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Dilute alkali pre-treatment of wheat straw in high-pressure reactor


Trontel, Antonija; Vidović, Petra; Novak, Mario; Marđetko, Nenad; Šantek, Božidar
Dilute alkali pre-treatment of wheat straw in high-pressure reactor // Book of Abstracts - 9th International Congress of Food Technologists, Biotechnologists and Nutritionists / Kovačević-Ganić, Karin ; Dragović-Uzelac, Verica ; Balbino, Sandra (ur.).
Zagreb: Croatian Society of Food Technologists, Biotechnologists and Nutritionists, 2018. str. 55-55 (predavanje, međunarodna recenzija, sažetak, znanstveni)


Naslov
Dilute alkali pre-treatment of wheat straw in high-pressure reactor

Autori
Trontel, Antonija ; Vidović, Petra ; Novak, Mario ; Marđetko, Nenad ; Šantek, Božidar

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts - 9th International Congress of Food Technologists, Biotechnologists and Nutritionists / Kovačević-Ganić, Karin ; Dragović-Uzelac, Verica ; Balbino, Sandra - Zagreb : Croatian Society of Food Technologists, Biotechnologists and Nutritionists, 2018, 55-55

ISBN
978-953-99725-7-6

Skup
9th International Congress of Food Technologists, Biotechnologists and Nutritionists

Mjesto i datum
Zagreb, Hrvatska, 03.-05.10.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Wheat straw, dilute alkali pre-treatment, high-pressure reactor, different temperatures, deferent residence times

Sažetak
Waste lignocellulosic raw materials are by- products of agriculture, forest and wood industry, and represent a valuable alternative for the production of biofuels and different biochemicals. Since lignocellulose is highly resistant to microbial degradation, the aim of this work was to conduct alkali pre-treatment of wheat straw and to determine the optimum conditions for wheat straw pre-treatment with sodium hydroxide solution. Pretreatment of wheat straw was performed in high-pressure reactor. The reactor was filled with 500 g of wheat straw (% w/w ; reduced in size to 5 mm pieces) and 10 L of 2 % (w/w) sodium hydroxide solution and homogenized. Pre-treatment was performed at 120, 160, 180 and 210°C and residence time of 1, 10 and 20 minutes. After pretreatment two phases were obtained, liquid and solid phase (pre-treated wheat straw). Composition of these phases was determined according to NREL method (Sluiter et al., 2011). Glucan content in the pretreated wheat straw ranged from 23.5 % to 86.1 %, while xylan and arabinan content ranged from 1.6 % to 24.8 % and 0.00 % to 11.4 %, respectively. Also, in these pretreatments 55.8 % to 97.1 % of lignin was removed. The highest glucan content (86.1 %) in solid phase was determined at 210°C and a residence time of 10 minutes while maximum lignin removal (97.1 %) in contrast to wheat straw composition was determined at 210°C and 20 minutes residence time.

Izvorni jezik
Engleski



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Projekt / tema
HRZZ-IP-2013-11-9158 - Održiva proizvodnja bioetanola i biokemikalija iz otpadnih poljoprivrednih lignoceluloznih sirovina (Božidar Šantek, )

Ustanove
Prehrambeno-biotehnološki fakultet, Zagreb