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Emisje ditlenku siarki z kotłów fluidalnych przy rozruchu

100%

Buryan P. , Vejvoda J. , Donat P.

Karbo

2010

tom Nr 3

141-145

Podczas uruchamiania kotłów fluidalnych do eksploatacji występuje duże stężenie ditlenku siarki (ponad 2400 mg/m3) i przekraczana jest prawidłowa wartość emisji 400 mg/m3 (273 K, 101,32 kPa, 6 % tlenu, suchy). Gdy węgiel i wapień są wprowadzane do kotłów, te niedopuszczalne stężenia ditlenku siarki znacznie spadają, dając w efekcie pożądaną wartość emisji.

During start-up of circulated FBC (fluidized bed combustion) boilers into operation high concentration of sulphur dioxide occur ( above 2400 mg/m3) and the valid emission limit value 400 mg/m3 (273 K, 101.32 kPa, 6 % oxygen, dry) is exceeded. When coal and limestone are fed into the boiler, these unacceptable levels of sulfur dioxide fell significantly, resulting in the desired value of the emissions values.

CO2 capture and storage (CCS) by means of coal combustion products of fluidised-bed boilers

100%

Buryan P. , Donat P. , Buryan S.

Inżynieria Mineralna

2015

tom R. 16, nr 1

93--96

Through a one-year monitoring of the coal combustion products (CCP) coming from the Tisová Power Plant, using lime for the desulphurisation of the combustion gases from fluidised-bed boilers burning lignite from Sokolovská uhelná, a.s., it was conclusively proved that these coal combustion products significantly absorb carbon dioxide from the atmosphere during free deposition. Nevertheless, this irreversible sorption of carbon dioxide is not included in monitoring plans for reporting CO2 emissions of any power plant, or in the plans for CO2 stratification.

Po roku obserwacji produktów spalania węgla pochodzącego z elektrowni Tisová, używając wapna do odsiarczania gazów spalania lignitu, w kotle ze złożem fluidalnym, który pochodził z Sokolovskáuhelná, a.s., ostatecznie udowodniono, że te produkty spalania węgla znacząco wchłaniają dwutlenek węgla z atmosfery w trakcie swobodnego osadzania. Niemniej jednak, ta nieodwracalna sorpcja dwutlenku węgla nie została zawarta w planach obserwacyjnych zawiadamiania o poziomie emisji CO2 w żadnej z elektrowni, lub w planach stratyfikacji CO2.

Environmental-dependent proline accumulation in plants living on gypsum soils

63%

Boscaiu M. , Bautista I. , Lidon A. , Llinares J. , Lull C. , Donat P. , Mayoral O. , Vincente O.

Acta Physiologiae Plantarum

2013

tom 35

nr 07

Biosynthesis of proline—or other compatible solutes—is a conserved response of all organisms to different abiotic stress conditions leading to cellular dehydration. However, the biological relevance of this reaction for plant stress tolerance mechanisms remains largely unknown, since there are very few available data on proline levels in stress-tolerant plants under natural conditions. The aim of this work was to establish the relationship between proline levels and different environmental stress factors in plants living on gypsum soils. During the 2-year study (2009–2010), soil parameters and climatic data were monitored, and proline contents were determined, in six successive samplings, in ten taxa present in selected experimental plots, three in a gypsum area and one in a semiarid zone, both located in the province of Valencia, in south-east Spain. Mean proline values varied significantly between species; however, seasonal variations within species were in many cases even wider, with the most extreme differences registered in Helianthemum syriacum (almost 30 μmol g-1 of DW in summer 2009, as compared to ca. 0.5 in spring, in one of the plots of the gypsum zone). Higher proline contents in plants were generally observed under lower soil humidity conditions, especially in the 2009 summer sampling preceded by a severe drought period. Our results clearly show a positive correlation between the degree of environmental stress and the proline level in most of the taxa included in this study, supporting a functional role of proline in stress tolerance mechanisms of plants adapted to gypsum. However, the main trigger of proline biosynthesis in this type of habitat, as in arid or semiarid zones, is water deficit, while the component of ‘salt stress’ due to the presence of gypsum in the soil only plays a secondary role.