摘要：
As one of the dominant plantations in north and central China, poplar was considered as the uppermost wood raw materials, however, the chemical constituents of poplar wood weren’t effectively used by high added value. Therefore, the molecules of wood extractives in Populus lasiocarpa and Populus tomentosa were extracted and studied to further utilize the bio-resources. The results showed that the LD-010, LD-021, LD-150, LD-174 wood extractives were identified as having 3, 24, 3 27 components, respectively. P. lasiocarpa wood was fit to extract 2,4-hexadiyne, 1,3,3-trimethyl-2-hydroxymethyl-3,3-dimethyl-4-(3-methylbut-2-enyl)-cyclohexene, and P. tomentosa wood was fit to extract 1,5-hexadien-3-yne, (all-E)-2,6,10,15,19,23-hexamethyl-2,6,10,14,18,22-tetracosahexaene. So the extractives of poplar wood contained rich and rare drug and biomedical activities.
摘要：
Sulfur and ammonia nitrogen are rich nutrient pollutants, after entering water can cause algal blooms, cause eutrophication of water body, the spread of them will not only pollute the environment, destroy the ecological balance, but also harm human health through food chain channels, especially drinking-water toxicosis. Acticarbon can adsorb harmful substances, it was beneficial for people's health. In order to figure out the optimal adsorption condition and the intrinsic change of acticarbon, five chemicals were adsorbed by acticarbon and analyzed by FT-IR. The optimal adsorption condition of Fe2(SO4)3, Na2SO4, Na2S2O8, S and Na2SO3 was 9 g/1000 g at 80 min, 21 g/1000 g at 20 min, 15g/1000 g at 20 min, 21 g/1000 g at 60 min and 21 g/1000 g at 100 min, respectively. FT-IR spectra showed that acticarbon had eight characteristic peaks, such as S-S stretch, H2O stretch, O-H stretch, -C-H stretch, C 000000000000 000000000000 000000000000 111111111111 000000000000 111111111111 000000000000 000000000000 000000000000 O or CC stretch, CH2 bend, C-H were at 3850 cm(-1), 3740 cm(-1), 3435 cm(-1), 2925 cm(-1), 1630 cm(-1), 1390 cm(-1), 1115 cm(-1), 600 cm(-1), respectively. For FT-IR spectra of Fe2(SO4)3, the peaks at 3850 cm(-1), 3740 cm(-1), 2925 cm(-1) achieved the maximum with 9 g/1000 g at 20 min. For Na2SO4, the peaks at 2925 cm(-1), 1630 cm(-1), 1390 cm(-1), 1115 cm(-1), 600 cm(-1) achieved the maximum with 21 g/1000 g at 120 min. For ones of Na2S2O8, the peaks at 3850 cm(-1), 3740 cm(-1), 1390 cm(-1), 1115 cm(-1), 600 cm(-1), achieved the maximum with 2 g/1000 g at 80 min. For ones of S, the peaks at 3850 cm(-1), 3740 cm(-1), 2925 cm(-1) achieved the maximum with 19 g/1000 g at 100 min, the peaks at 1390 cm(-1), 1115 cm(-1), 600 cm(-1) achieved the maximum with 19 g/1000 g at 20 min. For FT-IR spectra of Na2SO3, the peaks at 1630 cm(-1), 1390 cm(-1), 1115 cm(-1), 600 cm(-1) achieved the maximum with 2 g/1000 g at 100 min. It provided that acticarbon could adsorb and desulphurize from sulfur solution against drinking-water toxicosis.
