JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yangfan Zhou,Ziyi Hu,Yuhui Huang,Yongjun Wu,Zijian Hong
Solution wash is a key procedure in the recycling of cathode materials for lithium-ion batteries. It is well-known that Ni-rich ternary cathode material LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM-811) is sensitive to water, triggering the Li + /H + exchange and increasing the cation disorder, which ultimately leads to a large capacity loss during the battery cycling. In this study, we investigated the structural/surface chemical stability as well as the capacity loss for NCM-811 ternary cathodes after washing in five different environmentally friendly and commercially available solutions (i.e., ethanol, methanol, sodium chloride aqueous solution, sodium hydroxide aqueous solution, and deionized water). It is discovered that the capacity decay rate during cycling is closely related to the Li + ion loss after solution wash, the more the Li + ion loss, the quicker the capacity decay during cycling. Among all the solution-washed samples, ethanol-washed samples show minimal Li + ion loss and the best capacity retention. Where the Li + ion loss is only 2%, and the specific capacity after 200 cycles is 2.6 times higher as compared to the water-washed counterparts. This study paves the way towards the practical applications of ethanol in the commercial recycling of NCM-based cathodes.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
Foods
·
2022
·Vol. 11
·期 7
·903
·
IF 5.561
Mei-Hui Pian,Lu Dong,Zhen-Ting Yu,Fan Wei,Chun-Yang Li,Dan-Cai Fan,Shi-Jie Li,Yan Zhang,Shuo Wang
This study aimed to compare ozone-microbubble-washing (OM) performed by domestic equipment with conventional water-washing (CW) regarding resultant quality attributes of muscle foods. For this purpose, muscle microstructure and lipid and protein oxidation were evaluated in pork and fish samples after OM and CW treatments. The assessment of muscle microstructure showed that OM treatment did not damage the microstructure of muscle fibers in both pork and fish samples. Thiobarbituric acid reactive substances (TBARS) values were not detected in both treatment groups, and they were substantially below the generally acceptable threshold (1 mg MDA/kg). The methylglyoxal (MGO) level of OM-treated fish samples was significantly higher than that of CW-treated fish samples. However, glyoxal (GO) and MGO levels of OM-treated pork samples were significantly lower than that of CW-treated pork samples. Similar types and sites of oxidative modification and similar numbers of modified peptides, as well as no significant difference in the concentration of total and most of the free amino acids (FAA) between treatment groups, indicated that OM treatment did not accelerate protein oxidation.Keywords:ozone-microbubbles-washing;ozone;domestic ozone equipment;washing treatment;pork;fish;oxidation
研究领域:
食品科学
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肌肉生物学
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氧化应激
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产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2024
·
IF 3.7
Xuan Yan,Yucheng Liu,Zhengmeng Hou,Lina Yuan,Jun Yang,Wenxin Dong
The chemical cleaning method is the simplest approach for degreasing oil-based drilling cuttings (ODCs), with the effectiveness of the treatment relying mainly on the selection of the surfactant and the cleaning conditions. However, achieving the standard treatment of ODCs directly using conventional surfactants proves challenging. In light of this, this study introduces a synthesized and purified Gemini surfactant named DCY-1. The structure of DCY-1 was confirmed through Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) analyses. The characterization in this article encompasses the use of an interface tension meter, nanoparticle size analysis, scanning electron microscopy, and infrared oil measurement. The critical micelle concentration (CMC) of DCY-1 was determined to be 3.37 × 10–3 mol/L, with a corresponding γcmc value of 37.97 mN/m. In comparison to conventional surfactants, DCY-1 exhibited a larger micelle size of 4.52 nm, approximately 24.52% larger than that of SDS. Moreover, the residual oil rate of 3.96% achieved by DCY-1 was the lowest among the chemical cleaning experimental results. Through a single-factor experiment, the optimal cleaning ability of DCY-1 for ODCs was determined as follows: a surfactant concentration of 3 mmol/L, a temperature of 60 °C, an ODC/liquid mass ratio of 1:4, a cleaning duration of 40 min, and a stirring speed of 1000 rad/min. Under these optimal conditions and after merely two cleaning procedures, the residual oil content of ODCs was reduced to 1.64%, accompanied by a smooth and loose surface structure.
