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Wei Shiqiang; Lindqvist, O.; Xiao Zifan; Mou Shusen; Qing Changle
Proceedings of the 10th world clean air congress. Emissions and control1995
Proceedings of the 10th world clean air congress. Emissions and control1995
AbstractAbstract
[en] The anthropogenic emissions of mercury to air is considered to contribute by 50-75 % of the total, and is thus responsible for elevated mercury concentration in the global atmosphere. These elevated atmospheric levels may be a serious threat to terrestrial and aquatic ecosystems due to wet or dry deposition. Hence, measures must be taken in controlling the anthropogenic emissions of mercury. A fundamental step of a global mercury control is realistic mapping of anthropogenic and natural emissions. Today, reasonably well documented mercury emission inventories of anthropogenic point sources exist in Europe and North America. The amount of anthropogenic emissions in other parts of the world is quite uncertain, as well as world-wide diffuse emissions (anthropogenic and natural). Guizhou is situated on a plateau with a mean altitude of about 1000 m. Its climate is a typical subtropical humid monsoon with an average annual temperature of 15 dec C and a precipitation of 1100-1400 mm. The province accounts for about 2.8% of the total population in China. (orig.)
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Tolvanen, M.; Anttila, P.; Kaemaeri, J. (eds.); Finnish Air Pollution Prevention Society, Helsinki (Finland); 442 p; ISBN 952-90-6472-1;
; 1995; [4 p.]; 10. world clean air congress; Espoo (Finland); 28 May - 2 Jun 1995; Available from Finnish Air Pollution Prevention Society (Ilmansuojeluyholistys ry), P.O. Box 335, 00131 Helsinki, Finland

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Koehler, J.; Peichl, L.; Dumler-Gradl, R.; Thoma, H.; Vierle, O.
Reports from the Bavarian State Agency for Environmental Protection (6). Technical reports. Information from LfU1994
Reports from the Bavarian State Agency for Environmental Protection (6). Technical reports. Information from LfU1994
AbstractAbstract
[en] Short communication
Original Title
Der PCDD/F-Gehalt in Fichtennadeln vor und nach der winterlichen Heizperiode. Abklaerung des Einflusses von Hausbrand
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Bayerisches Landesamt fuer Umweltschutz, Muenchen (Germany); Schriftenreihe des Bayerischen Landesamtes fuer Umweltschutz; v. 126; 210 p; 1994; p. 171-173; ISSN 0723-0028;
; Available from FIZ Karlsruhe

