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641.
Correa Carlos Alberto De Oliveira Marcio Adilson Jacinto Christiane Mondelli Giulliana 《Journal of Material Cycles and Waste Management》2022,24(3):1140-1155
Journal of Material Cycles and Waste Management - The present study is concerned with an overview of the main aspects of the selective collection from the municipal solid waste in São... 相似文献
642.
Dromard Charlotte R. Allenou Jean-Pierre Tapie Nathalie Budzinski Hélène Cimmaterra Nicolas De Rock Pauline Arkam Salim Cordonnier Sébastien Gonzalez Jean-Louis Bouchon-Navaro Yolande Bouchon Claude Thouard Emmanuel 《Environmental science and pollution research international》2022,29(54):81546-81556
Environmental Science and Pollution Research - The present study, conducted in the Galion Bay in Martinique, aims to highlight the temporal and seasonal variations of chlordecone contamination (an... 相似文献
643.
Manzo Sonia Parrella Luisa Schiavo Simona Spaziani Fabio Chiavarini Salvatore Tebano Carlo De Maio Lucio Capone Stefano Siciliano Anna Valeria Armiento Giovanna 《Environmental science and pollution research international》2022,29(55):83291-83303
Environmental Science and Pollution Research - In this study we propose, a multi-step strategy of selection and characterization of long-term dataset of contaminant concentrations in different... 相似文献
644.
Mechanochemical treatment to recycling asbestos-containing waste 总被引:1,自引:0,他引:1
Plescia P Gizzi D Benedetti S Camilucci L Fanizza C De Simone P Paglietti F 《Waste management (New York, N.Y.)》2003,23(3):209-218
Numerous industrial and experimental facilities have been set up, particularly in the last ten years, as a result of studies and researches on treating asbestos-containing waste (ACW) to stabilise it and to enable its reuse. Some of the stabilisation processes reduce the hazards of ACW by imprisoning in a cement or resonoid matrix. Other processes modify the fibrous structure of asbestos and transform it into an inert substance. One such inactivation process is mechanochemical transformation. This new technology is extremely interesting both economically and industrially, especially in view of the European Directive 1999/3/CE of 24/4/99, which provides for the obligatory treatment of all types of waste material before its disposal. 相似文献
645.
In this work we present the results of an experimental study on the abatement of polychlorinated biphenyl (PCBs) in contaminated soil using a high energy milling technique, that promotes a reaction only by impact between milling bodies. A sample of soil from a controlled landfill was treated with powdered NaBH(4) using two different hydride/soil ratios (5 and 2.5% w/w). The efficiency of the dehalogenation/hydrogenation reaction was studied as a function of the milling time (3.5 up to 30 h). After each run, the total PCBs content and the production of inorganic chloride were measured. The complete abatement was obtained with a starting PCBs concentration of about 2600 mg/kg. The residual PCBs concentration resulted to be <0.2 mg/kg. The final products of the treatment were biphenyl and NaCl. Other toxic or hazardous organic by-products were not generated. Boron was found as boric acid. 相似文献
646.
An ecological impact study was performed based on in situ biomarker assays with the waterflea Daphnia magna. The effects of metallurgic effluents on the energy metabolism, anti-oxidative metabolism and DNA damage were assessed in caged daphnids during a 4-week study. In situ survival and reproduction studies demonstrated a clear impact on these parameters in organisms exposed in the most polluted areas. At the downstream--sublethal--zone the organisms were disturbed within their tolerance limits, resulting in alterations of their energy metabolism. These data suggest an acclimation hypothesis, which was tested through the analysis of the energy metabolism of resident species: isopods and amphipods. These organisms had shifted to a decrease in their overall energy metabolism compared to the upstream region. This change in some biochemical processes suggests a selective advantage to cope with the prevailing environmental conditions. In addition, we found clear genotoxic effects caused by the industrial discharges that might correlate with a reduction in (long-term) survival. 相似文献
647.
Sediment phosphorus extractants for phosphorus-31 nuclear magnetic resonance analysis: a quantitative evaluation 总被引:2,自引:0,他引:2
Ahlgren J De Brabandere H Reitzel K Rydin E Gogoll A Waldebäck M 《Journal of environmental quality》2007,36(3):892-898
The influence of pre-extractant, extractant, and post-extractant on total extracted amounts of P and organic P compound groups measured with 31P nuclear magnetic resonance (31P-NMR) in lacustrine sediment was examined. The main extractants investigated were sodium hydroxide (NaOH) and sodium hydroxide ethylenediaminetetraacetic acid (NaOH-EDTA) with bicarbonate buffered dithionite (BD) or EDTA as pre-extractants. Post extractions were conducted using either NaOH or NaOH-EDTA, depending on the main extractant. Results showed that the most efficient combination of extractants for total P yield was NaOH with EDTA as pre-extractant, yielding almost 50% more than the second best procedure. The P compound groups varying the most between the different extraction procedures were polyphosphates and pyrophosphates. NaOH with BD as pre-extractant was the most efficient combination for these compound groups. 相似文献
648.
Bhavana Rao Kuchimanchi Imke J. M. De Boer Raimon Ripoll-Bosch Simon J. Oosting 《Ambio》2021,50(10):1809
Increasing food demands are causing rapid transitions in farming systems, often involving intensified land and resource use. While transitioning has benefits regarding poverty alleviation and food outputs, it also causes environmental and social issues over time. This study aims to understand the transitions in farming systems in a region in Telangana, from 1997 to 2015, and their effect on livestock rearing and smallholder livelihoods. We also examine the impact of the transitions on lower caste groups and women in particular. We collected data using a combination of methods, i.e., a household survey, focus group discussions, and secondary data sources, to build a comprehensive picture of the transitions in the region. We found that subsistence mixed farming systems transitioned to market-orientated specialized systems over a short time span. As the transition process gained momentum, households either intensified their production or got marginalized. Technological interventions, development programs with integrated approaches, and market demand for certain agricultural produce triggered increased regional production but also led to the scarcity of water, land, and labor. The transitions marginalized some of the households, changed the role of livestock in farming, and have been inclusive of both lower caste groups and women in terms of increased ownership of large ruminants and access to technologies. However, for women specifically, further increase in workload in the context of farming is also found. 相似文献
649.
650.
Wouter T. De Groot Haranath Tadepally 《Environment, Development and Sustainability》2008,10(4):519-536
In southern India, tens of thousands of village-level irrigation systems (‘tanks’ and feeder channels) are in disrepair. This
paper analyses the results of a local NGO effort that focused on awareness-raising and advice to bring about self-sustained
community action for irrigation system restoration. After designing a model structure that contains both motivational and
capacity (social capital) factors, it is found that (pre-existing) collective social capital, as measured through five simple
indicators, strongly correlates with success of the NGO strategy. The intensity of the NGO’s effort shows a negative correlation
with success, however. The discussion focuses on issues of social capital definition and measurement and the practical implications
of the concept for environmental action, especially the difference between using existing social capital for environmental
management versus the construction of social capital as a basis for later self-sustained environmental work.
Readers should send their comments on this paper to BhaskarNath@aol.com within 3 months of publication of this issue. 相似文献