ENERGY & FUELS
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2015
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IF 2.79
Yetao Jiang,Zheng Li,Xing Tang,Yong Sun,Xianhai Zeng,Shijie Liu,Lu Lin
In the present study, cellulolytic enzyme lignin, which was isolated from enzymatic hydrolysis residues of bamboo, could be efficiently depolymerized into oily products with a yield of over 60 wt % using a range of acidic zeolites and/or Raney Ni catalysts. The degraded products are mainly composed of phenolic monomers, which can be used as versatile chemicals or the precursor for biofuel production. The yields of monophenols were 12.9 wt % and no more than 5.0 wt % when catalyzed by Raney Ni or acidic zeolites, respectively. However, a yield of monophenols as high as 21.0–27.9% was obtained using a Raney Ni combination with acidic zeolite catalysts. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry analysis revealed that the depolymerization level of the oily fraction catalyzed by a combination of catalysts was more complete in comparison to those catalyzed by an independent catalyst. The results indicated that the catalytic activity of a fully heterogeneous catalyst combination for the depolymerization of cellulolytic enzyme lignin was proven to be superior to that of either component alone.
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高影响因子
POLYMER
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2017
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IF 3.684
Yanli Ma,Ling Lv,Yuanru Guo,Yujie Fu,Qian Shao,Tingting Wu,Sijie Guo,Kai Sun,Xingkui Guo,Evan K. Wujcik,Zhanhu Guo
Lignin grafted N, N′-methylene-bisacrylamide (LM) was copolymerized with acrylic acid (AA) to fabricate lignin based poly (acrylic acid) (LBPAA) nanocomposites, and organo-montmorillonite (OrgMMT) was uniformly dispersed in LBPAA by ultrasonic method. The water absorbency in KCl solution was 302.9 g/g for LBPAA/OrgMMT (3 wt% OrgMMT, 43.65 wt% LM, and 53.35 wt% poly(acrylic acid) (PAA)), higher than PAA/OrgMMT (104.5736 g/g), and PAA (131.8 g/g). The Pb 2+ adsorption for LBPAA/OrgMMT was demonstrated to be pH-dependent and followed Freundlich multilayer adsorption , with the removal following a pseudo-second-order kinetic model . The Pb 2+ absorption capacity of LBPAA (PAA 48.50/48.50 LM)/OrgMMT (3 wt%) was 1.0803 mmol·g −1 , the highest among the composites. When the mole ratio of Na + and Pb 2+ was less than 0.21, the Pb 2+ adsorption capacity of LBPAA/OrgMMT decreased slightly. The negative ΔG 0 indicated that the Pb 2+ adsorption process for composite hydrogel and PAA was spontaneous. XPS analysis data indicated that Pb 2+ ions formed Pb-O bonds by hydroxyl groups and carboxyl groups for efficient lead ion adsorption. This study demonstrates that LBPAA/OrgMMT can be used as a water retention agent with salt tolerance and as an adsorbent for removing Pb 2+ ions from industrial waste water .
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高影响因子
BIORESOURCE TECHNOLOGY
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2016
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IF 4.917
Cheng Cai,Xueqing Qiu,Meijun Zeng,Meilu Lin,Xuliang Lin,Hongming Lou,Xuejuan Zhan,Yuxia Pang,Jinhao Huang,Lingshan Xie
Polyvinylpyrrolidone (PVP) is an antifouling polymer to resist the adsorption of protein on solid surface. Effects of PVP on the enzymatic hydrolysis of pretreated lignocelluloses and its mechanism were studied. Adding 1 g/L of PVP8000, the enzymatic digestibility of eucalyptus pretreated by dilute acid (Eu-DA) was increased from 28.9% to 73.4%, which is stronger than the classic additives, such as PEG, Tween and bovine serum albumin. Compared with PEG4600, the adsorption of PVP8000 on lignin was larger, and the adsorption layer was more stable and hydrophilic. Therefore, PVP8000 reduced 73.1% of the cellulase non-productive adsorption on lignin and enhanced the enzymatic hydrolysis of lignocelluloses greatly.
