Search for dissertations about: "alkaline pretreatment"

Showing result 1 - 5 of 14 swedish dissertations containing the words alkaline pretreatment.

2. 1. Biochemical conversion of biomass to biofuels : pretreatment–detoxification–hydrolysis–fermentation

   Author : Venkata Prabhakar Soudham; Jyri-Pekka Mikkola; Christer Larsson; Tom Birger Granström; Umeå universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lignocellulosic materials; Ionic liquids; Pretreatment; Inhibitors; Detoxification; Ferrous sulfate and hydrogen peroxide; reducing agents; alkaline treatments; Hydrolysis; Fermentation; Biofuels; biokemi; Biochemistry;

   Abstract : The use of lignocellulosic materials to replace fossil resources for the industrial production of fuels, chemicals, and materials is increasing. The carbohydrate composition of lignocellulose (i.e. cellulose and hemicellulose) is an abundant source of sugars. READ MORE

4. 2. Delignification and bleachability of kraft pulps pretreated with nitrogen dioxide

   Author : Per Larsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chlorine dioxide; oxygen bleaching; molecular mass; paper properties; ozone bleaching; nitrogen dioxide; kraft pulps; pretreatment; gel permeation chromatography; indulin AT; hydrogen peroxide; consecutive alkaline extractions;

   Abstract : .... READ MORE

5. 3. Biogas Production from Citrus Wastes and Chicken Feather : Pretreatment and Co-digestion

   Author : Gergely Forgács; Högskolan i Borås; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; anaerobic digestion; pretreatments; co-digestion; economic analyses; citrus wastes; feather; Energi; material; Resursåtervinning; Resource Recovery;

   Abstract : Anaerobic digestion is a sustainable and economically feasible waste management technology, which lowers the emission of greenhouse gases (GHGs), decreases the soil and water pollution, and reduces the dependence on fossil fuels. The present thesis investigates the anaerobic digestion of waste from food-processing industries, including citrus wastes (CWs) from juice processing and chicken feather from poultry slaughterhouses. READ MORE

6. 4. Dissolution of cellulose for textile fibre applications

   Author : Martin Kihlman; Ulf Germgård; Mats Westin; Lars Stigsson; Stefan Backa; Karlstads universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alkaline aqueous solvent systems; cellulose; dissolution; dissolving pulp; kraft pulp; pretreatment; pulp characterization; sulfite pulp; textile fibres; Chemical Engineering; Kemiteknik;

   Abstract : This thesis forms part of a project with the objective of developing and implementing a novel, wood-based, process for the industrial production of cellulose textile fibres. This new process should not only be cost effective but also have far less environmental impact then current processes. READ MORE

7. 5. Waste Textiles Bioprocessing to Ethanol and Biogas

   Author : Azam Jeihanipour; Högskolan i Borås; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioethanol; biogas; biorefinery; cellulose recalcitrance; cotton-based cellulose; enzymatic hydrolysis; pretreatment; recycling; waste textile; Resursåtervinning; Resursåtervinning; Resource Recovery;

   Abstract : The work of the present thesis focused on conversion of the cellulosic part of waste textiles into biogas and ethanol, and its challenges. In 2009, the global annual fiber consumption exceeded 70 Mt, of which around 40% consisted of cellulosic material. READ MORE