Typical conversion of lignocellulosic biomass into reducing sugars using dilute acid hydrolysis and alkaline pretreatment

Yu Loong Loow, Ta Yeong Wu, Jamaliah Md Jahim, Abdul Wahab Mohammad, Wen Hui Teoh

Research output: Contribution to journalReview article

91 Citations (Scopus)

Abstract

The development and production of fossil fuel alternatives have become one of the main focal points in recent investigations. Lignocellulosic biomass is a renewable source of fermentable sugars for second-generation biofuels and chemicals via biotechnological pathways. However, the presence of lignin and hemicellulose in lignocellulosic biomass makes it difficult for the biomass to be hydrolyzed or digested during fermentation. Thus, effective biomass pretreatment is vital. The present review shows that chemical pretreatment is the current preferred method to obtain high sugar yields at low cost, with dilute acid and alkaline hydrolysis as the two most reported technologies. Dilute acid favours hydrolysis of the hemicelluloses whereas alkaline hydrolysis targets the lignin fraction. Both methods have merits and demerits, and have been combined with other treatments such as hydrothermal and enzymatic hydrolysis. Further investigation is required to improve the pretreatment processes and to ensure the economic viability of bioconversion.

Original languageEnglish
Article numberA1491
Pages (from-to)1491-1520
Number of pages30
JournalCellulose
Volume23
Issue number3
DOIs
Publication statusPublished - 1 Jun 2016

Fingerprint

Sugars
Hydrolysis
Biomass
Acids
Lignin
Bioconversion
Enzymatic hydrolysis
Biofuels
Fossil fuels
Fermentation
Economics
Costs
hemicellulose

Keywords

  • Acid
  • Alkali
  • Biomass valorization
  • Cellulose
  • Hemicellulose
  • Lignin

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Typical conversion of lignocellulosic biomass into reducing sugars using dilute acid hydrolysis and alkaline pretreatment. / Loow, Yu Loong; Wu, Ta Yeong; Md Jahim, Jamaliah; Mohammad, Abdul Wahab; Teoh, Wen Hui.

In: Cellulose, Vol. 23, No. 3, A1491, 01.06.2016, p. 1491-1520.

Research output: Contribution to journalReview article

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AU - Wu, Ta Yeong

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AU - Teoh, Wen Hui

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