Wood Science and Technology最新文献

UV light-induced photodegradation of condensed tannins: obtaining bayberry tannins with different mean polymerization degrees 紫外线诱导缩合单宁的光降解：获得不同平均聚合度的杨梅单宁

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-11-07 DOI: 10.1007/s00226-024-01603-9

Ying Zhou, Yan Zhang, Yuting Zhang, Wenjing Hu, Shuguang Han

{"title":"UV light-induced photodegradation of condensed tannins: obtaining bayberry tannins with different mean polymerization degrees","authors":"Ying Zhou, Yan Zhang, Yuting Zhang, Wenjing Hu, Shuguang Han","doi":"10.1007/s00226-024-01603-9","DOIUrl":"10.1007/s00226-024-01603-9","url":null,"abstract":"<div><p>Condensed tannins (CTs) characterized by a low degree of polymerization (DP) are recognized to have substantial value for applications across diverse industrial sectors, including food production, pharmaceuticals, and wood adhesive manufacturing. To acquire CTs with a low DP, the depolymerization of bayberry tannins (BTs) through a novel approach utilizing UV light-driven photocatalytic degradation, facilitated by the ultrasonic dispersion of TiO<sub>2</sub> nanoparticles was investigated. Under the optimal degradation conditions (a tannin concentration of 6%, a TiO<sub>2</sub> nanoparticles loading amount of 0.20%, and a degradation time of 4 h), the study delineated a discernible linear relationship correlating both the degradation time with the formaldehyde reactivity of the photocatalytic degradation products, and the formaldehyde reactivity with the mean degree of polymerization (mDP) of these photocatalytic degradation products. With the establishment of these correlative relationships, it is feasible to systematically control the degradation process of BTs. The photocatalytic degradation process adhered to the following mechanism: The degradation process of BTs is initiated by the cleavage of the C4-C8 bond which, at the incipient stage of degradation, results in the elimination of one gallocatechin gallate unit and one gallocatechin unit, or alternatively, the removal of a gallocatechin dimer. During the advanced stages of degradation, the opening of the C ring gives rise to different derivatives. Upon establishing optimal degradation parameters, it was observed that the primary constituents of the photocatalytic degradation products were dimers. The utilization of photocatalytic degradation exhibited an ability to break down condensed tannins in a manner that is both controllable and in an environmentally friendly way.</p></div>","PeriodicalId":810,"journal":{"name":"Wood Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tangential veneer fabrication of Fenton-like catalyst for the removal of organic dye from wastewater 用于去除废水中有机染料的类芬顿催化剂切向单板制备技术

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-11-07 DOI: 10.1007/s00226-024-01608-4

Jiani Zhou, Gonggang Liu, Xuebing Yi, Yuanyuan Liao, Chongqing Wang, Shanshan Chang, Jinbo Hu

引用次数: 0

Tuning the antioxidant and antibacterial properties of lignin by physicochemical modification during sequential acid precipitation from Kraft black liquor 在从牛皮纸黑液中进行连续酸沉淀的过程中，通过物理化学改性调整木质素的抗氧化和抗菌特性

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-11-07 DOI: 10.1007/s00226-024-01612-8

María E. Eugenio, Luisa García-Fuentevilla, Raquel Martín-Sampedro, José I. Santos, Bernd Wicklein, David ibarra

{"title":"Tuning the antioxidant and antibacterial properties of lignin by physicochemical modification during sequential acid precipitation from Kraft black liquor","authors":"María E. Eugenio, Luisa García-Fuentevilla, Raquel Martín-Sampedro, José I. Santos, Bernd Wicklein, David ibarra","doi":"10.1007/s00226-024-01612-8","DOIUrl":"10.1007/s00226-024-01612-8","url":null,"abstract":"<div><p>Turning lignin from black liquor waste into value-added bioactive agents is one of the possible routes for improving the sustainability and profitability of lignocellulosic industry. However, due to chemical and structural variability of lignin, it is necessary to isolate specific lignin fractions from black liquor with the purpose to achieve samples with unique chemical and structural characteristics and therefore, specific biological activities. In this study, poplar lignin fractions isolated from Kraft black liquor by sequential acid precipitation at pH´s 7.5, 5 and 2.5 (denoted as P-7.5, P-5 and P-2.5) were characterized according to their physicochemical, antioxidant and antibacterial properties. In general, lignin fractions displayed a wide elimination of lateral chains (aryl-β ether and C–C) and, therefore a high phenolic content and low molecular weight, as the pH sequential precipitation was decreased from 7.5 to 2.5. Moreover, thermal analysis revealed that the P-7.5 lignin fraction showed higher thermal stability than P-2.5 and P-5. In terms of antioxidant activity, the P-7.5 lignin fraction, with a higher S/G ratio and a less oxidized structure compared to P-5 and P-2.5, exhibited higher antioxidant activity. In addition, lower antibacterial effect was observed for all lignin fractions against <i>Escherichia coli</i> compared to that obtained against <i>Staphylococcus aureus.</i> Among them, the P-2.5 and P-5 fractions, with higher phenolic content and lower molecular weight values than P-7.5, showed a greater antibacterial effect against <i>S. aureus</i>.</p></div>","PeriodicalId":810,"journal":{"name":"Wood Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00226-024-01612-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel cross-flow Ag/wood composite filter for high-concentration organic dye wastewater treatment 用于高浓度有机染料废水处理的新型横流 Ag/wood 复合过滤器

