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Optimization of microwave assisted delignification of wood residues by surface response methodology

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Optimization of microwave assisted delignification of wood residues by surface response methodology

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dc.contributor.author Trifan, Adrian es_ES
dc.contributor.author Calinescu, Ioan es_ES
dc.contributor.author Vinatoru, Mircea es_ES
dc.contributor.author Gavrila, Adina es_ES
dc.date.accessioned 2019-11-04T07:43:03Z
dc.date.available 2019-11-04T07:43:03Z
dc.date.issued 2019-10-15
dc.identifier.isbn 9788490487198
dc.identifier.uri http://hdl.handle.net/10251/130158
dc.description.abstract [EN] Efficient processing of vegetal biomass is a great challenge to current research studies. This work is focused on improving the yield of enzymatic hydrolysis of wood residues by removal of lignin using a alkaline wash assisted by microwave heating. The treatments were carried out for one hour in a pressurized microwave reactor (Synthwave-Milestone). The performance of the treatments was assessed by monitoring the concentration of lignin (determined by UV absorbance at 320 nm against a calibration curve). Each experiment was carried out in duplicate. The treatment conditions were established according to an experimental matrix constructed (in Design Expert 11) after the careful selection of the most important factors that affect the lignin removal from wood residue: concentration of NaOH solution, liquid to solid ratio and temperature. A central composite design was constructed with the independent factors mentioned above. ANOVA indicated adequate fitting of the model (correlation coefficient R2=0.95). The exploration of the experimental space (figure 1) with the fitted model indicates the dominant effect of temperature as independent factor. Optimization of experimental conditions within the experimental space was carried according to the following criteria: minimization of temperature, liquid to solid ratio and NaOH concentration and maximization of the response variable, the lignin concentration. The optimal solution (141 mg lignin / g dry wood residue) proposed by the model for these optimization criteria indicates a point in the region determined by the following coordinates: 0.4M NaOH, 1070C and a ratio of liquid to solid equal to 50. es_ES
dc.description.sponsorship The authors acknowledge the financial support received from the Competitiveness Operational Programme 2014 - 2020, Action 1.1.4: Attracting high-level personnel from abroad in order to enhance the RD capacity, ID project: P_37_471, MY SMIS 105145, Ultrasonic/Microwave nonconventional techniques as new tools for nonchemical and chemical processes, financed by contract: 47/05.09.2016. es_ES
dc.format.extent 8 es_ES
dc.language Inglés es_ES
dc.publisher Editorial Universitat Politècnica de València es_ES
dc.relation FEDER-Guvernul României/P_37_471, MY SMIS 105145-47/05.09.2016
dc.relation.ispartof AMPERE 2019. 17th International Conference on Microwave and High Frequency Heating es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Energy Production by Microwaves es_ES
dc.subject Microwave CVD es_ES
dc.subject EM Modelling es_ES
dc.subject Microwave Material interaction es_ES
dc.subject Dielectric Properties es_ES
dc.subject Dielectric Properties Measurement es_ES
dc.subject Solid State Microwave es_ES
dc.subject Microwave Processing es_ES
dc.subject Microwave Chemistry es_ES
dc.subject Microwave applicators design es_ES
dc.subject Microwave es_ES
dc.subject Ligning es_ES
dc.subject Wood residue es_ES
dc.title Optimization of microwave assisted delignification of wood residues by surface response methodology es_ES
dc.type Capítulo de libro es_ES
dc.type Comunicación en congreso es_ES
dc.identifier.doi 10.4995/AMPERE2019.2019.9861
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Trifan, A.; Calinescu, I.; Vinatoru, M.; Gavrila, A. (2019). Optimization of microwave assisted delignification of wood residues by surface response methodology. En AMPERE 2019. 17th International Conference on Microwave and High Frequency Heating. Editorial Universitat Politècnica de València. 217-224. https://doi.org/10.4995/AMPERE2019.2019.9861 es_ES
dc.description.accrualMethod OCS es_ES
dc.relation.conferencename Ampere 2019 es_ES
dc.relation.conferencedate Septiembre 09-12, 2019 es_ES
dc.relation.conferenceplace Valencia, Spain es_ES
dc.relation.publisherversion http://ocs.editorial.upv.es/index.php/AMPERE2019/AMPERE2019/paper/view/9861 es_ES
dc.description.upvformatpinicio 217 es_ES
dc.description.upvformatpfin 224 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.relation.pasarela OCS\9861 es_ES
dc.contributor.funder European Regional Development Fund
dc.contributor.funder Government of Romania


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