Adsorption and Selective Recovery of Citric Acid with Poly(4‐vinylpyridine)

Bergh, Matthias Van den; Voorde, Ben Van de; Vos, Dirk De

doi:10.1002/cssc.201701672

Cited by 12 publications

(13 citation statements)

References 24 publications

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“…However, in addition to citric acid, solvent extraction tends to extract impurities contained in the liquors, so the liquors must contain low amounts of impurities, necessitating further optimization of the process conditions. Alternatively, the use of bipolar membrane electrodialysis, 58 adsorption with poly(4-vinylpyridine), 59 reactive extraction, 60 and other processes 61 have also been investigated.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Cellulose Nanocrystals from Sugar Cane Bagasse Using Organic and/or Inorganic Acids: Techno-Economic Analysis and Life Cycle Assessment

Bondancia

Batista

Aguiar

et al. 2022

ACS Sustainable Chem. Eng.

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The isolation of cellulose nanocrystals (CNCs) by organic acid hydrolysis can contribute to reducing the extensive use of mineral acids, but aspects related to performance, cost effectiveness, and sustainability still need to be addressed. Here, techno-economic analysis (TEA) and life cycle assessment (LCA) were performed to evaluate the production of CNCs using organic and/or inorganic acid hydrolysis, in the context of a sugar cane biorefinery. CNCs were extracted from sugar cane bagasse using sulfuric acid (S-CNC), citric acid (Cit-CNC), and their combination (Cit-S-CNC). The nanodimensional structures were highly dependent on the type of acid used, but all the conditions resulted in nanostructures with CNC characteristics. The minimum product selling price values calculated by TEA for Cit-CNC and Cit-S-CNC were 34.0% and 37.2% higher, respectively, compared to S-CNC, mainly due to the high cost of citric acid recovery. The citric acid hydrolysis and recovery steps had substantial environmental impacts, accounting for up to ∼58% of the gobal warming potential values for Cit-CNC and Cit-S-CNC, which were more than 2fold higher than for S-CNC. These findings showed the importance of using TEA and LCA tools to support decision making in the selection of nanocellulose isolation routes in future biorefineries.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Cellulose Nanocrystals from Sugar Cane Bagasse Using Organic and/or Inorganic Acids: Techno-Economic Analysis and Life Cycle Assessment

Bondancia

Batista

Aguiar

et al. 2022

ACS Sustainable Chem. Eng.

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“…As the resin is an adsorbent having an organic polymeric matrix with weak basic groups, the affinity depends on the interaction of the solute with the polymeric matrix and with the basic groups. The interaction with the polymeric matrix is produced for van der Waals-type dispersive forces, and the interaction with the acidic groups occurs through the acidic protons of the solute . Dispersive forces increase with molecular weight, and acid–base interactions increase with solute acidity.…”

Section: Resultsmentioning

confidence: 99%

“…The affinity reduction of formic acid in the mixture can be attributed to the acid mixture’s higher pH concerning the pH of formic acid as a single solute. There is less undissociated formic acid in the mixture and thus less interaction with the basic centers of the resin …”

Section: Resultsmentioning

confidence: 99%

Recovery of a Succinic, Formic, and Acetic Acid Mixture from a Model Fermentation Broth by Simulated Moving Bed Adsorption with Methanol as a Desorbent

Santos

Delgado

Águeda

et al. 2021

Ind. Eng. Chem. Res.

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This work aims to study the recovery of succinic acid, formic acid, and acetic acid from a model fermentation broth by adsorption using a commercial polyvinylpyridine (PVP) resin (Reillex 425), with methanol as the desorbent. A theoretical model has been developed to describe the adsorption/ desorption dynamics of succinic acid/water, formic acid/water, and succinic acid/formic acid/acetic acid/glucose/methanol/water mixtures in a fixed bed of commercial resin. The model has been used to design and optimize a simulated moving bed process to recover acids from a model fermentation broth using the triangle theory and volume separation method. It is possible to recover 95% of the acids, with 99.9% purity, with a productivity of 24.737 kg m solid −3 h −1 and a desorbent consumption of 0.0901 m 3 kg −1 . The acids are obtained free of watersoluble impurities and water, mixed with methanol, and can be subsequently separated or used directly in esterification processes with methanol.

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“…The fermented samples were first centrifuged at 3000 rpm for 20 minutes to remove biomass particles, and the supernatant was collected for purification. The chromatography process followed the procedure performed by Van den Bergh [7]. A total of 6.94 g of poly (4-vinyl pyridine) resin was immersed in 50 mL of the supernatant and was stirred for 2 hours at room temperature to reach equilibrium.…”

Section: Ion Exchange Chromatographymentioning

confidence: 99%

Scale-up of citric acid production by utilizing rice husk waste and purification using ion exchange chromatography

Siagian¹,

Manurung²,

Martgrita³

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Citric acid is one of the essential organic acids in human life and rice husk has the potential to be used as a substrate because it contains about 28.6-43.3% cellulose, and its use, does not compete with human needs. This research aims to increase citric acid production by using rice husk as a substrate, with a working volume of 2000 mL. In this study, it produced citric acid using submerged fermentation and Aspergillus niger at 22.42% w/v rice husk conditions, 10% w/v sucrose, 3% v/v methanol, and 400 rpm agitation. The results showed that the citric acid pH value on day 18 of fermentation was 1.9, and the concentration of citric acid after purification was 162.667 g/L, while the concentration of citric acid before purification was 148.639 g/L. The specific growth rate of Aspergillus niger obtained was 0.0863 cells/day, and the rate of reducing sugar consumption was 0.1283 g/day. The yield of Aspergillus niger biomass produced is 1.1258 cells for each g of reducing sugar, and the yield of citric acid production is 16.8144 g for each g of cell and 18.9301 g for each g of reducing sugar.

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Adsorption and Selective Recovery of Citric Acid with Poly(4‐vinylpyridine)

Cited by 12 publications

References 24 publications

Cellulose Nanocrystals from Sugar Cane Bagasse Using Organic and/or Inorganic Acids: Techno-Economic Analysis and Life Cycle Assessment

Cellulose Nanocrystals from Sugar Cane Bagasse Using Organic and/or Inorganic Acids: Techno-Economic Analysis and Life Cycle Assessment

Recovery of a Succinic, Formic, and Acetic Acid Mixture from a Model Fermentation Broth by Simulated Moving Bed Adsorption with Methanol as a Desorbent

Scale-up of citric acid production by utilizing rice husk waste and purification using ion exchange chromatography

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