El desarrollo de internet ha traído consigo la posibilidad de almacenar informaciones personales que pueden ser visionadas en los cuatro rincones del planeta, creando así una vasta memoria digital que perenniza la información. Los motores de búsqueda facilitan el acceso a la información a través de métodos de indexación. En Europa, el legislador ha tratado de regular el equilibrio de intereses entre el internauta que lucha por su derecho a la vida privada y los motores de búsqueda que defienden su interés económico. Dentro de este contexto, el juez europeo ordenó a Google la desindexación de URL que atentaban contra el derecho a la vida privada y el motor de búsqueda se limitó a desindexar la información solo en las extensiones geográficas europeas esgrimiendo el interés general. La autoridad francesa de defensa de datos personales ha librado una batalla contra Google para extender el derecho al olvido digital a todas las extensiones geográficas de los motores de búsqueda. Esta lucha de poderes constata la dificultad de hacerse olvidar en internet.
Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans are a group of aromatic hydrocarbons, emitted mostly from anthropogenic sources, that have negative effects on human health. Chlorine and carbon compounds, in combination with temperature and combustion processes, are the main factors in the production of these products that, depending on their structural configuration and formation conditions, may have higher or lower impact in the environment, along the different phases of emission, ambient distribution, final deposition and absorption. Given their potential negative effect on human health, the importance of gaining better knowledge and analysing emission patterns of dioxins from different sources is critical in order to observe the actual trend of transmission of dioxins around the world and take measures to reduce their emission and minimize their impact in the atmosphere. For these reasons, the main objective of this chapter is to provide a basic outline about the dioxin situation, going briefly through the historical evolution of dioxin emissions in order to understand the change in perception towards this chemical agent, followed by a description of the main sources of these pollutants, as well as the typical emission patterns and the most important factors that can affect ambient distribution. The production and formation of these compounds has been followed by important research on different minimization and abatement technologies, to reduce the formation and emission of dioxins to the atmosphere, in order to meet legal emission standards that become more restrictive over the years.
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