Pilot Technology of Ethanol Production from Oat Hulls for Subsequent Conversion to Ethylene | Sciact - CRIS-system of Boreskov Institute of Catalysis

Pilot Technology of Ethanol Production from Oat Hulls for Subsequent Conversion to Ethylene Full article

Conference

XXII International Conference on Chemical Reactors
19-23 Sep 2016 , London

Journal

Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212

Output data

Year: 2017, Volume: 391, Pages: 178-186 Pages count : 9 DOI: 10.1016/j.cej.2017.05.182

Tags

Alkaline pretreatment, Bioethanol catalytic dehydration, DSSF, Ethylene, Oat hulls, Pilot-scale production cycle, Pre-saccharification, Rotary-pulsating apparatus

Authors

Skiba E.A. ¹ , Baibakova O.V. ¹ , Budaeva V.V. ¹ , Pavlov I.N. ¹ , Vasilishin M.S. ¹ , Makarova E.I. ¹ , Sakovich G.V. ¹ , Ovchinnikova E.V. ² , Banzaraktsaeva S.P. ² , Vernikovskaya N.V. ² , Chumachenko V.A. ²

Affiliations

1	Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Socialisticheskaya Str., 1, 659322 Biysk, Altai Krai, Russia
2	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences (BIC SB RAS), Pr. Akad. Lavrentieva, 5, 630090 Novosibirsk, Russia

Complete cycle of ethylene production from oat hulls as widespread agricultural waste was studied on a pilot scale. The cycle involved mechano-chemical, biotechnological and catalytic units. The oat hulls were pretreated with a 2%(w/w) sodium hydroxide solution in a setup consisting of a rotary-pulsating apparatus and a 100-L vessel to produce a pulp containing 90.3% of hydrolyzables. Simultaneous saccharification and fermentation of oat hull pulp with delayed inoculation (dSSF) into ethanol using commercial enzymes CelloLux-A and BrewZyme-BGX and non-GMO yeast Saccharomyces cerevisiae was carried out in 63-L reactor. At a solid loading of 33.3g/L, the yield of reducing sugars was 97.9% on overall hydrolyzables basis. The ethanol yield during dSSF at a solid loading of 60g/L was as high as 95g ethanol/kg oat hulls. The produced raw-ethanol sample contained low impurities of methanol, propanol and alkali metals. The rectified ethanol samples were used for dehydration to ethylene with the overall production index as high as 38-51g ethylene/kg oats hulls. A negative impact of the propanol and alkali metals impurities in the rectified ethanol on conversion and selectivity to ethylene were observed. Being purified from organic impurities, ethanol was dehydrated with higher conversion and selectivity to ethylene. When the ethanol samples that contain less than 0.02g/L organic and no sodium impurities were used in ethanol dehydration process, the yield of ethylene was as high as 56g ethylene/kg oats hulls. In this work, 12kg of oat hulls was converted to 1.21kg 94%(w/w) ethanol, which was then converted to 0.62kg 99.5% ethylene; this is the first experimental study devoted to the production of ethylene from oat hulls on a pilot scale.

Skiba E.A. , Baibakova O.V. , Budaeva V.V. , Pavlov I.N. , Vasilishin M.S. , Makarova E.I. , Sakovich G.V. , Ovchinnikova E.V. , Banzaraktsaeva S.P. , Vernikovskaya N.V. , Chumachenko V.A.
Pilot Technology of Ethanol Production from Oat Hulls for Subsequent Conversion to Ethylene
Chemical Engineering Journal. 2017. V.391. P.178-186. DOI: 10.1016/j.cej.2017.05.182 WOS Scopus РИНЦ AN OpenAlex

Published online:	Jun 1, 2017
Published print:	Dec 1, 2017

Web of science:	WOS:000410765700018
Scopus:	2-s2.0-85020256411
Elibrary:	31001954
Chemical Abstracts:	2017:965882
OpenAlex:	W2620733104

DB	Citing
Web of science	29
Scopus	32
Elibrary	44
OpenAlex	37