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-11-06 DOI: 10.1007/s00226-024-01605-7

Gensheng Wu, Tong Su, Pingan Li, Yunfeng Gu, Weiyu Chen, Bo Yu

{"title":"A novel cross-flow Ag/wood composite filter for high-concentration organic dye wastewater treatment","authors":"Gensheng Wu, Tong Su, Pingan Li, Yunfeng Gu, Weiyu Chen, Bo Yu","doi":"10.1007/s00226-024-01605-7","DOIUrl":"10.1007/s00226-024-01605-7","url":null,"abstract":"<div><p>Dye wastewater produced from industry production is difficult to degrade naturally. Natural wood possesses a hierarchical and three-dimensional (3D) interconnected microstructure, making it a desirable material for water treatment. However, limited water transport pathways can reduce the efficiency of removing high-concentration organic dyes. To address this, we present a low-cost, scalable, and efficient cross-flow Ag/wood composite filter by combing the structural design and hydrothermal treatment using a silver-ammonia solution. Silver ions (Ag<sup>+</sup>) are effectively reduced to silver nanoparticles (Ag NPs) by wood lignin and then anchored by hydroxyl groups in the cellulose and hemicellulose of the wood. Importantly, the incorporation of Ag NPs does not compromise the 3D porous structure of the wood. Diagonal grooves and exposed channels on both sides of the filter guide pollutants, ensuring extensive interaction with Ag NPs along elongated reaction pathways and through microstructural vessel disturbances. An 8 mm-thick cross-flow Ag/wood composite filter, featuring grooves with a diameter of 15 mm and a depth of 4 mm, achieves a remarkable 99% degradation efficiency of methylene blue (MB) at a water flux of up to 1775 L/(m<sup>2</sup>∙h). The performance in water flux and decolorization efficiency hinges significantly on groove diameter, groove depth, and filter thickness. This cross-flow Ag/wood composite filter represents a promising advancement for rapid and effective removal of various organic pollutants in a single-step process, showcasing extensive potential for applications in water treatment. This work aims to enhance clarity and readability while maintaining the technical details and impact of the research.</p></div>","PeriodicalId":810,"journal":{"name":"Wood Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impregnation of wood with water using ultrasonic irradiation and water containing bulk nanobubbles 利用超声波辐照和含有大量纳米气泡的水对木材进行水浸渍

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-11-02 DOI: 10.1007/s00226-024-01611-9

Toru Tuziuti, Kyuichi Yasui, Wataru Kanematsu

引用次数: 0

Acetylation of reed (Arundo donax) to prevent the contact dermatitis of woodwind musicians 对芦苇（Arundo donax）进行乙酰化处理，防止木管乐器演奏家患上接触性皮炎

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-11-01 DOI: 10.1007/s00226-024-01604-8

Yoshikazu Arai, Eiichi Obataya, Akiko Nakagawa-Izumi, Naoko Okiyama

引用次数: 0

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: applications for heavy metal sorption and oil/water separation 用于水修复的多功能 MnO2 纳米棒改性木质海绵：在重金属吸附和油/水分离方面的应用

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-10-03 DOI: 10.1007/s00226-024-01602-w

Siavosh Vojdani Saghir, Elaheh K. Goharshadi

{"title":"Multifunctional MnO2 nanorods-modified wood sponge for water remediation: applications for heavy metal sorption and oil/water separation","authors":"Siavosh Vojdani Saghir, Elaheh K. Goharshadi","doi":"10.1007/s00226-024-01602-w","DOIUrl":"10.1007/s00226-024-01602-w","url":null,"abstract":"<div><p>This study presents the development of a wood sponge (WS) modified with MnO<sub>2</sub> nanorods (MnO<sub>2</sub>/WS) derived from balsa natural wood, an abundant and environmentally friendly raw material, for the adsorption of organic solvents, oils, and heavy metal ions from water. The MnO<sub>2</sub>/WS composite exhibits an exceptionally low density of 0.014 g cm<sup>− 3</sup> and a high porosity of approximately 97%. It demonstrates consistent sorption-desorption performance over 20 cycles. Zeta potential analysis reveals that MnO<sub>2</sub> nanorods carry a negative charge (-22.31 mV) at pH 4.68, indicating their affinity for adsorbing positively charged heavy metal ions, which are commonly found in industrial effluents. Moreover, WS shows remarkable mechanical robustness, enduring 1000 stress-strain cycles with high shape recovery, ensuring its durability under operational conditions. The data highlight several strengths of MnO<sub>2</sub>/WS, including cost-effective production process, high reusability, remarkable sorption capacities for carbon tetrachloride and soybean oil (29.56 and 17.65 times its mass, respectively), and efficient performance. Its capability to produce potable water from real industrial effluents positions MnO<sub>2</sub>/WS as an ideal solution for addressing water crises.</p></div>","PeriodicalId":810,"journal":{"name":"Wood Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of high-intensity microwave (HIMW) treatment on mechanical properties and bending failure mechanisms of radiata pine (Pinus radiata D. Don) 高强度微波（HIMW）处理对辐射松（Pinus radiata D. Don）机械性能和弯曲破坏机理的影响

