Autor: Otremba, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ocean optics in application to remote detection of an oil-in-water emulsion originating from the engine room
Autorzy:: Otremba, Z.
Rudź, K.
Powiązania:: https://bibliotekanauki.pl/articles/247417.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: environmental protection
oil pollution
engine room
ocean optics
Monte Carlo modelling
Opis:: Relatively great number of detected and confirmed oil spillages in the Polish marine areas reveals that discharge of oil substances from any one of a large number of ships to the marine environment is real in any time. Surface oil contamination can be easily detected by satellite or airborne radar techniąues, but unfortunately oil dispersed in the bulk of water cannot be detected at the present. Discharge waters usually contain small amounts ofoil substances in the form of dispersed droplets (emulsion). It is revealed that oil emulsion cause measurable changes in the optical properties of seawater. In practice, detection of changes of these properties should be possible by the standard radiance or irradiance reflectance meter. This paper presents a computed photon trace simulation applied to the marine environment polluted by oil-in-water emulsion. Model of marine area consists ofwhether conditions, sun elevation, sea depth, optical properties of seawater related to various transparency/turbidity: from clean oceanic waters to turbid coastal seawater (as water from Gulf of Gdańsk is). Model of oil pollution is represented by oil droplets size distribution and by spectra of both attenuation-coefficient and refraction-coefficient related to two optically absolutely different kinds of oil. It is revealed that the values of irradiance reflectance are significantly differ for the clean sea area in relation to the polluted one, even for small amounts of engine-room origin oil pollution.
Źródło:: Journal of KONES; 2010, 17, 3; 349-353
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Comparison of nonwoven fabrics in terms of usefulness for oil spill combat
Autorzy:: Kończewicz, W.
Otremba, Z.
Sałek, K.
Walaszkowska, N.
Powiązania:: https://bibliotekanauki.pl/articles/244169.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: oil spill combat
sorbents
nonwoven fabrics
Opis:: The petroleum substances (oil) spilled on the hard surface can be easily neutralized and collected by using powdery or granular sorbents. We are dealing with more difficult situation when oil spill appears on the soft ground or on the surface of the water. Extremely difficult is removing the oil from body of water polluted by dispersed one. In such cases useful are various balls, sleeves and mats filled by nonwovens. It is important to identify a material, which strongly absorbs different type of oil in a wide temperature range. At the same time, such material should have physical properties allowing easy and rapid contact with the spilled oil and then its removal from the environment. This paper provides an overview of impregnability of nonwoven fabrics made from two materials – polypropylene and cotton. The impregnability was tested against the water and the used lubricate oil. The tests were carried out by using experimental device constructed by members of the student’s scientific society at Faculty of Marine Engineering (Gdynia Maritime University). Principle of construction of testing device takes into account aspect of placing the sorbent in the package as well as possibility of repeating the experiment in precisely defined measurement conditions. Among tested materials, the best in terms of oil sorptivity proved to be polypropylene. The same material was the least absorbing water. It can therefore be assumed that this material is the most suitable for removing oil from the polluted water.
Źródło:: Journal of KONES; 2015, 22, 3; 99-103
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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