Query:
学者姓名:刘明华
Refining:
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract :
Heterogeneous electro-Fenton (hetero-EF) system was one of the most promising approaches for treating antibiotic-laden wastewater. However, the rational design of cost-effective, eco-friendly, and efficient earthabundant electrocatalysts remains a significant challenge. This study synthesized a novel catalyst, lignin-based metal biochar (Co-L@C), from coniferous lignin via hydrothermal reaction and temperature-controlled pyrolysis. The results demonstrated that Co-L@C achieved nearly 100% oxytetracycline hydrochloride (OTC) removal within 30 min employing the hetero-EF system, consistently exhibiting efficient OTC degradation rates across a wide pH range (3-9) and in various practical water matrices. In conjunction with the burst test and electron paramagnetic resonance (EPR) analysis, singlet oxygen (1O2) was shown to play a dominant role in OTC degradation. At the same time, further investigation revealed that hydroxyl radicals (& sdot;OH), superoxide radicals (O2 & sdot;- ), and dissolved oxygen (DO) all contributed to 1O2 production. This work offers a potential technology for the effective degradation of antibiotic-contaminated wastewater.
Keyword :
Biochar Biochar Heterogeneous electro-Fenton Heterogeneous electro-Fenton Lignin Lignin Oxytetracycline hydrochloride Oxytetracycline hydrochloride Singlet oxygen Singlet oxygen
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zou, Niao , Guo, Hong , Zheng, Zhihong et al. Effective degradation of OTC by Co-L@C cathode in heterogeneous Electro-Fenton system: Preeminent role of singlet oxygen species [J]. | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION , 2025 , 193 : 1343-1353 . |
MLA | Zou, Niao et al. "Effective degradation of OTC by Co-L@C cathode in heterogeneous Electro-Fenton system: Preeminent role of singlet oxygen species" . | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 193 (2025) : 1343-1353 . |
APA | Zou, Niao , Guo, Hong , Zheng, Zhihong , Lv, Yuancai , Liu, Yifan , Chen, Zengpeng et al. Effective degradation of OTC by Co-L@C cathode in heterogeneous Electro-Fenton system: Preeminent role of singlet oxygen species . | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION , 2025 , 193 , 1343-1353 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
以生物大分子淀粉(ST)、海藻酸钠(SA)为骨架,采用溶液聚合法将丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)接枝到淀粉-海藻酸钠骨架上,合成耐盐型生物基保水剂.AMPS的加入为体系中引入磺酸基团,使产物的耐盐性提高.通过傅里叶变换红外光谱与 X-射线衍射分析得到生物基与单体成功接枝聚合.利用单因素实验优化工艺条件得出最佳制备方案.性能测试表明,该耐盐型生物基保水剂可重复使用且热稳定性良好,在质量分数为的 0.90%NaCl溶液、0.90%KCl溶液、0.90%NH4Cl溶液中吸液倍率分别为 118 g/g、117 g/g、117 g/g.该研究成功制备出一种成本低、生物可降解且在多种盐溶液中均展现较好的吸液能力的耐盐型生物基保水剂.
Keyword :
保水剂 保水剂 吸液倍率 吸液倍率 海藻酸钠 海藻酸钠 淀粉 淀粉
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 黄宇诗 , 陈慧君 , 叶晓霞 et al. 耐盐型淀粉-海藻酸钠二元生物基保水剂的制备与表征及性能研究 [J]. | 纤维素科学与技术 , 2025 , 33 (1) : 31-38 . |
MLA | 黄宇诗 et al. "耐盐型淀粉-海藻酸钠二元生物基保水剂的制备与表征及性能研究" . | 纤维素科学与技术 33 . 1 (2025) : 31-38 . |
APA | 黄宇诗 , 陈慧君 , 叶晓霞 , 刘以凡 , 刘明华 . 耐盐型淀粉-海藻酸钠二元生物基保水剂的制备与表征及性能研究 . | 纤维素科学与技术 , 2025 , 33 (1) , 31-38 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
China generates over 100 million tons of food waste annually, leading to significant environmental pollution and health risks if not managed properly. Converting FW into a high-value-added platform molecule, lactic acid (LA), through fermentation offers a promising approach for both waste treatment and resource recovery. This paper presents a comprehensive review of recent advancements in LA production from FW, focusing on pure strains fermentation and open fermentation technologies, metabolic mechanisms, and problems in fermentation. It also assesses purification methods, including molecular distillation, adsorption, membrane separation, precipitation, esterification and hydrolysis, solvent extraction, and in-situ separation, analyzing their efficiency, advantages, and disadvantages. However, current research encounters several challenges, including low LA yield, low optical purity of L-(+)-LA, and difficulties in the separation and purification of LA. The integration of in-situ separation technology coupled with multiple separation methods is highlighted as a promising direction for future advancements.