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-09-27 DOI: 10.1007/s00226-024-01601-x

Xuefeng Xing, Shanming Li, Juwan Jin, Zhenyu Wang, Feng Fu

{"title":"Effects of high-intensity microwave (HIMW) treatment on mechanical properties and bending failure mechanisms of radiata pine (Pinus radiata D. Don)","authors":"Xuefeng Xing, Shanming Li, Juwan Jin, Zhenyu Wang, Feng Fu","doi":"10.1007/s00226-024-01601-x","DOIUrl":"10.1007/s00226-024-01601-x","url":null,"abstract":"<div><p>This study investigated the effects of high-intensity microwave (HIMW) treatment on the mechanical properties of radiata pine wood. The treatment, conducted on sapwood and heartwood with 60% initial moisture content, involved varied microwave energy densities: 60, 80, and 100 kWh/m<sup>3</sup>. Tests evaluated tensile and compressive properties in three directions, alongside shear strength and bending properties. Acoustic emission (AE) and digital image correlation (DIC) techniques probed damage evolution under bending loads before and after HIMW treatment. As microwave energy density increased, compressive, tensile, and shear strength decreased, with heartwood being the most susceptible. Substantial reductions occurred in longitudinal compressive properties and tensile properties perpendicular to the grain. After HIMW treatment (80 kWh/m<sup>3</sup> and 100 kWh/m<sup>3</sup> for sapwood and heartwood, respectively), although there was a slight decrease in the modulus of elasticity and bending strength, there was a significant increase in bending plasticity. HIMW-treated specimens exhibited more high-frequency AE signals during elastic–plastic deformation, indicating more frequent fractures in the treated wood during three-point bending. Changes in the microscopic structure of the wood specimens caused by HIMW treatment increased the damage growth rate and stress redistribution efficiency during loading, augmenting the bending plasticity of wood.</p></div>","PeriodicalId":810,"journal":{"name":"Wood Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic insight into hydroxy-methylation of hardwood Kraft lignin 硬木牛皮纸木质素羟基甲基化的机理研究

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-09-24 DOI: 10.1007/s00226-024-01596-5

Micaela B. Peralta, Nicolò Pajer, Claudia Crestini, Verónica V. Nicolau

{"title":"Mechanistic insight into hydroxy-methylation of hardwood Kraft lignin","authors":"Micaela B. Peralta, Nicolò Pajer, Claudia Crestini, Verónica V. Nicolau","doi":"10.1007/s00226-024-01596-5","DOIUrl":"10.1007/s00226-024-01596-5","url":null,"abstract":"<div><p>In view of developing upcycling strategies for hardwood Kraft lignin, hydroxy-methylation of Eucalyptus Kraft lignin under alkaline conditions (pH 9 and 11) at different temperatures (50 °C and 70 °C) was studied in the present effort with the double objective of optimizing the reaction conditions and understanding the functionalization mechanism of C<sub>5</sub> in either terminal or internal guaiacyl units during hydroxy-methylation. Formaldehyde consumption was estimated via titration of the oximated free formaldehyde; the hydroxy-methylation degree under the reaction was estimated by calculating the ratio in Condensed hydroxyl/Guaiacyl (Condensed OH/G-OH) via a new difference UV-spectroscopy. The reliability of the difference UV-method results for the analyses of the hydroxy-methylated lignins was statistically analysed and compared with that of vacuum-dried and sonicated samples. Hydroxy-methylated samples were then fully characterised by NMR (<sup>31</sup>P and HSQC) and GPC. The reaction temperature of 50 °C, pH 11, and period time of one hour resulted as the optimal conditions for the hydroxy-methylation, preventing the side-reactions leading to the formation of dimethylene-glycol addition products. The <sup>31</sup>P and <sup>1</sup>H–<sup>13</sup>C HSQC NMR revealed the absence of undesirable formaldehyde <i>Cannizzaro</i> by-products and the lack of hydroxymethyl groups in the aliphatic side chain under the studied conditions. GPC analyses, comparing two methodologies, revealed increases in molar mass of the hydroxy-methylated samples upon the formaldehyde addition. The selective hydroxy-methylation at the C5 guaiacyl site demonstrates that Eucalyptus Kraft lignin is as a promising candidate for resol production.</p></div>","PeriodicalId":810,"journal":{"name":"Wood Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phenolic compounds related to heartwood coloration of Millettia pendula 与悬铃木心材着色有关的酚类化合物

IF 3.1 2区农林科学

Wood Science and Technology Pub Date : 2024-09-11 DOI: 10.1007/s00226-024-01600-y

Yusuke Taga, Kosei Yamauchi, Tohru Mitsunaga

引用次数: 0