Fenton Reaction-Modified Corn Stover To Produce Value-Added Chemicals by Ultralow Enzyme Hydrolysis and Maleic Acid and Aluminum Chloride Catalytic Conversion

Han, Yachun; Jin, Caidi; Shuang, E; Liu, Jianglong; Zhang, Shen; Liu, Qingyu; Sheng, Kuichuan; Zhang, Ximing

doi:10.1021/acs.energyfuels.9b00983

Cited by 10 publications

(6 citation statements)

References 34 publications

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“…However, fungal metabolism of sugars does not occur with CMF treatment, and the resulting sugars and oligosaccharides produced can potentially be used in downstream fermentation or other industrial processes (Goodell et al, 2017). Furfurals and hydroxymethyl furfurals are typically not generated using Fenton chemistries with biomass substrates unless high heat is used, and further, Fenton chemistries have been used to reduce the amount of furfurals generated in biomass deconstruction (Yang et al, 2014(Yang et al, , 2019.…”

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confidence: 99%

Nanostructural Analysis of Enzymatic and Non-enzymatic Brown Rot Fungal Deconstruction of the Lignocellulose Cell Wall†

et al. 2020

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Brown rot (BR) decay mechanisms employ carbohydrate-active enzymes (CAZymes) as well as a unique non-enzymatic chelator-mediated Fenton (CMF) chemistry to deconstruct lignocellulosic materials. Unlike white rot fungi, BR fungi lack peroxidases for lignin deconstruction, and also lack some endoglucanase/cellobiohydrolase activities. The role that the CMF mechanism plays in “opening up” the wood cell wall structure in advance of enzymatic action, and any interaction between CMF constituents and the selective CAZyme suite that BRs possess, is still unclear. Expression patterns for CMF redox metabolites and lytic polysaccharide monooxygenase (LPMO–AA9 family) genes showed that some LPMO isozymes were upregulated with genes associated with CMF at early stages of brown rot by Gloeophyllum trabeum . In the structural studies, wood decayed by the G. trabeum was compared to CMF-treated wood, or CMF-treated wood followed by treatment with either the early-upregulated LPMO or a commercial CAZyme cocktail. Structural modification of decayed/treated wood was characterized using small angle neutron scattering. CMF treatment produced neutron scattering patterns similar to that of the BR decay indicating that both systems enlarged the nanopore structure of wood cell walls to permit enzyme access. Enzymatic deconstruction of cellulose or lignin in raw wood samples was not achieved via CAZyme cocktail or LPMO enzyme action alone. CMF treatment resulted in depolymerization of crystalline cellulose as attack progressed from the outer regions of individual crystallites. Multiple pulses of CMF treatment on raw wood showed a progressive increase in the spacing between the cellulose elementary fibrils (EFs), indicating the CMF eroded the matrix outside the EF bundles, leading to less tightly packed EFs. Peracetic acid delignification treatment enhanced subsequent CMF treatment effects, and allowed both enzyme systems to further increase spacing of the EFs. Moreover, even after a single pulse of CMF treatment, both enzymes were apparently able to penetrate the cell wall to further increase EF spacing. The data suggest the potential for the early-upregulated LPMO enzyme to work in association with CMF chemistry, suggesting that G. trabeum may have adopted mechanisms to integrate non-enzymatic and enzymatic chemistries together during early stages of brown rot decay.

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confidence: 99%

Nanostructural Analysis of Enzymatic and Non-enzymatic Brown Rot Fungal Deconstruction of the Lignocellulose Cell Wall†

et al. 2020

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“…The corn straw raw material contained cellulose 38.6%, hemicellulose 22.7%, and lignin 16.8%. Upon addition of (CTA)H2PW nanorods, 19.8% yield of glucose and 8.3% yield of xylose at 35.4% conversion were obtained at 150 °C for 12 h. Up to this point, the best yield of glucose directly from Fenton-modified corn straw was achieved as 47.2% upon the ultralow enzyme combined with maleic acid and aluminum chloride under the reaction conditions as 45 °C for 48 h (Yang et al 2019).…”

Section: Effect Of Different Catalysts On Cellulose Hydrolysismentioning

confidence: 93%

“…Beside polysaccharides, lignocellulose as corn straw had been used as feedstocks to produce value-added chemicals upon (CTA)H2PW nanorod. The carbohydrates and lignin contents in corn straw samples were determined by the National Renewable Energy Laboratory (NREL) standard analytical procedure (Yang et al 2019). The corn straw raw material contained cellulose 38.6%, hemicellulose 22.7%, and lignin 16.8%.…”