研究领域:
环境科学
·
化工工程
·
表面活性剂技术
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产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2022
·
IF 11.211
Songchen Xie,Ngie Hing Wong,Jaka Sunarso,Qiang Guo,Chunguang Hou,Zhiguang Pang,Yuelian Peng
Mineral scaling is one of the major challenges for membrane distillation in concentrating high-salinity brine. This work first investigated the characteristic of CaSO 4 scaling, then explored different cleaning reagents to evaluate their efficiencies and mechanisms. By analyzing the SEM and EDX mapping images, the CaSO 4 scaling process could be divided into surface and pore scaling stages. Three cleaning solutions, i.e., commercial detergent (20 %), EDTA-4Na (0.05 M), and MgCl 2 (0.8 M), were chosen for their high CaSO 4 solubility (0.7 g CaSO 4 per 100 g H 2 O). At the surface scaling stage, three cleaning solutions exhibited excellent removal of CaSO 4 scaling with approximately similar 96 % cleaning efficiencies. However, at the pore scaling stage, only the commercial detergent showed high efficiency (89 %). Such high cleaning efficiency was mainly attributed to the detergent's high total dissolved solids (salinity), low pH, and high diffusion rate (5.46 μm cm −1 min −1 ) across the membrane. Moreover, periodic cleaning at the surface scaling stage with the commercial detergent followed by drying throughout a 43.5 h continuous concentration test on an actual RO brine could restore the PTFE membrane performance completely, giving 90 % of the total water recovery . This work provides new insights into the cleaning mechanism for gypsum scaling in a hydrophobic porous membrane.
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
Arabian Journal of Chemistry
·
2020
·
IF 4.762
Shuailong Cheng,Qintie Lin,Yupeng Wang,Haoyu Luo,Zhuofan Huang,Hengyi Fu,Hengrui Chen,Rongbo Xiao
In order to improve the heavy metal removal ability of traditional single washing agents and explore the removal mechanism of heavy metals. Then, the washing reagents that mixed by low-molecular weight organic acids (citric acid, oxalic acid, and tartaric acid) and artificial chelating compound ethylenediaminetetraacetic acid disodium (EDTA) were selected. Furthermore, the effect of soil washing parameters, the variation of leaching toxicity, mobility, stability and speciation of heavy metals were also considered. The results of soil washing experiments showed that mixing an equal volume of 0.05 M EDTA and 0.2 M organic acids (citric acid, oxalic acid, and tartaric acid) could remove more than about 80% heavy metals from soil under the optimal conditions. In addition, the soil leaching toxicity was decreased and the stability of remaining heavy metals was increased, indicating that EDTA-organic acid washing reagents could effectively reduce the ecological risk of contaminated soil. EDTA had a stronger chelating ability with heavy metals than the organic acids, and the organic acids could not only chelate heavy metals but also decrease the pH of the mixture for promoting the desorption of heavy metals. Thus, mixing EDTA and organic acids was advisable method to improve soil washing technology.
