Competitive adsorption of vanillin and syringaldehyde on a macro-mesopore polymeric resin: modeling

Cao, Hanfei; Ji, Yingchun; Zhou, Jingwei; Zhuang, Wei; Niu, Huanqing; Gao, Nan; Chen, Yong; Liu, Dong; Zhu, Chenjie; Chen, Xioachun; Ying, Hanjie; Wu, Jinglan

doi:10.1007/s00449-019-02140-7

Cited by 7 publications

(2 citation statements)

References 38 publications

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“…However, a study conducted by Cao H et al demonstrated the competitive adsorption behavior of vanillin and syringaldehyde in a binary mixture at an initial feed pH of 4.52 on nonionic styrene‐divinylbenzene adsorbent. In this scenario, both vanillin and syringaldehyde show a reduced loading compared to their single system, indicating the presence of competitive adsorption phenomena 65. To the best of our knowledge, the competitive and synergistic effects in the adsorption behavior of multi‐component mixtures have received limited attention and thus remain largely unexplored.…”

Section: Separation Of Monomers With Ceramic Membrane Filtration and ...mentioning

confidence: 98%

Separation and Purification of Vanillin and Syringaldehyde from an Oxidized Kraft Liquor – A Mini Review

Tarigan,

Ebrahimi

2024

Chemie Ingenieur Technik

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Lignin is one of the most abundant bio‐aromatic molecular resources, but it is currently underutilized for energy production in the pulp and paper industry. Unlocking the full potential of lignin could have a significant impact on reducing environmental pollution, increasing the use of renewable resources, and achieving environmentally beneficial economic growth. However, effective lignin valorization requires viable and integrated reaction and separation processes to produce high value monomeric phenolics, such as vanillin and syringaldehyde. The aim of this short review is to summarize the studies on different separation methods of lignin derivatives obtained from black liquor, including extraction, membrane filtration, chromatographic separation, and the combination technologies.

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Section: Separation Of Monomers With Ceramic Membrane Filtration and ...mentioning

confidence: 98%

Separation and Purification of Vanillin and Syringaldehyde from an Oxidized Kraft Liquor – A Mini Review

Tarigan,

Ebrahimi

2024

Chemie Ingenieur Technik

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“…The concentration of citric acid from the effluent was dynamically recorded until it reached the initial concentration. The breakthrough point (C t /C 0 = 0.05) and saturated point (C t /C 0 = 0.95) was measured and the breakthrough capacities (q b , mg/g) and saturated capacities (q s , mg/g) of citric acid on the resins were estimated by the following equations 26 : Comparing with precursor resins, there was a new moderate adsorption band located at 1705 cm −1 assigned to the carbonyl groups stretching resulting from oxidation of chloromethyl groups after the Friedel-Crafts reaction in the hyper-cross-linked resins 27 . Simultaneously, the strong vibration of the -CH 2 Cl groups (at 1265 cm −1 ) was greatly weakened 28 , which in accordant with the sharp decrease of the chlorine content shown in Table S2.…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Synthesis, adsorption and molecular simulation study of methylamine-modified hyper-cross-linked resins for efficient removal of citric acid from aqueous solution

Peng

Yang

Dai

et al. 2020

Sci Rep

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A series of methylamine-modified hyper-cross-linked resins were fabricated from chloromethylated polystrene-co-divinylbenzene by two continuous reactions (Friedel-Crafts alkylation and amination). the Bet surface area and pore volume of the as-prepared resins took a positive correlation to the reaction time and temperature during alkylation reaction while lessened during amination process. When running batch adsorption experiments for adsorption of citric acid, the methylamine-modified resin named HM-65-2 showed higher adsorption capacity of 136.3 mg/g and selectivity of 6.98 (citric/ glucose) than the precursor resins. The pseudo-second-order rate model fitted better than the pseudo-first-order model, implying the adsorption sites distributed on the resins surface tended to be heterogeneous. Subsequently, the interactions between citric acid and the resin were investigated by means of molecular simulation. Simulation result showed the addition of nitrogen-containing groups significantly enhanced the adsorption performance of citric acid. Lastly, the dynamic column experiments were performed to obtain the suitable operating conditions for the citric acid adsorption. Citric acid (CA, 2-hydroxypropane-1,2,3-tricarboxylic acid, C 6 H 8 O 7), as an important organic acid associated with thermoplastics fields in virtue of versatility, plays multiple roles in food, pharmaceutical, chemical or bio-processing industry etc. due to its favorable physico-chemical properties 1. Citric acid is mainly manufactured by the fermentation of carbohydrates by Aspergillus niger using submerged processes, which is relatively easy to achieve high yield and environmental friendly product 2. However, the recovery of citric acid from the fermentation broth is not straightforward. The conventional separation technique used in industry includes several batch steps increasing the production cost and generating a considerable amount of environmentally harmful waste 3. Some novel separation techniques, i.e., solvent extraction 4 , electro-dialysis 5 , membrane separation 6 , ion exchange 7 and adsorption 8 have been proposed for citric acid recovery and purification, among which adsorption has been considered to be one of the most efficient and simple method due to its wide application scope, energy-saving, and environmentally friendly. Most adsorbents selected for recovering citric acid are based on weak-base ion-exchangers 9 , which needs some harsh desorption conditions i.e. alkaline solutions and limits its practical application. Gluszcz et al. 10 studied the adsorption behaviors of different ion exchange resins for citric acid recovery from aqueous solutions and ascertained that the resin with a tertiary amine functional group was suitable for citric acid recovery. Juang et al. 11 explored the adsorption behaviors of citric acid on macroporous resins impregnated with tri-n-octylamine. Other adsorbents including hydroxyapatite 12 , oxides 13 and chitosan

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Biosorption of Phenolic Compounds in Lignocellulosic Biomass Biorefineries

et al. 2020

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Competitive adsorption of vanillin and syringaldehyde on a macro-mesopore polymeric resin: modeling

Cited by 7 publications

References 38 publications

Separation and Purification of Vanillin and Syringaldehyde from an Oxidized Kraft Liquor – A Mini Review

Separation and Purification of Vanillin and Syringaldehyde from an Oxidized Kraft Liquor – A Mini Review

Synthesis, adsorption and molecular simulation study of methylamine-modified hyper-cross-linked resins for efficient removal of citric acid from aqueous solution

Biosorption of Phenolic Compounds in Lignocellulosic Biomass Biorefineries

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