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PubMed
高影响因子
CHEMOSPHERE
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2017
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IF 4.208
Dan Li,Hongxing Chen,Ran Bi,Haibo Xie,Yu Zhou,Yongju Luo,Lingtian Xie
In recent years, many new chemicals have been synthesized from biomass with an aim for sustainable development by replacing the existing toxic chemicals with those having similar properties and applications. However, the effects of these new chemicals on aquatic organisms remain relatively unknown. In this study, the effects of bisphenol A (BPA) and lignin-derived bisphenol (LD-BP, a BPA analogue) on Daphnia magna were evaluated. The animals were exposed to BPA, LD-BP, and their binary mixture at concentrations (2–2000 μg L −1 ) for 21 days. The expression of various biochemical markers and the effects on growth, molting, and reproduction parameters were examined. The results showed that the weight of daphnids significantly increased after exposure to BPA, LD-BP, and the binary mixture relative to that of the control animals. The activity of superoxide dismutase was significantly inhibited by LD-BP and the binary mixture. At the highest exposure concentration of the binary mixture, the activities of acetylcholinesterase and α-glucosidase, fecundity, and the number of neonates per brood were significantly altered. Our results showed that the effects of BPA and LD-BP on D. magna were generally comparable, except for the effect on the weight at their environmentally relevant concentrations (e.g., <20 μg L −1 ). The effects on the reproduction of D. magna could be mainly due to the shift in energy redistribution under BPA and LD-BP exposures. Our results implied that exposures to both BPA and LD-BP could potentially cause deleterious effects at the population level in D. magna .
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PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Xiaoran Li,Kehui Cen,Jinjin Li,Chu Wang,Dongxia Jia,Dengyu Chen
In this study, cellulose and lignin were subjected to co-pyrolysis for the production of syngas. For the pyrolysis experiments, three influencing factors were selected using a response surface method: pyrolysis temperature (400–800 °C), residence time (5–30 min), and lignin mass percentage (0–100 wt%). At a pyrolysis temperature of 477.4 °C, a residence time of 30 min, and a lignin mass percentage of 50 wt%, the actual syngas yield was 77.2 % higher than the theoretical value for the co-pyrolysis. In addition, the hydrogen volume fraction was improved by up to 24.87 % because of the interaction between cellulose and lignin during their co-pyrolysis (pyrolysis temperature of 800 °C, residence time of 17.5 min, lignin mass percentage of 80.65 wt%). Finally, the hydrogen formation process was simulated, using reactive force field molecular dynamics. The results showed that hydrogen molecules began to appear at a simulation time of 0.479 ns and then gradually increased in number with progressing simulation time. In addition, the hydrogen generation pathways were obtained by this simulation method. This study provides a data foundation for optimizing syngas and hydrogen production from biomass.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yuqing Liao,Wuxia Ge,Min Liu,Wentao Bi,Can Jin,David Da Yong Chen
In this study, a simple and eco-friendly method was used to treat alkaline lignin with an acidic deep eutectic solvent (DES) to obtain regenerated lignin for the efficient adsorption of pollutant dyes from aqueous environment. Based on the yield and adsorption capacity of the sorbent for these dyes, conditions such as the type and concentration of DES component, solid-to-liquid ratio, reaction time, and temperature were optimized. By characterizing and comparing alkali lignin with regenerated lignin, a series of reactions were demonstrated to occur during the DES treatment process. The performance and mechanism of methylene blue and rhodamine B adsorption on regenerated lignin were studied systematically, and the maximum adsorbed amounts were 348.29 and 551.05 mg/g at 323 K, respectively. This study provides a new strategy for the green preparation of functionalized lignin and its use in the water pollutant treatment.
