Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"Settore ICAR/03 - Ingegneria Sanitaria-Ambientale"”.
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Hydrothermal Processes Applied to Sludge Reduction
Conventional Activated Sludge (CAS) systems have been widely implemented to treat wastewater. CAS systems produce huge amounts of waste sludge and its subsequent treatment represents up to 65 % of the operational costs of Waste Water Treatment Plants. The final disposal of sludge is usually …
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A three dimension hyporheic model of the River Bure: Understanding the nutrient dynamics and the role of streambed heterogeneity
The hyporheic zone is often defined as the zone where mixing of surface water and groundwater occurs in shallow sediments beneath and adjacent to rivers. This mixing contributes to create unique biogeochemical conditions that may attenuate contaminants from either upstream surface water or …
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Simultaneous partial Nitritation, Anammox and Denitrification (SNAD) process for treating ammonium-rich wastewaters
Biological nitrogen removal from strong ammonium wastewaters received a great deal of attention during the last years. Since the discovery of anammox bacteria the traditional theory of biological nitrogen removal has been extended to new nitrogen metabolic pathways. This thesis deals with the study …
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On the use of Constructed Wetlands in mountain regions: innovative tools and configurations
The use of Constructed Wetlands (CWs) has been increasing over the last twenty years for decentralized wastewater treatment projects (e.g. rural communities, isolated houses, etc.) because of the low maintenance requirements and operational costs, efficiency in terms of organic matter, nitrogen and …
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Contributions regarding the research of the sustainable development in agro-tourism from a circular economy perspective
The research background and motivation of this paper is related with the role of agro-tourism impact on environment. The research background and motivation of this paper is related with the role of agro-tourism impact on environment. Agro-tourism activities impact on the development of rural area …
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Rapid Startup of Aerobic Granular Sludge Using Cationic Polymer For Industrial Wastewater Treatment
The conventional activated sludge (CAS) process is used worldwide for municipal and industrial wastewater treatment. This technology has been used for over 100 years, providing sanitation and minimizing environmental damage. However, the approach is no longer deemed sustainable due to its extensive …
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Ecosustainable biomethane and fertilizerproduction through anaerobic co-digestionof animal manure and energy crops
In Italy and many European countries energy production from biomass is encouraged by strong economic subsidies so that renewable energy plants, anaerobic digestion plant producing biogas in particular, are getting large diffusion. Nevertheless, it is necessary to define the environmental …
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Extraction and recovery of valuable elements from Red Mud through biohydrometallurgy
Among all the materials, aluminum played a key role in the industrial development of the last two centuries, thanks to the breakthrough of the Bayer process. This consists in alumina extraction from bauxite by chemical dissolution. The main waste produced through the Bayer process is called Red Mud …
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Controlling dark fermentation of agro-industrial waste for valued organic acids production
In recent years, our planet has been facing severe environmental degradation and climate change with consequences for the health of people and repercussions on the social and economic balance. Organic waste contains valuable compounds, worth recovering. Traditional waste management methods are …
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The effect of marine protected areas of the biological environment. A case of study in southern Sardinia (Capo Carbonara (MPA)
The growing interest in environmental issues and the establishment of new protected areas on land and seaside correspond to the worldwide need to understand and preserve the natural development of the ecosystems. The establishment of protected areas is fairly new for the marine habitat. It is …
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The influence of redox dynamics on nitrogen cycling and nitrous oxide emissions from soils
Soils are a dominant source of nitrous oxide (N2O), a potent greenhouse gas. The complexity of drivers of N2O production and emissions has hindered our ability to predict the magnitude and spatial dynamics of N2O fluxes. Soil moisture can be considered a key driver because it influences oxygen …
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Flow and thermal regimes in river networks: effects of hydropower regulation and climate extremes
… Extreme climate change case of heatwaves in 2003 and 2006 are selected and analysed especially. Results of the three research components in correspondents to listed research questions showed that river hydrological regimes have more directly/important influence on the variation of flow …
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Enhancement of wastewater and sludge treatment processes by hydrodynamic cavitation
In the past decades, hydrodynamic cavitation (HC) process was the subject of study by many researchers worldwide. This phenomenon was widely studied in order to understand the reason of its negative effects on hydraulic machinery such as pumps,turbines, valves, etc. Many efforts were made in order …
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Circular economy of Lithium-ion batteries Material flow, environmental and economic analysis of Lithium-ion batteries in Europe and technical, environmental and economic optimization of recycling processes
L'abstract è presente nell'allegato / the abstract is in the attachment
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Stabilization of MSW combustion residues by accelerated carbonation treatment and their potential carbon dioxide sequestration
… consente di migliorare il comportamento ambientale dei residui e ridurre le emissioni di CO2 prodotte dallo stesso termovalorizzatore.
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Critical Analysis of Pyrolysis and Gasification Applied to Waste Fractions with Growing Energetic Content
The present Ph.D. research has made important contributions towards the optimization of light packaging waste to energy alternative processes such as pyrolysis and gasification. Over more the development of an original integrated municipal solid waste scenario model that integrates the experimental …
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Modelling fine sediment transport over an immobile gravel bed
Fine-grained sediment represents a significant component of the total transport load in most fluvial systems around the world that are not limited to the alluvial rivers with sandy beds. A variety of natural or human actions, such as fire, logging, flow diversion, road construction, and urban or …
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Use of electrokinetic and reactive barriers to treat heavy metals-contaminated soils
The combined use of electrokinetic (EK) and reactive barrier (RB) of transformed red mud (TRM) (a by-product of bauxite refinement for alumina production) for the remediation of low permeability contaminated soils by chromium and arsenic was investigated. The combination of EK with RB is a possible …
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Enhancing the relationship between the landscape of energy transition and the ecosystem services
Governments adopt strategies to follow the objective Europe 2020 and focus on the development of Renewable Energy Technologies, RET, to improve the transition of the production of energy from fossil fuels sources to renewable energy sources, RES. More than decades before, the energy transition …
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The Future of Carsharing: A System Dynamics Model
L'abstract è presente nell'allegato / the abstract is in the attachment
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