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Delignification of disposable wooden chopsticks waste for fermentative hydrogen production by an enriched culture from a hot spring.

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Title: Delignification of disposable wooden chopsticks waste for fermentative hydrogen production by an enriched culture from a hot spring.
Authors: Phummala, Kanthima1 kobkku@gmail.com, Imai, Tsuyoshi1 imai@yamaguchi-u.ac.jp, Reungsang, Alissara2, Chairattanamanokorn, Prapaipid3, Sekine, Masahiko4, Higuchi, Takaya1, Yamamoto, Koichi4, Kanno, Ariyo4
Source: Journal of Environmental Sciences (Elsevier). Jun2014, Vol. 26 Issue 6, p1361-1368. 8p.
Subjects: Disposable tableware, Delignification, Hydrogen production, Hot springs, Fermentation, Temperature effect
Abstract: Hydrogen (H 2 ) production from lignocellulosic materials may be enhanced by removing lignin and increasing the porosity of the material prior to enzymatic hydrolysis. Alkaline pretreatment conditions, used to delignify disposable wooden chopsticks (DWC) waste, were investigated. The effects of NaOH concentration, temperature and retention time were examined and it was found that retention time had no effect on lignin removal or carbohydrate released in enzymatic hydrolysate. The highest percentage of lignin removal (41%) was obtained with 2% NaOH at 100°C, correlated with the highest carbohydrate released (67 mg/g pretreated DWC ) in the hydrolysate. An enriched culture from a hot spring was used as inoculum for fermentative H 2 production, and its optimum initial pH and temperature were determined to be 7.0 and 50°C, respectively. Furthermore, enzymatic hydrolysate from pretreated DWC was successfully demonstrated as a substrate for fermentative H 2 production by the enriched culture. The maximum H 2 yield and production rate were achieved at 195 mL H 2 /g total sugars consumed and 116 mL H 2 /(L·day), respectively. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 98770213
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
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  Data: Delignification of disposable wooden chopsticks waste for fermentative hydrogen production by an enriched culture from a hot spring.
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  Data: <searchLink fieldCode="AR" term="%22Phummala%2C+Kanthima%22">Phummala, Kanthima</searchLink><relatesTo>1</relatesTo><i> kobkku@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Imai%2C+Tsuyoshi%22">Imai, Tsuyoshi</searchLink><relatesTo>1</relatesTo><i> imai@yamaguchi-u.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Reungsang%2C+Alissara%22">Reungsang, Alissara</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chairattanamanokorn%2C+Prapaipid%22">Chairattanamanokorn, Prapaipid</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Sekine%2C+Masahiko%22">Sekine, Masahiko</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Higuchi%2C+Takaya%22">Higuchi, Takaya</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yamamoto%2C+Koichi%22">Yamamoto, Koichi</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Kanno%2C+Ariyo%22">Kanno, Ariyo</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Sciences+%28Elsevier%29%22">Journal of Environmental Sciences (Elsevier)</searchLink>. Jun2014, Vol. 26 Issue 6, p1361-1368. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Disposable+tableware%22">Disposable tableware</searchLink><br /><searchLink fieldCode="DE" term="%22Delignification%22">Delignification</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+production%22">Hydrogen production</searchLink><br /><searchLink fieldCode="DE" term="%22Hot+springs%22">Hot springs</searchLink><br /><searchLink fieldCode="DE" term="%22Fermentation%22">Fermentation</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Hydrogen (H 2 ) production from lignocellulosic materials may be enhanced by removing lignin and increasing the porosity of the material prior to enzymatic hydrolysis. Alkaline pretreatment conditions, used to delignify disposable wooden chopsticks (DWC) waste, were investigated. The effects of NaOH concentration, temperature and retention time were examined and it was found that retention time had no effect on lignin removal or carbohydrate released in enzymatic hydrolysate. The highest percentage of lignin removal (41%) was obtained with 2% NaOH at 100°C, correlated with the highest carbohydrate released (67 mg/g pretreated DWC ) in the hydrolysate. An enriched culture from a hot spring was used as inoculum for fermentative H 2 production, and its optimum initial pH and temperature were determined to be 7.0 and 50°C, respectively. Furthermore, enzymatic hydrolysate from pretreated DWC was successfully demonstrated as a substrate for fermentative H 2 production by the enriched culture. The maximum H 2 yield and production rate were achieved at 195 mL H 2 /g total sugars consumed and 116 mL H 2 /(L·day), respectively. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/S1001-0742(13)60612-9
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 8
        StartPage: 1361
    Subjects:
      – SubjectFull: Disposable tableware
        Type: general
      – SubjectFull: Delignification
        Type: general
      – SubjectFull: Hydrogen production
        Type: general
      – SubjectFull: Hot springs
        Type: general
      – SubjectFull: Fermentation
        Type: general
      – SubjectFull: Temperature effect
        Type: general
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      – TitleFull: Delignification of disposable wooden chopsticks waste for fermentative hydrogen production by an enriched culture from a hot spring.
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            NameFull: Phummala, Kanthima
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            NameFull: Imai, Tsuyoshi
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            NameFull: Reungsang, Alissara
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            NameFull: Sekine, Masahiko
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              M: 06
              Text: Jun2014
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              Y: 2014
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