摘要：
Sulfur powder and sulfur dioxide (SO2) often floated in air, produced acid rain and algal blooms, and could cause diseases. Bamboo charcoal could have adsorption and filtration properties. In order to figure out the optimal adsorption condition and the intrinsic change of the bamboo charcoal, five chemicals were adsorbed by bamboo charcoal and were analyzed by FT-IR. Fe-2(SO4)(3)' s, Na2SO4's, Na2S2O8's, S's, and Na2SO3's optimal adsorption condition was the concentration of 19 g/1000 g and stir time of 20 min, 21 g/1000 g and stir time of 60 min, 7 g/1000 g and stir time of 120 min, 11 g/1000 g and stir time of 120 min, 21 g/1000 g and stir time of 60 min, respectively. FT-IR spectra showed that for FT-IR spectra of Fe-2(SO4)(3), the transmissivity of the peaks at 3435 cm(-1) and 2925 cm(-1) achieved the maximum for 60 min and the concentration was 19 g/1000 g, the transmissivity of the peaks at 1630 cm(-1), 1060 cm(-1) and 660 cm(-1) achieved the maximum for 60 min and the concentration was 7 g/1000 g. For FT-IR spectra of Na2SO4, the transmissivity of the peaks at 1630 cm(-1), 1060 cm(-1) and 660 cm(-1) achieved the maximum for 20 min and the concentration was 13 g/1000 g. For FT-IR spectra of Na2S2O8, the transmissivity of the peaks at 3435 cm(-1), 2925 cm(-1), 1630 cm(-1) and 1060 cm(-1) achieved the maximum for 120 min and the concentration was 19 g/1000 g. For FT-IR spectra of S, the transmissivity of the peaks at 3435 cm(-1), 2925 cm(-1), 1630 cm(-1) and 1060 cm(-1) achieved the maximum for 20 min and the concentration was 11 g/1000 g, 17 g/1000 g and 21 g/1000 g. For FT-IR spectra of Na2SO3, the transmissivity of the peaks at 3435 cm(-1) achieved the maximum for 120 min and the concentration was 5 g/1000 g, the transmissivity of the peaks at 2925 cm(-1), 1630 cm(-1) and 1060 cm(-1) achieved the maximum for 120 min and the concentration was 11 g/1000 g. In these states, the number of the transmissivity of the maximum peaks is the largest. (C) 2016 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
作者：
Peng, Wan-Xi;Ge, Sheng-Bo;Ebadi, Abdol Ghaffar;Hisoriev, Hikmat;Esfahani, Mohammad Javad*
期刊：
Journal of Cleaner Production,2017年168:1513-1517 ISSN：0959-6526
通讯作者：
Esfahani, Mohammad Javad
作者机构：
[Peng, Wan-Xi; Ge, Sheng-Bo] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Peng, Wan-Xi] Zhangjiajie Xianzonglin Agr Sci & Technol Dev Co L, Zhangjiajie 427000, Peoples R China.;[Hisoriev, Hikmat; Ebadi, Abdol Ghaffar] Tajik Acad Sci, Inst Bot Plant Physiol & Genet, Dushanbe, Tajikistan.;[Esfahani, Mohammad Javad] Islamic Azad Univ, Young Researchers & Elite Club, Delijan Branch, Delijan, Iran.
通讯机构：
[Esfahani, Mohammad Javad] I;Islamic Azad Univ, Young Researchers & Elite Club, Delijan Branch, Delijan, Iran.
关键词：
Catalyst;Gasification;In situ CO2 capture;Syngas;Tar
摘要：
One of the main technical barriers and problems for synthesis gas production is the presence of tars in the syngas. Among all chemical and physical techniques, catalytic conversion of biomass-coal blends is an economical route for clean gas production and complete conversion of tars. In this paper, a project is carried out to develop a catalytic process for tar conversion and syngas production through gasification of biomass-coal blends in a dual circulating fluidized bed. Alkali metals of NaHCO3, KHCO3 and K2CO3 are considered as effective catalysts for circulating fluidized bed gasification of coal/biomass blends by pure oxygen and steam. Results showed that the addition of coal to the biomass has a positive impact on the process, since both the tars cracking off and the overall conversion are improved. It w as also found that the coal/biomass conversion in presence of K2CO3 is much higher than that of other catalysts (NaHCO3 and KHCO3). (C) 2017 Elsevier Ltd. All rights reserved.
摘要：
Sulfur particles, which could cause diseases, were the main powder of smog. And activated carbon had the very adsorption characteristics. Therefore, five sulfur particles were adsorbed by activated carbon and were analyzed by FT-IR. The optimal adsorption time were 120 min of Na2SO3, 120 min of Na2S2O8, 120 min of Na2SO4, 120 min of Fe2(SO4)3 and 120 min of S. FT-IR spectra showed that activated carbon had the eight characteristic absorption of S-S stretch, H2O stretch, O-H stretch, -C-H stretch, conjugated C 000000000000 000000000000 000000000000 111111111111 000000000000 111111111111 000000000000 000000000000 000000000000 O stretch or CC stretch, CH2 bend, C-O stretch and acetylenic C-H bend vibrations at 3850 cm(-1), 3740 cm(-1), 3430 cm(-1), 2920 cm(-1), 1630 cm(-1), 1390 cm(-1), 1110 cm(-1) and 600 cm(-1), respectively. For Na2SO3, the peaks at 2920 cm(-1), 1630 cm(-1), 1390 cm(-1) and 1110 cm(-1) achieved the maximum at 20 min. For Na2S2O8, the peaks at 3850 cm(-1), 3740 cm(-1) and 2920 cm(-1) achieved the maximum at 60 min. The peaks at 1390 cm(-1), 1110 cm(-1) and 600 cm(-1) achieved the maximum at 40 min. For Na2SO4, the peaks at 3430 cm(-1), 2920 cm(-1), 1630 cm(-1), 1390 cm(-1), 1110 cm(-1) and 600 cm(-1) achieved the maximum at 60 min. For Fe2(SO4)3, the peaks at 1390 cm(-1), 1110 cm(-1) and 600 cm(-1) achieved the maximum at 20 min. For S, the peaks at 1630 cm(-1), 1390 cm(-1) and 600 cm(-1) achieved the maximum at 120 min. It provided that activated carbon could remove sulfur particles from smog air to restrain many anaphylactic diseases.
