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1. A novel on-site wheat straw pretreatment method: Enclosed torrefaction

Author:
Cheng, Xingxing; Huang, Zhi; Wang, Zhiqiang; Ma, Chunyuan; Chen, Shouyan
Source:
Bioresource technology 2019 v.281 pp. 48-55
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; acids; carbon; esters; temperature; torrefaction; wheat straw;     Show all 7 Subjects
Abstract:
... In this study, a novel on-site torrefaction method was proposed for the pretreatment of wheat straw, in which the wheat straw was placed in an enclosed environment for torrefaction. The effects of different torrefaction conditions on the properties of both solid and gaseous products were investigated. When the temperature of enclosed torrefaction increased from 200 °C to 250 °C, the higher heating ...
DOI:
10.1016/j.biortech.2019.02.075

2. Bifunctional and recyclable Dawson-type polyoxometalates catalyze oxidative degradation of lignocellulose to selectively produce phthalates

Author:
Shi, Nan; Liu, Dong; Dang, Falu; Chen, Qingtai; Li, Min; Wen, Fushan
Source:
Bioresource technology 2019 v.273 pp. 677-681
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; catalysts; depolymerization; ingredients; ketones; lignin; lignocellulose; oxidation; phenols; phthalates;     Show all 10 Subjects
Abstract:
... Acid-redox bifunctional Dawson-type polyoxometalates K6P2W18O62 (P2W18) and K10P2W17O61 (P2W17) were introduced as the new-type catalysts in oxidative decomposition of lignocellulose. The lignin and hemicellulose ingredients of lignocellulose could be decomposed by P2W17 to produce diisobutyl phthalate with the selectivity of 75.67% and other aromatic and aliphatic compounds under mild conditions, ...
DOI:
10.1016/j.biortech.2018.11.047

3. Investigation of the degradation of bio-recalcitrance in Apocynum venetum fiber biodegumming

Author:
Gong, Jixian; Zhang, Qiuya; Lou, Jiangfei; Zhang, Tao; Li, Huiqin; Li, Zheng; Li, Qiujin; Zhang, Jianfei
Source:
Journal of natural fibers 2019 v.16 no.1 pp. 1-12
ISSN:
1544-046X
Subject:
hemicellulose,   etc   ; Apocynum; biomass; bioprocessing; degumming; fiber quality; lignin; pollution;     Show all 8 Subjects
Abstract:
... Traditional degumming of bast fibers results in problems such as environmental pollution and inferior fiber quality. For these reasons, biodegumming was considered as a potential process for bast fibers. In biodegumming process, decomposition of noncellulosic components was the pivotal problem. In this manuscript, the bast fiber of Apocynum venetum was processed with combinatorial processing, cont ...
DOI:
10.1080/15440478.2017.1379043

4. Development of bark-based adhesives for plywood: utilization of flavonoid compounds from bark and wood. II

Author:
Matsumae, Tomoyuki; Horito, Masayoshi; Kurushima, Naoko; Yazaki, Yoshikazu
Source:
Journal of wood science 2019 v.65 no.1 pp. 9
ISSN:
1435-0211
Subject:
hemicellulose,   etc   ; Pinus radiata; adhesives; bark; cellulose nanofibers; flavonoids; lignin; plywood; resins; tannins; wood; wood bonding;     Show all 12 Subjects
Abstract:
... Although many conventional adhesives for plywood are formulated with tannins (polyflavanoid compounds) extracted from bark or wood, adhesives using tannin directly without extraction from the bark have also been made. In 2003, the first bark particle (< 63 μm) adhesive was developed from radiata pine bark. In this present study, the quality of the bark adhesive has been improved by fibrillating th ...
DOI:
10.1186/s10086-019-1780-x

5. Comparison of Fenton and bismuth ferrite Fenton-like pretreatments of sugarcane bagasse to enhance enzymatic saccharification

Author:
Zhang, Yuting; Liang, Ju; Zhou, Wenbing; Xiao, Naidong
Source:
Bioresource technology 2019 v.285 pp. 121343
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; bismuth; delignification; ferrimagnetic materials; hydroxyl radicals; reducing sugars; saccharification; sugarcane bagasse;     Show all 8 Subjects
Abstract:
... This study compared enzymatic saccharification of sugarcane bagasse (SCB) after application of two different pretreatment methods, Fenton pretreatment (FP) and BiFeO3 Fenton-like pretreatment (BFP). The composition, morphology and structural properties of SCB with different pretreatments were analyzed. Results showed that, after BFP, the yield of reducing sugar of SCB under enzymatic saccharificat ...
DOI:
10.1016/j.biortech.2019.121343

