Economic evaluation and comparison of succinic acid and electricity co‐production from sugarcane bagasse and trash lignocelluloses in a biorefinery, using different pretreatment methods: dilute acid (H 2 SO 4 ), alkaline (NaOH), organosolv, ammonia fibre expansion (AFEX™), steam explosion (STEX), and wet oxidation

2019 ◽  
Vol 14 (1) ◽  
pp. 55-77 ◽  
Author(s):  
Mieke Nieder‐Heitmann ◽  
Kathleen Haigh ◽  
Janus Louw ◽  
Johann F. Görgens
Keyword(s):  
Economic Evaluation ◽  
Succinic Acid ◽  
Sugarcane Bagasse ◽  
Steam Explosion ◽  
Wet Oxidation ◽  
Dilute Acid

Study of the phenolic compounds formed during pretreatment of sugarcane bagasse by wet oxidation and steam explosion

Holzforschung ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 483-487 ◽  
Author(s):  
Carlos Martín ◽  
Helene B. Klinke ◽  
Marcelo Marcet ◽  
Luis García ◽  
Ena Hernández ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Sugarcane Bagasse ◽  
Steam Explosion ◽  
Total Content ◽  
Wet Oxidation ◽  
Aldehydes And Ketones ◽  
Alkaline Conditions ◽  
Acidic Conditions ◽  
High Concentrations ◽  
Ferulic Acids

Abstract The formation of phenolic compounds during pretreatment of sugarcane bagasse was investigated. Bagasse was pretreated by wet oxidation (WO) at 195°C during 15 min under either alkaline or acidic conditions and by steam explosion (STEX) at 205°C during 10 min. The total content of phenolic compounds in the prehydrolysates was determined spectrophotometrically. Under acidic and alkaline WO conditions, 3.8% (w/w) and 3% phenols were found, respectively. STEX gave rise to 1.9% phenols. Individual phenols were identified by GC-MS. Phenylpropanoid derivatives, such as p-coumaric and ferulic acids, accounted for more than 50% of the phenols identified in STEX prehydrolysates. In WO prehydrolysates, on the other hand, phenols lacking the propanoid side chain were predominant. Of the latter, p-hydroxybenzaldehyde was the most abundant phenol, with concentrations of 0.27% (acidic conditions) and 0.15% (alkaline conditions). As expected, high concentrations of oxidised compounds were generally observed in WO prehydrolysates, such as carboxylic acids, aldehydes and ketones. This is a true reflection of the oxidative conditions during WO pretreatment.

Combination of dilute acid and ionic liquid pretreatments of sugarcane bagasse for glucose by enzymatic hydrolysis

2013 ◽  
Vol 48 (12) ◽  
pp. 1942-1946 ◽  
Author(s):  
Li-Qun Jiang ◽  
Zhen Fang ◽  
Xing-Kang Li ◽  
Jia Luo ◽  
Suet-Pin Fan
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Hydrolysis ◽  
Sugarcane Bagasse ◽  
Dilute Acid

scholarly journals Ethanol Production from Sugarcane Bagasse Pretreated by Steam Explosion

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Isis Amores ◽  
Ignacio Ballesteros ◽  
Paloma Manzanares ◽  
Felicia Sáez ◽  
Georgina Michelena ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sugarcane Bagasse ◽  
Steam Explosion

Thermophilic hydrogen production from sugarcane bagasse pretreated by steam explosion and alkaline delignification

2015 ◽  
Vol 40 (19) ◽  
pp. 6296-6306 ◽  
Author(s):  
Regiane Priscila Ratti ◽  
Tiago Palladino Delforno ◽  
Isabel Kimiko Sakamoto ◽  
Maria Bernadete Amâncio Varesche
Keyword(s):  
Hydrogen Production ◽  
Sugarcane Bagasse ◽  
Steam Explosion ◽  
Alkaline Delignification

scholarly journals Effect of Subsequent Dilute Acid and Enzymatic Hydrolysis on Reducing Sugar Production from Sugarcane Bagasse and Spent Citronella Biomass

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Robinson Timung ◽  
Narendra Naik Deshavath ◽  
Vaibhav V. Goud ◽  
Venkata V. Dasu
Keyword(s):  
Enzymatic Hydrolysis ◽  
Sugarcane Bagasse ◽  
Crystallinity Index ◽  
Sem Analysis ◽  
Reducing Sugar ◽  
Dilute Acid Pretreatment ◽  
Crystalline Cellulose ◽  
Dilute Acid ◽  
Acid Pretreatment ◽  
Hydrolysis Of

This work was aimed at investigating the effect of process parameters on dilute acid pretreatment and enzymatic hydrolysis of spent citronella biomass (after citronella oil extraction) and sugarcane bagasse on total reducing sugar (TRS) yield. In acid pretreatment, the parameters studied were acid concentration, temperature, and time. At the optimized condition (0.1 M H2SO4, 120°C, and 120 min), maximum TRS obtained was 452.27 mg·g−1and 487.50 mg·g−1for bagasse and citronella, respectively. Enzymatic hydrolysis of the pretreated biomass usingTrichoderma reesei26291 showed maximum TRS yield of 226.99 mg·g−1for citronella and 282.85 mg·g−1for bagasse at 10 FPU, 50°C, and 48 hr. The maximum crystallinity index (CI) of bagasse and citronella after acid pretreatment obtained from X-ray diffraction analysis was 64.41% and 56.18%, respectively. Decreased CI after enzymatic hydrolysis process to 37.28% and 34.16% for bagasse and citronella, respectively, revealed effective conversion of crystalline cellulose to glucose. SEM analysis of the untreated and treated biomass revealed significant hydrolysis of holocellulose and disruption of lignin.

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