrix and to the periodic application of voltage. Maximum removal was obtained by the use of Nonidet P40 where app. 1/3 (ca. 6498 g out of 20145 g) of the total initial amount of PAHs were removed from the cell.

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Section: Introductionmentioning

confidence: 99%

Performance of electroremediation in real contaminated sediments using a big cell, periodic voltage and innovative surfactants

Hahladakis

Latsos

Gidarakos

2016

Journal of Hazardous Materials

View full text Add to dashboard Cite

show abstract

“…Por otro lado, las alternativas in situ, como los tratamientos térmicos usando energía de microondas, están limitada a las características del sitio contaminado y requieren también inversiones elevadas (Gomes et al, 2013). Es por eso que la aplicación de tecnologías como la fitorremediación y la biorremediación se expanden rápidamente.…”

Section: Remediación De Suelos Contaminados Con Pcbsunclassified

“…Las tecnologías más comunes para la remediación de suelos contaminados con PCBs se resumen en la Tabla 2 (Gomes et al, 2013).…”

Section: Remediación De Suelos Contaminados Con Pcbsunclassified

“…Clasificación de las tecnologías de remediación de suelos contaminados con PCBs. En color naranja la Fitorremediación utilizada en esta Tesis (Gomes et al, 2013 …”

Section: Remediación De Suelos Contaminados Con Pcbsunclassified

“…Esta tecnología reduce significativamente los costes de la descontaminación tradicional (Gomes et al, 2013), por otra parte la fitorremediación ha ganado popularidad por ser ecológica que utiliza energía solar esencialmente y contribuir a la lucha contra la erosión y ayudar a la restauración de espacios degradados (Dickinson, 2009). Los grandes países y las empresas gustan de colaborar en estos proyectos ganando imagen y con ello ayudan al medio ambiente, dado su gran potencial como técnica sostenible de descontaminación, por lo que ha sido catalogada como una de las "tecnologías top-ten que mejoran la vida humana" (Daar, 2002).…”

Section: Fitorremediación: Perspectivas Molecularesunclassified

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Overview of in situ and ex situ remediation technologies for PCB-contaminated soils and sediments and obstacles for full-scale application

Cited by 307 publications

References 175 publications

Performance of electroremediation in real contaminated sediments using a big cell, periodic voltage and innovative surfactants

Performance of electroremediation in real contaminated sediments using a big cell, periodic voltage and innovative surfactants

Respuesta transcripcional de Populus a bifenilos policlorados: Aspectos aplicados a la fitorremediación

Emerging Contaminants in Wastewater: Sensor Potential for Monitoring Electroremediation Systems

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