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Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste.

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Title: Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste.
Authors: Ahmad, Eka Fitriani1,2, Lestari, Puji3 ekak3@polteknaker.ac.id, Oginawati, Katharina3, Yulizar, Yoki4, Sianturi, Julinton5,6,7, Munir, Muhammad Miftahul8, Adawiah, Adawiah4
Source: Bulletin of Chemical Reaction Engineering & Catalysis. Apr2026, Vol. 21 Issue 1, p128-136. 9p.
Subjects: Delignification, Anthraquinones, Agricultural wastes, Paper industry, Cellulose, Sodium hydroxide
Abstract: This study investigates the role of anthraquinone (AQ) in decomposing coconut husk waste, specifically collected from Banten, to produce pure a-cellulose pulp. The process used sodium hydroxide (NaOH) at 10%, 15%, and 20% concentrations, with 0.1 g of AQ added as a catalyst, and a waste-to-liquid ratio of 1:8 throughout. The goal is to accelerate lignin degradation while protecting cellulose in the material, thereby yielding higher-quality pulp. The Banten coconut husk analysis showed an a-cellulose content of 30.38%. Higher NaOH concentrations reduced pulp yield but increased lignin removal, indicated by lower kappa numbers. AQ addition enhanced lignin removal and preserved cellulose compared to the absence of AQ. The optimal outcome was achieved with 15% NaOH and 0.1 g AQ, balancing lignin removal and cellulose preservation. These findings indicate that anthraquinone can support sustainable pulp production from agricultural waste. [ABSTRACT FROM AUTHOR]
Copyright of Bulletin of Chemical Reaction Engineering & Catalysis is the property of Universitas Diponegoro 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.)
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  Data: Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste.
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  Data: <searchLink fieldCode="AR" term="%22Ahmad%2C+Eka+Fitriani%22">Ahmad, Eka Fitriani</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lestari%2C+Puji%22">Lestari, Puji</searchLink><relatesTo>3</relatesTo><i> ekak3@polteknaker.ac.id</i><br /><searchLink fieldCode="AR" term="%22Oginawati%2C+Katharina%22">Oginawati, Katharina</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Yulizar%2C+Yoki%22">Yulizar, Yoki</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Sianturi%2C+Julinton%22">Sianturi, Julinton</searchLink><relatesTo>5,6,7</relatesTo><br /><searchLink fieldCode="AR" term="%22Munir%2C+Muhammad+Miftahul%22">Munir, Muhammad Miftahul</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22Adawiah%2C+Adawiah%22">Adawiah, Adawiah</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Chemical+Reaction+Engineering+%26+Catalysis%22">Bulletin of Chemical Reaction Engineering & Catalysis</searchLink>. Apr2026, Vol. 21 Issue 1, p128-136. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Delignification%22">Delignification</searchLink><br /><searchLink fieldCode="DE" term="%22Anthraquinones%22">Anthraquinones</searchLink><br /><searchLink fieldCode="DE" term="%22Agricultural+wastes%22">Agricultural wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Paper+industry%22">Paper industry</searchLink><br /><searchLink fieldCode="DE" term="%22Cellulose%22">Cellulose</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium+hydroxide%22">Sodium hydroxide</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates the role of anthraquinone (AQ) in decomposing coconut husk waste, specifically collected from Banten, to produce pure a-cellulose pulp. The process used sodium hydroxide (NaOH) at 10%, 15%, and 20% concentrations, with 0.1 g of AQ added as a catalyst, and a waste-to-liquid ratio of 1:8 throughout. The goal is to accelerate lignin degradation while protecting cellulose in the material, thereby yielding higher-quality pulp. The Banten coconut husk analysis showed an a-cellulose content of 30.38%. Higher NaOH concentrations reduced pulp yield but increased lignin removal, indicated by lower kappa numbers. AQ addition enhanced lignin removal and preserved cellulose compared to the absence of AQ. The optimal outcome was achieved with 15% NaOH and 0.1 g AQ, balancing lignin removal and cellulose preservation. These findings indicate that anthraquinone can support sustainable pulp production from agricultural waste. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Bulletin of Chemical Reaction Engineering & Catalysis is the property of Universitas Diponegoro 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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        Value: 10.9767/bcrec.20537
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        Text: English
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      – SubjectFull: Anthraquinones
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      – SubjectFull: Agricultural wastes
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      – SubjectFull: Sodium hydroxide
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      – TitleFull: Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste.
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              Text: Apr2026
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              Y: 2026
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