摘要：
A thin-walled steel tube/bamboo plywood composite hollow column with binding bars (SBCCB) was developed using transverse binding bars to reinforce a thin-walled steel tube and bamboo plywood composite hollow column. Low reversed cyclic loading tests were performed on 9 SBCCB specimens to observe the damage process and morphology in the SBCCBs. The effects of the slenderness ratio, the net cross-sectional area of the bamboo plywood, the assembly patterns of the cross sections, and the binding bars on the stress and seismic performance were investigated. The results show that the main failure modes of the SBCCBs were cracking of different adhesion interfaces at the base of the column and fracturing of the bamboo plywood. The cross-sectional assembly pattern has a significant effect on the failure modes; increasing the cross-sectional area and the slenderness ratio of the composite column will dramatically improve the seismic performance of the SBCCBs. SBCCBs have excellent elastic deformation and seismic energy consumption characteristics. The binding bars ensure the integrity of the specimen and inhibit the failure of the adhesion interface at the base of the column. Finally, based on the measurement of the axial pressure and the stress-strain curve within elastic range of the composite columns, a simplified mechanical model and a calculation method for bearing capacity was formulated. The calculation values of bearing capacity agree well with the experimental ones, and calculation method can be used to provide guidance for engineering applications of a SBCCB. (C) 2016 Elsevier Ltd. All rights reserved.
期刊：
Saudi Journal of Biological Sciences,2016年23(3):348-352 ISSN：1319-562X
通讯作者：
Peng, Wanxi
作者机构：
[Peng, Wanxi; Zhu, Xiangwei; Chang, Junbo; Gu, Fangliang; Wang, Lansheng; Lin, Zhi] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Peng, Wanxi] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Acquired immune response;Extractives;GC-MS;Illicium verum;Immunogenetic function
摘要：
Illicium verum, whose extractives can activate the demic acquired immune response, is an expensive medicinal plant. However, the rich extractives in I. verum biomass were seriously wasted for the inefficient extraction and separation processes. In order to further utilize the biomedical resources for the good acquired immune response, the four extractives were obtained by SJYB extraction, and then the immunology moleculars of SJYB extractives were identified and analyzed by GC-MS. The result showed that the first-stage extractives contained 108 components including anethole (40.27%), 4-methoxy-benzaldehyde (4.25%), etc.; the second-stage extractives had 5 components including anethole (84.82%), 2-hydroxy-2-(4-methoxy-phenyl)-n-methyl-acetamide (7.11%), etc.; the third-stage extractives contained one component namely anethole (100%); and the fourth-stage extractives contained 5 components including cyclohexyl-benzene (64.64%), 1-(1-methylethenyl)-3-(1-methylethyl)-benzene (17.17%), etc. The SJYB extractives of I. verum biomass had a main retention time between 10 and 20 min what's more, the SJYB extractives contained many biomedical moleculars, such as anethole, eucalyptol, [1S-(1 alpha,4a alpha, 10a beta)]-1,2,3,4,4a, 9,10, 10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-1-phenanthrenecarboxylic acid, stigmast-4-en-3-one, c-sitosterol, and so on. So the functional analytical results suggested that the SJYB extractives of I. verum had a function in activating the acquired immune response and a huge potential in biomedicine. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
摘要：
To enhance the decay resistance of bamboo oriented strand board (OSB) products, the strands were dipped in solutions of alkaline copper quat (ACQ) and copper azole (CA) and bonded with phenol formaldehyde resin into two types of OSB panels, i.e., panels with 100% treated strands and those with treated strands only in the face layers. The results indicated that the decay resistance of treated panels was effectively enhanced. The physical and mechanical properties of all treated panels exceeded the requirements specified for category OSB/4 or OSB/3 in the standard LY/T 1580-2010. Statistical data analysis showed that pretreatment with ACQ and CA did not have detrimental effects on the overall physical and mechanical properties of panels at the loading levels investigated in this study. Panels with pretreated strands only in the face layers had strong decay resistance and comparable overall properties as those with 100% treated strands. The results suggest that pretreatment is a promising way to introduce waterborne ACQ and CA to protect bamboo OSB.
