Search results for "paperiteollisuus"
showing 10 items of 45 documents
Aerobic composting and anaerobic digestion of pulp and paper mill sludges
1997
The feasibility of aerobic vessel composting and anaerobic digestion for the treatment of pulp and paper mill sludges were studied. The composting studies made use of primary and secondary sludge from a de-inking and paper mill. In six parallely aerated 500 1 vessels with various carbon : nitrogen (C:N) -ratios, the most optimal performance was obtained with C:N -ratios of c. 22–35, while higher and lower ratios delayed the temperature increase. With the optimal ratios, the thermophilic stage was reached within 36 h, and the stage lasted for about seven days. In the scale-up study (18 m3 compost vessel), the thermophilic stage was reached within 24 h. An effective dehydratation of the mass …
Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar September 1-3, 2020 in Jyväskylä, Finland
2020
The scope of the Progress in Paper Physics Seminar is to discuss the broad scope of physical properties of paper, paperboard and new cellulose containing materialas. The program contain presentations reporting on the latest experimental, theoretical and computational developments. The three invited plenary speakers aim at bringing industry and academia together for in-depth discussions on selected topics in paper physics the potential impact on industry. The selected 37 oral presentations and 12 poster presentations provide opportunity to improve scientific knowledge and explore the latest outcomes and trends in the field. nonPeerReviewed
On the mechanical stability and out-of-plane dynamics of a travelling panel submerged in axially flowing ideal fluid : a study into paper production …
2011
Material flow models in environmental policy planning : case: pulp and paper industry
2001
Knowledge and decisions in environmental contexts : a case study of the pulp and paper industry
2003
Osaamisen jakamisen sovellus paperiteollisuudessa : käyttöönottoprosessi ja hiljaisen tiedon esiinkaivaminen : TITE-projektin loppuraportti
2005
The Nanoeconomics of Firm‐Level Decision‐Making and Industry Evolution : Evidence from 200 Years of Paper and Pulp Making
2020
Research summary We explore the qualitative differences in entries and exits over time. Using qualitative and quantitative data on 96 firms over 200 years, we study industry evolution from the perspective of individual decision‐making situations. Our historical and statistical analyses reveal the vital role of technology investments in determining firm outcomes, and the technological, institutional and governance dynamics that lead firms to invest or to abstain. Our main theoretical and methodological contribution concerns the importance of the multiplicity of firm‐level rationalities and decisions as fundamentals in theorizing on industry evolution. Managerial summary What determines firm …
Monialaisen yhtiön johtamisen haaste : Tampella yhtiö vuodesta 1958 vuoteen 1995
2021
Jyväskylän yliopistossa 11.12.2020 väitelleen Jouko Wacklinin lektio Tampellan monialayrityksen vaiheista. Diplomi-insinööri Wacklinin taloushistorian väitöskirja osoittaa, että yrityksen ylimmän johdon organisatoriset valmiudet ovat kriittinen tekijä yrityksen pitkän aikavälin kannattavan toiminnan varmistamiseksi. nonPeerReviewed
The use of calcined paper mill sludge as a chemical precipitant in the simultaneous removal of ammonium and phosphate : paper mill waste recycling an…
2020
Currently, recycling and re-use of materials is extremely important due to the diminishing of natural resources. The objective of the European Union’s circular economy strategy is to increase recycling and the use of industrial waste materials and side streams as secondary raw materials. In this study, a chemical precipitation method to simultaneously remove ammonium nitrogen and phosphate from the liquid phase of anaerobic digestate using calcined paper mill sludge was studied. Papermill sludge is a waste material that forms in the paper-making process. In addition, commercial calcium oxide (CaO) was used as a reference precipitant. The suitability of the formed precipitate’s composition f…