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高影响因子
APPLIED ENERGY
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2024
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IF 10.1
Jingmeng Sun,Jianuo Xu,Si-Jie Zhou,Yao Pang,Weiye Zhang,Jun Zhou,Yi Liu,Hongwu Guo,Feng Jiang
Incorporating phase change materials (PCMs) into buildings represents a strategic method for reducing reliance on air conditioning systems and decreasing energy usage consequently. Inspired by leaf veins providing channels for transpiration, lignin porous carbon (LPC) was synthesized by chemical activation, showing a vein pore structure . The capillary network system of the LPC provided more channel to adsorb PCM through surface tension and capillary force , achieving an impressive loading capacity of LPC for polyethylene glycol (PEG) (75%), which demonstrated exceptional heat storage capability (133.21 J/g). The lignin-derived wood-plastic composite (L-WPC) was further prepared. With the gradual increase of LPC/PEG, the latent heat of L-WPC increased gradually. The ΔH m, ΔH c and energy storage efficiency of L-WPC-50 (incorporated 50 wt% LPC/PEG-75) reached 39.99 J/g, 42.65 J/g and 90.26%, respectively. The vein pore structure of LPC also provided a thermal conductivity link for L-WPC. L-WPC-50 demonstrated an increased thermal conductivity (0.66 W/(m·K)) and a reduced thermal diffusion coefficient (0.24 mm 2 /s), optimizing the effectiveness of the phase transition. Additionally, L-WPC-50 displayed satisfactory mechanical properties and dimensional stability, with tensile strength , bending modulus and water absorption thickness swelling rate measuring 14.40 MPa, 1043.72 MPa, and 1.61% respectively. It introduced a feasible approach for utilizing biomass in enhancing building energy efficiency , marking a significant stride towards reducing building energy consumption and advocating sustainable energy practices.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Chongxiao Ge,Rui Hu,Jingyan Zhu,Jiajing Huang,Cancan Zhang,Yaqiong Zhang,Yuxian Xing,Bin Zhang,Feng Jiang
Developing sustainable elastomers derived from natural resources is crucial to mitigate environmental pollution yet challenging on account of their limited properties. In this work, chitin, lignin, and plant oil were selected as the feedstocks to design renewable bottlebrush copolymer elastomers via homogeneous reversible addition-fragmentation chain transfer (RAFT) polymerization. In such kind of bottlebrush copolymers, chitin serves as the rigid backbone, while the plant oil-derived monomer 4-vinylbenzyl oleate (VBO) and lignin-derived monomer syringaldehyde acrylate (SA) were chosen as the soft and hard segments for the rubbery brushes, respectively. These chitin- graft -poly(4-vinylbenzyl oleate- co -syringaldehyde acrylate) (Chitin- g -P(VBO- co -SA)) bottlebrush elastomers possess tunable mechanical properties and superior UV-shielding performance. To further improve their macroscopic behavior, carbon dots (CDs) were incorporated into the Chitin- g -P(VBO- co -SA) copolymers. The resulting Chitin- g -P(VBO- co -SA)/CD composites exhibit significantly enhanced tensile strength and excellent photothermal conversion ability owing to the introduction of CDs. This robust and convenient strategy can inspire the continuous development of strong and functional sustainable elastomers by combining different natural resources.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Kai Lin,Ao Xia,Yu Yang,Yun Huang,Xianqing Zhu,Xun Zhu,Kaiyong Cai,Zidong Wei,Qiang Liao
Pretreatment is critical to promote enzymatic hydrolysis for the production of lignocellulose-based biofuels. In this study, inspired by the lignin degradation through the mouthpart and symbiotic fungi of termite, a synergistic biomass pretreatment system using ball milling and Fenton-like reactions was first proposed. Ball milling can reduce the particle size, while Fenton-like reactions can modify the lignin and cause pore structures, leading to a 44.2% increment in total pore volume. In addition, lignin-based aromatic aldehydes can be produced with a 67.1% increase in yield over no-ball milling conditions, which can be used as natural mediators. More importantly, under the optimal pretreatment conditions (1.5% H2O2, 1 mg L–1 Fe-TAML catalyst, 300 rpm, and 12 h), the highest initial glucose productivity was 2.83 g L–1 h–1, which is 2.4 times higher than untreated samples. The conversion of cellulose in 24 h is enhanced by 62.3% with half of the enzyme input when compared with untreated wheat straw. Thus, the synergy of ball milling and Fenton-like reactions helps to promote lignin depolymerization and enzymatic hydrolysis of lignocellulose.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Xiangyu Wang,Lifeng Li,Xinyi Xie,Xinping Ouyang,Xueqing Qiu,Qinzhen Fan,Lihua Cheng
