Essays about: "soxhlet extraction"

Showing result 1 - 5 of 7 essays containing the words soxhlet extraction.

1. 1. Spruce bark biorefinery

   University essay from KTH/Fiber- och polymerteknologi

   Author : Leon Ahlström; Rebecca Mattsson; Hampus Eurén; Alicia Lidén; [2021]
   Keywords : Norway spruce bark; bark biorefinery; extractives; cellulose; lignin; non-cellulose; polysaccharides; soxhlet extraction; hot-water extraction; organosolv extraction; PAA; delignification; carbohydrate analysis; 2D HSQC-NMR and FTIR; Granbark; bark bioraffinaderi; lignin; organosolv extraktion; hot-water extraktion;

   Abstract : Spruce Bark contains several fundamental main substances; lignin, non-cellulose polysaccharides, cellulose and extractives. This undergraduate study focuses on developing a process to extract each of these components from spruce bark using a biorefinery concept, with a main focus on extracting lignin without degradation. READ MORE

3. 2. Fractionation of Wheat Bran for Utilisation in Biorefinery

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Gabriella Haag; [2021]
   Keywords : Wheat bran; biorefinery; chemical engineering; vetekli; bioraffinaderi; extraction; Technology and Engineering;

   Abstract : Wheat bran is a by-product from the production of wheat flour. Nowadays wheat bran is mostly used as feed for animals, in the food and baking industry or it is simply burned in open air. READ MORE

4. 3. Analysis of PFAS in ash from incineration facilities from Sweden

   University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

   Author : Dennis Wohlin; [2020]
   Keywords : ;

   Abstract : Per- and polyfluoroalkyl substances (PFAS) are a group of organohalogens that bioaccumulate in biota, have toxicological effects and are persistent in the environment. Because of the fluorinated carbon chain, PFASs are present in many household and industrial products. READ MORE

5. 4. Method development for the analysis of PFAS and neutral precursors in active and passive air samplers

   University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

   Author : Pascal Camoiras González; [2019]
   Keywords : ;

   Abstract : Poly- and perfluoroalkyl substances (PFAS) are a chemical class of global concern because of their persistence, toxicity and widespread presence in the environment. This work aimed to develop a robust and reliable method to analyse perfluorohexane sulfonic acid (PFHxS), perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), as well as the neutral volatile PFOS precursors, namely perfluorooctane sulfonamides and perfluorooctane sulfonamidoethanols (FOSAs/FOSEs). READ MORE

6. 5. Spreading of persistent organic pollutants from fiber bank sediments

   University essay from SLU/Dept. of Aquatic Sciences and Assessment

   Author : Lisa Vogel; [2015]
   Keywords : persistent organic pollutants; PCB; DDT; HCB; fiber bank; paper and pulp; POM; log Kd; bioaccumulation; pore water concentration; Marenzelleria spp.; Saduria entomon;

   Abstract : Discharge of untreated wastewater from paper and pulp industries have led to large environmental impacts on the coastal sediments in Västernorrland, Sweden. Dissolved fibers caused the formation of large fiber banks and fiber influenced sediment areas, which proved to be highly affected by contamination with persistent organic pollutants (POPs). READ MORE