Keyword :
Bio-refining Bio-refining High-value-added High-value-added Lactobacillus Lactobacillus Resource recovery Resource recovery Waste management Waste management
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Song, Liang , Cai, Chenhang , Chen, Zengpeng et al. Lactic acid production from food waste: Advances in microbial fermentation and separation technologies [J]. | BIORESOURCE TECHNOLOGY , 2024 , 414 . |
MLA | Song, Liang et al. "Lactic acid production from food waste: Advances in microbial fermentation and separation technologies" . | BIORESOURCE TECHNOLOGY 414 (2024) . |
APA | Song, Liang , Cai, Chenhang , Chen, Zengpeng , Lin, Chunxiang , Lv, Yuancai , Ye, Xiaoxia et al. Lactic acid production from food waste: Advances in microbial fermentation and separation technologies . | BIORESOURCE TECHNOLOGY , 2024 , 414 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
The photoresponsive adsorption materials are of great significance to the light controlled release performance of pollutants and the development of green regeneration of adsorption materials. A photoresponsive cellulose based imprinted adsorbent(Cell-AB-MIP)was synthesized by surface-initiates atom transfer radical polymerization (SI-ATRP) using cellulose as raw material,azobenzene derivatives as functional monomers,and the typical pesticide residues 2,4-D as template. The synthetic conditions were optimized by single factor experiment ,and the structure and performance of the material was analyzed by some characterization methods. The results show that the surface of Cell-AB-MIP contains abundant functional groups(—COOH,N=N,etc.),which have a high specific recognition effect for 2,4-D. The introduction of azobenzene group makes Cell-AB-MIP have excellent photo-induced regeneration performance. The azobenzene group on Cell-AB-MIP surface changes from trans-configuration to cisconfiguration under UV irradiation,then changing the binding affinity of adsorbent for pollutants,thus realizing green regeneration via UV-light. The desorption efficiency can reach 72. 22% in methanol medium under UV light irradiation. After 5 times of cycle,the adsorption percentage to 2,4-D still remains 83. 47%. The analysis results of SEM and EA confirm that the adsorbed pollutants can be separated from the surface of the adsorbent after UV irradiation,completing the regeneration process. © 2024 Beijing Institute of Aeronautical Materials (BIAM). All rights reserved.
Keyword :
Adsorption Adsorption Atom transfer radical polymerization Atom transfer radical polymerization Azobenzene Azobenzene Binding energy Binding energy Cells Cells Cellulose Cellulose Cytology Cytology Irradiation Irradiation
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Wang, Luying , Qiu, Yueming , Zhang, Rui et al. Preparation and photo-regeneration properties of photo-responsive cellulose based imprinted adsorption materials [J]. | Journal of Materials Engineering , 2024 , 52 (2) : 180-189 . |
MLA | Wang, Luying et al. "Preparation and photo-regeneration properties of photo-responsive cellulose based imprinted adsorption materials" . | Journal of Materials Engineering 52 . 2 (2024) : 180-189 . |
APA | Wang, Luying , Qiu, Yueming , Zhang, Rui , Xu, Pingfan , Liu, Yifan , Lin, Chunxiang et al. Preparation and photo-regeneration properties of photo-responsive cellulose based imprinted adsorption materials . | Journal of Materials Engineering , 2024 , 52 (2) , 180-189 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
Eucommia ulmoides gum (EUG) with high purity was extracted directly from the Eucommia ulmoides pericarp using a biphasic solvent system consisting of deep eutectic solvent (DES) and petroleum ether. The addition of DES enabled the deconstruction of lignocellulose and the exposure of EUG, leading to the efficient dissolution of EUG in petroleum ether. The extraction rate of EUG was 22.986 %, and the purity of EUG was 98.01 %. The chemical structure of EUG was confirmed by FTIR and NMR characterization. XRD and DSC analysis reviewed the partial destruction of crystal structure and the decline of beta- crystal phase of EUG during the extraction process. Moreover, the extracted EUG exhibited high tensile strength of 10.360 MPa, excellent elongation at break of 78.663 % ascribed to the unique crystallinity that enhanced the flexibility of molecular chains. In addition, the recycling performance of DES and petroleum ether was verified, and the recovery rate were up to 94.04 % and 82.60 %, respectively, indicating that this method is expected to replace the traditional pretreatment method for extracting EUG.
