Wyniki wyszukiwania - BazTech

1

Zastosowanie wodorowego gazu otrzymanego w wyniku kwaśnej fermentacji melasy z przemysłu cukrowniczego do zasilania ogniwa paliwowego

Piela P., Tokarz W., Kaźmierczak W., Detman A., Sikora A., Piotrowski J.

Przemysł Chemiczny

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2016

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T. 95, nr 5

993--999

PL

Przedstawiono wyniki badań działania ogniwa paliwowego z elektrolitem polimerowym zasilanego powietrzem oraz gazem wodorowym pochodzącym z fermentacji melasy, produktu ubocznego przemysłu cukrowniczego. Sprawdzono wydajność konwersji energii w ogniwie w różnych warunkach, także odpowiadających minimalnym nakładom energetycznym na przygotowanie reagentów, tzn. bez wstępnego oczyszczania wodorowego gazu fermentacyjnego, przy wolnym przepływie powietrza, a także bez stosowania sprężania reagentów i w niskiej temperaturze pracy.

EN

Polymer electrolyte membrane fuel cell was supplied with air and a H2-rich gas obtained by microbial fermentation of molasses from the sugar industry. The energy conversion performance in the fuel cell was examd. under various conditions, including minimum energy input necessary for the prepn. of the gaseous reagents (without pre-cleaning of the fermentation gas, at low airflow, without pressurizing the reagents, and at low fuel cell temp.). The H2 conversion degree was near 100% but decreased even down to 40% during the fuel cell operation time because of flooding of the anode.

2

The Stebnyk Formation (Miocene) in the Boryslav-Pokuttya and Sambir nappes of the Ukrainian Carpathians: a record of environmental change in the Carpathian Foredeep

Oszczypko N., Uchman A., Bubniak I.

Geological Quarterly

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2016

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Vol. 60, No. 2

473--492

EN

The late Early–Middle Miocene Stebnyk Formation is a ~600–2000 m thick unit of the Boryslav-Pokuttya and Sambir nappes, which contains a molasse succession of the Carpathian Foredeep incorporated within the marginal part of the Outer Eastern Carpathian accretionary wedge. In the valley of thePrutRiver, between Deliatyn and Lanchyn, the Stebnyk Formation covers the alluvial fan deposits of the Sloboda Conglomerate and the deltaic deposits of the Dobrotiv Formation in the south, and the lagoonal salty clays of the Vorotyscha Formation in the north. The Stebnyk Formation is built of mainly rose, greenish and grey calcareous mudstones intercalated with several variable sandstone beds, including thick-bedded packages. The occurrence of tetrapod footprints and raindrop imprints, as well as the overall red-be character prove prevailing continental conditions during deposition of the formation, which is interpreted as sediments of a delta plain with distributary channels filled by the thick sandstone beds and associated by intercalations of thinner beds referred to channel levees and crevasse splays. The upper part of the Stebnyk Formation contains marine microfossils of the NN4 Zone, and locally to the NN5 Zone, corresponding to the early Badenian transgression in the region. In the regional scale, the Stebnyk Formation shows a polarity of facies, with a high contribution of conglomerates and thick-bedded sandstones in the lower part in the north west and fining to the south east, with transportation from the west and north west. The sediments accumulated in an elongated subsiding zone between the rising Carpathian orogen and the forebulge elevation of the foreland, in a warm and semi-dry climatic conditions corresponding roughly to the Mid-Miocene Climatic Optimum. The accumulation was balanced by a subsidence caused by sinking of the platform slab and by sedimentary loading.

3

The Dobrotiv Formation (Miocene) in the Boryslav-Pokuttya and Sambir nappes of the Ukrainian Carpathians : a record of sedimentary environmental change in the development of the Carpathian Foredeep Basin

Oszczypko N., Uchman A., Bubniak I.

