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Evaluation of ultrasonic, acid, thermo-alkaline and enzymatic pre-treatments on anaerobic digestion of Ulva rigida for biogas production.

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Title: Evaluation of ultrasonic, acid, thermo-alkaline and enzymatic pre-treatments on anaerobic digestion of Ulva rigida for biogas production.
Authors: Karray, Raida1, Hamza, Manel1 manel.hamza@yahoo.fr, Sayadi, Sami1
Source: Bioresource Technology. Jul2015, Vol. 187, p205-213. 9p.
Subjects: Ultrasonics, Alkaline earth metals, Enzymatic analysis, Anaerobic digestion, Ulvaceae, Biogas production
Abstract: Pre-treatment of macroalgae has received considerable research globally due to its influence on the technical, economic and environmental sustainability of algae biogas production. Some of the most promising pre-treatment methods require the application of chemicals, enzymatic, and mechanical. This study focused on these pre-treatments of Ulva rigida for biogas production. The evaluation of different pre-treatment in terms of reducing sugar yields demonstrates that 3.62, 2.88, 2.53 and 7.3 g/L of reducing sugar was obtained in acid catalysis, thermoalkaline, ultrasonication and enzymatic pre-treatment, respectively. However in crude macroalgae only 0.6 g/L of reducing sugar was given. After anaerobic digestion, the enzymatic hydrolysis was demonstrated the best biogas yield than other pre-treatment which reached 626.5 mL/g COD int with 62.65% of biodegradability. The best demonstrated method which uses crude broth of Aspergillus niger showed an effective and environmentally friendly strategy for enhancing the biogas production yields after the anaerobic digestion. [ABSTRACT FROM AUTHOR]
Copyright of Bioresource Technology 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: 102218406
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Evaluation of ultrasonic, acid, thermo-alkaline and enzymatic pre-treatments on anaerobic digestion of Ulva rigida for biogas production.
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  Data: <searchLink fieldCode="AR" term="%22Karray%2C+Raida%22">Karray, Raida</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hamza%2C+Manel%22">Hamza, Manel</searchLink><relatesTo>1</relatesTo><i> manel.hamza@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Sayadi%2C+Sami%22">Sayadi, Sami</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Bioresource+Technology%22">Bioresource Technology</searchLink>. Jul2015, Vol. 187, p205-213. 9p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Ultrasonics%22">Ultrasonics</searchLink><br /><searchLink fieldCode="DE" term="%22Alkaline+earth+metals%22">Alkaline earth metals</searchLink><br /><searchLink fieldCode="DE" term="%22Enzymatic+analysis%22">Enzymatic analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Anaerobic+digestion%22">Anaerobic digestion</searchLink><br /><searchLink fieldCode="DE" term="%22Ulvaceae%22">Ulvaceae</searchLink><br /><searchLink fieldCode="DE" term="%22Biogas+production%22">Biogas production</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Pre-treatment of macroalgae has received considerable research globally due to its influence on the technical, economic and environmental sustainability of algae biogas production. Some of the most promising pre-treatment methods require the application of chemicals, enzymatic, and mechanical. This study focused on these pre-treatments of Ulva rigida for biogas production. The evaluation of different pre-treatment in terms of reducing sugar yields demonstrates that 3.62, 2.88, 2.53 and 7.3 g/L of reducing sugar was obtained in acid catalysis, thermoalkaline, ultrasonication and enzymatic pre-treatment, respectively. However in crude macroalgae only 0.6 g/L of reducing sugar was given. After anaerobic digestion, the enzymatic hydrolysis was demonstrated the best biogas yield than other pre-treatment which reached 626.5 mL/g COD int with 62.65% of biodegradability. The best demonstrated method which uses crude broth of Aspergillus niger showed an effective and environmentally friendly strategy for enhancing the biogas production yields after the anaerobic digestion. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Bioresource Technology 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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RecordInfo BibRecord:
  BibEntity:
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      – Type: doi
        Value: 10.1016/j.biortech.2015.03.108
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 205
    Subjects:
      – SubjectFull: Ultrasonics
        Type: general
      – SubjectFull: Alkaline earth metals
        Type: general
      – SubjectFull: Enzymatic analysis
        Type: general
      – SubjectFull: Anaerobic digestion
        Type: general
      – SubjectFull: Ulvaceae
        Type: general
      – SubjectFull: Biogas production
        Type: general
    Titles:
      – TitleFull: Evaluation of ultrasonic, acid, thermo-alkaline and enzymatic pre-treatments on anaerobic digestion of Ulva rigida for biogas production.
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            NameFull: Karray, Raida
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            NameFull: Hamza, Manel
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            NameFull: Sayadi, Sami
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            – D: 01
              M: 07
              Text: Jul2015
              Type: published
              Y: 2015
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              Value: 187
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            – TitleFull: Bioresource Technology
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