6. The mechanism of wet/dry torrefaction pretreatment on the pyrolysis performance of tobacco stalk

Author:
Sun, Yan; He, Zhen; Tu, Ren; Wu, Yu-jian; Jiang, En-chen; Xu, Xi-wei
Source:
Bioresource technology 2019 v.286 pp. 121390
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; acids; additives; carbon monoxide; ketones; phenols; plant residues; pyrolysis; tobacco; torrefaction;     Show all 10 Subjects
Abstract:
... In this work, the influence of dry/wet torrefaction with additives on the pyrolysis performance was investigated. The results showed that the content of phenols and ketones (62% and 42%) was improved and the content of acids decreased from 35% to 4% due to the increase of lignin content in torrefied char. Moreover, the content of aromatic hydrocarbon reached 22%. The mechanism showed that the conv ...
DOI:
10.1016/j.biortech.2019.121390

7. Torrefaction performance of camellia shell under pyrolysis gas atmosphere

Author:
Xu, Xiwei; Li, Zonglin; Jiang, Enchen
Source:
Bioresource technology 2019 v.284 pp. 178-187
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; biomass; carbon dioxide; cellulose; chemical structure; combustion; heat; hydrogen; methane; physical properties; pyrolysis; torrefaction;     Show all 12 Subjects
Abstract:
... In order to complete using the pyrolysis gas and heat from biomass routine pyrolysis, the camellia shell was torrefied under PG atmosphere. And the chemical and physical properties of torrefied char obtained under N2 and pyrolysis gas were compared as well as the pyrolysis and combustion performance. Moreover, in order to investigate the mechanism of pyrolysis gas torrefaction, the influence of ea ...
DOI:
10.1016/j.biortech.2019.03.091

8. Recent advances in engineering Corynebacterium glutamicum for utilization of hemicellulosic biomass

Author:
Choi, Jae Woong; Jeon, Eun Jung; Jeong, Ki Jun
Source:
Current opinion in biotechnology 2019 v.57 pp. 17-24
ISSN:
0958-1669
Subject:
hemicellulose,   etc   ; Corynebacterium glutamicum; amino acids; biocatalysts; biomass; bioprocessing; biotransformation; engineering; feedstocks; lignocellulose; pentoses;     Show all 11 Subjects
Abstract:
... Corynebacterium glutamicum has been mainly used for industrial production of amino acids, and in recent years, it has also been successfully engineered to broaden its range of substrate and product profiles. In particular, C. glutamicum has been engineered to use non-natural sugar substrates (mainly pentoses) derived from hemicellulosic feedstock, which is the second abundant component of lignocel ...
DOI:
10.1016/j.copbio.2018.11.004

9. Recent developments in biomass-derived carbon as a potential sustainable material for super-capacitor-based energy storage and environmental applications

Author:
Thomas, Paul; Lai, Chin Wei; Bin Johan, Mohd Rafie
Source:
Journal of analytical and applied pyrolysis 2019 v.140 pp. 54-85
ISSN:
0165-2370
Subject:
hemicellulose,   etc   ; activated carbon; biochar; carbonization; cost effectiveness; electrochemistry; electrodes; feedstocks; lignin; manufacturing; pyrolysis;     Show all 11 Subjects
Abstract:
... The production of activated carbon using biochar exclusively for energy and environmental applications is attracting attention. In this review, an outline of the recent trends towards biomass-derived inclusive specific lignin, hemicellulose and cellulose-derived electrodes is explained in a holistic manner. Distinctive lab-scale approaches for manufacturing biochar, including carbonisation, and th ...
DOI:
10.1016/j.jaap.2019.03.021

10. Thermal pyrolysis characteristics and kinetics of hemicellulose isolated from Camellia Oleifera Shell

Author:
Lei, Zhihui; Wang, Shengdan; Fu, Haocheng; Gao, Wenhua; Wang, Bin; Zeng, Jinsong; Xu, Jun
Source:
Bioresource technology 2019 v.282 pp. 228-235
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; Camellia oleifera; activation energy; alkali treatment; ethanol; lignocellulose; models; pyrolysis; thermogravimetry;     Show all 9 Subjects
Abstract:
... Camellia Oleifera Shell (COS) is a kind of renewable lignocellulose resource and contains abundant hemicelluloses. In this work, the hemicelluloses in COS were extracted by alkali treatment and precipitated by ethanol with different concentration. Thermal pyrolysis kinetics of COS hemicelluloses were investigated using a thermogravimetric analyzer at the heating rates of 5, 10, and 20 °C/min based ...
DOI:
10.1016/j.biortech.2019.02.131

11. Effects of heating rate and gas atmosphere on the pyrolysis and combustion characteristics of different crop residues and the kinetics analysis

