Effect of hydrothermal pretreatment severity on the pretreatment characteristics and anaerobic digestion performance of corn stover

Song, Xiaocong; Wachemo, Akiber Chufo; Zhang, Liang; Bai, Tianqing; Li, Xiujin; Zuo, Xiaoyu; Yuan, Hairong

doi:10.1016/j.biortech.2019.121646

Cited by 47 publications

(23 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors also reported a decrease in the concentration of acid sugars due to the application of high-temperature treatments [11,29]. As it was described for the phenolic compounds, the increase in the concentration of total sugars is explained by the degradation of the lignocellulosic fibers of the RSE during the hydrothermal treatments, especially at 220 • C [27,30].…”

Section: Effect Of Hydrothermal Treatments On the Substrate Charactermentioning

confidence: 62%

High-Value-Added Compound Recovery with High-Temperature Hydrothermal Treatment and Steam Explosion, and Subsequent Biomethanization of Residual Strawberry Extrudate

Cubero-Cardoso

Trujillo-Reyes

Serrano

et al. 2020

Foods

View full text Add to dashboard Cite

This study was on the comparison of hydrothermal treatments at 170 °C (steam injection) and 220 °C (steam explosion) to solubilize the organic matter contained in residual strawberry extrudate, focusing on phenolic compounds that were susceptible to be extracted and on sugars. After the extraction step, the remaining strawberry extrudate phases were subjected to anaerobic digestion to generate biogas that would compensate the energy requirements of the suggested hydrothermal treatments and to stabilize the remaining waste. Hydrothermal treatment at 220 °C allowed the recovery of 2053 mg of gallic acid eq. per kg of residual strawberry extrudate. By contrast, after hydrothermal treatment at 170 °C, only 394 mg of gallic acid eq. per kg of residual strawberry extrudate was recovered. Anaerobic digestion processes were applied to the de-phenolized liquid phase and the solid phase together, which generated similar methane productions, i.e., around 430 mL CH4/g volatile solids, after both 170 °C and 220 °C hydrothermal treatments. Considering the latest observation, hydrothermal treatment at 220 °C is a preferable option for the valorization of residual strawberry extrudate (RSE) due to the high solubilization of valuable phenolic compounds that can be recovered.

show abstract

Section: Effect Of Hydrothermal Treatments On the Substrate Charactermentioning

confidence: 62%

High-Value-Added Compound Recovery with High-Temperature Hydrothermal Treatment and Steam Explosion, and Subsequent Biomethanization of Residual Strawberry Extrudate

Cubero-Cardoso

Trujillo-Reyes

Serrano

et al. 2020

Foods

View full text Add to dashboard Cite

show abstract

“…The maximum concentration of water-soluble sugars was achieved in the LP after the hydrothermal treatment at 120 • C, where it obtained a value around 15 times higher than that of the untreated RE, i.e., 21,571 ± 93 mg/kg RE and 1378 ± 10 mg/kg RE, respectively (Figure 1). The increase in the concentration with respect to the untreated RE may be due to the solubilization of sugars from lignocellulosic matter during the hydrothermal treatments [25,39,40]. However, for temperatures above 120 • C, it is likely that sugars were degraded into other compounds such as hydroxymethylfurfural (HMF), which could explain the decrease in the concentration with respect to the maximum achieved at 120 • C [21,26].…”

Section: Characterization Of the Untreated Raspberry Extrudate And Thmentioning

confidence: 99%

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

et al. 2020

View full text Add to dashboard Cite

Raspberry extrudate residue has bioactive compounds in its matrix that are considered high-added value compounds. In the present study, different hydrothermal treatments were carried out using different operational systems, temperatures and times to solubilize raspberry extrudate in order to obtain these bioactive compounds (i.e., sugars and phenolic compounds). Hydrothermal treatment conditions were assessed in the range of 60 °C to 210 °C, with increments of 30 °C. The hydrothermal treatment at 210 °C for 5 min with direct steam and decompression was the most efficient process based on the solubilization of sugars and phenols, as well as on the antioxidant capacity of the products recovered in the liquid phase after treatment. Under these conditions, the concentration of soluble phenols was more than double the concentration in the raw raspberry extrudate, with more than 5000 mg phenols per kilogram of raspberry extrudate. The obtained values demonstrate the potential of applying this treatment for recovering valuable bioactive compounds from raspberry extrudate.

show abstract

“…Anaerobic digestion (AD) of biomasse residues is considered the best sustainable option to generate sufficient green energy to meet world demand and ensure an adequate future supply of clean energy and fuel [1][2]. Agricultural biomass is abundantly found in nature, such as wheat straw (WS).…”

Section: Introductionmentioning

confidence: 99%

“…The impact of different pretreatment methods on biomass degradability is extremely different and mostly depends on the feedstock characteristics [6][7]. Several biomass pretreatments have been studied such as grinding [8], ultrasound [9][10], chemical processes [3-11-12], biological technique [13][14] and thermal methods [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Process of Methane Production From Wheat Straw and Bovine Manure Co-Digestion by Ultrasound Disintegration and Physicochemical Treatments

Ouahabi¹,

Bensadok²,

Ouahabi³

2021

Preprint

View full text Add to dashboard Cite

Biomass is an attractive energy source that can be used for production of heat, power, and transport fuels, and when produced and used on a sustainable basis, can make a large contribution to reducing greenhouse gas (GHG) emissions. Anaerobic digestion (AD) is a suitable technology for reducing organic matter and generating bioenergy in the form of biogas. This study investigates the factors allowing the optimization of the process of biogas production from the co-digestion of wheat straw (WS) and bovine manure. The statistical analysis of the experiments carried out show that ultrasonic processing plays a fundamental role by sonication density and solids concentration leading to improved characteristics of WS by reducing particle size and increasing concentration of soluble chemical oxygen demand. The higher the sonicating power used, the more the waste particles are disrupted. The optimality obtained under mesophilic conditions for WS pretreated with 4% w/w (weight by weight) H2O2 at temperature 36 °C under 10 minutes of ultrasonication at 25 kHz improves the methane yield by 64%.

show abstract

Effect of hydrothermal pretreatment severity on the pretreatment characteristics and anaerobic digestion performance of corn stover

Cited by 47 publications

References 48 publications

High-Value-Added Compound Recovery with High-Temperature Hydrothermal Treatment and Steam Explosion, and Subsequent Biomethanization of Residual Strawberry Extrudate

High-Value-Added Compound Recovery with High-Temperature Hydrothermal Treatment and Steam Explosion, and Subsequent Biomethanization of Residual Strawberry Extrudate

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

Optimization of the Process of Methane Production From Wheat Straw and Bovine Manure Co-Digestion by Ultrasound Disintegration and Physicochemical Treatments

Contact Info

Product

Resources

About