ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Pengfei Zhang,Nengwu Zhu,Fei Li,Fangyuan Li,Wei Leng,Yunhao Xi,Pingxiao Wu,Sihai Zhang
High-value utilization and pollution control of municipal solid waste incineration fly ash (MSWI FA) are global concerns. While microcrystalline glass has emerged as a promising solution, the immobilization and reduction of heavy metals remains a critical bottleneck hindering its application. This study proposed a synergistic preparation of high-performance and low-residue microcrystalline glass by MSWI FA, secondary aluminum ash (SAA), and fluorite tailings (FT). The prepared microcrystalline glass exhibited excellent performance, with Vickers hardness, and acid and alkali corrosion resistance reaching up to 8.71 GPa, 99.83 %, and 99.97 %, respectively. The deposited and semi-deposited heavy metals including Ba, Cu, and Cr were crystallized by replacing anorthite, diopside, and spinel to form a solid solution with immobilization efficiencies of 99.82 %, 98.51 %, and 99.12 %, respectively. Meanwhile, 97.47 % of Zn, 99.18 % of Pb, 100 % of Cd, 45.96 % of Cu, and 99.89 % of Cl could be volatilized and enriched in the secondary ash. Therefore, the proposal strategy of microcrystalline glass preparation by MSWI FA, SAA, and FT could be a potential route for high-value utilization.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
He Wentao,Tan Lei,Wu Yongjia,Wei Yongchun,Chen Yiyang,Li Dan,Wang Guxia,Qian Yongqiang,Guo Shengwei
Cellulose is a bio-based material that has garnered increasing research interest due to its abundant reserves and excellent properties. However, its inherent flammability limits its widespread use. This study addresses this issue by combining cellulose with industrial waste fly ash (FA), not only mitigating its flammability but also transforming FA into a value-added product. Through hot pressing and freeze-drying processes, flame-retardant cellulose/FA films and foams were developed. This experimental method not only enhances the application potential of cellulose but also promotes the high-value reuse of FA, aligning with sustainable development principles. SEM images reveal good interaction between FA and cellulose. In terms of thermal performance, the maximum decomposition rates of C1-Fx and C2-Fx decreased systematically with increasing FA content. The addition of FA significantly improved flame retardancy, with the limiting oxygen index (LOI) of C1-F30 and C2-F30 reaching approximately 31% and 29%, respectively. Furthermore, the peak heat release rate of C2-Fx significantly decreased from 363.6 to 118.2 kW/m 2 , and the total heat release dropped from 7.3 to 4.1 MJ/m 2 . In summary, this study successfully utilized industrial waste FA to develop a bio-based flame-retardant material through a straightforward process, offering a viable solution to enhance the flame retardancy of cellulose and promote the reutilization of industrial waste.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
BIOMACROMOLECULES
·
2023
·
IF 6.2
Yan Li,Mingjie Chen,Huiming Liu,Dandan Zhang,Qing-Shan Shi,Xiao-Bao Xie,Yanzhu Guo
A major challenge to make use of lignin as an antimicrobial material is the weak antimicrobial activity of industrial lignin. Inspired by the antimicrobial mechanism of actions of antimicrobial peptides, alkyldiamines were employed as lysine mimics for lignin modifications. Accordingly, aminoalkyl-modified lignins with different degrees of substitution of amino groups and different hydrophobicity were synthesized. The chemical structure, properties, and antimicrobial activities of the as-prepared aminoalkyl lignins were thoroughly characterized with state-of-the-art technologies. The results indicated that aminobutyl lignin showed enhanced antimicrobial activity against S. aureus and E. coli and performed even better than copper ions. The antimicrobial mechanism of action of the as-prepared aminobutyl lignin was similar to that of polylysine, which damaged the cell membrane, leading to the leakage of intracellular molecules and death of the cell. This study provides a feasible approach to afford modified lignin with enhanced antimicrobial performance, which would facilitate the high-value valorization of lignin as biological materials.
