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151.
Review of fly ash inertisation treatments and recycling 总被引:1,自引:0,他引:1
Annalisa Zacco Laura Borgese Alessandra Gianoncelli Rudolf P. W. J. Struis Laura E. Depero Elza Bontempi 《Environmental Chemistry Letters》2014,12(1):153-175
Fly ash (FA) is a by-product of power, and incineration plants operated either on coal and biomass, or on municipal solid waste. FA can be divided into coal fly ash, obtained from power plant burning coal, flue gas desulphurisation FA, that is, the by-product generated by the air pollution control equipment in coal-fired power plants to reduce the release of SO2, biomass FA produced in the plants for thermal conversion of biomass and municipal solid waste incineration (MSWI) FA, that is, the finest residue obtained from the scrubber system in a MSWI plant. Because of the large amount produced in the world, fly ash is now considered the world’s fifth largest material resource. The composition of FA is very variable, depending on its origins; then, also pollutants can be very different. In this frame, it is fundamental to exploit the chemical or physical potentials of FA constituents, thus rendering them second-life functionality. This review paper is addressed to FA typology, composition, treatment, recycling, functional reuse and metal and organic pollutants abatement. Because of the general growing of environmental awareness and increasing energy and material demand, it is expected that increasing recycling rates will reduce the pressure on demand for primary raw materials, help to reuse valuable materials which would otherwise be wasted and reduce energy consumption and greenhouse gas emissions from extraction and processing. 相似文献
152.
Alessandra Colombo Giuseppe Cappelletti Silvia Ardizzone Iolanda Biraghi Claudia L. Bianchi Daniela Meroni Carlo Pirola Francesca Spadavecchia 《Environmental Chemistry Letters》2012,10(1):55-60
Bisphenol A is an endocrine disruptor. Complete mineralization of bisphenol A is therefore a primary environmental issue.
Here, the combination of ozonation and photocatalysis by TiO2 is proposed for the degradation and final mineralization of bisphenol A. TiO2 films deposited onto two sides of an Al lamina show good stability and high surface roughness. We used a specific experimental
setup employing two facing ultraviolet lamps and TiO2 layers, together with an ozone flux. High-performance liquid chromatography–mass spectrometry determinations on bisphenol
A solutions sampled at different reaction times and Fourier Transform Infrared analyses of the oxide at the end of the reaction
were performed to study the reaction intermediates and the overall degradation mechanism. Our results show that pollutant
mineralization achieved with the combined method is far higher, of 55% in the case of 0.3 mM bisphenol A, than those obtained
by individual treatments such as photolysis (<3%), ozonation (6%), photocatalysis (6%), and by other combined processes: photolytic
ozonation (13%) and catalytic ozonation (15%). This finding is explained by the occurrence of highly synergistic effects. 相似文献
153.
154.
Nickolas M. Waser Mary V. Price Daniel T. Blumstein S. Reneé Arózqueta Betsabé D. Castro Escobar Richard Pickens Alessandra Pistoia 《Die Naturwissenschaften》2014,101(5):427-436
Spatial gradients in human activity, coyote activity, deer activity, and deer herbivory provide an unusual type of evidence for a trophic cascade. Activity of coyotes, which eat young mule deer (fawns), decreased with proximity to a remote biological field station, indicating that these predators avoided an area of high human activity. In contrast, activity of adult female deer (does) and intensity of herbivory on palatable plant species both increased with proximity to the station and were positively correlated with each other. The gradient in deer activity was not explained by availabilities of preferred habitats or plant species because these did not vary with distance from the station. Does spent less time feeding when they encountered coyote urine next to a feed block, indicating that increased vigilance may contribute, along with avoidance of areas with coyotes, to lower herbivory away from the station. Judging from two palatable wildflower species whose seed crop and seedling recruitment were greatly reduced near the field station, the coyote–deer–wildflower trophic cascade has the potential to influence plant community composition. Our study illustrates the value of a case-history approach, in which different forms of ecological data about a single system are used to develop conceptual models of complex ecological phenomena. Such an iterative model-building process is a common, but underappreciated, way of understanding how ecological systems work. 相似文献
155.
Alessandra Galiè 《Natural resources forum》2013,37(1):31-42
This paper presents the findings of a study on the governance of seed conducted in the framework of a participatory plant breeding (PPB) programme, based on a multi‐year inquiry with a panel of ten Syrian households. The study assessed the interactions between governance regimes regulating the rights to access and control genetic resources at international and national level, compared to the actual ability of the respondent women farmers to access and control the seed of varieties they co‐developed with the PPB programme. The paper argues that gender equal access to seed can “optimally” contribute to enhancing household food security in small scale farming. The paper also argues that to support a gender‐equal access to seed in the respondent households legislation needs to explicitly protect the rights of women farmers to access and share the benefits of genetic material and draw from empirical evidence of the actual access to and control of seed at ground level. 相似文献
156.
Mali Matilda Di Leo Antonella Giandomenico Santina Spada Lucia Cardellicchio Nicola Calò Maria Fedele Alessandra Ferraro Luciana Milia Alfonsa Renzi Monia Massara Francesca Granata Tommaso Moruzzi Letizia Buonocunto Francesco Paolo 《Environmental science and pollution research international》2022,29(41):62281-62298
Environmental Science and Pollution Research - The Gulf of Naples located in a high anthropized coastal area is subjected to an infrastructural intervention for the installation of a submarine... 相似文献