研究领域:
环境科学
·
土壤修复
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产品关联
DOI
高影响因子
Nanoscale Advances
·
2021
·Vol. 3
·期 9
·2475-2480
·
IF 4.553
Zhihui Tian,Heshan Zhang,Fei Xiu,Minjie Zhang,Jiahao Zou,Chaoyi Ban,Yijie Nie,Wenjie Jiang,Bin Hu,Juqing Liu
Electronic textiles (e-textiles) typically comprise fabric substrates with electronic components capable of heating, sensing, lighting and data storage. In this work, we rationally designed and fabricated anisotropic light/thermal emitting e-textiles with great mechanical stability based on a sandwich-structured tri-electrode device. By coating silver nanowire network/thermal insulation bilayer on fabrics, an anisotropic thermal emitter can be realized for smart heat management. By further covering the emissive film and the top electrode on the bilayer, light emitters with desirable patterns and colors are extracted from the top surface via an alternative current derived electroluminescence. Both the light and thermal emitting functions can be operated simultaneously or separately. Particularly, our textiles exhibit reliable heating and lighting performance in water, revealing excellent waterproof feature and washing stability.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Zhaohui Zhang,Yun Liu,Bin Zhao,Junjing Li,Liang Wang,Cong Ma
In this study, the reductions of long-term irreversible membrane fouling in integrated and separated MIEX-UF processes were explored over a prolonged experimental period. The mechanism leading to the significant difference in membrane fouling behaviors of the two processes was systematically analyzed. The results show that the chemical cleaning frequency and the rate of chemically irreversible membrane fouling formation were decreased by 50% and 49%, respectively, in the integrated process compared to the separated process. Further analysis suggested that MIEX adsorption was unrelated to the different membrane fouling behaviors between the two processes. The effect of the resin layer on filtration and backwashing was the dominate mechanism leading to the more excellent anti-fouling performance of the integrated process. The stronger adhesion force of pollutants-MIEX enable the mixed cake layer formed in the integrated process to maintain good water permeability and easy to be removed by backwashing. The adhesion force of pollutants-MIEX was significantly affected by the saturation level of resin particles and less affected by resin regeneration. During the early period of long-term filtration experiment and the initial stage after every resin replacement, the low saturation degree of resin particles guaranteed the improved effect of the resin layer always existed.
研究领域:
环境科学
·
水处理工程
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2014
·Vol. 22
·期 7
·5563-5571
·
IF 2.757
Li Yu-jiao,Hu Peng-jie,Zhao Jie,Dong Chang-xun
Composite washing of cadmium (Cd)- and lead (Pb)-contaminated agricultural soil from Hunan province in China using mixtures of chlorides (FeCl 3 , CaCl 2 ) and citric acid (CA) was investigated. The concentrations of composite washing agents for metal removal were optimized. Sequential extraction was conducted to study the changes in metal fractions after soil washing. The removal of two metals at optimum concentration was reached. Using FeCl 3 mixed with CA, 44 % of Cd and 23 % of Pb were removed, and 49 and 32 % by CaCl 2 mixed with CA, respectively. The mechanism of composite washing was postulated. A mixture of chlorides and CA enhanced metal extraction from soil through the formation of metal–chloride and metal–citrate complexes. CA in extract solutions promoted the formation of metal–chloride complexes and reduced the solution pH. Composite washing reduced Cd and Pb in Fe–Mn oxide forms significantly. Chlorides and CA exerted a synergistic effect on metal extraction during composite washing.