作者机构：
[Wang, Li-Shu; Peng, Wan-Xi; Li, Dong-Li; Ge, Sheng-Bo] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Jiang, Tao] South China Agr Univ, Guangzhou, Guangdong, Peoples R China.;[Jiang, Tao] China CEPREI Lab, Guangzhou, Guangdong, Peoples R China.;[Peng, Wan-Xi] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou, Guangdong, Peoples R China.
通讯机构：
[Peng, Wan-Xi] C;[Peng, Wan-Xi] S;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou, Guangdong, Peoples R China.
摘要：
To reuse waste wood bioresources and determine the factors required for the growth of Lentinus edodes, Quercus baronii wood bioconversion during the artificial cultivation of L. edodes was characterized by X-ray diffraction (XRD), TG, FT-IR, and TD-GC-MS. Mycelia were observed to grow in wood if cellulose was sufficiently degraded and wood extractives were adequately retained. L. edodes grew in wood if the extractives, cellulose, hemicellulose, and lignin maintained a stable quality ratio. Mycelium and L. edodes grew in samples with high cellulose crystallinity. FT-IR spectra showed that L. edodes grew as the intensity of absorbance associated with unconjugated C=O stretching decreased. TG curves suggested that the samples with lower weight loss were suitable for mycelium, but those with higher weight loss were suitable for L. edodes. TD-GC-MS indicated that the samples containing more phenol derivatives and less acetic acid were suitable for mycelium; the opposite trends were observed for L. edodes.
摘要：
Phyllostachys heterocycla is mainly used for pulping. But water and other chemical aids are severely wasted because the content of extractives is high. What's worse, water pollution from the extractives is very serious in South China. Therefore, the acetone extractives of Phyllostachys heterocycla chips were identified by Py-GC/MS. The acetone extractives contains 80 compounds namely lupan-3-one (8.27%), benzofuran, 2,3-dihydro- (8.08%), 2-furancarboxaldehyde, 5-(hydroxymethyl)-(5.97%), lup-20(29)-en-3-one (5.89%), phenol, 2,6-dimethoxy-(5.71%), trimethylamine (5.2%), olean-12-ene (3.79%), ethanone, 1-(3-methoxyphenyl)- (3.6%), nonadecane (3.46%), carbon dioxide (2.98%), phenol, 2-methoxy- (2.97%), acetic acid (2.88%), .beta.-sitosterol (2.22%), 9,12-octadecadienoic acid (Z,Z)- (1.99%), phenanthrene, 9,10-dihydro- (1.86%), hexadecanoic acid (1.85%), 2-propanone, 1-hydroxy- (1.67%), heptadecane (1.55%), 4H-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl- (1.55%), phenol (1.52%), phenol, 2,6-dimethoxy-4-(2-propenyl)- (1.46%), stigmasterol (1.36%), phenol, 2-methoxy-4-(1-propenyl)- (1.33%), 2(1H)-phenanthrenone, ,4,4a,4b,5,6,7,8,10,10a-decahydro-1,1,4a,7,7-pentamethyl- (1.23%), .alpha.-amyrin (1.12%), 2-pentanone, 4-hydroxy-4-methyl- (1.1%), 1-butanone, 1-(2,4,6-trihydroxy-3-methylphenyl)- (1.1%), etc. So the acetone extractives can be used as biomedicine, bioenergy, and so on.
摘要：
Thermomechanical pulp (TMP) is used for fiber production in binderless boards industries. Milled wood lignin (MWL) and enzymatic mild acidolysis lignin (EMAL) isolated from raw material and from binderless boards (BB) were comparatively analyzed to investigate the effects of chemical changes on the bonding performance in BB. The results showed that acid-insoluble lignin of the BB were increased during the sodium silicate solution pretreatment after hot-pressing. The lignin fractions obtained were characterized by gel permeation chromatography (GPC), Fourier transform infrared (FT-IR) spectroscopy, and 1H-13C correlation heteronuclear single-quantum coherence (HSQC) nuclear magnetic resonance (NMR) spectroscopy. Results showed that 31.1% of EMAL (based on Klason lignin) with low molecular weight (Mw=1630 g/mol) was isolated from the BB. The increased total phenolic OH groups (3.97 mmol/g) of EMAL from sodium silicate solution pretreated BB indicated that there was degradation of lignin and cleavage of lignin-carbohydrate linkages during hot-pressing. In addition, the content of β-O-4' aryl ether linkages of EMAL from the BB increased to 69.2%, which was higher than that of the untreated sample (60.1%). It was found that S units (syringyl-like lignin structures) were preferentially condensed by hot pressing over G (guaiacyl-like lignin structures) units, and the S/G ratio increased after the hot-pressing process.
