Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xingyu Shao,Wei Feng,Wenqian Wu,Zichao Guo,Wanghua Chen
Dimethyl sulfoxide (DMSO), a key solvent for Octogen (HMX) recrystallization, faces challenges in safe recovery and cyclic use due to thermal instability. This study has developed a Wiped Film Evaporator/Distillation coupled (WFE) technology to achieve efficient DMSO recovery from HMX-contaminated solutions. Compared to the conventional vacuum distillation, this technique could significantly increase the effective recycle time of DMSO. Optimal parameters (115°C jacket temperature, 0.005 MPa operational pressure, 6 mL/min feeding speed) were determined via Response Surface Methodology (RSM), yielding > 95.5 wt% DMSO purity with < 0.03 wt% decomposition. The method enabled at least 21 reuse cycles without compromising HMX recrystallization quality ( β -crystal structure confirmed by X-ray powder diffraction (XRD), defect-free morphology via Scanning Electron Microscopy (SEM)). The safety of the recovery process can be achieved through lower jacket temperatures. Thermal analysis (Accelerating Rate Calorimeter (ARC)/ Gas Chromatography Mass Spectrometry (GC-MS)) validated that no significant decomposition of DMSO and HMX was present at the jacket temperature of 115°C. This improvement is attributed to the lower pressure drop and higher heat transfer efficiency of the wiped film evaporator relative to conventional reboiler. This work provides a sustainable strategy for solvent recycling in energetic material industries, balancing efficiency, safety, and cost-effectiveness.
研究领域:
化学工程
·
绿色化学
·
溶剂回收技术
·
含能材料工业
·
可持续工艺
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Litao Hao,Yangchun Han,Shixi Zhang,Yingjie Luo,Kunli Luo
Trace elements in crops can affect the bioavailability of Se. To investigate the effect of trace element on Se bioavailability, trace element concentrations and Se bioavailability in crops from Se-rich area (Langao County, China) were analyzed using the physiologically-based extraction test (PBET) digestion model. Vegetables (rapes, radishes, and potatoes) had higher concentrations of total and bioavailable Se compared to grains (corn, rice, and sweet potatoes), suggesting they are more effective for Se supplementation. The bioavailability of Se was higher in the intestinal phase than in the gastric phase. Trace elements were positively correlated with the increased bioavailability of Se in corn, potato, and rape. Fe was a key element in increased bioavailability of Se in the gut model. Therefore, trace elements, particularly Fe, in crop can enhance Se bioavailability, suggesting their potential use in Se supplementation. The findings of this study provide valuable insights for dietary interventions to Se deficiencies.
研究领域:
营养学
·
植物学
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 14
·7574
·
IF 6.208
Weizeng Lv,Xue He,Haojuan Guo,Haibin Lan,Yanqing Jiao,Le Li,Yanhao Lian,Zhiqiang Wang,Zeyu Xin,Yongzhe Ren,Tongbao Lin
Excessive input of nitrogen fertilizer not only causes a great waste of resources but brings about a series of ecological and environmental problems. AlthoughSmall Auxin Up-regulatedRNAs(SAURs) participate in diverse biological processes, the function ofSAURsin the nitrogen starvation response has not been well-studied. Here, we identified 308TaSAURs in wheat and divided them into 10 subfamilies. The promoter regions of mostTaSAURscontain hormone responsive elements, and their expression levels change under the treatment of different hormones, such as IAA, MeJA, and ABA. Interestingly, overexpression of one of theTaSAURfamily members, a nitrogen starvation responsive gene,TaSAUR66-5B, can promote the growth ofArabidopsisand wheat roots. In addition, overexpression ofTaSAUR66-5BinArabidopsisup-regulates the expression levels of auxin biosynthesis related genes, suggesting that overexpressionTaSAUR66-5Bmay promote root growth by increasing the biosynthesis of auxin. Furthermore, overexpression ofTaSAUR66-5Bin wheat can increase the biomass and grain yields of transgenic plants, as well as the nitrogen concentration and accumulation of both shoots and grains, especially under low nitrogen conditions. This study provides important genomic information of theTaSAURgene family and lays a foundation for elucidating the functions ofTaSAURsin improving nitrogen utilization efficiency in wheat.Keywords:TaSAURgene family;TaSAUR66-5B;root;nitrogen utilization efficiency
研究领域:
植物学
·
遗传学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
Materials
·
2020
·Vol. 13
·期 17
·3871
·
IF 3.057
Bingbing Wan,Wenfang Li,Wanting Sun,Fangfang Liu,Bin Chen,Shiyao Xu,Weiping Chen,Aihua Yi
