Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-12-04T20:21:19Z No. of bitstreams: 1 RayanaHozanaBezerril_TESE.pdf: 1462425 bytes, checksum: cac67c7bf1570bf9fe04615be96e17d0 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2015-12-09T23:46:58Z (GMT) No. of bitstreams: 1 RayanaHozanaBezerril_TESE.pdf: 1462425 bytes, checksum: cac67c7bf1570bf9fe04615be96e17d0 (MD5) / Made available in DSpace on 2015-12-09T23:46:58Z (GMT). No. of bitstreams: 1 RayanaHozanaBezerril_TESE.pdf: 1462425 bytes, checksum: cac67c7bf1570bf9fe04615be96e17d0 (MD5) Previous issue date: 2014-07-25 / Dentre as atividades econ?micas potencialmente poluidoras que comprometem a qualidade do solo e da ?gua subterr?nea est?o os postos revendedores de combust?veis. O vazamento de combust?veis derivados do petr?leo a partir de tanques subterr?neos ou atividades realizadas indevidamente com estes poluentes podem contaminar extensas ?reas, causando s?rios problemas ambientais e toxicol?gicos. O n?mero de postos de combust?veis cresceu desordenadamente, sem nenhum tipo de controle, com isso os impactos ambientais gerados por esses empreendimentos cresceram ocasionando a polui??o do solo e da ?gua subterr?nea. V?rias t?cnicas utilizando tensoativos t?m sido propostas para remedia??o deste tipo de contamina??o. Este estudo apresenta como inova??o a aplica??o de diferentes sistemas contendo tensoativos na fase vapor e compara suas efici?ncias de remo??o de diesel de um solo contendo esse contaminante. Para isso, foi utilizado um sistema que cont?m sete po?os injetores das seguintes solu??es vaporizadas : ?gua, solu??es de tensoativo, microemuls?o e nanoemuls?o, Os tensoativos utilizados foram o ?leo de Coco Saponificado (OCS), em solu??o aquosa e um ?lcool etoxilado UNTL-90: em solu??o aquosa, e em sistemas de microemuls?o e nanoemuls?o. Dentre os sistemas investigados, a nanoemuls?o foi a que apresentou maior efici?ncia de remo??o com 88% do diesel, sendo a mais vi?vel ecol?gica e tecnicamente por ser um sistema com menor teor de mat?ria ativa. / Among the potentially polluting economic activities that compromise the quality of soil and groundwater stations are fuel dealers. Leakage of oil derived fuels in underground tanks or activities improperly with these pollutants can contaminate large areas, causing serious environmental and toxicological problems. The number of gas stations grew haphazardly, without any kind of control, thus the environmental impacts generated by these enterprises grew causing pollution of soil and groundwater. Surfactants using various techniques have been proposed to remedy this kind of contamination. This study presents innovation as the application of different systems containing surfactant in the vapor phase and compares their diesel removal efficiencies of soil containing this contaminant. For this, a system that contains seven injection wells the following vaporized solutions: water, surfactant solution, microemulsion and nanoemulsion, The surfactants used were saponified coconut oil (OCS), in aqueous solution and an ethoxylated alcohol UNTL-90: aqueous solution , and nanoemulsion and microemulsion systems. Among the systems investigated, the nanoemulsion showed the highest efficiency, achieving 88% removal of residual phase diesel, the most ecologically and technically feasible by a system with lower content of active matter