Search for dissertations about: "pre-treatment"

Showing result 1 - 5 of 341 swedish dissertations containing the word pre-treatment.

2. 1. Reduction of refining energy during mechanical pulping : using pressurised chip compression and sulphite pre-treatment

   Author : Erik Nelsson; Geoffrey Daniel; Mittuniversitetet; Sveriges lantbruksuniversitet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Chip pre-treatment; double disc refiner; energy efficiency; Impressafiner; low dosage; Norway spruce; refining intensity; single disc refiner; sulphite pre-treatment; thermomechanical pulp;

   Abstract : The effects of pressurised compressive chip pre-treatment and low dosage sulphite pre-treatment were evaluated for production of thermomechanical pulp in mill scale trials using Norway spruce (Picea abies) at the Braviken paper mill (Holmen Paper AB, Sweden). The general aim of the study was to improve the energy efficiency during the production of mechanical pulps suitable for news and improved news grade papers. READ MORE

4. 2. Enhancing Composite Cassava Bread Quality - Effect of cassava pre-treatment and baking improvers

   Author : Maria Eduardo; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; baking improvers; bread quality; cassava flour; pre-treatment; composite bread; sensory evaluation;

   Abstract : Due to unfavourable climatic conditions, the production of wheat in Mozambique is not sufficient to satisfy national food industrial needs and substantial quantities must be imported at high cost. Bread is currently produced basically using wheat flour. READ MORE

5. 3. Pre-treatment of substrates for anaerobic digestion : potential and development needs

   Author : My Carlsson; Erik Dahlquist; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Waste Science and Technology; Avfallsteknik;

   Abstract : Substrate pre-treatment has been gaining interest in anaerobic digestion (AD) as a means to increase biogas yields with nowadays more diversified substrate sources. The objective of this thesis is to identify improvement potentials and development needs within applications of substrate pretreatment in anaerobic digestion (AD) based on literature and specific examples, with special focus on the impact assessment and exemplified by the case of electroporation(EP) pre-treatment. READ MORE

6. 4. Industrially Pre-Treated Potatoes (Solanum tuberosum L.) Served in Large-Scale Food Service Systems

   Author : Klara Sjölin; Avdelningen för livsmedel och läkemedel; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Potatoes Solanum tuberosum L. ; large-scale food service system; Industrial pre-treatment; subsurface hardening; Potatoes Solanum tuberosum L. ; subsurface hardening; industrial pre-treatment; large-scale food service systems;

   Abstract : In Swedish schools, a warm lunch is served every day. The lunch is prepared in a largescale food service system and includes steam-cooked potatoes several times per week. The potatoes are often industrially pre-treated to facilitate the handling and logistics required to cook hundreds of meals in a couple of hours. READ MORE

7. 5. Improving physical flows in biomass-to-energy supply chains by means of pre-treatment technology and coordination

   Author : Martin Svanberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pre-treatment technology; torrefaction and coordination; supply chain; biomass-to-energy; physical flow; logistics;

   Abstract : AbstractThe transition from fossil fuel to renewable energy sources such as biomass-to-energy (B2E) is an environmentally sustainable pathway. However, increased use of biomass is hampered by the high costs of logistics activities within the physical flow. READ MORE