Secondary aluminum dross (SAD) is regarded as a solid waste of aluminum recycling process that creates serious environmental and health concerns. However, SAD can also be used as a good source of aluminum, so that utilizing the SAD for the production of valuable products is a promising approach of recycling such waste. In the present work, a novel eco-friendly three-step process was proposed for the synthesis of cryolite (Na3AlF6) from the SAD, and it consisted of (1) water-washing pretreatment of SAD, (2) extraction of Al component via pyro-hydrometallurgy, including low-temperature alkaline smelting, water leaching and purification of leachate in sequence, (3) precipitation of cryolite from the purified NaAlO2solution using the carbonation method. By analysis of the parameter optimization for each procedure, it was found that the maximum hydrolysis efficiency of aluminum nitride (AlN) in the SAD was around 68.3% accompanied with an extraction efficiency of Al reaching 91.5%. On this basis, the cryolite of high quality was synthesized under the following optimal carbonation conditions: reaction temperature of 75 °C, NaAlO2concentration of 0.11 mol/L, F/(6Al) molar ratio of 1.10, and 99.99% CO2gas pressure, and flow rate of 0.2 MPa and 0.5 L/min respectively. The formation of Na3AlF6phase can be detected by XRD. The morphological feature observed by SEM revealed that the as-synthesized cryolite had a polyhedral shape (~1 μm size) with obvious agglomeration. The chemical composition and ignition loss of the as-synthesized cryolite complied well with the requirements of the Chinese national standard (GB/T 4291-2017).
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Drug Delivery and Translational Research
·
2024
·
IF 5.7
Wang Yueli,Li Dongbo,Li Xiaojuan,Ren Dandan,Zhang Wei,Shu Gang,Lin Juchun,Li Haohuan,Xu Funeng,Peng Guangneng,Fu Hualin
Metamizole easily decomposes in the body and has a short action time and low bioavailability. Hence, frequent injection administrations are needed to maintain its plasma concentration. This study aimed to design and develop an in-situ gel based on poloxamer 407 and 188 to assess its long-acting antipyretic effects. The in-situ gel-forming systep00m with optimum sol–gel transition temperature of 35.9 °C to 36.3 °C could be formed using a combination of P407 at a ratio of 21–23% (w/v) and P188 at a ratio of 2–4% (w/v). In vitro erosion test showed that the in-situ gel’s erosion curve and the metamizole release rate both reached about 90% at 6 h, revealing a good linear relationship between the in-situ gel erosion and the drug release. In vitro release test with dialysis tube showed that the release of metamizole from the in-situ gel was remarkably slower than that from the metamizole solution. Approximately 85% of metamizole was released in the dialysis tube within 7 h, implying a good sustained release effect. Pharmacodynamic study showed that the in-situ gel injection extended the action time of metamizole relative to that when using the metamizole solution. Pharmacokinetic study revealed that the in-situ gel significantly increased the blood serum half-life and area under the curve), contributing to a sustained release and improved bioavailability. This study demonstrated that in-situ gel injection could prolong the action of metamizole in the body to reduce the number of administration times and has good clinical application. Graphical Abstract
研究领域:
药剂学
·
药物传递系统
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Guisheng Zeng,Chongwen Hu,Rui Zhou,Juyong Wang,Xianfu Liu,Jianwen Huang,Jiaping Yu,Guanghui Wu,Zhongbing Wang,Chunjian Deng,Junwei He,Chunli Liu,Xubiao Luo
With the impending increase in the number of retired lithium-ion batteries, effective recycling and upcycling strategies must be explored to alleviate resource shortages, address environmental pollution, and meet the growing demand for high-performance cathode materials. This study proposes a closed-loop upcycling strategy that utilizes current collector aluminum (Al) as both a dopant and raw material for surface coating. This approach repairs the structural defects of highly degraded LiCoO 2 (LCO) cathode materials and achieves bulk Al doping and surface LiAlO 2 coating, transforming them into high-performance cathode materials capable of stable operation at a high voltage of 4.5 V. Specifically, bulk Al doping suppresses irreversible phase transitions and enhances structural stability, while the LiAlO 2 coating improves interfacial charge transfer and mitigates polarization. The synergistic effects of these modifications collectively enhance the electrochemical stability of LCO. The upcycled material delivers an initial discharge capacity exceeding 181.5 mAh g -1 and retains 93.9% of its capacity after 200 cycles at 1 C. Even under a high current rate of 10 C, the discharge capacity remains above 150.1 mAh g -1 , thereby outperforming commercial LCO cathodes. This study provides a simple and efficient solution for the direct upcycling of degraded LCO cathode materials into high-performance alternatives.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xulong Chen,Wenping Hu
