Change in the Crystallinity of Wheat Straw during Ozone Treatment

Ben’ko, E. M.; Chuhchin, D. G.; Малков, А. В.; Vydrina, Irina; Новожилов, Е. В.; Лунін, В. В.

doi:10.1134/s0036024420060059

Cited by 3 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although a correlation between Icr and glucose yield was not found (p > 0.05), which agrees with Benko et al [48], it seems that enzymatic hydrolyzability could be enhanced via combined reduction in the lignin and hemicellulose content, which is related to an increase in the Icr index and not merely the reduction in the crystallinity of cellulose [21].…”

Section: Xrd Analysissupporting

confidence: 83%

“…Overall, it has been suggested the increase in crystallinity could limit enzymatic hydrolysis [47], but in other cases, it could improve enzymatic susceptibility, depending on the lignin content of material [39]. Although a correlation between I cr and glucose yield was not found (p > 0.05), which agrees with Benko et al [48], it seems that enzymatic hydrolyzability could be enhanced via combined reduction in the lignin and hemicellulose content, which is related to an increase in the I cr index and not merely the reduction in the crystallinity of cellulose [21].…”

Section: Xrd Analysissupporting

confidence: 82%

See 1 more Smart Citation

Integrated Ozonation-Enzymatic Hydrolysis Pretreatment of Sugarcane Bagasse: Enhancement of Sugars Released to Expended Ozone Ratio

et al. 2020

View full text Add to dashboard Cite

The combined effects of three key ozonation process parameters on the integrated ozonation-enzymatic hydrolysis pretreatment of sugarcane bagasse (SCB) were investigated, with emphasis on the relationship between sugar release and ozone consumption. A lab-scale fixed bed reactor was employed for ozonation at varying ozone doses (50, 75 and 100 mg O3/g SCB), particle sizes (420, 710 and 1000 µm) and moisture contents (30, 45 and 60% w/w) in multifactorial experiments, keeping a residence time of 30 min. The ozonated SCB showed a reduction in the content of acid-insoluble lignin from 26.6 down to 19.1% w/w, while those of cellulose and hemicellulose were retained above 45.5 and 13.6% w/w, with recoveries of 100–89.9 and 83.5–72.7%, respectively. Ozone-assisted enzymatic hydrolysis allowed attaining glucose and xylose yields as high as 45.0 and 37.8%, respectively. The sugars released/ozone expended ratio ranged between 2.3 and 5.7 g sugars/g O3, being the higher value achieved with an applied ozone input of 50 mg O3/g SCB and SCB with 420 µm particle size and 60% moisture. Such operating conditions led to efficient ozone utilization (<2% unreacted ozone) with a yield of 0.29 g sugars/g SCB. Overall, the amount of sugars released relative to the ozone consumed was improved, entailing an estimated cost of ozonation of USD 34.7/ton of SCB, which could enhance the profitability of the process.

show abstract

Section: Xrd Analysissupporting

confidence: 83%