通讯机构：
[Minglei Wang; Guozhong Wu] S;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, People’s Republic of China<&wdkj&>Institute of Environmental Engineering, ETH Zürich, Zurich, Switzerland<&wdkj&>Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, People’s Republic of China<&wdkj&>School of Physical Science and Technology, ShanghaiTech University, Shanghai, People’s Republic of China
作者机构：
[Yuan, Guangming; Zuo, Yingfeng; Li, Ping; Zhang, Yuan; Bi, Xiaoqian; Li, Xianjun] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Yingfeng Zuo; Xianjun Li] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, People’s Republic of China<&wdkj&>College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, People’s Republic of China
摘要：
Biochar, a carbon-rich porous material derived from biomass, receives increasing attention and interests in recent years. Research development of biochar-related topic is rarely reported at macroscopic perspective. This work gives an overview of biochar application in wastewater treatment based on bibliometric analysis. 2196 articles related to the topic were collected from Web of Science database with period of 2000-2021. The publications were examined using bibliometric tools of Bibliometrix package, CiteSpace, and VOSviewer. Publications output, subject categories, journals authors, institutions, and countries were analyzed. Detailed analysis of keywords from perspectives of co-occurrence network, keyword clusters, citation bursts, and Sankey diagram was conducted. A rapid development of researches on the topic is observed in the past 5 years, and the annual publications increase sharply from 109 in 2016 to 698 in 2021. The leading subject category is Environmental Science, and the journal of Environmental Science and Pollution Research publishes the most articles. The most productive country, institution, and author are China, Chinese Academy of Sciences, and Yong Sik Ok from Korea University, respectively. There exists close cooperation between countries and researchers. The fabrication of functional biochar and contaminant removal from wastewater via adsorption and catalytic degradation have been widely studied. The preparation of functional biochar, the development of techniques, and the in-depth understanding or contaminant removal are research trends. This work provides an overview of wastewater treatment associated with biochar, and offers insights into the research development and future trends.
作者机构：
[Guan, Mingyu; Li, Gangyong; Hou, Zhaohui; Wang, Wei; Chen, Liang; Wang, Qinghua; Zhu, Yucan; Yin, Hong] Hunan Inst Sci & Technol, Sch Chem & Chem Engn, Key Lab Hunan Prov Adv Carbon Based Funct Mat, Yueyang 414006, Peoples R China.;[Wang, Wei] Guangxi Normal Univ, Guangxi Key Lab Low Carbon Energy Mat, Guilin 541004, Peoples R China.;[Chen, Yangyang] Cent South Univ Forestry & Technol, Coll Mat Sci & Technol, Changsha 410004, Peoples R China.
通讯机构：
[Wei Wang; Zhaohui Hou] K;Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China<&wdkj&>Guangxi Key Laboratory of Low Carbon Energy Material, Guangxi Normal University, Guilin, China<&wdkj&>Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China
关键词：
SBS modified asphalt;Recycling;Rejuvenator;Combined utilization;Rheological properties;Micro characteristics
摘要：
Styrene-butadiene-styrene block copolymers (SBS) modified asphalt has been the main binder applied in the surface course of high-grade asphalt pavement. However, as more and more pavements are entering into the maintenance period, a mass of waste SBS modified asphalt mixtures are produced. To effectively restore the performance of field-aged SBS modified asphalt (SBSMA), a novel rejuvenator (RA) combined with fresh SBSMA was used in this research. The rheological properties of recycled SBSMA were investigated using dynamic shear and bending beam rheometer tests, and the micro characteristics were characterized by fluorescence microscopy, Fourier transforms infrared spectroscopy and chemical composition tests. The results indicate that RA can lessen the aging behavior of recycled SBSMA from the molecular structure, enhance the compatibility between SBS modifier and asphalt in recycled SBSMA. The combined utilization of RA and new SBSMA can effectively recover the high, intermediate and low temperature rheological properties of recycled SBSMA. Moreover, when the ratio of aged SBSMA with RA to new SBSMA is 0.45:1, the recycled SBSMA has the closest continuous performance grade to new SBSMA.
期刊：
Separation and Purification Technology,2023年306:122521 ISSN：1383-5866
通讯作者：
Rongkui Su<&wdkj&>Liqing Li
作者机构：
[Xu, Wenjun; Ma, Xiancheng] Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Liqing; Zeng, Zheng] Cent South Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China.;[Su, Rongkui; Wang, Hanqing] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410083, Hunan, Peoples R China.;[Shao, Lishu] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha, Peoples R China.
