178,574 research outputs found
ANAEROBIO: a new model for the sustainability of the generation of energy by biomass anaerobic digestion
No full textAnaeroBIO is a project funded by the Government of Tuscany Region dealt with
the optimised choice and use of different no-food biomasses and wastes destined to energy
production. Suitable mixtures of biomasses available on regional scale as starting materials were
first selected by means of multivariate statistical analysis applied to database collecting
information regarding several aspects of biomasses. Laboratory scale and small pilot-plant scale
experiments for biogas production were carried out on a number of mixtures previously defined
from a proper experimental design. In last phase of project, the development of a predictive
model that could be easily used for feasibility assessment of plants and projects was performe
Microbiological quality of leacheate from municipal solid waste landfill sites and infection risk for workers. In Christensen TH, Cossu R, Stegmann R. Leachate, gas, operation and health effects in ladfills
No full textEstadística Minera de la Nación año 1943. Rocas de Aplicación y Minerales No Metalíferos, grupo A.
No full textFil: Marquéz, Anibal R. Ministerio de Agricultura. Dirección de Minas y Geología; Argentina.Fil: Stegmann, Adolfo E. Ministerio de Agricultura. Dirección de Minas y Geología; Argentina
Problems in traditional landfilling and proposals for solutions based on sustainability
No full textIn recent years, the Circular Economy has become the key lynchpin underlying the waste management system. However, the emphasis placed on recycling has led, on one hand, to an underestimation of the critical issues that are currently emerging so dramatically (i.e. limited recyclability of materials, instability of markets for secondary raw materials, and accumulation of contaminants present in the recycled materials), whilst on the other to neglect the inescapable role of landfill in waste management. In many cases, landfills are seen as a simple and economical means of disposing of waste, and from a political, legislative and technical viewpoint they are frequently denied the attention devoted to other engineering works, lacking ade-quate financial investment to cover the costs required to ensure a sustainable landfill system. Landfill should be designed and constructed in line with the principle of environmental sustainability, by adopting technical measures aimed at guaranteeing waste stability and immobilisation of contaminants over a period of less than one generation and ensuring a Final Storage Quality in equilibrium with the environment. This article summarises the concept of sustainable landfilling, identifies the technical strategies that characterise this system, describes the critical issues frequently encountered after decades of operation and proposes a series of solutions aimed to control long-term behavior
Estadística Minera de la Nación año 1943. Minerales Metalíferos y No Metalíferos, grupo B
No full textFil: Marquéz, Anibal R. Secretaría de Industria y Comercio. Dirección de Minas, Geología e Hidrogeología; Argentina.Fil: Stegmann, Adolfo E. Secretaría de Industria y Comercio. Dirección de Minas, Geología e Hidrogeología; Argentina
Criteri metodologici per la valutazione dell’efficienza del processo di stabilizzazione dei rifiuti
No full textAl fine di valutare l'efficacia di ricette di stabilizzazione condotte sui differenti tipologie di rifiuti, in termini di diminuzione della lisciviabilità degli inquinanti, sono state messe a punto particolari procedure di Bilancio di Materia. Le procedure sono raccolte e tradotte in calcoli, grazie all’impiego di macro su fogli Excel®, che forniscono il giudizio finale espresso come “Stabilizzazione %”. Il risultato ottenuto misura l’efficacia del processo di trattamento effettuato, valutando la diminuzione o l’aumento (nel caso di processi non efficaci) delle quantità relative di inquinanti lisciviati. La procedura confronta i risultati ottenuti nei test di cessione sui materiali stabilizzati con i risultati al test di cessione sui singoli rifiuti non trattati, opportunamente corretti per la diluizione che i singoli rifiuti hanno ricevuto nella miscela finale. Il metodo si presta per la valutazione della stabilizzazione anche in processi in cui due o più rifiuti sono miscelati tra loro
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