Ethanol, methane, or both? Enzyme dose impact on ethanol and methane production from untreated energy crop switchgrass varieties

A. Başar; Elcin Kökdemir Ünşar; H. Ünyay; N. A. Perendeci

doi:10.1016/j.renene.2019.12.025

Ethanol, methane, or both? Enzyme dose impact on ethanol and methane production from untreated energy crop switchgrass varieties

A. Başar, Elcin Kökdemir Ünşar^*, H. Ünyay, N. A. Perendeci

^*Corresponding author for this work

Akdeniz University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The production of bioethanol and subsequent methane from two raw switchgrass varieties with the addition of cellulase and β-glucosidase dose combinations was investigated in this study. Maximum ethanol production increment for the investigated varieties, Shawneé and Kanlow, were determined as 211.9% and 166.7%, respectively, compared to the control assays without enzymes. Considering higher ethanol production a priority, 42.0 mg EtOH/gVS and 223.5 mLCH₄/gVS were produced from Shawneé variety at 50 EGU cellulase – 80 IU β-glucosidase doses. 20.2 mgEtOH/gVS, and 400.7 mLCH₄/gVS were produced from Kanlow variety at 75 EGU cellulase – 80 IU β-Glucosidase doses. Furthermore, the highest total biofuel energy productions were found as 10750,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 20 IU β-glucosidase doses for Shawneé and 13556,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 80 IU β-glucosidase doses for Kanlow. Shawneé variety was found to be more suitable for cellulosic ethanol production.

Original language	English
Journal	Renewable Energy
Volume	149
Pages (from-to)	287-297
ISSN	0960-1481
DOIs	https://doi.org/10.1016/j.renene.2019.12.025
Publication status	Published - 2020

Keywords

Biofuel production
Enzyme dose
Ethanol and Methane

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@article{bd3c70922d0b48e08d767de2d2ad31ff,

title = "Ethanol, methane, or both? Enzyme dose impact on ethanol and methane production from untreated energy crop switchgrass varieties",

abstract = "The production of bioethanol and subsequent methane from two raw switchgrass varieties with the addition of cellulase and β-glucosidase dose combinations was investigated in this study. Maximum ethanol production increment for the investigated varieties, Shawne{\'e} and Kanlow, were determined as 211.9% and 166.7%, respectively, compared to the control assays without enzymes. Considering higher ethanol production a priority, 42.0 mg EtOH/gVS and 223.5 mLCH4/gVS were produced from Shawne{\'e} variety at 50 EGU cellulase – 80 IU β-glucosidase doses. 20.2 mgEtOH/gVS, and 400.7 mLCH4/gVS were produced from Kanlow variety at 75 EGU cellulase – 80 IU β-Glucosidase doses. Furthermore, the highest total biofuel energy productions were found as 10750,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 20 IU β-glucosidase doses for Shawne{\'e} and 13556,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 80 IU β-glucosidase doses for Kanlow. Shawne{\'e} variety was found to be more suitable for cellulosic ethanol production.",

keywords = "Biofuel production, Enzyme dose, Ethanol and Methane",

author = "A. Ba{\c s}ar and {K{\"o}kdemir {\"U}n{\c s}ar}, Elcin and H. {\"U}nyay and Perendeci, {N. A.}",

year = "2020",

doi = "10.1016/j.renene.2019.12.025",

language = "English",

volume = "149",

pages = "287--297",

journal = "Renewable Energy",

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TY - JOUR

T1 - Ethanol, methane, or both? Enzyme dose impact on ethanol and methane production from untreated energy crop switchgrass varieties

AU - Başar, A.

AU - Kökdemir Ünşar, Elcin

AU - Ünyay, H.

AU - Perendeci, N. A.

PY - 2020

Y1 - 2020

N2 - The production of bioethanol and subsequent methane from two raw switchgrass varieties with the addition of cellulase and β-glucosidase dose combinations was investigated in this study. Maximum ethanol production increment for the investigated varieties, Shawneé and Kanlow, were determined as 211.9% and 166.7%, respectively, compared to the control assays without enzymes. Considering higher ethanol production a priority, 42.0 mg EtOH/gVS and 223.5 mLCH4/gVS were produced from Shawneé variety at 50 EGU cellulase – 80 IU β-glucosidase doses. 20.2 mgEtOH/gVS, and 400.7 mLCH4/gVS were produced from Kanlow variety at 75 EGU cellulase – 80 IU β-Glucosidase doses. Furthermore, the highest total biofuel energy productions were found as 10750,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 20 IU β-glucosidase doses for Shawneé and 13556,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 80 IU β-glucosidase doses for Kanlow. Shawneé variety was found to be more suitable for cellulosic ethanol production.

AB - The production of bioethanol and subsequent methane from two raw switchgrass varieties with the addition of cellulase and β-glucosidase dose combinations was investigated in this study. Maximum ethanol production increment for the investigated varieties, Shawneé and Kanlow, were determined as 211.9% and 166.7%, respectively, compared to the control assays without enzymes. Considering higher ethanol production a priority, 42.0 mg EtOH/gVS and 223.5 mLCH4/gVS were produced from Shawneé variety at 50 EGU cellulase – 80 IU β-glucosidase doses. 20.2 mgEtOH/gVS, and 400.7 mLCH4/gVS were produced from Kanlow variety at 75 EGU cellulase – 80 IU β-Glucosidase doses. Furthermore, the highest total biofuel energy productions were found as 10750,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 20 IU β-glucosidase doses for Shawneé and 13556,9 MJ/tonne field dried switchgrass at 75 EGU cellulase – 80 IU β-glucosidase doses for Kanlow. Shawneé variety was found to be more suitable for cellulosic ethanol production.

KW - Biofuel production

KW - Enzyme dose

KW - Ethanol and Methane

U2 - 10.1016/j.renene.2019.12.025

DO - 10.1016/j.renene.2019.12.025

M3 - Journal article

AN - SCOPUS:85076690850

SN - 0960-1481

VL - 149

SP - 287

EP - 297

JO - Renewable Energy

JF - Renewable Energy

ER -

Ethanol, methane, or both? Enzyme dose impact on ethanol and methane production from untreated energy crop switchgrass varieties

Abstract

Keywords

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