Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste.

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Bibliographic Details
Title:	Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste.
Authors:	Ahmad, Eka Fitriani^1,2, Lestari, Puji³ ekak3@polteknaker.ac.id, Oginawati, Katharina³, Yulizar, Yoki⁴, Sianturi, Julinton^5,6,7, 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]
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Database:	Engineering Source

Description
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]
ISSN:	19782993
DOI:	10.9767/bcrec.20537