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    Wyświetlanie 1-5 z 5
    Tytuł:
    Biopolymers based paper coating with promoted grease resistivity, bio-degradable and mechanical properties
    Autorzy:
    Wenelska, Karolina
    Kędzierski, Tomasz
    Maslana, Klaudia
    Sielicki, Krzysztof
    Dymerska, Anna
    Janusz, Joanna
    Marianczyk, Grzegorz
    Gorgon-Kuza, Aleksandra
    Bogdan, Wojciech
    Mijowska, Ewa
    Powiązania:
    https://bibliotekanauki.pl/articles/27315633.pdf
    Data publikacji:
    2023
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    paper
    grease resistance
    lamination
    Opis:
    The dominance of plastics in the packaging market is due to their low weight and thickness, which save transportation costs. However, their non-biodegradability poses a significant threat to the environment. Paper, on the other hand, is considered as a safer alternative due to its natural composition and biodegradability. The porous structure of paper limits its application in packaging, and its poor water resistance further restricts its use in humid environments. Therefore, lamination is a method useful tool to improve the barrier properties of paper. Additionally, the researchers are focusing on developing biodegradable and water-based coatings with anti-fat properties as a green alternative to plastic packaging. The impact of a new grease-resistant coating composed of starch, gelatin and sodium alginate on the mechanical properties of paper was investigated through tensile, tearing, and bursting strength tests. The results showed significant improvements in the mechanical properties of the coated paper sheets. Furthermore, the biodegradability test indicated that the paper samples coated with the new composition showed a 50% weight loss after one week of incubation in the soil, and after three weeks, they exhibited 100% weightloss, demonstrating their outstanding biodegradability.
    Źródło:
    Polish Journal of Chemical Technology; 2023, 25, 2; 66--71
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of chemical aids in the process of deinking sludge thickening
    Autorzy:
    Czechowski, J.
    Olejnik, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/778705.pdf
    Data publikacji:
    2007
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    papier
    makulatura
    środki retencyjne
    odpady
    osad
    recykling
    paper
    recovered paper
    retention agents
    waste
    sludge
    recycling
    Opis:
    The authors have analyzed a modern technological line of the latest chemicals for the recovered paper processing and de-inking in terms of reducing the amount of wastes arising during the production. The authors have also investigated the effectiveness of selected chemical aids (coagulants and flocculants) supporting the process of sludge dewatering. 12 different types of flocculants were tested. The best chemical agent was selected as well as its optimal dosage. The highest dynamics of sludge dewatering improvement (expressed by the dewatering time under standard conditions) was observed with the ECR3 agent dosage of 6 - 6.5 kg per tonne of the absolutely dry sludge. Long-term analyses of the tested line have proved that the retention aid and its dosage were selected correctly.
    Źródło:
    Polish Journal of Chemical Technology; 2007, 9, 4; 121-123
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the effects on ink colour of lacquer coating applied to the printed substrate in the electrophotographic printing system
    Autorzy:
    Sönmez, Sinan
    Arslan, Serra
    Powiązania:
    https://bibliotekanauki.pl/articles/1849309.pdf
    Data publikacji:
    2021
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Lacquer
    Gloss
    Printing
    Paper
    Electrophotography
    Opis:
    In this study, the effects of the lacquer applied to the printing materials which were printed by electrophotographic printing method on printing quality were investigated. In practice, printing materials with the same weight and different optical properties were used and the study was carried out in three stages. The optical and physical properties of the printing materials used in the fi rst part were determined, in the second part, the printing of these materials by electrophotographic printing method and printability tests were performed. In the third chapter, matte and glossy lacquers were applied to these printed materials and printability tests were repeated. As a result of the study, it was observed that the application of gloss and matte lacquer caused a decrease in the printing density values and also the application of matte lacquer caused a decrease in the gloss values.
    Źródło:
    Polish Journal of Chemical Technology; 2021, 23, 2; 35-40
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of waters environment hazard by pulp-mill liquors
    Autorzy:
    Lewkiewicz-Małysa, A.
    Konopka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/779476.pdf
    Data publikacji:
    2008
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    odpady z celulozowni
    samooczyszczanie wody
    chemical paper-pulp waste
    pulp-mill waste
    BAT
    self-cleaning of waters
    Opis:
    Pulp-mill waste is very noxious for the primary wood production. The problems of its manageability are correlated with its volume and a considerable degree of pollutions, mainly the organic ones, coming from wood processing. The other main components of waste material are aggressive reagents liberating the cellulose fibers, during washing, classification and the benediction processes. The results of environmental studies covering the superficial water of the pulp-mill impact were presented. The production process factors were assessed owing to the waste concentration and distribution in the water race.
    Źródło:
    Polish Journal of Chemical Technology; 2008, 10, 4; 15-19
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    COD reduction studies of paper mill effluent using a batch recirculation electrochemical method
    Autorzy:
    Kannadasan, T.
    Sivakumar, V.
    Ahmed Basha, C.
    Parwate, A. V.
    Senthilkumar, K.
    Kannan, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/778894.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    oczyszczalnia ścieków
    czas przebywania dystrybucji
    reaktor elektrochemiczny
    ścieki celulozowo-papiernicze
    effluent treatment
    residence time distributions
    electrochemical reactor
    Pulp and Paper mill effluent
    Opis:
    The conventional method of treating pulp and paper mill effluent involves the biological oxidation by bacterial action of aerobic and anaerobic conditions and aerobic lagooning method, which are less efficiency of removing COD. To overcome the drawbacks of the existing treatment process, in the present work an attempt has been made to study the electro oxidative destruction of the pulp and paper mill effluent using an electrochemical method and the effect of various parameters such as concentration of supporting electrolytes, current densities, flow rates of electrolyte and reservoir volumes of the effluent were conducted. From the experimental results it is observed that the rate of reduction of COD of the effluent increased with an increase in the supporting electrolyte (sodium chloride) concentration, current density where as it decreased with increase in the reservoir volume and the flow rate of electrolyte. The residence time distributions studies have also been conducted to study the behavior of the electrochemical reactor.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 3; 37-41
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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