The fractionation of lignocellulose is the key step for its efficient utilization. A mild fractionation process was proposed for producing glucan oligomers and high purity lignin using ZnBr 2 molten salt hydrate (ZnBr 2 -MSH). It was found that the cellulose could be hydrolyzed rapidly using ZnBr 2 -MSH with a slight amount of acid (ZnBr 2 -AMSH), giving as high as 88.0 % yield of glucan oligomers together with 92.4 % purity of lignin at 90 °C for 20 min. The long-time molecular dynamics simulation indicated that ZnBr 2 -MSH had more free Br ions to form hydrogen bonds (H-bonds) with H atom in hydroxyl and Zn ions with stronger coordination ability to O atoms in hydroxyl, and hence exhibited that stronger ability to destruct the H-bonds among cellulose bundles. Therefore, ZnBr 2 -MSH could deconstruct cellulose crystal under mild conditions. The lignin obtained by fractionation of ZnBr 2 -AMSH contained more polar functional groups, demonstrating its potential application in a binder for hard carbon (HC) anode in sodium-ion battery, and the resultant electrode contributed to good electrochemical performances and cycling stability. This research work provides a promising approach for efficient fractionation and application of the three components in lignocellulose.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Jun Liu,Xin Wang,Jinzhe Chang,Pengrui Du,Jian Wu,Ruiquan Hou,Shiqi Zhu,Pengpeng Liu,Xiaoran Miao,Peiwen Zhang,Zhixiang Zhang
Lignin, renowned for its renewable, biocompatible, and environmentally benign characteristics, holds immense potential as a sustainable feedstock for agrochemical formulations. In this study, raw dealkaline lignin (DAL) underwent a purification process involving two sequential solvent extractions . Subsequently, an enzyme-responsive nanodelivery system (Pyr@DAL-NPs), was fabricated through the solvent self-assembly method, with pyraclostrobin (Pyr) loaded into lignin nanoparticles . The Pyr@DAL-NPs shown an average particle size of 250.4 nm, demonstrating a remarkable loading capacity of up to 54.70 % and an encapsulation efficiency of 86.15 %. Notably, in the presence of cellulase and pectinase at a concentration of 2 mg/mL, the release of Pyr from the Pyr@DAL-NPs reached 92.66 % within 120 h. Furthermore, the photostability of Pyr@DAL-NPs was significantly improved, revealing a 2.92-fold enhancement compared to the commercially available fungicide suspension (Pyr SC). Bioassay results exhibited that the Pyr@DAL-NPs revealed superior fungicidal activity against Botrytis cinerea over Pyr SC, with an EC 50 value of 0.951 mg/L. Additionally, biosafety assessments indicated that the Pyr@DAL-NPs effectively declined the acute toxicity of Pyr towards zebrafish and posed no negative effects on the healthy growth of strawberry plants. In conclusion, this study presents a viable and promising strategy for developing environmentally friendly controlled-release systems for pesticides, offering the unique properties of lignin.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Peiwen Wang,Congjin Chen,Yingjie Li,Jinrou Wei,Zuqiang Huang
Lignin, as a by-product produced in the biological refining and papermaking processes, is often discarded or burned, resulting in environmental pollution and resource waste. Herein, a novel environmental-friendly ternary hybrid foams adsorbent (SLS/PEI/ZIF-8) was designed for effectively removal TC from aqueous solution. The adsorption properties of the adsorbent were systematically studied. The results show that the adsorption process for TC were fitted well by the pseudo-second-order kinetics model and the Langmuir isotherm model, respectively. The maximum Langmuir monolayer adsorption capacity of SLS/PEI/ZIF-8 for TC was calculated as 1098 mg/g at 30 °C, which was superior to most reported adsorbents. Thermodynamic analysis indicated the adsorption process for TC was spontaneous and endothermic. Moreover, the electrostatic interactions, hydrogen bonding interactions and π–π interactions were proposed as the possible adsorption mechanism. The adsorbent still maintained superior adsorption capacity for TC in ions solution, HA solution and actual water samples, and had good reusability. Therefore, it is a promising adsorbent for the removal of TC from wastewater.
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