Section: Effect Of Different Catalysts On Cellulose Hydrolysismentioning

confidence: 99%

Mesoporous heteropolyacid nanorods for heterogeneous catalysis in polysaccharide conversion

Song

Zhang

et al. 2019

BioRes

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Mesoporous heteropolyacid (HPA) nanorods having a composition of [C16H33N(CH3)3]xH3-xPW12O40 ((CTA)xH3-xPW, x = 1, 2, and 3) were synthesized by surfactant encapsulation and were evaluated for their catalytic activity in cellulose hydrolysis. The (CTA)H2PW nanorods were found to be most active with 57.2% yield of 5-hydroxymethylfurfural (5-HMF) at ~100% conversion in water/methyl isobutyl ketone (MIBK) biphase, which was higher than (CTA)H2PW nanosphere at 140 °C for 11 h. The yields of 5-HMF and glucose were obtained as 4.5% and 54.3% at 160 °C for 8 h in water system, respectively. (CTA)H2PW nanorods showed higher tolerance to such feedstocks as lignocellulose, i.e. corn straw with 19.8% and 8.3% yields for glucose and xylose at 35.4% conversion in water. Moreover, (CTA)H2PW nanorods showed higher stability and long duration with ten times reuse. (CTA)H2PW nanorods presented higher efficiency and reusability in conversion of cellulosic biomass.

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“…Shortly after mixing the samples containing hydrogen peroxide with ferrous salt, hydroxyl radicals are produced. These radicals can cause damage and rapid degradation of cellulose and hemicellulose depending on the conditions applied (Yang et al, 2019). The high crystallinity index of corn stalk used in this study (76%) makes it harder for hydroxyl radicals to attack the solid cellulose structure, leaving the hemicellulose more susceptible to applied treatments.…”

Section: Fig 2 the Cellulose Crystallinity Index Of The Control Sampl...mentioning

confidence: 99%

Effect of non-thermal plasma on cellulose crystallinity and lignin content in corn stalks

Grbić¹,

Djukić‐Vuković²,

Mladenović³

et al. 2022

J Proc Ener Agri

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Lignocellulosic biomass is a cheap raw material that, thanks to its high carbohydrate content, can be used in fermentation to produce biofuels, biogas and other compounds. Its complex structure, including cellulose, hemicellulose and lignin, requires prior treatment of the biomass to facilitate hydrolysis to simple sugars. Today, biomass is only partially utilized and generates about 14% of the world's energy. This is because the most commonly used physical, chemical and physicochemical treatments are not sustainable. They are energy-consuming but still low in productivity and toxic inhibitors formed during these treatments could hinder later steps of fermentation. Biomass treatment with advanced oxidation techniques has great potential as an environmentally friendly, so-called "green" treatment. These processes generate reactive species (radicals, electrons, ions and peroxides) that attack cellulose, hemicellulose, and lignin components. In this work, the effects of non-thermal plasma, the Fenton process, and the combined treatment of corn stalks with non-thermal plasma/Fenton were compared. Grounded biomass of corn stalks was mixed with Fenton reagent and hydrogen peroxide at different ratios and subjected to non-thermal plasma treatment. Carbohydrate content was decreased in non-thermal plasma treated samples both with and without Fe2+. However, a specific biomass: Fe2+:H2O2 ratio was required to achieve the highest rate of lignocellulose decomposition. The cellulose and hemicellulose fractions were affected and reduced by the treatments studied but resulted in almost no changes in the cellulose crystallinity index. The lower lignin content and cellulose crystallinity allow for more efficient enzyme hydrolysis of the treated lignocellulose and new options for valorization in fermentations.

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Fenton Reaction-Modified Corn Stover To Produce Value-Added Chemicals by Ultralow Enzyme Hydrolysis and Maleic Acid and Aluminum Chloride Catalytic Conversion

Cited by 10 publications

References 34 publications

Nanostructural Analysis of Enzymatic and Non-enzymatic Brown Rot Fungal Deconstruction of the Lignocellulose Cell Wall†

Nanostructural Analysis of Enzymatic and Non-enzymatic Brown Rot Fungal Deconstruction of the Lignocellulose Cell Wall†

Mesoporous heteropolyacid nanorods for heterogeneous catalysis in polysaccharide conversion

Effect of non-thermal plasma on cellulose crystallinity and lignin content in corn stalks

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