通讯机构：
[Rongkui Su] C;[Liqing Li] S;College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410083, Hunan, China<&wdkj&>School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan, China
摘要：
Porous carbon is one of the important CO2 adsorbents being developed at present. However, interpreting the potential mechanism of CO2 adsorption by porous carbon is still challenging due to their various functional groups, different structural characteristics and different adsorption conditions (temperature and pressure) during CO2 adsorption. Here, this study firstly applied machine learning to study the effects of pore structure, chemical properties, and adsorption conditions on CO2 adsorption performance based on 1594 CO2 adsorption datasets, and to predict CO2 adsorption capacity. The results show that the R2 of the random forest (RF) model is above 0.97 on the training and test data, which has good prediction performance. According to RF analysis results, the nitrogen groups of porous carbon have the greatest impact on CO2 capture at 0–0.15 bar, while ultra-micropores have the greatest impact on CO2 capture at 0.15–1 bar. Subsequently, we prepared three kinds of porous carbons with different pore structures and functional groups, and carried out CO2 adsorption isotherm tests. The results were consistent with the results of machine learning. However, the above results hardly reveal the effect of functional group type and pore size on CO2 capture. Finally, the relative importance of pore size and functional group on CO2 adsorption under different pressures was calculated by molecular simulation, and the mechanism of CO2 adsorption by a single pore size and functional group species was revealed. The results based on the aforementioned machine learning, experimental data and molecular simulation are of great significance for predicting gas adsorption and guiding the development of the carbon-based adsorbents.
期刊：
Materials Research Express,2023年10(7):075507 ISSN：2053-1591
通讯作者：
Guo, X
作者机构：
[Zhu, Zezheng; Sun, Weisheng; Zhang, Yi; Chen, Yulian; Liu, Pengwei; Guo, Xi; Qiu, Chendong; Weng, Lu; Chen, Xinyu] Zhejiang Agr & Forestry Univ, Coll Chem & Mat Engn, Hangzhou, Peoples R China.;[Lin, Xianxian] Cent South Univ Forestry & Technol, Coll Mat Sci & Technol, Changsha, Peoples R China.;[Wei, Renzhong; Lu, Tonghua] Treezo New Mat Technol Grp Co Ltd, Hangzhou, Peoples R China.
通讯机构：
[Guo, X ] Z;Zhejiang Agr & Forestry Univ, Coll Chem & Mat Engn, Hangzhou, Peoples R China.
关键词：
wood-based phase change material;temperature regulation;photothermal conversion;thermal energy storage
摘要：
Phase change materials attract tremendous interest for building energy conservation due to their auto-temperature regulation and thermal energy storage capacity. However, its practical application is hindered due to the leakage problem and poor photothermal conversion efficiency. To address these issues, a scalable wood-based phase change material was prepared by impregnating polyethylene glycol (PEG) into wood particles doped with Fe3O4 and subsequent a hot press in this study. PEG was encapsulated by wood particles through its abundant pore structure and leakage rate of prepared wood-based phase change material (FWPCM) was only 2.9%, which solved the leakage problem effectively. FWPCM presented high latent heat of 73 J g(-1) and slowed down the temperature change obviously. Addition of Fe3O4 powder endowed FWPCM a high photothermal conversion efficiency and thermal conductivity (0.3545 W/(m*K) was increased by 125% compared to PW. So FWPCM had potential to be used as building engineering material for energy collecting, storage and conversion benefited by its great thermal performance, superior durability, simple preparing process and acceptable mechanical property.
通讯机构：
[Wenfang Gong; Deyi Yuan] K;Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education and Key Laboratory of Non-Wood Forest Products of the Forestry Ministry, Central South University of Forestry and Technology , Changsha, Hunan 410004, China
摘要：
Camellia oil extracted from the seeds of Camellia oleifera Abel. is a popular and high-quality edible oil, but its yield is limited by seed setting, which is mainly caused by self-incompatibility (SI). One of the obvious biological features of SI plants is the inhibition of self-pollen tubes; however, the underlying mechanism of this inhibition in C. oleifera is poorly understood. In this study, we constructed a semi-in vivo pollen tube growth test (SIV-PGT) system that can screen for substances that inhibit self-pollen tubes without interference from the genetic background. Combined with multi-omics analysis, the results revealed the important role of galloylated catechins in self-pollen tube inhibition, and a possible molecular regulatory network mediated by UDP-glycosyltransferase (UGT) and serine carboxypeptidase-like (SCPL) was proposed. In summary, galloylation of catechins and high levels of galloylated catechins are specifically involved in pollen tube inhibition under self-pollination rather than cross-pollination, which provides a new understanding of SI in C. oleifera. These results will contribute to sexual reproduction research on C. oleifera and provide theoretical support for improving Camellia oil yield in production.