Author:
Liu, Jiazheng; Zhong, Fei; Niu, Wenjuan; Su, Jing; Gao, Ziqi; Zhang, Kai
Source:
Energy 2019 v.175 pp. 320-332
ISSN:
0360-5442
Subject:
hemicellulose,   etc   ; activation energy; air; cellulose; combustion; lignin; lignocellulose; oxygen; pyrolysis; rice straw; temperature; thermogravimetry;     Show all 12 Subjects
Abstract:
... Efficient utilization of crop residues can help to solve the problem of global resource scarcity. The pyrolysis and combustion characteristics of 40 crop residues and 3 lignocellulosic components in different atmospheres by thermogravimetric analysis were analyzed. The results showed that with the increase of heating rate, the pyrolysis and combustion of cellulose, hemicelluloses, lignin and crop ...
DOI:
10.1016/j.energy.2019.03.044

12. Effect of steam treatment on the chemical composition of hemp (Cannabis sativa L.) and identification of the extracted carbohydrates and other compounds

Author:
Väisänen, Taneli; Kilpeläinen, Petri; Kitunen, Veikko; Lappalainen, Reijo; Tomppo, Laura
Source:
Industrial crops and products 2019 v.131 pp. 224-233
ISSN:
0926-6690
Subject:
hemicellulose,   etc   ; Cannabis sativa; cellulose; chemical composition; chemical industry; hemp; iron; leaves; medicine; steam; temperature;     Show all 11 Subjects
Abstract:
... The overarching aim of this study was to investigate the possibility of extracting carbohydrates and other compounds from hemp (Cannabis sativa L.) using a continuous steam treatment that would also separate the fibres from the hurd. Different parts of hemp, such as stalk, leaves, and decorticated hemp with hurd, were extracted by a steam treatment. After processing, the fibers in the stalk could ...
DOI:
10.1016/j.indcrop.2019.01.055

13. Hydrochar derived from green waste by microwave hydrothermal carbonization

Author:
Shao, Yuchao; Long, Yuyang; Wang, Hengyi; Liu, Dongyun; Shen, Dongsheng; Chen, Ting
Source:
Renewable energy 2019 v.135 pp. 1327-1334
ISSN:
0960-1481
Subject:
hemicellulose,   etc   ; adsorbents; biofuels; cellulose; economic evaluation; green waste; hydrochars; hydrothermal carbonization; storage temperature; sustainable technology;     Show all 10 Subjects
Abstract:
... Green waste (GW), rich in cellulose and hemicellulose, is a valuable resource. Developing alternative sustainable technologies to utilize GW is attracting increasing attention. In this study, microwave hydrothermal carbonization (MHTC) process parameters including holding temperature, holding time, and liquid-to-solid ratio were optimized by a response surface design to tailor the properties of hy ...
DOI:
10.1016/j.renene.2018.09.041

14. Liquor re-use strategy in lignocellulosic biomass fractionation with ethanol-water mixtures

Author:
Vergara, Priscilla; García-Ochoa, Félix; Ladero, Miguel; Gutiérrez, Soledad; Villar, Juan C.
Source:
Bioresource technology 2019 v.280 pp. 396-403
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; acetic acid; biomass; cellulose; energy; enzymatic hydrolysis; fractionation; glucose; hydrolysates; lignin; lignocellulose;     Show all 11 Subjects
Abstract:
... Liquor recycle in lignocellulosic biomass fractionation with ethanol-water has been studied. Runs have been carried out in a 6 L tank reactor with liquor recirculation. The liquors obtained in six successive fractioning operations have been analyzed together with the solid phase remnant. Experimental results revealed that the number of re-uses reduces solids recovery (from 52.2 to 42.6%) and cellu ...
DOI:
10.1016/j.biortech.2019.02.057

15. Two-stage thermophilic anaerobic co-digestion of corn stover and cattle manure to enhance biomethane production

Author:
Joseph, Gail; Zhang, Bo; Mahzabin Rahman, Quazi; Wang, Lijun; Shahbazi, Abolghasem
Source:
Journal of environmental science and health 2019 v.54 no.5 pp. 452-460
ISSN:
1532-4117
Subject:
hemicellulose,   etc   ; anaerobic digestion; biodegradability; biogas; cattle manure; cellulose; corn stover; lignin; liquids; methane; temperature;     Show all 11 Subjects
Abstract:
... Two-stage thermophilic anaerobic co-digestion of cattle manure and corn stover was conducted to increase biomethane production. The first stage pre-digestion of corn stover was studied based on the following treatment variables: corn stover to liquid fraction of digestate (CS:LFD) ratio (1:7, 1:10, 1:13, 1:14), digestion temperature (55 °C, 60 °C) and digestion time (3, 7, 14 days). The reduction ...
DOI:
10.1080/10934529.2019.1567156

16. Isolation of lignocelluloses from the spent liquor of thermomechanical pulping process with fly ash and cationic polymer

