Search results for "Environmental preservation"

showing 3 items of 3 documents

Optimal growth and land preservation

1997

A model of optimal economic growth with a constant population subject to a constraint on the availability of land is presented. It takes account of the dual character of land as a production factor and as a consumption good (environmental amenities) by determining the optimal intertemporal allocation of land between productive and recreational uses. An extension of the analysis for the case of a growing population with endogenous growth based on human capital accumulation shows that if the rate of discount is not very low then there exists a set of balanced growth paths compatible with a constant allocation of land. En este trabajo se presenta un modelo de crecimiento económico óptimo con u…

Consumption (economics)Economics and Econometricseducation.field_of_studyEndogenous growth theoryNatural resource economicsPopulationHuman capitalDual (category theory)Crecimiento óptimo asignación intertemporal de la tierra preservación medioambiental crecimiento de la población crecimiento endógeno capital humano Optimal growth intertemporal land allocation environmental preservation population growth endogenous growth human capitalDevelopment economicsEconomicsProduction (economics)Constant (mathematics)educationConstraint (mathematics)Resource and Energy Economics
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Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study

2016

Abstract The paper reports the results of nitrous oxide (N 2 O) emissions from aerobic and anoxic tank of a Sequential Batch Membrane Bioreactor (SB-MBR) pilot plant. The influence of salinity variation on N 2 O emission was analyzed by gradually increasing the inlet salt concentration from 0 to 10 g NaCl L −1 . The observed results showed that the N 2 O concentration of the gaseous samples was strongly influenced by the salt concentration. This result was likely related to a worsening of the nitrification activity due to the effect of salinity on autotrophic bacteria. Dissolved oxygen concentration and salinity were found to be the key factors affecting N 2 O concentration in the gaseous s…

Environmental EngineeringEnvironmental preservation0208 environmental biotechnologyBiomedical EngineeringBioengineeringSequencing batch reactorWastewater treatment02 engineering and technology010501 environmental sciencesMembrane bioreactor01 natural scienceschemistry.chemical_compoundBioprocess monitoringBioreactor0105 earth and related environmental sciencesSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleChemistryGlobal warming potentialtechnology industry and agricultureEnvironmental engineeringNitrous oxideAnoxic waters020801 environmental engineeringSequencing batch reactorSalinityPilot plantEnvironmental chemistryMembrane bioreactorNitrificationBioprocess monitoring; Environmental preservation; Global warming potential; Membrane bioreactors; Sequencing batch reactor; Wastewater treatment; Biotechnology; Bioengineering; Biomedical Engineering; Environmental EngineeringBiotechnologyBiochemical Engineering Journal
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Ionic Liquid Gels: Tunable and Multifaceted Materials

Materials based on ionic liquids retain properties of solvent components, like low vapor pressure, high thermal stability and structure tunability. The latter allows changing properties of materials by making small variations in the cation or anion structure, opening the way to a plethora of different applications. In this context, ionic liquid gels can represent a challenge especially if they are obtained from gelation of ionic liquid binary mixtures or of organic salts in ionic liquids. In the framework of our interest in studying ionic liquids properties and applications, in the last few years, we have addressed our attention to the obtainment of ionic liquid gels.1 We have deeply invest…

ionic liquids supramolecular gel environmental preservation environmental remediationSettore CHIM/06 - Chimica Organica
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