Keyword :
Biphasic system Biphasic system Deep eutectic solvent Deep eutectic solvent Eucommia ulmoides gum Eucommia ulmoides gum Extraction Extraction
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zhou, Yicheng , Liu, Yifan , Lv, Yuancai et al. Efficient extraction of Eucommia ulmoides gum by a deep eutectic solvent-organic solvent biphasic recyclable system [J]. | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 283 . |
MLA | Zhou, Yicheng et al. "Efficient extraction of Eucommia ulmoides gum by a deep eutectic solvent-organic solvent biphasic recyclable system" . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 283 (2024) . |
APA | Zhou, Yicheng , Liu, Yifan , Lv, Yuancai , Ye, Xiaoxia , Song, Liang , Liu, Minghua et al. Efficient extraction of Eucommia ulmoides gum by a deep eutectic solvent-organic solvent biphasic recyclable system . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 283 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
Lignin is a sustainable biomass resource with abundant hydroxyl groups that holds great promise for use as a feedstock for polyurethane foam production. Therefore, the flexible polyurethane foams (FPUFs) were prepared using the oxidized alkali lignin (OAL) as the matrix to enhance its compatibility. The OAL was obtained under the following conditions of 60 degree celsius, 80 min treatment, a ratio of hydrogen peroxide to lignin of 1.2:1, and a ratio of iron hydroxide to lignin of 0.01. It was demonstrated that incorporating OAL enhanced the density, compressive strength, sound-absorbing performance and degradability of foam composites. The compressive strength was also improved by more than five times than that of blank foam under the optimal conditions, reaching 0.11 MPa. The thermogravimetric analysis (TGA) revealed that the foam composite containing 30 % modified lignin content exhibited the highest thermal stability. The results of solvent resistance testing demonstrated the durability of the foam composites in both water and solvents. Lignin-modified polyurethane foam exhibited an acoustic absorption coefficient above 0.2 across a wide frequency range, with the highest value reaching 0.84, meeting the conventional requirements for sound absorption materials (alpha > 0.2). The results suggested that this environmentally friendly preparation method was feasible for producing high-performance polyurethane foams, which was appropriate for the production of sound absorption boards for industry, transportation by train and automobile.