研究领域:
生物材料
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化学工程
·
微生物学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Qingxuan Yin,Shumin Wang,Haoyu Deng,Junyou Shi,Dan Zhang,Wenbiao Xu
Understanding the structural diversity of lignin is crucial for its efficient conversion into high-value aromatic compounds. However, the impact of lignin's structural characteristics from artificial forests on catalytic depolymerization is not well understood. This study investigates the structural differences in lignin from larch trees of varying ages (10, 20, and 40 years) and anatomical parts (heartwood, sapwood, canopy, bark) to understand how these variations influence catalytic depolymerization. Polyoxometalates (POMs) were selected as catalysts due to their high efficiency in facilitating the conversion of lignin into valuable chemical products. By utilizing POMs for catalytic oxidation, we explore the relationship between lignin structure and depolymerized products, providing insights into the structural features of larch lignin. Our findings reveal that the β-O-4 content of heartwood lignin is as high as 78.7 %, while that of the canopy is lower at 67.1 %. Additionally, the unique lignin structure significantly impacted the yield and selectivity of aromatic monomers, with the highest monomer yield from heartwood lignin reaching 15.64 %, compared to the lowest yield of 7.46 % from canopy lignin. These results lay a theoretical foundation for developing efficient biomass conversion technologies and offer novel strategies for sustainable biomass utilization and environmentally friendly production.
研究领域:
林学
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生物质化学
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DOI
高影响因子
Energy Science & Engineering
·
2025
·
IF 3.4
Zhangyang Li,Chunling Wang,Daoping He,Fangming Jin
Photocatalytic biomass valorization toward multicarbon chemicals holds promise for sustainable energy solutions. Nevertheless, this approach suffers from dual challenges: inherent instability of polyhydroxy intermediates and inefficient formic acid production under ambient conditions. Here, we demonstrated that a TiO 2-x photocatalyst with oxygen vacancies can effectively catalyze the transformation of glucose into arabinose, erythrose, and formic acid using O 2 as an oxidant in pure water under natural sunlight irradiation. The C 1 −OH group of glucose adsorbed on the oxygen vacancies of TiO 2-x undergoes photo-induced hole oxidation, leading to the formation of gluconolactone-TiO 2-x as a new motif. Subsequent cleavage of bonds by ·OOH radicals generated from oxygen reduction produces arabinose, erythrose, and formic acid. The oxygen vacancy strategy achieves a remarkable 53.9% yield for glucose oxidation, which exhibits 10.8-fold enhancement compared to that of conventional TiO 2 without oxygen vacancies, thereby opening new avenues for developing efficient photocatalytic systems for sustainable biomass valorization.
研究领域:
光催化
·
生物质转化
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材料科学
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环境化学
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可持续能源
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 47
·57822-57831
·
IF 0
Liu Yifan,Xu Zhuangqin,He Yuting,Liu Minghua,Lin Chunxiang,Lv Yuancai
A synergistic photocatalytic system based on Fe-based perovskite with persulfate was constructed for alkali lignin (AL) degradation in pulp and paper wastewater. The degradation performance and mechanism on AL were carried out under ambient temperature and pressure, accompanied by visible light irradiation. The results showed that the synergistic photocatalytic system exhibited much better performance on AL degradation than the single catalytic system. The degradation efficiency reached 73.5% under the optimal conditions and was constant at around 65% over the pH range from 2 to 8. A significant escalation of the AL degradation was observed at pH 10, reaching 80.1%. The photogenerated holes, 1 O 2 and SO 4 − ·, generated by the system were involved in the degradation, and the holes played a dominant role. During the degradation process, the efficient promotion of cleavage events in lignin methoxy, β -O-4 bond, and benzene ring was observed. Consequently, the depolymerization process led to the generation of high-value compounds, namely p -hydroxybenzaldehyde and vanillin. Remarkably, the yields of the high-value compounds in the synergistic photocatalytic system were five times larger than those in the control. This study offered a viable method to activate persulfate for alkali lignin degradation and to achieve a mutually beneficial strategy for wastewater treatment and recycling.
