Essays about: "adsorption"

Showing result 21 - 25 of 288 essays containing the word adsorption.

  1. 21. A new generation ofsmart food packaging : A combination of releasing anti-microbial and generation carbon dioxide inmeat packaging

    University essay from Karlstads universitet

    Author : samar salahieh; [2023]
    Keywords : adsorption isotherms; desorption kinetics; benzoic acid; thymol; modified calcium carbonate; silica gel; carbon dioxide; food pad.; adsorptionsisotermer; desorptionskinetiken; bensoesyra; tymol; modifierat kalciumkarbonat; kisel gel; koldioxid; food pad.;

    Abstract : Abstract Food sustainability depends significantly on packaging since it helps maintainfood safe and fresh throughout its shelf life, resulting in the least amount ofwaste and the least negative environmental impact. The main objective of thisstudy is to determine the adsorbed and released amount of antimicrobial agents(benzoic acid and thymol) on modified calcium carbonate (MCC) by investigating adsorption isotherm at 25°C and desorption kinetics at both 22°C and5°C of anti-microbial to identify potential solutions to enhance the long-termsustainability of fresh products such as meat. READ MORE

  3. 22. Design and processing of metal-organic frameworks for greenhouse gas capture

    University essay from Uppsala universitet/Nanoteknologi och funktionella material

    Author : Evelina Wiksten; [2023]
    Keywords : Metal-organic frameworks; zeolitic imidazolate frameworks; carbon capture; gas adsorption; direct ink writing;

    Abstract : Anthropogenic emission of greenhouse gases has long been suspected to contribute to global warming and climate change. Most greenhouse gases are emitted in a mixture, so efficient methods and materials to separate and capture the gases are in demand in order to reduce emissions. READ MORE

  4. 23. Investigation of Adsorption and Retention of Charged Compounds In RPLC

    University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Author : Emma Fryxelius; [2022]
    Keywords : adsorption; adsorption isotherm; charged compounds; promethazine hydrochloride; propranolol hydrochloride; mixed-mode; retention; RPLC;

    Abstract : The adsorption isotherm of two weak bases, Promethazine hydrochloride and Propranolol hydrochloride, were determined with isocratic reversed-phase liquid chromatography, with a 60 w% methanol in 20 mM sodium acetate buffer pH 4 as the mobile phase, and calculated by the elution by characteristic points method. The data obtained from the method were then fitted into the Langmuir isotherm and the electrostatically modified Langmuir. READ MORE

  5. 24. Moisture Transport in PA6

    University essay from Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

    Author : Emanuel Markström; [2022]
    Keywords : Technology and Engineering;

    Abstract : Polyamide 6 (PA6) is known to absorb water from its environment due to its chemical structure. The water absorption leads to changes in the mechanical properties as well as an increase in volume (swelling) of the polyamide. READ MORE

  6. 25. On-chip characterization of hydroxyapatite with different topography

    University essay from Uppsala universitet/Institutionen för materialvetenskap

    Author : Maja Grape; [2022]
    Keywords : biomaterials; calcium-deficient hydroxyapatite; microfluidic systems;

    Abstract : Biomaterials are defined as non-viable materials whose functions strives to interact with biological systems, this makes biomaterials suitable for medical devices and applications. Biomaterials biological properties must be thoroughly investigated and evaluated in order to be approved for clinical usage. READ MORE