Keyword :
Flexible polyurethane foam Flexible polyurethane foam Modified lignin Modified lignin Polyether polyol Polyether polyol Sound-absorbing property Sound-absorbing property
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zhao, Xiaoxiao , Liu, Yifan , Lv, Yuancai et al. Research on lignin-modified flexible polyurethane foam and its application in sound absorption [J]. | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY , 2024 , 137 : 327-337 . |
MLA | Zhao, Xiaoxiao et al. "Research on lignin-modified flexible polyurethane foam and its application in sound absorption" . | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 137 (2024) : 327-337 . |
APA | Zhao, Xiaoxiao , Liu, Yifan , Lv, Yuancai , Liu, Minghua . Research on lignin-modified flexible polyurethane foam and its application in sound absorption . | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY , 2024 , 137 , 327-337 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
An annual production of about 500 million tons of household food waste (HFW) has been documented, resulting in significant implications for human health and the environment in the absence of appropriate treatment. The anaerobic fermentation of HFW in an open system offers the potential to recover high value-added products, lactic acid (LA), thereby simultaneously addressing waste treatment and enhancing resource recovery efficiency. Most of LA fermentation studies have been conducted under mesophilic and thermophilic conditions, with limited research on the production of LA through anaerobic fermentation under hyperthermophilic conditions. This study aimed to produce LA through anaerobic fermentation from HFW under hyperthermophilic conditions (70 +/- 1 degrees C), while varying pH values (5.0 +/- 0.1, 7.0 +/- 0.1, and 9.0 +/- 0.1), and compare the results with LA production under mesophilic (35 +/- 1 degrees C) and thermophilic (52 +/- 1 degrees C) conditions. The findings of this study indicated that the combination of hyperthermophilic conditions and a neutral pH (pH7_70) yielded the highest concentration of LA, measuring at 17.75 +/- 1.51 g/L. The mechanism underlying the high yield of LA at 70 degrees C was elucidated through the combined analysis of organics dissolution, enzymes activities, and 16S rRNA microbiome sequencing.
Keyword :
Anaerobic fermentation Anaerobic fermentation Household food waste Household food waste Hyperthermophilic condition Hyperthermophilic condition Lactic acid Lactic acid Lactobacillus Lactobacillus
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Song, Liang , Cai, Chenhang , Lin, Chunxiang et al. Enhanced lactic acid production from household food waste under hyperthermophilic conditions: Mechanisms and regulation [J]. | WASTE MANAGEMENT , 2024 , 178 : 57-65 . |
MLA | Song, Liang et al. "Enhanced lactic acid production from household food waste under hyperthermophilic conditions: Mechanisms and regulation" . | WASTE MANAGEMENT 178 (2024) : 57-65 . |
APA | Song, Liang , Cai, Chenhang , Lin, Chunxiang , Lv, Yuancai , Liu, Yifan , Ye, Xiaoxia et al. Enhanced lactic acid production from household food waste under hyperthermophilic conditions: Mechanisms and regulation . | WASTE MANAGEMENT , 2024 , 178 , 57-65 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
以纤维素为原料,在Na OH/尿素/H2O溶解体系中通过交联作用将橡椀单宁固化在纤维素基体上,制得固化橡椀单宁纤维素基气凝胶(VTCA).通过SEM-EDS、FT-IR、XRD等对VTCA进行表征,并研究其对水溶液中Ag(I)的吸附行为.结果表明,VTCA具有明显的三维网格多孔结构,孔隙率达到97.95%,在较宽的p H范围内(1~8)对Ag(I)均保持较高的吸附效率(>75%).吸附过程符合拟二级动力学模型和Langmuir吸附等温线模型,温度升高有利于吸附,最高理论吸附量为147.2mg/g.吸附还原研究机理表明,VTCA主要通过静电吸引和螯合作用将Ag(I)吸附到其表面,并通过单宁结构上的酚羟基将其原位还原为Ag0,证明VTCA具有良好的吸附还原性能,能够实现对水体中Ag(I)的回收.
Keyword :
Ag(I) Ag(I) 吸附 吸附 橡椀单宁 橡椀单宁 纤维素基气凝胶 纤维素基气凝胶 还原 还原
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 陈颖 , 林昱灵 , 吕源财 et al. 固化单宁纤维素基气凝胶吸附还原Ag(I)行为研究 [J]. | 中国环境科学 , 2024 , 44 (04) : 2083-2092 . |
MLA | 陈颖 et al. "固化单宁纤维素基气凝胶吸附还原Ag(I)行为研究" . | 中国环境科学 44 . 04 (2024) : 2083-2092 . |
APA | 陈颖 , 林昱灵 , 吕源财 , 刘以凡 , 林春香 , 叶晓霞 et al. 固化单宁纤维素基气凝胶吸附还原Ag(I)行为研究 . | 中国环境科学 , 2024 , 44 (04) , 2083-2092 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
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, 1O2 and SO4−·, 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. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.