Author:
Sun, Yonghui; Liu, Zhong; Fatehi, Pedram
Source:
Journal of environmental management 2019 v.235 pp. 414-422
ISSN:
0301-4797
Subject:
hemicellulose,   etc   ; biochemical oxygen demand; chemical oxygen demand; fly ash; lignin; lignocellulose; thermomechanical pulping; turbidity;     Show all 8 Subjects
Abstract:
... In this work, fly ash (FA) and polydiallyldimethylammonium chloride (PDADMAC) were utilized to treat the spent liquor (SL) of thermomechanical pulping (TMP) process in an effort to remove its lignocelluloses. The incorporation of PDADMAC into the system reduced the dosage of FA required for achieving acceptable lignocellulose removals. The maximum lignocellulose removals of 81%, 78%, 56%, 53% and ...
DOI:
10.1016/j.jenvman.2019.01.068

17. Alkaline post-incubation improves cellulose hydrolysis after γ-valerolactone/water pretreatment

Author:
Jia, Lili; Qin, Yujie; Wen, Peiyao; Zhang, Tian; Zhang, Junhua
Source:
Bioresource technology 2019 v.278 pp. 440-443
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; adsorption; catalysts; cellulases; cellulose; corn stover; digestibility; esterification; hydrolysis; lignin; lignocellulose; sodium hydroxide; sulfuric acid;     Show all 13 Subjects
Abstract:
... The impact of γ-valerolactone/water (GVL/H2O) pretreatment coupled with alkaline post-incubation on the digestibility of cellulose substrates was investigated. When Avicel was pretreated by GVL/H2O with H2SO4 as catalyst, the glucan conversion decreased from 27% (untreated Avicel) to 16% due to the esterification of cellulose after pretreatment. After incubation of GVL/H2O pretreated Avicel with 1 ...
DOI:
10.1016/j.biortech.2019.01.141

18. A review on biomass pyrolysis models: Kinetic, network and mechanistic models

Author:
Hameed, Samreen; Sharma, Abhishek; Pareek, Vishnu; Wu, Hongwei; Yu, Yun
Source:
Biomass and bioenergy 2019 v.123 pp. 104-122
ISSN:
0961-9534
Subject:
hemicellulose,   etc   ; biomass; cellulose; fuels; kinetics; lignin; liquids; mechanistic models; pyrolysis; reaction mechanisms;     Show all 10 Subjects
Abstract:
... Pyrolysis converts biomass into liquid, gaseous and solid fuels. This work reviews the existing models for biomass pyrolysis, including kinetic, network and mechanistic models. The kinetic models are based on the global reaction mechanisms and have been extensively used for a wide range of biomass under various operating conditions. Major emphases have been on the network models as these models pr ...
DOI:
10.1016/j.biombioe.2019.02.008

19. Hybrid dilute sulfuric acid and aqueous ammonia pretreatment for improving butanol production from corn stover with reduced wastewater generation

Author:
Xiao, Min; Wang, Lan; Wu, Youduo; Cheng, Chi; Chen, Lijie; Chen, Hongzhang; Xue, Chuang
Source:
Bioresource technology 2019 v.278 pp. 460-463
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; ammonia; butanol; corn stover; feedstocks; lignin; lignocellulose; pretreatment; sugars; sulfuric acid; temperature; washing; wastewater;     Show all 13 Subjects
Abstract:
... An efficient hybrid pretreatment method was developed for butanol production from corn stover using dilute sulfuric acid (DA) and aqueous ammonia (AA). With the optimized AA concentration, treatment temperature and time of 10% AA, 80 °C and 24 h, the hybrid pretreatment could effectively dissolve hemicellulose and lignin with solid recovery rate of 37.45% and lignin reduction rate of 86.77% compar ...
DOI:
10.1016/j.biortech.2019.01.079

20. Ultrafine grinding of poplar biomass: effect of particle morphology on the liquefaction of biomass for methyl glycosides and phenolics

Author:
Zhai, Qiaolong; Li, Fanglin; Wang, Fei; Feng, Junfeng; Jiang, Jianchun; Xu, Junming
Source:
Cellulose 2019 v.26 no.6 pp. 3685-3701
ISSN:
0969-0239
Subject:
hemicellulose,   etc   ; Populus; biomass; cellulose; feedstocks; glycosides; grinding; liquefaction; phenolic compounds; physicochemical properties; temperature; value added; wood;     Show all 13 Subjects
Abstract:
... This paper shows that mechanical ultrafine grinding of poplar wood is an efficient pretreatment approach to enhance its reactivity during liquefaction. The microstructural features and chemical properties of biomass samples with different particle morphology were studied. In particular, we found that more cellulose and hemicellulose were exposed on the outer surface of the ultrafine powder (cellul ...
DOI:
10.1007/s10570-019-02332-0