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AbstractAbstract
[en] The emission of sulfurous gases including SO2 from stationary power generation remains to be a serious environmental and ecological problem. Sulfurous gases are almost entirely produced from the combustion of sulfur-containing fuels. While fuel desulfurization and flue gas scrubbing is a viable solution, in the developing countries it remains to be an economical challenge to implement these SOx reduction technologies. The oxidation of methane in presence of sulfurous gas (SO2) addition was studied experimentally. Te experiments were conducted in a static reactor at temperature of 728-786 K, and for mixture of C4/O2 ≡ 1/2 at a pressure of 117 Torr with varying amount of SO2 addition. It was observed that SO2 addition accelerated the oxidation process, reduced the induction period and increased the extent of methane consumption. At the relatively short resident time (less than 50 sec) SO3 was detected, but at longer residence time SO3 was reduced spontaneously to SO2
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Available from National Academy of Sciences of Armenia; 39 refs, 7 figs, 1 tab
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[en] During the last twenty years, wide studies on dioxins and furans, the micropollutants responsible of toxic effects towards human health and ecotoxicity, have been performed. State of the art concerning the principal sources of emission, in particular the industrial sources, as well as the homogeneous and heterogeneous mechanisms of formation from the main recognized precursors, is presented. Emphasis is done to problems arising from combustion processes
[it]
Alla luce dei vasti studi realizzati nell'ultimo ventennio su diossine e furani, responsabili di tossicita' ed ecotossicita', ne viene riportato lo stato dell'arte delle conoscenze prendendo dapprima in esame le principali fonti di emissione, con particolare riferimento alle fonti industriali, e successivamente i meccanismi di formazione in fase omogenea ed eterogenea a partire dai principali precursori individuati, con particolare riferimento ai processi di combustioneOriginal Title
I problemi creati da diossine e furani 1. Sorgenti e meccanismi di formazione
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[en] A charge on NOx emissions from energy production at stationary combustion units was introduced in Sweden 1992. The main reason for reducing NOx emissions was to combat acidification. In 2001 the charge covered some 250 combustion facilities, with a total of just under 400 production units for electricity and heat production, having emissions of just over 14,000 tonnes of nitrogen oxides. Specific emissions from the plants subject to the charge have fallen by around 40 per cent since it was introduced. The charge is paid on emissions of nitrogen oxides (NOx) from boilers, stationary combustion engines and gas turbines having a recorded useful energy production of at least 25 GWh a year. Production units generating steam, hot water, warm water, or hot oil are subject to the charge, as are gas turbines and stationary combustion engines. Liability to the charge also presupposes that the energy generated is used to heat buildings, electricity generation or in industrial processes. Emissions from direct process combustion, eg, combustion in furnaces for direct heating and melting of raw materials and intermediate products, are not covered by the charge system. Also exempt are recovery boilers and sulphite liquor boilers in the pulp and paper industry. The charge is SEK 40 per kilo of emitted nitrogen oxides (NOx), calculated as nitrogen dioxide (NO2), regardless of the fuel used. The total NOx charge is repaid to the charge payers in proportion to each production unit's share of total useful energy production. Sweden is committed to achieving an emissions target of 148,000 tonnes of nitrogen oxides to air by 2010 under the EC Air Quality Directive (NEC). This would mean a reduction of about 56 per cent compared with the level in 1990. NOx emissions in Sweden were approximately 250,000 tonnes in 2001. On the basis of instruments already decided, annual NOx emissions are expected to fall to 160,000 tonnes by 2010. Most of this reduction is expected to come from automobiles and machines as a consequence of more stringent exhaust standards. It may therefore be considered reasonable for part of the additional emission reduction needed to reach the emission target to come from stationary emission sources such as energy production and industrial processes. Studies have shown that the NOx charge system is a cost-effective complement to emission permit conditions. In relation to the quantity of energy produced, emissions from plants subject to the charge have fallen by about 40 per cent since the charge was introduced. At the current level and scope of the charge, emissions will remain low and will also continue to fall by around one per cent a year. The charge also influences investment in new production units and conversion of existing ones. It has also had an impact in encouraging the development of better technologies for emission reduction and continual monitoring of emissions. To achieve a cost-effective reduction in emissions of nitrogen oxides using the NOx charge system, the Swedish EPA proposes that: the charge system be expanded to cover recovery boilers and sulphite liquor boilers used in the pulp and paper industry; the charge system be expanded to cover combustion in industrial processes; the threshold for liability to the charge should be retained at 25 GWh per year; the charge should be raised to SEK 50 during an initial phase; and an evaluation of the effect of expanding the NOx charge system and raising the charge should be carried out two years after the change has taken effect. At that time a further increase in the level of the charge should be considered on the basis of the evaluation. It is not certain whether the financial consequences of the environmental charge may be unduly onerous for certain plants in relation to the emission reductions that can be expected. The Swedish EPA considers that this particularly applies to the cement industry, the lime industry, the mining industry, the glass industry and the fibreboard and chipboard manufacturing industry. For example, the cement industry and the mining industry would have to pay a net charge in the region of SEK 70-100 million per year assuming a charge of SEK 50. However, it should be stressed that the actual outcome depends on the action the plants in question are able to take to reduce their emissions. The cement industry has taken extensive measures to reduce NOx emissions from cement kilns, and the scope for further emissions reductions is considered to be very limited. The Swedish EPA therefore considers it reasonable to exempt the cement industry from the charge. The Swedish EPA proposes that tradable emission rights for nitrogen oxides should not be introduced at present. The possibility of replacing the NOx charge system with a trading system should be considered once trading schemes for nitrogen oxides have been introduced in other countries and the introduction of the carbon dioxide emission rights trading scheme in Sweden has been evaluated. The Agency sees no theoretical obstacles to introducing a system of tradable emission rights as an alternative to the NOx charge system. However, complementing the NOx charge system with a trading scheme for emission sources other than those currently covered by the NOx charge is not considered an effective option. International regulations such as the IPCC Directive may present certain obstacles to an effective market. Amendment of the IPPC Directive as has already been done to facilitate the EU system of trading in greenhouse gas emission rights, would make for a more effective market in tradable emission rights
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Foerslag foer kostnadseffektiv minskning av kvaeveoxidutslaepp. Kvaeveoxidavgift och handelssystem foer utslaeppsraetter
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Mar 2004; 130 p; ISSN 0282-7298;
; ISBN 91-620-5356-6;
; Available from: Swedish Environmental Protection Agency, Kundservice, SE-106 48 Stockholm, Sweden, or http://www.naturvardsverket.se/bokhandeln/; 31 refs., 31 figs., 34 tabs


