Recovery of lactic acid from the pretreated fermentation broth based on a novel hyper-cross-linked meso-micropore resin: Modeling

Controllable Synthesis of Styrene-divinylbenzene Adsorption Resins and the Effect of Textural Properties on Removal Performance of Fermentation Inhibitors from Rice Straw Hydrolysate

“…To improve the fermentability of dilute acid hydrolysates into biofuels or biochemicals, several treatment methods have been proposed to remove these inhibitors from the lignocellulosic hydrolysate, including physical methods (extraction, evaporation, and adsorption), chemical methods (overliming, alkaline detoxification, and reducing agents), biological methods (enzymatic and microbial detoxification), and combined treatment. , Among these methods, adsorption has been deemed to be one of the most convenient and effective methods due to its energy-saving and environmentally friendly characteristics, high efficiency, and easy handing . Furthermore, adsorption resins have drawn extensive attention to remove the fermentation inhibitors from the lignocellulosic hydrolysate, because of its unique structure and outstanding adsorption properties. − Styrene-divinylbenzene (St-DVB) adsorption resins were used to effectively adsorb small organic molecules such as furfural, 5-HMF, and ASL from the lignocellulosic hydrolysate. − However, the textural properties of the St-DVB adsorption resins often vary from the synthetic variable including the synthesis conditions (initiator, temperature, time of polymerization, etc.) and the type and amount of the main chemical compounds (monomers, crosslinker, and porogen), which have been deemed to be the most important factors. , To our knowledge, there is no published work that specially focused on the effect of textural properties on the fermentation inhibitors and pigments removal, as well as the sugar loss by St-DVB adsorption resin.…”

Separation of 5‐aminovalerate from its bioconversion liquid by macroporous adsorption resin: mechanism and dynamic separation

“…The peaks at 710 cm −1 and 814 cm −1 are evidence for aromatic CH in‐plane bending vibration. The bands at 1380 cm −1 and 1650 cm −1 may be ascribed to the stretching vibration of aromatic CN and in‐plane bending vibration of NH, respectively . This indicates that the phenolic hydroxyl group and phenylamine group were modified on the surface of AK‐1 resin and AK‐1 resin is a kind of weakly polar and hydrophobic resin.…”

“…, indicate that salts are hardly adsorbed on the resin, followed by 5‐AVA and that l ‐lysine is the most retained component. The desorption curves show that salts and most of the 5‐AVA can be eluted by the deionized water, whereas l ‐lysine can hardly be eluted due to the formation of the stable conjugated seven‐membered ring between l ‐lysine and the resin . Then 1 mol L –1 HCl was used to elute the residual 5‐AVA and l ‐lysine.…”

Separation of Cytidine 5′-Monophosphate and Guanosine 5′-Monophosphate Based on the Hyper-Cross-Linked Resin XDA-1 with pH Gradient Elution

“…The model predicted the breakthrough curves of lead, mercury, chromium, and arsenic ions very well in a fixed-bed packed with a kind of dry activated sludge. Song et al 20 developed the transport dispersive model with a lumped external and internal mass transfer coefficient, and the model described the breakthrough curves and chromatographic peaks of glucose, lactic acid, and acetic acid in a fixed-bed column packed with the hyper-crosslinked meso-micropore resin HD-06 fairly well. CMP and GMP are both weak electrolytes.…”