Title:
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New alternative energy pathway for chemical pulp mills: from traditional fibers to methane production
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Author:
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Rodriguez Chiang, Lourdes Maria; Vanhatalo, Kari; Llorca Piqué, Jordi; Dahl Olli, Peka
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia |
Abstract:
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Chemical pulp mills have a need to diversify their end-product portfolio due to the current changing bio-economy. In this study, the methane potential of brown, oxygen delignified and bleached pulp were evaluated in order to assess the potential of converting traditional fibers; as well as microcrystalline cellulose and filtrates; to energy. Results showed that high yields (380 mL CH4/gVS) were achieved with bleached fibers which correlates with the lower presence of lignin. Filtrates from the hydrolysis process on the other hand, had the lowest yields (253 mL CH4/gVS) due to the high amount of acid and lignin compounds that cause inhibition. Overall, substrates had a biodegradability above 50% which demonstrates that they can be subjected to efficient anaerobic digestion. An energy and cost estimation showed that the energy produced can be translated into a significant profit and that methane production can be a promising new alternative option for chemical pulp mills. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria química -Cellulose -Pulp mills -Anaerobic digestion -Biochemical methane potential -Chemical pulp -Microcrystalline cellulose -Cel·lulosa |
Rights:
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Document type:
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Article - Submitted version Article |
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