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    Wyświetlanie 1-4 z 4
    Tytuł:
    Kinetics and thermodynamics of gossypol extraction from defatted cottonseed meal by ethanol
    Autorzy:
    Devesh, K. S.
    Sharma, S. K.
    Sambi, S. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/779714.pdf
    Data publikacji:
    2012
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    gossypol
    bawełna
    nasiona
    ekstrakcja
    jedzenie
    kinetyka
    termodynamika
    cottonseed
    extraction
    food
    kinetics
    thermodynamics
    Opis:
    Gossypol is polyphenolic aldehyde, a toxic substance naturally present in cotton plant to protect it from insects, pests and diseases. Maximum gossypol is concentrated in the seed. After extraction of oil from the cottonseed, the defatted cottonseed meal which contains both the gossypol and proteinous matter is left behind. A number of attempts have been made using different solvents to extract gossypol from the seeds. However, all these efforts have remained in the realm of academic activity only as none of them could be commercialized. If a pilot plant or commercial scale plant is to be developed then the data on the kinetics and thermodynamics of the extraction process is required. In this study ethanol has been used as the solvent at temperature below 323K for removal of gossypol from the defatted seed. This study finds the effects of parameters viz. temperature, solvent to solid ratio (SR) and extraction time on the gossypol extraction efficiency. The data obtained are used to establish the kinetics and thermodynamics of the extraction process.
    Źródło:
    Polish Journal of Chemical Technology; 2012, 14, 2; 29-34
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on the Method for Determining the Interaction of Cotton With the Working Bodies of Cotton Gins
    Autorzy:
    Sailov, Rahib Aqaqul
    Powiązania:
    https://bibliotekanauki.pl/articles/2200751.pdf
    Data publikacji:
    2022
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    fibre damage
    cottonseed
    sound speed
    cleaning process
    cotton raw material
    Opis:
    A theoretical regularity of the general behaviour of raw cotton as a porous medium in the technological processes of its mechanical processing has been substantiated for the first time. The speed of sound in a porous cotton medium has now been determined. The effect of additional force stresses inside the cotton medium caused by the filtration of the air component from cotton raw materials during the introduction of the working body, has been disclosed. A generalized equation that describes the force stress in a cotton medium when exposed to a variety of shapes of working bodies of cotton machines has been worked out. A method for calculating the damage to seeds and cotton fibers caused by their interactions with the working bodies of processing machines has been proposed. The resultant theory that describes the stress state of cotton raw materials during processing allows us to use it practically to solve all important issues pertaining to the damage of fiber and cotton seeds that occur by using technological solutions in primary processing of cotton operations.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2022, 6 (151); 74--79
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the Process of Separation of Fibers From Seeds During Roll Ginning
    Autorzy:
    Sailov, Rahib Aqaqul
    Powiązania:
    https://bibliotekanauki.pl/articles/24200949.pdf
    Data publikacji:
    2023
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    knife drum
    cottonseed
    fibre strand
    coefficient of elasticity
    roller gin
    Opis:
    In the initial position in the process of roll ginning, the seed is drawn to the slot of the contact gap of the knife-drum due to the tension of the fibers. Subsequently, the seed is struck with a certain impulse. The separation of the fibers from the seed after the impact of the beater occurs sequentially, not simultaneously. As a result of theoretical and experimental studies, the optimum frequency of the shock pulse on the seed (f = 18-20) was found to be the most technologically successful in terms of providing the best quality indicators of seeds and fibers. Beating in the resonance mode allows to reduce the magnitude of the shock impulse on the seed, leading to a reduction in the degree of damage to the seeds. At this moment, the seeds at the end of the strand move only under the action of an elastic restoring force. The active part of the fiber bundle section in a dynamic process can be as little as 0.001 or less. The average value of the compliance coefficient for the raw cotton variety BA-440 was determined experimentally. This allowed to determine the stiffness coefficient of the volatiles indirectly. According to the parameters obtained, the dynamic state of the system practically falls into the region of parametric resonance, where the motion is unstable. This means that the damaged seeds at the end of the strand enlarge significantly after the impact of the beater, causing the seeds to separate from the fibers.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2023, 31, 1; 91--94
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental emissions and efficiency of a direct injection diesel engine fueled with various fatty acid methyl esters
    Autorzy:
    Sairam, K.
    Gopinath, A.
    Velraj, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/207516.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    direct injection
    brakes
    carbon monoxide
    cottonseed oil
    diesel engines
    efficiency
    engines
    fatty acids
    fuels
    direct injection diesel engines
    environmental emissions
    exhaust gas temperature
    fatty acid methyl ester
    wtrysk bezpośredni
    hamulce
    tlenek węgla
    olej z nasion bawełny
    silniki wysokoprężne
    wydajność
    silniki
    estryfikacja
    estry
    kwasy tłuszczowe
    zużycie paliwa
    paliwa
    emisje gazów
    silniki wysokoprężne z wtryskiem bezpośrednim
    estry metylowe kwasów tłuszczowych
    Opis:
    Environmental emissions and efficiency of a direct injection diesel engine fueled with fatty acid methyl esters (FAMEs) have been experimentally investigated and compared with petro-diesel. Rubber seed oil methyl ester, cotton seed oil methyl ester, neem oil methyl ester, and mahua oil methyl ester were used as fuels. The brake specific fuel consumption, brake thermal efficiency, and exhaust gas temperature, nitrogen oxides, carbon monoxide, hydrocarbons, and smoke emissions were investigated. Mahua oil methyl ester exhibits higher brake thermal efficiency compared to other FAMEs. The NOx was found to be higher, while CO, HC, and smoke emissions of rubber seed oil methyl ester were lower than the other fuels at all loads.
    Źródło:
    Environment Protection Engineering; 2015, 41, 1; 125-135
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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