摘要：
A novel hybrid material derived from wood and acid nanospheres was synthesized by facile in-situ self-assembly of phosphotungstic acid (HPW) and triethylamine (TEA) at room temperature. The uniformly dispersed amphiphilic TEA-PW nanospheres furnished the wood with controlled particle sizes, and the acid capacity of the material could be altered by varying the molar ratio of HPW and TEA. Furthermore, the TEA-PW/wood hybrid had good anti-leach properties, which were attributed to the acid nanospheres' amphiphilicity. Notably, the hybrid material displayed excellent flame-retardant characteristics even with a low dose of the TEA-PW nanospheres (only 18.6 mass %), resulting in a UL-94V-0 rating and a 41.4% and 44.8% decrease in the pk-HRR and TSR of the untreated wood, respectively. Effective flame retardation was primarily attributed to synergistic effects, molecular firefighting properties, and catalytic carbon reactions in the condensed phase high-density nitrogen-phosphorus-oxygen cross-linking network carbon layer, as well as the capture or dilution of flammable gases by free radicals. In conclusion, this hybrid material may provide new possibilities for the development of fire-resistant woods. (c) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
摘要：
Nanocrystalline cellulose (NCC) preparation in an integrated fractionation manner is expected to solve the problems of low yield and environmental impact in the traditional process. An integrated fractionation strategy for NCC production from wood was developed through catalytic biomass fractionation, the partial dissolution of cellulose-rich materials (CRMs) in aqueous tetrabutylphosphonium hydroxide, and short-term ultrasonication. The presented process could tolerate a high CRM lignin content of 21.2 wt % and provide a high NCC yield of 76.6 wt % (34.3 wt % of the original biomass). The increase in the CRM lignin content decreased the NCC yield, facilitated the crystal transition of NCC from cellulose I to cellulose II, and showed no apparent effects on the NCC morphology. A partial/selective dissolution mechanism is proposed for the presented strategy. This study provided a promising efficient fractionation-based method toward comprehensive and high-value utilization of lignocellulosic biomass through effective delignification and high-yield NCC production.
作者机构：
[Fan, Shutong; Li, Xianjun; Li, XJ] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.;[Gao, Xun] Wenzhou Univ Technol, Coll Architecture & Energy Engn, Wenzhou 325006, Peoples R China.;[Pang, Jiuyin] Beihua Univ, Key Lab Wooden Mat Sci & Engn Jilin Prov, Jilin 132013, Peoples R China.;[Liu, Guanlin] State Grid Longjing Power Supply Co, Longjing 133400, Peoples R China.
通讯机构：
[Gao, X ] W;[Li, XJ ] C;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.;Wenzhou Univ Technol, Coll Architecture & Energy Engn, Wenzhou 325006, Peoples R China.
关键词：
preservative performance;pine wood;nano-xylan;high temperature and high-pressure steam;vacuum impregnation
摘要：
This study used environmentally friendly nano-xylan to enhance the drug loading and preservative performance (especially against white-rot fungi) of pine wood (Pinus massoniana Lamb), determine the best pretreatment, nano-xylan modification process, and analyze the antibacterial mechanism of nano-xylan. High-temperature, high-pressure steam pretreatment-assisted vacuum impregnation was applied to enhance the nano-xylan loading. The nano-xylan loading generally increased upon increasing the steam pressure and temperature, heat-treatment time, vacuum degree, and vacuum time. The optimal loading of 14.83% was achieved at a steam pressure and temperature of 0.8 MPa and 170 °C, heat treatment time of 50 min, vacuum degree of 0.08 MPa, and vacuum impregnation time of 50 min. Modification with nano-xylan prohibited the formation of hyphae clusters inside the wood cells. The degradation of integrity and mechanical performance were improved. Compared with the untreated sample, the mass loss rate of the sample treated with 10% nano-xylan decreased from 38 to 22%. The treatment with high-temperature, high-pressure steam significantly enhanced the crystallinity of wood.