Resource scarcity and environmental degradation pose formidable challenges for the sustainable development of human society. Although enhancing resource utilization efficiency represents a viable solution to these challenges, many strategic resources still suffer from substantial waste and environmental pollution owing to their single utilization form and non-environmentally friendly technologies. In this study, by employing salt lake carnallite as a representative example, we proposed an eco-friendly closed-loop strategy that integrated various chemical processes to maximize resource utilization. This innovation enables successive recycling and utilization of the waste brine generated at each chemical stage, resulting in minimized resource wastage and maximized eco-environmental benefits. Compared with the conventional carnallite utilization method, our strategy enhanced the KCl yield from 55.48% to 89.25%, achieved nearly 100% utilization efficiency of Mg, and improved the Rb recovery efficiency from 0% to 81.28%. Consequently, the overall utilization efficiency of carnallite increased from 20.91% to 87.37%. Additionally, this approach offers the added benefit of significantly improving the overall utilization of mineral resources and substantially reducing the cost of large-scale sample preparation. This work helps to construct a more sustainable and cost-effective utilization system for various mineral and brine resources.
研究领域:
化学工程
·
环境科学
·
矿业工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2024
·
IF 5.3
Aihua Xiang,Yifan Li,Kun Liu,Xin Wang,Tuanliu Hu
Selenium (Se) is a beneficial plant micronutrient, and the application of Se fertilizers can promote plant growth and enhance the Se content in crops. However, traditional soluble Se fertilizers have low utilization efficiency of Se due to adsorption or leaching. Here, selenite (SeO 3 2− ) -intercalated Mg/Al layered double hydroxide (Se-Mg/Al) for SeO 3 2− slow-release was synthesized by co-precipitation and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). Se-Mg/Al possessed a typical lamellar structure, combining with selenite by electrostatic interaction in interlayer and chemisorption on the surface. The release mechanism of selenite in distilled water from Mg/Al layered double hydroxide (Mg/Al LDH) was Fickian diffusion with gradually released 97.86% after 20 h (Over 90% within 2 h for sodium selenite). At pH range 4.0–8.0, Se-Mg/Al had a stable slow-release ability. And, the sulfate and phosphate anions could effectively trigger the release of selenite through anions exchange. The pot experiments showed that Se-Mg/Al increased Se content of vegetables, more than twice that of directly using sodium selenite. Compared with control treatment, the average stem height and fresh weight per 10 plants with Se-Mg/Al treatment improved approximately 1.48 times and 2.34 times, respectively. This work provides a feasible way for achieving crops selenium supplementation and improving selenium utilization efficiency.
研究领域:
农业科学
·
植物营养学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yonglin Li,Shengmin Zhou,Jie Qiang,Yongsheng Cao,Guoyi Qu,Yuan Gao,Qi Li,Xiuzhu Yu
Butyrospermol, a minor yet important compound in camellia oil, has anti-inflammatory effects. However, its absorption, elimination, and the influence of oil on its bioavailability remain unclear. This study investigated the logP, stability in simulated digestive fluids and liver tissue, absorption parameters of different forms of butyrospermol, and binding of butyrospermol to the Niemann–Pick C1-like 1-N-terminal domain (NPC1L1-NTD). Results indicated that butyrospermol remained stable in the simulated gastric and intestinal fluids but underwent degradation in rat liver tissue. The bioavailability of the butyrospermol suspension was low owing to its poor water solubility. Unexpectedly, the bioavailability of butyrospermol in oil was also low. This was due to incomplete emulsification and the inhibitory effects of other triterpene alcohols in the oil, which prevented butyrospermol from binding to NPC1L1-NTD. Our study provides theoretical insights into the functional application of butyrospermol and calls for further investigations into its bioactivity and that of camellia oil.
