DOI: 10.11606/d.3.2008.tde-15092008-140303
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Tratamento de solos contaminados com bifenilas policloradas (PCBs).

Abstract: Devido à alta toxicidade, a produção e comercialização dos PCBs (Polychlorinated Biphenyls-Bifenilas Policloradas) estão proibidas no mundo todo. Esses compostos foram utilizados principalmente como base de misturas comerciais em óleos dielétricos para transformadores e capacitores. Hoje existem diversas áreas contaminadas com essas substâncias que são de difícil degradação ocasionada pela sua elevada estabilidade térmica e química. Há diversos estudos sobre diferentes técnicas de tratamento de áreas contamina… Show more

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Cited by 3 publications
(4 citation statements)
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References 40 publications
(36 reference statements)
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“…Immobilization technology consists in the creation of physical barriers to avoid the migration of the contaminants, such as processes of solidification/stabilization (encapsulation of the contaminants). The processes of destruction are based, mainly, on the use of high temperatures and chemical methods, such as incineration, chemical reduction, chemical oxidation, photolysis and bioremediation; and the separation consists in retaining, isolating or extracting the contaminants to a phase of easier management or to a more concentrated phase, reducing the volume of the material to be remediated or disposed, such as processes of thermal desorption, washing the soil, extraction by solvent and supercritical extraction [61,62].…”
Section: Types Of Treatment Of Contaminated Soilsmentioning
confidence: 99%
See 1 more Smart Citation
“…Immobilization technology consists in the creation of physical barriers to avoid the migration of the contaminants, such as processes of solidification/stabilization (encapsulation of the contaminants). The processes of destruction are based, mainly, on the use of high temperatures and chemical methods, such as incineration, chemical reduction, chemical oxidation, photolysis and bioremediation; and the separation consists in retaining, isolating or extracting the contaminants to a phase of easier management or to a more concentrated phase, reducing the volume of the material to be remediated or disposed, such as processes of thermal desorption, washing the soil, extraction by solvent and supercritical extraction [61,62].…”
Section: Types Of Treatment Of Contaminated Soilsmentioning
confidence: 99%
“…The efficiency of the chemical oxidation in soil is influenced, mainly, by factors such as concentration of iron, concentration of peroxide, presence of other organic compounds competitive by hydroxyl and pH [62]. Moreover, some researchers have observed a strong increase in the oxidant power of the Fenton reagent when combined with radiation UV or UV-visible, called Photo-Fenton.…”
Section: Advanced Oxidative Processes (Aop)mentioning
confidence: 99%
“…The simulated contamination resulted in materials with 60.000 mg PCBs/kg material. The main properties of the soil, characterized in previous work [20], are presented in Table 1. The wood used was a mixture of Pine (Araucaria angustifolia), Jatoba (Hymenaea sp.)…”
Section: Simulated Contamination Of Wood and Soil Materialsmentioning
confidence: 99%
“…De acordo com CETESB (1999), durante décadas o solo foi considerado um receptor ilimitado de substâncias nocivas, em virtude de seu suposto "poder tampão e potencial de autodepuração", que permitiria sua recuperação sem o surgimento de grandes impactos para o meio. Entretanto este uso, aliado a outros, como por exemplo, o uso indiscriminado e descarte indevido de substâncias perigosas, levaram a uma série de problemas graves, como catástrofes ecológicas e contaminação de pessoas, animais, e do ambiente (Policarpo, 2008).…”
Section: Introductionunclassified