A Novel Granular Activated Carbon Adsorption Method for Separation of Levulinic Acid from Formic Acid

Liu, Bao Jian; Liu, Shi Wang; Liu, Tie Bing; Mao, Jian Wei

doi:10.4028/www.scientific.net/amr.550-553.1691

Cited by 6 publications

(3 citation statements)

References 18 publications

(17 reference statements)

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“…Some methods of separation and purification of LA from preview literature could be applied in our experiments. A granular activated carbon (GAC) adsorption method for separation of lanthanum and formic acid was studied ( Liu et al, 2012 ). Kim et al also confirmed that LA could be effectively separated from 5-HMF by ED ( Kim et al, 2013 ).…”

Section: Resultsmentioning

confidence: 99%

Acid-Catalyzed Conversion of Cellulose Into Levulinic Acid With Biphasic Solvent System

Cai

Zhang

et al. 2021

Front. Plant Sci.

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In this work, acid-catalyzed conversion of cellulose into levulinic acid in a biphasic solvent system was developed. Compared to a series of catalysts investigated in this study, the Amberlyst-15 as a more efficient acid catalyst was used in the hydrolysis of cellulose and further dehydration of derived intermediates into levulinic acid. Besides, the mechanism of biphasic solvent system in the conversion of cellulose was studied in detail, and the results showed biphasic solvent system can promote the conversion of cellulose and suppress the polymerization of the by-products (such as lactic acid).The reaction conditions, such as temperature, time, and catalyst loading were changed to investigate the effect on the yield of levulinic acid. The results indicated that an appealing LA yield of 59.24% was achieved at 200°C and 180 min with a 2:1 ratio of Amberlyst-15 catalyst and cellulose in GVL/H2O under N2 pressure. The influence of different amounts of NaCl addition to this reaction was also investigated. This study provides an economical and environmental-friendly method for the acid-catalyzed conversion of cellulose and high yield of the value-added chemical.

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Section: Resultsmentioning

confidence: 99%

Acid-Catalyzed Conversion of Cellulose Into Levulinic Acid With Biphasic Solvent System

Cai

Zhang

et al. 2021

Front. Plant Sci.

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“…No 5-HMF and furfural was observed in the eluent, and the separation of LA and these two substances were achieved. The eluate contained a low concentration of formic acid, which can be further separated by activated C. Liu et al [36][37][38][39] used D301 anion exchange resin to remove substances such as sugars and 5-HMF, then decolorized the eluate by AB-8 macroporous resin, and finally separated LA and formic acid by a novel granular activated C column. In summary, the G10PTEPA resin realized a high decolorization rate and initially separated LA from hydrolysate, which simplified the purification process of LA.…”

Section: Elutionmentioning

confidence: 99%

Amino‐functionalized hyper‐cross‐linked resins for levulinic acid adsorption from sugarcane bagasse hydrolysate

Ji,

Shen,

Wang

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDLevulinic acid (LA) is an important biomass‐platform compound. The preparation of LA from biomass will inevitably produce many by‐products. However, there are few investigations focused on the separation and purification of LA from biomass hydrolysate. This study designed a series of hyper‐cross‐linked resins to adsorb LA from sugarcane bagasse hydrolysate, investigated the adsorption behavior of LA onto resin in a fixed‐bed system and established a relevant model to depict the adsorption process, which can provide reference for LA separation.RESULTSThe hyper‐cross‐linked resin G10PTEPA synthesized by poly(styrene‐divinylbenzene‐glycidyl methacrylate) resin G10 with the Friedel–Crafts reaction and amination reaction using tetraethylenepentamine (TEPA) had the best adsorption performance. The adsorption capacity of LA onto G10PTEPA in the sugarcane bagasse hydrolysate was 95.02 mg g−1, which was improved by 37% compared with G10. The maximum efficiency of the fixed‐bed onto G10PTEPA was 86.01% at flow rate of 0.6 mL min−1, with bed volume of 14 mL, fixed‐bed diameter of 2 cm, and feed LA concentration of 19.0 g · L−1. After elution by ethanol, a five‐fold increase in the concentration of LA with a purity of 80% was achieved. The Thomas model and the Yoon–Nelson model fitted well (R2 > 0.99) to the fixed‐bed adsorption behavior of LA onto G10PTEPA and can give accurate predictions.CONCLUSIONThe resin G10PTEPA was the best‐performing adsorbent for LA adsorption. Larger fixed‐bed diameter, higher flow rate and higher inflow concentration were beneficial to increase the mass transfer driving force. This study provides a potential adsorbent and theoretical guidance for LA separation. © 2023 Society of Chemical Industry.

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“…8 Although several recovery methods of 4-oxopentanoic acid from aqueous media are available, the separation of this acid by adsorption is limited, which is evident from the literature. A novel granular activated carbon was used to recover LA from formic acid elution by Liu et al 9 Adsorption equilibrium revealed that levulinic acid got satisfactorily adsorbed on the surface of activated carbon than formic acid. LA separation was achieved with high yield and better purity.…”

Section: Introductionmentioning

confidence: 99%

Separation of Levulinic Acid Using Polymeric Resin, Amberlite IRA-67

et al. 2019

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The adsorptive separation of levulinic acid (LA) from its aqueous solution was studied by using a commercial adsorbent and weakly basic anion exchange resin, Amberlite IRA-67 (IRA-67). The data were generated for equilibrium and kinetic studies, and to analyze the performance of IRA-67 on the removal efficiency. The equilibrium study was performed to see the effect of adsorbent quantity (0.25−1.5 g) and initial LA concentrations (2−4 g•L −1 ) at three different temperatures (298, 308, and 318 K). To determine the kinetics of adsorption process, concentration profile was achieved up to a time of 90 min at 298 K. It was observed that both the intake capacity (32−64 mg•g −1 ) and removal efficiency (6.75−72.5%) of IRA-67 were increased with an increase in the quantity of adsorbent (0.25−1.5 g) at 298 K. From the kinetics of adsorption, 50 min was considered as an equilibrium time. Different isotherm and kinetic models were used to determine the equilibrium and kinetic parameters of LA adsorption process. From the temperature study (298, 308, and 318 K), the thermodynamic properties were also estimated at three different LA concentrations.

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A Novel Granular Activated Carbon Adsorption Method for Separation of Levulinic Acid from Formic Acid

Cited by 6 publications

References 18 publications

Acid-Catalyzed Conversion of Cellulose Into Levulinic Acid With Biphasic Solvent System

Acid-Catalyzed Conversion of Cellulose Into Levulinic Acid With Biphasic Solvent System

Amino‐functionalized hyper‐cross‐linked resins for levulinic acid adsorption from sugarcane bagasse hydrolysate

Separation of Levulinic Acid Using Polymeric Resin, Amberlite IRA-67

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