研究领域:
食品科学
·
药理学
·
消化生理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Chen Li,Chuncai Zhou,Ye Quan,Shihai Xu,Zixuan Wang,Zhiguo Li,Xin Li,Guijian Liu,Jin Wang
Adsorption of gallium (Ga) utilizing solid waste synthetic materials can achieve both high-value solid waste use and solve the supply–demand paradox of Ga. To efficiently recover Ga in solution, this article describes a hydrothermal synthesis technique of mesoporous materials from the acid leaching residue of coal fly ash (CFA). According to the findings, the mesoporous silica synthesized by hydrothermal reaction with CTAB: nSiO 3 2- =1:0.085 around 120℃ during 24 h exhibits a maximum specific surface area (771.25 m 2 /g) along with hexagonal mesoporous structure. Pseudo-second-order kinetic model that has an excellent correlation coefficient (R 2 > 0.99) can explain this adsorption system. Since Freundlich model fits this adsorption action better, the process is multi-molecular layer adsorption. The thermodynamic fitting results show that the adsorption of Ga by mesoporous silica is an endothermic and spontaneous chaotic reaction. The adsorption mechanism could be depicted using ion exchange and coupling. The adsorption efficiency of Ga is still higher than 80 % after the material has been regenerated by multiple resolution. In conclusion, mesoporous silica prepared by CFA acid leaching residue has the potential to adsorb Ga.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2017
·Vol. 9
·期 5
·326
·
IF 1.832
Ting Zhang,Jian He,Xingzhang Luo
Due to the fact that not all eutrophic lakes have cyanobacteria blooms, we hypothesized Fe may be another important limiting factor which regulates cyanobacteria bloom formation. We tested the hypothesis by batch cultures of bloom-forming Cyanobacterium,Microcystis aeruginosawith different ethylenediaminetetraacetic acid (EDTA)-Fe concentrations (0.5–6.0 mg/L), three levels of initial biomass, and excessive N and P (N = 4.2 mg/L, P = 0.186 mg/L) to simulate dynamically a cyanobacteria bloom in eutrophic conditions. The effect of EDTA and Fe uptake kinetics byM. aeruginosawere also examined. Results showedM. aeruginosagrowth rate positively correlated with EDTA-Fe concentration and negatively correlated with biomass. Maximal biomass ofM. aeruginosawas determined by Fe availability and initial biomass. EDTA could decrease both Fe availability and toxicity. Based on experimental results, a conceptual model of how Fe availability regulates cyanobacterial biomass in eutrophic lakes was developed. This study demonstrated bioavailable Fe is a potential limiting factor in eutrophic lakes that should be included in eutrophication management strategies.Keywords:Microcystis;eutrophication control;freshwater;Fe availability
研究领域:
环境科学
·
生态学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yongze Li,Yazhou Tang,Yuchen Yang,Wenxiang Zhou,Chujie Qi,Kai Zhou,Bo Bian
Existing cyanobacteria thickening and dewatering processes in Taihu Lake commonly use conventional inorganic flocculants to condition the cyanobacteria, which poses certain environmental risks. In this study, three different types of typical flocculants, namely polymerized aluminum chloride (PAC), cationic polyacrylamide (CPAM) and starch-based flocculant (St-CTA), were selected to investigate their flocculant effects on cyanobacteria and the mechanism of action. The analysis showed that the dosage of St-CTA was low, the flocculation efficiency was high, and it could form flocs with large particle size and high strength. The adsorption and precipitation effect of St-CTA on protein and polysaccharide in flocculated EPS was stronger than that of CPAM and PAC, and it was able to act on the protein structure of EPS favorable for flocculation, improve the hydrophilic effect of S-EPS and LB-EPS, and reduce the content of bound water in EPS from 2.08 to 1.22 g/g DS, thus improving the efficiency of algae-water separation. The free energy and energy barrier of the EPS surface in each layer of the cyanobacterial floc after flocculation by St-CTA were significantly reduced, which resulted in the tendency of the cyanobacterial particles to aggregate and thus flocculate and settle. The pilot validation of St-CTA for cyanobacteria dewatering showed that the water content of algal residue could be reduced to 93.48 %, and the removal efficiencies of total nitrogen (TN), total phosphorus (TP), ammoniacal nitrogen (NH 3 -N), and chemical oxygen demand (COD) in the air-floated water could be up to 27.3 %, 76.6 %, 27.4 %, and 56.4 %, respectively. In conclusion, this study provides scientific knowledge and demonstration for promoting the use of St-CTA to condition cyanobacterial thickening and dewatering, which is a new idea to solve the problem of cyanobacterial resourcefulness and safe utilization.
研究领域:
环境科学
·
生物学
✓ 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）