Bark assortments for tall oil production
Fatty and resin acids in bark residues from forest industries can be used to produce high-value green chemicals. Of the assortments investigated, the bark of spruce pulpwood held the highest amount of these compounds with an average yield of 0.9 kg per cubic meter of wood. The variations were found...
| Autor principal: | |
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| Formato: | Second cycle, A2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2016
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| Acceso en línea: | https://stud.epsilon.slu.se/9202/ |
| _version_ | 1855571478721855488 |
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| author | Isacsson, Patrik |
| author_browse | Isacsson, Patrik |
| author_facet | Isacsson, Patrik |
| author_sort | Isacsson, Patrik |
| collection | Epsilon Archive for Student Projects |
| description | Fatty and resin acids in bark residues from forest industries can be used to produce high-value green chemicals. Of the assortments investigated, the bark of spruce pulpwood held the highest amount of these compounds with an average yield of 0.9 kg per cubic meter of wood. The variations were found by analysing fresh bark and tree data from homogenous stands of Norway spruce (Picea abies) and Scots pine (Pinus sylvestris). The concentrations of fatty and resin acids in Norway spruce bark showed positive relationships with annual ring increment. The compounds showed negative relationships with both the tree diameter and the bark age as well. The best economical prerequisites for processing the bark were found at pulp mills which only use spruce. Some results support theories about polymerisation of fatty and resin acids due to aging. Since the bark in this study were carefully treated and kept fresh, further research for industrial relevance can preferably focus on the non-fresh bark residues of spruce pulpwood at mill sites. |
| format | Second cycle, A2E |
| id | RepoSLU9202 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2016 |
| publishDateSort | 2016 |
| record_format | eprints |
| spelling | RepoSLU92022016-08-03T07:57:09Z https://stud.epsilon.slu.se/9202/ Bark assortments for tall oil production Isacsson, Patrik Processing of forest products Fatty and resin acids in bark residues from forest industries can be used to produce high-value green chemicals. Of the assortments investigated, the bark of spruce pulpwood held the highest amount of these compounds with an average yield of 0.9 kg per cubic meter of wood. The variations were found by analysing fresh bark and tree data from homogenous stands of Norway spruce (Picea abies) and Scots pine (Pinus sylvestris). The concentrations of fatty and resin acids in Norway spruce bark showed positive relationships with annual ring increment. The compounds showed negative relationships with both the tree diameter and the bark age as well. The best economical prerequisites for processing the bark were found at pulp mills which only use spruce. Some results support theories about polymerisation of fatty and resin acids due to aging. Since the bark in this study were carefully treated and kept fresh, further research for industrial relevance can preferably focus on the non-fresh bark residues of spruce pulpwood at mill sites. Fett- och hartssyror i barkavfall från skogsindustrier kan användas för att producera värdefulla gröna kemikalier. Bland undersökta sortiment står bark från granmassaved ut med stora mängder av dessa ämnen, med ett medelutbyte på 0,9 kg per fastkubikmeter ved. Det upptäcktes genom att analysera färsk bark och träddata insamlad från homogena bestånd av gran (Picea abies) och tall (Pinus sylvestris). Halten av fett- och hartssyror visade positiva samband med årsringstillväxten och negativa samband med diameter och barkens ålder. Massabruk som endast hanterar granmassaved visade sig ha de bästa ekonomiska förutsättningarna för att förädla barken. En del resultat stödjer teorier om att fett- och hartssyror polymeriseras med åldern. Eftersom det här arbetet endast använt bark som hanterats varsamt och behållits färskt, bör fortsatte studier för industriell relevans studera ej färskt barkavfall vid industri. 2016-06-16 Second cycle, A2E NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/9202/1/isacsson_p_160803.pdf Isacsson, Patrik, 2016. Bark assortments for tall oil production. Second cycle, A2E. Umeå: (S) > Department of Forest Biomaterials and Technology (from 131204) <https://stud.epsilon.slu.se/view/divisions/OID-545.html> urn:nbn:se:slu:epsilon-s-5587 eng |
| spellingShingle | Processing of forest products Isacsson, Patrik Bark assortments for tall oil production |
| title | Bark assortments for tall oil production |
| title_full | Bark assortments for tall oil production |
| title_fullStr | Bark assortments for tall oil production |
| title_full_unstemmed | Bark assortments for tall oil production |
| title_short | Bark assortments for tall oil production |
| title_sort | bark assortments for tall oil production |
| topic | Processing of forest products |
| url | https://stud.epsilon.slu.se/9202/ https://stud.epsilon.slu.se/9202/ |