研究领域:
环境科学
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废水处理工程
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光催化技术
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产品关联
DOI
PubMed
CELLULOSE
·
2025
·
IF 4.8
Jin Mengyu,Wu Detong,Song Yuanbo,Shi Yang,Wang Xiaoxia,Shen Zheng,Zhang Yalei
This study presents an efficient strategy for converting high-boiling solvent (HBS) pretreated cellulose into lactic acid (LA) over a Cr-Sn-Beta bimetallic catalyst synthesized by flash Joule heating (FJH). Ethylene glycol-based HBS pretreatment effectively enriched cellulose content in straw, while the FJH method enabled rapid and uniform metal incorporation. The resulting Cr-Sn-Beta catalyst exhibited a maximum LA yield of 33.54% with a carbon balance of 90.08%, showing high selectivity and catalytic efficiency. The synergistic function of Cr and Sn acid sites was also evaluated. This work provides a promising route for biomass valorization and catalyst design via combined pretreatment and advanced synthesis techniques.
研究领域:
催化
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生物质转化
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 26
·期 17
·8341
·
IF 4.9
Bo Yu,Liwen Huang,Yuhan Ding,Ning Zhang,Kexin Li,Yuanbao Jin,Zhihua Wu
Naringin and pectin were innovatively and sequentially extracted from naturally dropped fruit of pomelo (NDFP), optimizing yields via response surface methodology (RSM). Under optimized conditions, naringin was extracted first with 70% ethanol (70 °C, 110 min, SSR 15:1v/w), followed by pectin extraction from the residue using pH 1.50 acetic acid (80 °C, 160 min, ratio 40:1v/w) naringin yield reached 42.77% with 97.6% ± 0.31% HPLC purity, while pectin yield was 14.32%. Critically, the recovered pectin was identified as low-ester and exhibited significantly superior antioxidant activity compared to commercial pectin. This work establishes an efficient sequential extraction process valorizing waste pomelo drop, yielding high-purity naringin and antioxidant-rich, low-ester pectin.
研究领域:
食品科学
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化学工程
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天然产物提取
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生物化学
·
废弃物管理
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产品关联
DOI
PubMed
高影响因子
Science Advances
·
2020
·Vol. 6
·期 45
·
IF 13.117
Jiang Yan,Qinglei Meng,Xiaojun Shen,Bingfeng Chen,Yang Sun,Junfeng Xiang,Huizhen Liu,Buxing Han
Phenol is an important commodity chemical in the industry, which is currently produced using fossil feedstocks. Here, we report a strategy to produce phenol from lignin by directly deconstructing C sp2 –C sp3 and C–O bonds under mild conditions. It was found that zeolite catalyst could efficiently catalyze both the direct C sp2 –C sp3 bond breakage to remove propyl structure and aliphatic β carbon–oxygen (C β– O) bond hydrolysis to form OH group on the aromatic ring. The yield of phenol could reach 10.9 weight % with a selectivity of 91.8%. In this unique route, water was the only reactant besides lignin. A scale-up experiment showed that 4.1 g of pure phenol could be obtained from 50.0 g of lignin. The reaction pathway was proposed by a combination of control experiments and density functional theory studies. This work opens the way for producing phenol from lignin by direct transformation of C sp2 –C sp3 and C–O bonds in lignin.