Geological Quarterly

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2014

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Vol. 58, No. 3

393--408

EN

The late Early Miocene Dobrotiv Formation, a 700–800-m-thick unit, was deposited in a subsiding platform margin, which become involved in the marginal part of the Outer Eastern Carpathian accretionary wedge. The sedimentary succession from the Sloboda Conglomerate up to the Dobrotiv Formation records a transition from alluvial fan through fan-delta to deltaic deposits, followed by the fluvial plain-channel facies of the Stebnyk Formation. The deltaic deposits are mud-dominated, with poorly developed thickening-up packets of beds. Efficient sediment accumulation was balanced by subsidence caused by subsurface loading. Emerged parts of the deltaic sedimentary system include tetrapod footprints and raindrop imprints. The general absence of mudcracks in the Dobrotiv Formation suggests a humid climate. Deposits of the Sloboda, Dobrotiv and Stebnyk formations form fining- and thinning-upwards clastic wedge successions along the Ukrainian Carpathians.

4

Foreland provenance of thick conglomerates in the early stage of the Carpathian Foredeep development : the case of the Sloboda Conglomerate (Lower Miocene), western Ukraine

Oszczypko N., Uchman A., Bubniak I.

Geological Quarterly

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2012

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Vol. 56, No. 4

789--802

EN

The upper part of the Lower Miocene Sloboda Conglomerate, a 250–1400 m thick unit, was deposited mainly on an alluvial fan and fan delta during the early stages of Carpathian Foredeep development. During of the Old Styrian overthrust movements of the Carpathian orogen, a forebulge was formed, which supplied clasts to the conglomerate. The clasts are dominated by Late Proterozoic–Early Cambrian phyllites, while Paleozoic carbonates are common, and Mesozoic and other rocks are rare. The source area formed mainly by a prolongation of the Małopolska Massif that was involved in the forebulge; this was located close to a palaeovalley cut into Mesozoic and Paleozoic rocks, buried under younger strata. Additional material was derived from the advancing front of the Carpathian Flysch nappes.

5

Briquetting of Iran-Angouran smithsonite fines

Özbayoglu G., Tabari K. R.

Physicochemical Problems of Mineral Processing

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2003

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Vol. 37

115-122

EN

In conventional zinc carbonate ore processing, crushed ore is charged to Waelz furnace for the recovery of zinc through volatilization. When the feed size is fine which does not meet the requirements, briquetting is employed to convert the fines and dusts into chargable lumps. The aim of this research was to determine the possibility of briquetting of Iran-Angouran zinc carbonate fines produced in Dandi concentration plant. During the briquetting test, the effects of pressure, type and amount of binder, moisture, temperature, and fineness of the feed were determined. The quality of briquette was controlled in terms of the compressive strength, abrasion index and resistance to weathering. The optimum briquetting result was obtained when the zinc carbonate fines was mixed with 6% water, 5% molasses and 1.5% lime at a briquetting pressure of 200 kg/cm2 and drying at 105°C for 2 hours.

PL

Rudę zawierającą węglan cynku przerabia się w sposób tradycyjny w piecu Waelza, w celu odzysku cynku w wyniku procesu rozkładu termicznego. W przypadku, gdy nadawę do procesu stanowią drobne ziarna, musi być zastosowany proces brykietowania drobnych ziarn. Celem pracy było określenie warunków fizykochemicznych brykietowania drobnych ziarn węglanu cynku ze złoża Angouran w Iranie, które przerabiane są w zakładzie wzbogacania Dandi. W trakcie prowadzonych doświadczeń, badano wpływ ciśnienia, ilości cieczy mostkującej, wilgoci, temperatury i wielkości ziaren na proces brykietowania. Optymalne warunki brykietowania otrzymano, gdy drobne ziarna węglanu cynku były mieszane z 6% wody, 5% melasy oraz 1.5% wapna. Ciśnienie zastosowane do brykietowania wynosiło 200kg/cm2, a temperatura suszenia 1050C przez okres 2 godzin.

6

Fluvial sedimentology of the Biały Kamień Formation (Upper Carboniferous, Sudetes, Poland)

Kurowski L.

Geologia Sudetica

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1998

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Vol. 31, nr 1

69-77

EN

The Biały Kamień Formation (Namurian B-C) is part of a molasse sequence deposited in the post-Variscan Intra-Sudetic basin. The formation differs from the adjacent deposits by its coarse-grained nature and possession of fining-up cycles, consistent with deposition in a braided gravel-bed river (GII and GIII facies of Miall's 1978 classification). Fine-grained sediments and coal seams are present in the upper part of the formation. The cyclicity mostly seems to reflect autocyclic depositional mechanisms within the tectonically controlled Intra-Sudetic molasse basin.