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Dumler-Gradl, R.; Koehler, J.; Peichl, L.; Thoma, H.; Vierle, O.
Reports from the Bavarian State Agency for Environmental Protection (6). Technical reports. Information from LfU1994
Reports from the Bavarian State Agency for Environmental Protection (6). Technical reports. Information from LfU1994
AbstractAbstract
[en] Short communication
Original Title
PCDD/F-Konzentrationen im Kaminruss und Asche bei der Holzfeuerung in Hausfeuerungsanlagen und PCDD/F Konzentrationen in Fichtennadeln
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Bayerisches Landesamt fuer Umweltschutz, Muenchen (Germany); Schriftenreihe des Bayerischen Landesamtes fuer Umweltschutz; v. 126; 210 p; 1994; p. 173-175; ISSN 0723-0028;
; Available from FIZ Karlsruhe

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AbstractAbstract
[en] The pollutant emission of the thermal power stations may have an important contribution to the local pollution as well as to regional (transfrontier) and global pollution. Due to the impossibility at present of making continuous monitoring of the emission of pollutants it is necessary to use computational models for obtaining inventories of the pollutant sources and for studying their dispersion into atmosphere. The computational code used to simulate the pollutant diffusion in the atmosphere is a climatologic model giving the annual average concentration and the evaluation of the maximum SO2 concentration. The paper presents the analyses for the case of 14 thermal power stations of Romania
Original Title
Les centrales electriques vues comme une source de pollution locale et transfrontiere
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Mihail, C.; Iliescu, A. (ICEMENERG, Bd. Energeticienilor nr. 8, sector 3, 79619 Bucharest, (Romania)); 251 p; Jun 1994; p. 177-183; National Energy Conference. Towards a Sustainable Energy Efficiency in Romania; Neptun (Romania); 13-16 Jun 1994; Available from ICEMENERG, Bd. Energeticienilor nr. 8, sector 3, 79619 Bucharest, (RO) and Institute for Power Studies and Design, P.O.Box MG-6, R-76900 Bucharest, (RO); Section I. Energy Policies, Energy Conservation and Environmental Impact.
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AbstractAbstract
[en] It is well known that the radiation effect of nuclear enterprises on the environment is due mainly to gas-aerosol emissions which emanate from the object in the form of a jet flow. A characteristic feature of the propagation of radioactive impurities near such structures is that they depend on the local thermal and wind conditions at the location of the source of contamination. Transferring directly the results of laboratory investigations of the propagation and diffusion of fluxes to objects in the environment and neglecting the peculiarities of the wind and thermal interference with the underlying surface and other buildings can lead to incorrect conclusions. In this paper, we examine two examples: (1) emissions through the plant stack or other ventilation system openings, and (2) leakage of radioactive pollutants into the reactor building and from there to the atmosphere. A mathematical description on each example is provided, and data on the Archimedes number for a convective jet is given as a function of the deflecting wind velocity
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Translated from Atomnaya Energiya; 78: No. 3, 191-195(Mar 1995).
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Knoflacher, H.M.; Loibl, W.; Medwedeff, A.
Oesterreichisches Forschungszentrum Seibersdorf GmbH (Austria)1995
Oesterreichisches Forschungszentrum Seibersdorf GmbH (Austria)1995
AbstractAbstract
[en] This project is one of Austria's contributions to international efforts within the framework for the target oriented reductions of sulfur- and nitrogen emissions. Within the project the critical loads of sulfur and nitrogen for forest soils, bogs and alpine ecosystems of Austria were calculated. For more than 11,000 reference areas the critical loads were calculated with a steady state mass balance model. It can be derived from the results that large areas of Austria are covered by ecosystems sensitive to acidification and eutrophication. In comparison with deposition calculations it can guessed that the highest risk can also exists in specific areas with lower sensitivities. (author)
Original Title
Berechnung der Critical Loads-Karten fuer Oesterreich
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Dec 1995; 40 p; Available from Austrian Research Centre Seibersdorf, Abteilung Umweltplanung (AT)
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Rosland, A.
Statens Forurensningstilsyn, Oslo (Norway)1993
Statens Forurensningstilsyn, Oslo (Norway)1993
AbstractAbstract
[en] The report gives an overview of Norwegian emissions that may contribute to global climatic changes, regional acidification problems and local air pollution problems. Included in these emissions are carbon dioxide, methane, dinitrous oxide, sulfur dioxide, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide, particulates and lead. Detailed figures are given for 1991 as well as a description of the development in the period 1973-1992. The development of the amount of emissions is compared with existing international agreement and national goals
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Utslipp til luft i Norge. Rapport om status og utvikling
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May 1993; 13 p; ISBN 82-7655-127-0;
; Also available from OSTI as DE95717544; NTIS

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