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Ultrasound-assisted regeneration of ion exchange resins for efficient detoxification of lignocellulosic hydrolysate in biorefinery

Han, Jian ; Pyo, Sang Hyun LU and Xu, Yong (2025) In Renewable Energy 252.
Abstract

Resin adsorption is an effective technology for the fermentable sugar slurry detoxification in lignocellulosic biorefinery, but with the great limitation of the loss of resin capacity from inhibitor contamination and the extensive use of acid and base solutions for their regeneration. In this study, we developed a green and practical method with ultrasound assisting the depletion of poisoned resins in a reusable low concentration sodium hydroxide solution. The process, optimized at 50 % (325 W) ultrasonic power for 30 min, recovered 70 % resin adsorption capacity, balancing regeneration efficiency with minimal physical damage. SEM and FT-IR analyses were used to investigate the surface and chemical changes, while regeneration kinetics... (More)

Resin adsorption is an effective technology for the fermentable sugar slurry detoxification in lignocellulosic biorefinery, but with the great limitation of the loss of resin capacity from inhibitor contamination and the extensive use of acid and base solutions for their regeneration. In this study, we developed a green and practical method with ultrasound assisting the depletion of poisoned resins in a reusable low concentration sodium hydroxide solution. The process, optimized at 50 % (325 W) ultrasonic power for 30 min, recovered 70 % resin adsorption capacity, balancing regeneration efficiency with minimal physical damage. SEM and FT-IR analyses were used to investigate the surface and chemical changes, while regeneration kinetics were modeled using the Boyd diffusion model. The regenerated resins were evaluated through multiple adsorption-desorption cycles and fermentation of detoxified acidic corncob hydrolysate (ACH) for xylonic acid production using Gluconobacter oxydans. During three rounds of regeneration, the productivity of xylonic acid was maintained between 7.05 g/L/h and 8.77 g/L/h with 100 % yield, which was improved 25 %–55 % over ACH without resin detoxification. This approach not only enhances the economic feasibility of lignocellulosic hydrolysate detoxification but also advances the biotechnological production of high-value chemicals from lignocellulosic biomass.

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type
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publication status
published
subject
keywords
Lignocellulosic biorefinery, Lignocellulosic hydrolysate detoxification, Resin regeneration, Ultrasound assistance, Xylose fermentation
in
Renewable Energy
volume
252
article number
123568
publisher
Elsevier
external identifiers
  • scopus:105006843366
ISSN
0960-1481
DOI
10.1016/j.renene.2025.123568
language
English
LU publication?
yes
id
803c2729-6a0c-44dc-aa56-46abbcd3b7e8
date added to LUP
2025-07-16 09:17:07
date last changed
2025-07-16 09:17:30
@article{803c2729-6a0c-44dc-aa56-46abbcd3b7e8,
  abstract     = {{<p>Resin adsorption is an effective technology for the fermentable sugar slurry detoxification in lignocellulosic biorefinery, but with the great limitation of the loss of resin capacity from inhibitor contamination and the extensive use of acid and base solutions for their regeneration. In this study, we developed a green and practical method with ultrasound assisting the depletion of poisoned resins in a reusable low concentration sodium hydroxide solution. The process, optimized at 50 % (325 W) ultrasonic power for 30 min, recovered 70 % resin adsorption capacity, balancing regeneration efficiency with minimal physical damage. SEM and FT-IR analyses were used to investigate the surface and chemical changes, while regeneration kinetics were modeled using the Boyd diffusion model. The regenerated resins were evaluated through multiple adsorption-desorption cycles and fermentation of detoxified acidic corncob hydrolysate (ACH) for xylonic acid production using Gluconobacter oxydans. During three rounds of regeneration, the productivity of xylonic acid was maintained between 7.05 g/L/h and 8.77 g/L/h with 100 % yield, which was improved 25 %–55 % over ACH without resin detoxification. This approach not only enhances the economic feasibility of lignocellulosic hydrolysate detoxification but also advances the biotechnological production of high-value chemicals from lignocellulosic biomass.</p>}},
  author       = {{Han, Jian and Pyo, Sang Hyun and Xu, Yong}},
  issn         = {{0960-1481}},
  keywords     = {{Lignocellulosic biorefinery; Lignocellulosic hydrolysate detoxification; Resin regeneration; Ultrasound assistance; Xylose fermentation}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Renewable Energy}},
  title        = {{Ultrasound-assisted regeneration of ion exchange resins for efficient detoxification of lignocellulosic hydrolysate in biorefinery}},
  url          = {{http://dx.doi.org/10.1016/j.renene.2025.123568}},
  doi          = {{10.1016/j.renene.2025.123568}},
  volume       = {{252}},
  year         = {{2025}},
}