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951.
Vigneron V Ponthieu M Barina G Audic JM Duquennoi C Mazéas L Bernet N Bouchez T 《Waste management (New York, N.Y.)》2007,27(6):778-791
Nitrified leachate recirculation has been proposed as a promising strategy for sustainable landfill management. In four test reactors, nitrate or nitrite was added (250 mg N-NO(x)(-)L(-1)) during municipal solid waste biodegradation. Nitrogen-oxides reduction reactions were monitored. Denitrification was the main nitrogen reducing reaction observed. On one hand, during the acidogenic waste degradation phase, as high amounts of volatile fatty acids (VFA) were present, nitrogen-oxides reductions were interpreted as heterotrophic denitrifications. On the other hand, denitrification reactions occurring during the late methanogenic phase were accompanied by sulphate productions and, as VFA were not detected, it was probably an autotrophic reaction. Denitrification inhibition was observed once. Ammonium concentration increased suggesting the occurrence of a dissimilatory nitrate reduction to ammonium (DNRA). Statistical treatment of analytical data revealed that only H(2)S concentration had a significant negative effect on N(2) production in our system. NO production was observed once when nitrite was injected during the acidogenic phase resulting in a total waste degradation inhibition. These results indicate that the consequences of nitrified leachate recirculation in full-scale landfills need to be carefully examined especially during the acidogenic phase or in the presence of waste containing high quantities of sulphur. 相似文献
952.
Cadmium levels in Europe: implications for human health 总被引:5,自引:0,他引:5
Jilang Pan Jane A. Plant Nikolaos Voulvoulis Christopher J. Oates Christian Ihlenfeld 《Environmental geochemistry and health》2010,32(1):1-12
In this study we used the Forum of European Geological Surveys geochemical baseline data to examine the distribution of cadmium
(Cd) in Europe, with a particular reference to the international soil and water guideline values. The highest cadmium levels
were found to occur in topsoil and to follow closely the distribution of P2O5, suggesting that the contamination was from the use of rock phosphate fertilizer in intensive arable agriculture. In terms
of human health impacts, food (up to several hundred μg/day) was found as the only major route of exposure to Cd for the non-smoking
general population. It appeared that low levels of chronic exposure to Cd resulted in completely different human health impacts
than those high levels that had caused the ‘itai–itai’ disease. Some correlations were suggested between cadmium levels and
the age-adjusted prostate or breast cancer rates distributed in the European countries under study. 相似文献
953.
Anne-Marie Boulay Christian Bouchard Cecile Bulle Louise Deschênes Manuele Margni 《Mitigation and Adaptation Strategies for Global Change》2002,7(4):417-418
Subject Index
Subject Index 相似文献954.
Line Dahl Jeppesen Dorte Launholt Lildballe Lotte Hatt Jakob Hedegaard Ripudaman Singh Christian Liebst Frisk Toft Palle Schelde Anders Sune Pedersen Michael Knudsen Ida Vogel 《黑龙江环境通报》2023,43(1):3-13