Recovery of carboxylic acids produced during dark fermentation of food waste by adsorption on Amberlite IRA-67 and activated carbon

Yousuf, Ahasa; Bonk, Fabian; Bastidas‐Oyanedel, Juan‐Rodrigo; Schmidt, Jens Ejbye

doi:10.1016/j.biortech.2016.02.035

Cited by 79 publications

(51 citation statements)

References 12 publications

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“…On the other hand, a strongly basic adsorbent like AMB400, which is effective at pH 5.0, is more recommended for in situ extraction of lactic acid from a fermenter [20]. The results from this study were further validated by the observations from previous studies, where GAC as well as the weakly basic resins were effective in adsorbing lactic acid at a pH 2.0 [16,18,22,25] and strongly basic resins were effective at a pH 5.0 [20,35]. AMB400 is a strongly basic resin that has a quaternary ammonium as functional group with a positive charge and can thus form ionic bonds with the lactate ion.…”

Section: Effect Of Ph and Adsorbent Dose On The Lactic Acid Adsorptiosupporting

confidence: 76%

“…The effect of the lactic acid concentration was tested for 9 different lactic acid concentrations, varying between 1.5 and 36.3 g/L. This range was particularly selected to represent the lactic acid production from various homolactic or heterolactic fermentation processes with low concentration of lactic acid in the fermentation broth [8,18].…”

Section: Experimental Designmentioning

confidence: 99%

“…RLX425 is a weakly-basic resin that has a pyridine functional group and the lone electron pair of the nitrogen atom allows it to form hydrogen bonds with the lactate ion [12]. Both GAC and the RLX425 resin are effective at a low pH (2.0), thus their use would require a post fermentation process with acidification of the medium below the standard pH value (4.5-6.5) that occurs during dark and capnophilic lactic fermentation [18,25]. On the other hand, a strongly basic adsorbent like AMB400, which is effective at pH 5.0, is more recommended for in situ extraction of lactic acid from a fermenter [20].…”

Section: Effect Of Ph and Adsorbent Dose On The Lactic Acid Adsorptiomentioning

confidence: 99%

“…A wide range of anionic resins are commercially available with various functional groups and support matrices, which makes the adsorption process more flexible under various operating conditions. The adsorption capacity and efficiency are influenced by various factors such as the properties of the adsorbent (porosity, surface area, particle size and functional group), the adsorbate (polarity, pK a , molecular weight, structure and solute concentration) and the operating conditions (contact time, pH, temperature and mixing speed) [18].…”

Section: Introductionmentioning

confidence: 99%

“…Several anionic adsorbents such as Amberlite ® IRA-67 (Sigma Aldrich SRL, Milan, Italy) [18], IRA-92 [19], IRA-400 [20], IRA-425 [21] and a non-polar adsorbent like activated carbon [18,22] have been studied for lactic or organic acids adsorption from a fermentation broth at room temperature. Most of the anionic resins are non-toxic to microorganisms and can thus be used directly in the fermenter [23].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption Behaviour of Lactic Acid on Granular Activated Carbon and Anionic Resins: Thermodynamics, Isotherms and Kinetic Studies

et al. 2017

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Solid-liquid extraction (adsorption or ion exchange) is a promising approach for the in situ separation of organic acids from fermentation broths. In this study, a diluted concentration of lactic acid (<10 g/L) separation from a model fermentation broth by granular activated carbon (GAC) as well as weak (Reillex ® 425 or RLX425) and strong (Amberlite ® IRA-400 or AMB400) base anion exchange resins under various operating conditions was experimentally investigated. Thermodynamic analysis showed that the best lactic acid adsorption performances were obtained at a pH below the pK a value of lactic acid (i.e., 3.86) for GAC and RLX425 by physical adsorption mechanism and above the pK a value for the AMB400 resin by an ion exchange mechanism, respectively. The adsorption capacity for GAC (38.2 mg/g) was the highest, followed by AMB400 (31.2 mg/g) and RLX425 (17.2 mg/g). As per the thermodynamic analysis, the lactic acid adsorbed onto GAC and RLX425 through a physical adsorption mechanism, whereas the lactic acid adsorbed onto AMB400 with an ion exchange mechanism. The Langmuir adsorption isotherm model (R 2 > 0.96) and the pseudo-second order kinetic model (R 2~1 ) fitted better to the experimental data than the other models tested. Postulating the conditions for the real fermentation broth (pH: 5.0-6.5 and temperature: 30-80 • C), the resin AMB400 represents an ideal candidate for the extraction of lactic acid during fermentation.

