A method for concentration of monosaccharide and removal of inhibitors during hydrolysate pretreatment for improved bioethanol production

Chen, Chenghan; Ma, Kedong; Zhu, Qili; Tan, Furong; Wang, Yanwei; He, Mingxiong; Hu, Guangyuan

doi:10.1016/j.jclepro.2020.120999

Cited by 12 publications

(8 citation statements)

References 37 publications

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“…When treated with low pH and high concentration of Na2SO4 for 35 min, 90 per of the inhibitors could be removed. Chen et al (2020a) used reverse osmosis (RO) membrane to simultaneously concentrate sugar and remove inhibitors, and the results showed that the removal rates of furfural and acetic acid reached 51.6% and 77.7%, respectively. This method has a great application prospect in the production of bioethanol.…”

Section: Membrane Separation Methodsmentioning

confidence: 99%

Production and detoxification of inhibitors during the destruction of lignocellulose spatial structure

Luo

Zeng

Zhong

et al. 2021

BioRes

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Lignocellulosic biomass is a renewable resource that is widely abundant and can be used to produce biofuels such as methanol and ethanol. Because biofuels have the potential to alleviate shortages of energy in today’s world, they have attracted much research attention. The pretreatment of lignocellulose is an important step in the conversion of biomass products. The pretreatment can destroy the crosslinking effect of lignin and hemicellulose on cellulose, remove lignin, degrade hemicellulose, and change the crystal structure of cellulose. The reaction area between the enzyme and the substrate is enlarged, and the yield of subsequent enzymatic hydrolysis and microbial fermentation products is significantly increased. Conventional pretreatment methods help convert lignocellulosic material to sugars, but the treatments also produce some inhibitors, which are mainly organic acids, aldehydes, phenols, and other substances. They may affect the subsequent saccharification and growth of fermentation microorganisms, thereby reducing the bioconversion of the lignocellulose. It is therefore necessary to take effective means of detoxification. This paper reviews lignocellulose pretreatment methods, with an emphasis on inhibitors and their management. A summary is provided of detoxification methods, and the future use of lignocellulosic biomass for fuels prospects.

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Section: Membrane Separation Methodsmentioning

confidence: 99%

Production and detoxification of inhibitors during the destruction of lignocellulose spatial structure

Luo

Zeng

Zhong

et al. 2021

BioRes

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“…On the other hand, electrocatalytic GOR was used to replace oxygen evolution reaction (OER) in OER involved electrolysis, such as water splitting, CO 2 reduction reaction (CO 2 RR), and N 2 reduction reaction (NRR) (Figure 1b). [17f,26,38] Because of the lower oxidation potential of GOR, [2d] energy‐saving fuel molecules can be obtained in the cathode, and the value‐added fine chemicals can be produced in anode. Numerous studies have been reported to replace OER with GOR in water electrolysis to obtain energy‐saving hydrogen production.…”

Section: Electrochemical Conversion Of Glycerolmentioning

confidence: 99%

“…[ 1 ] As alternatives to gasoline and diesel, biodiesel and bioethanol have attracted more and more attentions because of the advantages of renewability, eco‐friendly, and rich sources. [ 2 ] Crude glycerol accounts for 10% (w/w) or 7–8% (w/w) as a by‐product in the production process for biodiesel and bioethanol production, respectively ( Scheme 1 ). [ 3 ] With the steadily growth of the production of biomass fuels, the influx of glycerol into market caused an oversupply in the global glycerol and, thus, caused the price of glycerol to plummet.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Electrocatalytic Glycerol Oxidation

et al. 2020

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Glycerol, as the major by‐product of biodiesel, can be oxidized into diverse value‐added chemical products via either traditional chemical methods or electrochemical routes. Electrocatalytic glycerol oxidation reaction (GOR) driven by renewable‐derived electricity (e.g., wind and solar) is a promising pathway for fine chemicals production. In an electrochemical cell, GOR can be coupled with various cathodic reactions, including hydrogen evolution reaction (HER), CO2 reduction reaction (CO2RR), and oxygen reduction reaction (ORR); in this manner, different benefits of either energy effectiveness or additional value‐added products can be obtained depending on the cathode reduction reaction selected. Comprehensively understanding of electrocatalytic GOR and the associated processes is of great significance to promote its industrial application. Herein, recent progress of GOR is focused on. The background of biomass‐derived glycerol valorization to energy and value‐added chemicals as well as the electrochemical conversion techniques via GOR is introduced. Then, the electrocatalytic reaction pathways, the potential application of GOR, and the measurement method for products are also discussed and summarized. Special emphasis is put on the design and the development of high‐selectivity and high‐activity electrocatalysts for GOR. Finally, the challenges and the future prospects in the fields of GOR are highlighted.

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“…e observed retention is displayed as R o and characterizes the ability of the R o membrane to retain a component, where the greater the R o value, the greater the difficulty to pass through the membrane. R o can be expressed by the following equation [16]:…”

Section: Concentration Experimentmentioning

confidence: 99%

A Novel Mass Transfer Model to Describe the Separation Process in Reverse Osmosis of Glucose

Chen

Wang

Tan

et al. 2021

International Journal of Chemical Engineering

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Basic and theoretical research on processes such as reverse osmosis (RO) is essential in the fermentation industry to improve production efficiency and reduce cost. Here, we focus on the RO concentration of glucose solutions. We constructed a mathematic model that incorporates various membrane and experimental parameters to characterize the mass transfer process of RO membrane and validated the model output with experimental data. Calculation results were highly consistent with the experimental data, demonstrating that this model can be useful for predicting the RO concentration process.

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A method for concentration of monosaccharide and removal of inhibitors during hydrolysate pretreatment for improved bioethanol production

Cited by 12 publications

References 37 publications

Production and detoxification of inhibitors during the destruction of lignocellulose spatial structure

Production and detoxification of inhibitors during the destruction of lignocellulose spatial structure

Recent Progress in Electrocatalytic Glycerol Oxidation

A Novel Mass Transfer Model to Describe the Separation Process in Reverse Osmosis of Glucose

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