Keyword :
Aluminum compounds Aluminum compounds Depolymerization Depolymerization Photocatalytic activity Photocatalytic activity Photodegradation Photodegradation
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Liu, Yifan , Xu, Zhuangqin , He, Yuting et al. Synergistic activation of persulfate by Fe-based perovskite photocatalysis for alkali lignin degradation in pulp and paper wastewater [J]. | Environmental Science and Pollution Research , 2024 , 31 (47) : 57822-57831 . |
MLA | Liu, Yifan et al. "Synergistic activation of persulfate by Fe-based perovskite photocatalysis for alkali lignin degradation in pulp and paper wastewater" . | Environmental Science and Pollution Research 31 . 47 (2024) : 57822-57831 . |
APA | Liu, Yifan , Xu, Zhuangqin , He, Yuting , Liu, Minghua , Lin, Chunxiang , Lv, Yuancai . Synergistic activation of persulfate by Fe-based perovskite photocatalysis for alkali lignin degradation in pulp and paper wastewater . | Environmental Science and Pollution Research , 2024 , 31 (47) , 57822-57831 . |
Export to | NoteExpress RIS BibTex |
Version :
Abstract :
The absorbent of Fe-loaded cellulose/bayberry tannin (Fe-CBT) was prepared via impregnation and in-situ reduction process, with cellulose/tannin composite aerogel (CBT) as the carrier, which then was characterized by means of scanning electron microscopy, Fourier infrared spectroscopy and Х-ray energy dispersive spectroscopy. Afterwards, the adsorption characteristic of the Fe-CBT was comparatively assessed for three typical fluoroquinolones (FQs) antibiotics, i.e., norfloxacin (NOR), lomefloxacin hydrochloride (LOM) and levofloxacin hydrochloride (LVХ). The results show that the coexistence of cations Na+, K+, Mg2+ and Ca2+ all interferes significantly with the adsorption process. Moreover, the adsorption process is an exothermic reaction that proceeds spontaneously, mainly as single-molecule layer adsorption, of which chemisorption is the main rate-limiting step. The quasi-secondary and Langmuir models are demonstrated to fit this adsorption behavior, and the maximum theoretical adsorption capacity of 99.07, 74.17 and 40.14 mg/g can be achieved for NOR, LOM and LVХ at 298 K, respectively. Both NaOH and NaCl show superior elution effect on Fe-CBT, namely, after re-generation for four times with NaOH and NaCl solutions, the adsorption capacity of Fe-CBT on NOR could even be maintained > 70%. In addition, it is found that the removal of FQs by Fe-CBT is caused by the synergy between electrostatic gravitation, surface complexation, hydrogen bonding and π-π stacking. © 2024 Chinese Journal of Materials Research. All rights reserved.
Keyword :
Adsorption Adsorption Aerogels Aerogels Antibiotics Antibiotics Cellulose Cellulose Energy dispersive spectroscopy Energy dispersive spectroscopy Flavonoids Flavonoids Hydrogen bonds Hydrogen bonds Infrared spectroscopy Infrared spectroscopy Scanning electron microscopy Scanning electron microscopy Sodium chloride Sodium chloride Sodium hydroxide Sodium hydroxide Tannins Tannins
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Weng, Xin , Li, Qiqi , Yang, Guifang et al. Preparation of Adsorbent Fe-loaded Cellulose/Tannin and Its Adsorption Characteristics for Fluoroquinolones Antibiotics [J]. | Chinese Journal of Materials Research , 2024 , 38 (2) : 92-104 . |
MLA | Weng, Xin et al. "Preparation of Adsorbent Fe-loaded Cellulose/Tannin and Its Adsorption Characteristics for Fluoroquinolones Antibiotics" . | Chinese Journal of Materials Research 38 . 2 (2024) : 92-104 . |
APA | Weng, Xin , Li, Qiqi , Yang, Guifang , Lv, Yuancai , Liu, Yifan , Liu, Minghua . Preparation of Adsorbent Fe-loaded Cellulose/Tannin and Its Adsorption Characteristics for Fluoroquinolones Antibiotics . | Chinese Journal of Materials Research , 2024 , 38 (2) , 92-104 . |
Export to | NoteExpress RIS BibTex |
Version :
Export
Results: |
Selected to |
Format: |