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This research explores the transformative potential of nanomaterial developments in tending to water and soil contamination through economical natural remediation procedures. Three unmistakable nanomaterials, Nanoparticle A, Nanocomposite B, and Nanotube C, were synthesized and efficiently assessed for their adequacy in poison expulsion. In adsorption tests, Nanocomposite B showed remarkable lead expulsion capacity, outperforming Nanoparticle A and Nanotube C with values of 30 mg/g. Catalytic debasement tests illustrated Nanocomposite B’s predominant proficiency in corrupting phenol, accomplishing a noteworthy 68%, outflanking Nanotube C and Nanoparticle A. A comprehensive natural compatibility appraisal uncovered decreased ecotoxicity and cytotoxicity files for Nanocomposite B, situating it as a naturally inviting choice for remediation. Comparative investigations with related works exhibit the importance of fitting nanomaterial properties focused on poison expulsion. The promising results emphasize Nanocomposite B’s potential as a maintainable and multifunctional arrangement for water and soil remediation. This investigation contributes profitable insights to the developing field of nanotechnology-enabled natural administration, emphasizing the requirement for the capable sending of nanomaterials to attain long-term environmental and human well-being benefits.

Résumé: L'emploi de toilettes sèches mobiles (TSM) se généralise en France depuis une vingtaine d'années, sans qu'il n'existe d'encadrement clair de la gestion des matières générées. Les éventuels impacts sanitaires que peut engendrer la mise en place de telles filières de traitement des urines et matières fécales sont étudiés ici. Cette analyse vise à proposer ensuite des axes d'évolution réglementaire. Un état des lieux des pratiques, des représentations du risque sanitaire et de la réglementation en vigueur a été réalisé. Il a permis de cibler sept événements correspondant à quatre filières de pratiques différentes qui ont été caractérisées. Ces quatre filières (urines, urines avec litière, matières fécales avec litière en plateforme individuelle, matières fécales avec litière en plateforme collective) sont les plus représentatives des pratiques de collecte, transport, traitement et valorisation des urines et matières fécales hors du tout-à-l'égout. L'évaluation des risques sanitaires associée à chaque maillon de ces filières démontre qu'aucune mesure particulière n'est à mener pour les matières de TSM par rapport aux consignes et règles d'hygiène générales pour les filières « eaux usées/excreta ». Il est toutefois proposé une meilleure reconnaissance administrative de ces matières pour faciliter leur accès aux plateformes de compostage collectives, car elles sont aujourd'hui peu acceptées. L'obtention du diplôme maître-composteur (module GC25 du référentiel de l'Agence de l'environnement et de la maîtrise de l'énergie [ADEME]) pour l'opérateur de plateforme individuelle est une bonne garantie de réduction des risques pour la gestion de ces matières. Although portable dry toilets have become widespread in France over the past 20 years, there is no clear administrative framework for managing the materials they generate. This study analyzes the possible health impacts of urine and feces management in order to propose regulatory changes. It inventories practices, representations of the health risk and the regulations in effect. We targeted 7 events and characterized 4 different types of practice. These 4 channels (urine, urine with litter, feces with bulking material in an individual platform, feces with bulking material in a collective platform) are the most representative of the "collection, transport, treatment and recovery" of urine and feces that do not enter the ordinary sewage system. The assessment of the health risks associated with each link in these sectors shows that no special measures need to be taken for dry toilet matter under the general hygiene guidelines and rules for the "wastewater/excreta" sectors. However, we suggest that better administrative recognition of this issue is needed, the standards governing collective composting platforms require them to accept this matter, and that individual platform operator should obtain an officially recognized diploma. [ABSTRACT FROM AUTHOR]

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Copyright of Revue d'Economie Politique is the property of Editions Dalloz Sirrey and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article focuses on the impact of human activities on climatic changes and the global functions of the planet. It is the need of time is to take preventive actions for environmental protection and analyze human actions regarding the climatic drift. Talking about what kind of actions have to be taken in this context, the author considers that it is necessary that an action be taken in a continuous and global way for a long term.

The article discusses the relationship between human activities and problems regarding climatic changes. The consequences of changes in the climatic conditions can be catastrophic and there may be several negative effects of climatic changes on the environment and human life as well. Till now there has been big imprecision in the measurement of global temperature changes.

Abstract: This study deals with Non Aqueous Phase Liquid (NAPL) dissolution in subsurface water in order to predict the pollutant plume development and to optimize remediation processes. An experimental study of NAPL dissolution in porous media is presented. Local water saturation and effluent pollutant concentration measurements are presented for several kinds of porous media. Experimental results show clearly the influence of microscopic and/or macroscopic heterogeneities of the porous media and the distribution of the pollutant on the active dispersion of the NAPL. The NAPL dissolution occurs in several steps which highlights the existence of non-local equilibrium related to the heterogeneity of the porous media. To cite this article: A. Yra et al., C. R. Mecanique 334 (2006). [Copyright &y& Elsevier]