研究领域:
催化
·
绿色化学
·
生物质转化
·
化学工程
·
有机化学
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DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 27
·
IF 12.5
Haichao Li,Deqiang Li,Yuan He,Chaobing Luo,Wu Lan,Arthur J. Ragauskas,Tingting You,Feng Xu
Highly efficient conversion of lignin into value-added chemicals and materials is trapped in the inevitable cleavage of β-O-4 linkages and formation of highly condensed structures with deep colors during lignin isolation. Here, we develop a trifunctional choline chloride/glyoxylic acid (ChCl/GA) binary deep eutectic solvent with a π-π conjugate structure and moderate acidity for the fast isolation of light-colored lignin with near proto-structures (exceeding 88% of delignification ratio for 1 hour). The synergetic interaction of GA and ChCl substantially reduced Gibbs free energy of acetal reaction and thoroughly captured reactive intermediates, precisely activating the following key functions: stabilizing β-O-4 linkages, inhibiting condensation reaction, and shielding –OH groups. These enabled efficient isolation of uncondensed, abundant β-O-4 linkage (45.80/100 C9; 79% retention) and light-colored lignin. A near-theoretical yield of aromatic monomers upon depolymerization and high performances as adhesives for lignocellulosic bioplastics were achieved. This work unleashes the valorization potential of lignin by a relatively green and fast strategy for sustainable biorefineries.
研究领域:
化学工程
·
材料科学
·
绿色化学
·
生物技术
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yiling Chen,Yong Qin,Haixin Yi,Xiaoyu Cui,Xu Wang,Xiangyu Xu,Yongmei Chen,Fuchuan Li,Wenshuang Wang
Glucans, as versatile biomacromolecules, hold significant application potential across various industries. Volutharpa ampullacea perryi , an affordable deep-sea gastropod, demonstrates considerable commercial promise. In this study, a novel sulfated α-glucan (VpG) was isolated and identified from Volutharpa ampullacea perryi for the first time. Compared to other α-sulfated glucans, it has a high degree of sulfation (18.6 %) and an ultra-high molecular weight of approximately 2250 kDa. Further NMR analysis, including 1 H, 13 C, COSY, TOCSY, HSQC and HMBC, revealed that the anomeric signals at 5.35 ppm dominated. Therefore, VpG is mainly consisted of a repeating α-(1 → 4)-linked glucose backbone with β-(1 → 6) and β-(1 → 3)-linked glucosyl branches. Furthermore, bioactivity evaluation demonstrated that VpG significantly alleviates inflammation in dextran sulfate sodium-induced mouse models of ulcerative colitis, effectively inhibiting body weight loss by 20 % and colon shortening by 31.26 %. The strong anti-inflammatory activity of VpG indicates its potential in pharmaceutical development and provides a novel approach for the high-value utilization of Volutharpa ampullacea perryi .
研究领域:
天然产物化学
·
糖生物学
·
炎症免疫学
·
药物开发
·
海洋生物资源利用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Case Studies in Construction Materials
·
2025
·
IF 6.6
Xiaer Xiahou,Xingyuan Ding,Keke Yu,Cong Lu
This study investigates the sustainable valorization of recycled polyethylene terephthalate (rPET) fibers through dopamine surface modification for enhanced 3D printed concrete (3DPC). Comprehensive tests on flowability, rheology, buildability, and mechanical anisotropy were conducted to assess the impacts of various MPET fiber content (0–0.5 vol%). The results showed that 0.5 vol% MPET fibers significantly increased dynamic yield stress and plastic viscosity by 247.6 % and 200.0 %, respectively, compared to the control group (P-0), while moderately reducing flowability. The 0.3 vol% content was found to be optimal, enhancing maximum printing heights in hollow cylindrical and rectangular structures by 114.8 % and 130 %, respectively, compared to the control. At this content, the 30-minute early compressive strength reached 66.0 MPa. Quantitative analysis revealed a strong correlation (R² > 0.94) between early strength development parameters and buildability performance, with rate of strength gain exerting greater influence than initial strength. Mechanical anisotropy tests showed that MPET fibers significantly enhanced the flexural strength of 3DPC in the Z-direction of printing. Scanning electron microscopy (SEM) analysis confirmed that dopamine modification significantly enhanced the fiber-matrix interface bonding. This research applies modified recycled PET fibers to enhance 3DPC performance while contributing to sustainability efforts in the construction sector, supporting approaches that integrate material recycling with technical innovation.
研究领域:
土木工程
·
材料科学
·
可持续建筑
·
聚合物复合材料
·
增材制造
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）