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Section: Effect Of Ph and Adsorbent Dose On The Lactic Acid Adsorptiosupporting

confidence: 76%

Section: Experimental Designmentioning

confidence: 99%

Section: Effect Of Ph and Adsorbent Dose On The Lactic Acid Adsorptiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption Behaviour of Lactic Acid on Granular Activated Carbon and Anionic Resins: Thermodynamics, Isotherms and Kinetic Studies

et al. 2017

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Adsorptive separation of propionic acid from aqueous medium using efficient anion exchange resins in batch and fixed bed column systems

Marti,

Isik,

Zeidan

2024

Can J Chem Eng

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The recovery of propionic acid (PA) from aqueous medium using a strongly basic, Lewatit M‐600 (LM‐600), and a weakly basic, Lewatit MP‐62 (LMP‐62), anion exchanger was investigated. Medium conditions such as pH, temperature, PA concentration, and resin dose affected the performance of the process. The highest capacities were achieved at pH 5 and 2 with LM‐600 and LMP‐62, respectively. Equilibrium was reached in 35 min, and the process followed the pseudo‐second‐order kinetics for both anion exchangers. LMP‐62 was more effective at pH values lower than 5. The exothermic process was found to be spontaneous. The maximum capacities of the strong and weak basic exchangers in batch experiments were 135.7 and 363 mg/g, respectively. However, the breakthrough capacities obtained in fixed bed systems were lower than those attained in batch systems (94.75 and 123.73 mg/g for LM‐600 and LMP‐62, respectively), and the column was successfully regenerated using 0.6 M NaOH. The Freundlich isotherm model yielded the highest determination coefficients in the isotherm analysis, suggesting that physical forces between PA and resins primarily drive the process.

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Methacrylonitrile‐based adsorbents for recovery of VFAs from fermentation broth

Elhami,

Ronka,

Schuur

2024

J of Chemical Tech & Biotech

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BACKGROUNDAdsorption is a promising affinity separation technique to target a sorbate in extremely dilute solutions. In this work, methacrylonitrile (MAN)‐functionalized resins were investigated to recover volatile fatty acids (VFAs) from a mimicked fermentation broth as an alternative for the already known amine‐based resins and non‐functionalized poly(styrene‐divinylbenzene) (PS‐DVB), aiming for high VFA capacity and selectivity.RESULTSNext to comparison with commercial PS‐DVB resin, also several PS‐DVB resins were synthesized as non‐functionalized analogues for the new MAN‐functionalized resins. For MAN‐functionalized resins, the maximum equilibrium VFA loading of about 153 (g acid/kg adsorbent) was found, which is higher than the 125 (g acid/kg adsorbent) for the PS‐DVB non‐functionalized resins. The water uptake of the PS‐DVB resins was with 0.53–0.87 (g water/g adsorbent) significantly lower than for the MAN‐DVB resins taking up 0.99–1.85 (g water/g adsorbent).CONCLUSIONOverall, the MAN‐functionalized adsorbents retained higher loading capacity for corresponding acid, compared to the PS‐DVB resins, while also taking in more water. Acid uptake is due to the hydrogen bonding between the nitrile groups of the resins with carboxyl group of the acids. Moreover, none of the adsorbents displayed an affinity towards the salts present in the fermentation broth. © 2024 The Author(s). Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

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Recovery of carboxylic acids produced during dark fermentation of food waste by adsorption on Amberlite IRA-67 and activated carbon

Cited by 79 publications

References 12 publications

Adsorption Behaviour of Lactic Acid on Granular Activated Carbon and Anionic Resins: Thermodynamics, Isotherms and Kinetic Studies

Adsorption Behaviour of Lactic Acid on Granular Activated Carbon and Anionic Resins: Thermodynamics, Isotherms and Kinetic Studies

Adsorptive separation of propionic acid from aqueous medium using efficient anion exchange resins in batch and fixed bed column systems

Methacrylonitrile‐based adsorbents for recovery of VFAs from fermentation broth

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