研究领域:
环境科学
·
土壤修复
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Environmental Research and Public Health
·
2022
·Vol. 19
·期 18
·11518
·
IF 4.614
Wenyang Wang,Xiyuan Wang,Hao Zhang,Qingdong Shi,Huapeng Liu
In soil, polycyclic aromatic hydrocarbons (PAHs) are tightly bound to organic components, but surfactants can effectively transform them from a solid to a liquid phase. In this study, the biosurfactant rhamnolipid (RL) was selected as the eluent; shaking elution in a thermostatic oscillator improved the elution rate of pyrene, and the effects of RL concentration, temperature, and elution time on the elution effect were compared. After four repeated washings, the maximum elution rate was 75.6% at a rhamnolipid concentration of 20 g/L and a temperature of 45 °C. We found that 38 μm Zero-Valent Iron (ZVI) had a higher primary reaction rate (0.042 h−1), with a degradation rate of 94.5% when 3 g/L ZVI was added to 21 mM Na2S2O8at 60 °C. Finally, electron paramagnetic resonance (EPR) detected DMPO-OH and DMPO-SO4signals, which played a major role in the degradation of pyrene. Overall, these results show that the combination of rhamnolipid elution and persulfate oxidation system effectively remediated pyrene-contaminated soil and provides some implications for the combined remediation with biosurfactants and chemical oxidation.Keywords:soil washing;persulfate;ZVI;rhamnolipid;pyrene
研究领域:
环境科学
·
生物修复
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yunhao Pan,Tiancheng Zha,Yanan Zhu,Yibo Zhang,Xunming Tian,Aiwen Wang,Rui Wang,Dongmei Liu,Wei Wang,Shouzhu Li
Wastewater treatment for oil–water emulsions is a critical challenge in the environmental and energy sectors. The oil–water separation based on super-wettability membrane has received widespread attention. However, traditional membranes struggle with severe irreversible fouling due to interactions between emulsified oil and hydrophilic organic compounds in practical wastewater, problematizing continuous separation. Here, a non-synthetic polymer membrane with easy-washability after fouling is reported, which shows full recovery of original separation efficiency. The membrane is composed of cellulose blended with sepiolite, which encapsulates and infiltrates the silica nanofiber membrane through silanol condensation and capillary action, then forms a “tight top, bottom, and inside” flexible fusion structure in one step. The dynamic water absorption capability of sepiolite and cellulose can create an enhanced hydration layer on the dense membrane surface, this allows the membrane to maintain structural integrity and stable separation efficiency even in oil emulsion wastewater containing hydrophilic organic compounds. Also, the membrane may undergo assimilative healing by interacting with pollutants to form part of the membrane structure. So, it shows great performances for extended separation, withstanding oil intrusion pressures over 600 kPa, and nearly 100 % removal for oil emulsions. This promising material offers a universal modification strategy with broad wastewater treatment applications.
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
Journal of Materials Research and Technology-JMR&T
·
2021
·
IF 5.039
Haipei Zhang,Bo Li,Yonggang Wei,Hua Wang
Settling time, system temperature and reductant amount play an important role in the recovery of matte from copper slag. This study investigated the settling behavior of matte particles in copper slag and the effects of the settling time, system temperature, and reductant amount on the macrostructure of slag, microstructure of matte particles, and copper loss. The results showed that the settling behavior of matte particles in slag at the experimental temperature was a process of aggregation and growth. With an increase in settling time and temperature, as well as the addition of an appropriate amount of anthracite, the foaming slag layer of the slowly cooled slag gradually disappeared, while the recovery of matte increased. However, when the amount of anthracite was too high, Fe–Cu alloy formed at the experimental temperature, which resulted in worsened fluidity of the matte in the molten slag and copper loss increased. At the experimental temperature, the settling environment of matte particles in the liquid phase layer was superior to that of the foaming slag layer. The novel idea of using rubber seed oil instead of a traditional fossil reductant to clean the copper slag was put forward. At the temperature of 1250 °C, 4 mL of rubber seed oil was injected, resulting in a settling time of ≥90 min, after which the copper content in the upper part of the slowly cooled slag was less than 0.57 wt.%, reaching the acceptable level of discardable slag in industry.
研究领域:
冶金学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2023
·
IF 4.5
Kun WANG,Yan LIU,Jun HAO,Zhi-he DOU,Guo-zhi LV,Ting-an ZHANG
To recover copper from copper slag, a novel slag cleaning method was proposed. The thermodynamics and binary phase diagram of FeO–SiO 2 were calculated first. Then, the effects of experimental parameters on the reduction of Fe 3 O 4 , recovery of copper, and slag cleaning mechanism were investigated. The results showed that the addition of SiO 2 significantly reduced the initial reduction temperature of magnetite and pyrite. The contents of Fe 3 O 4 and copper decreased to 2.45 wt.% and 0.39 wt.%, respectively, with copper recovery of 92.52% under the optimum conditions. More than 94% silver and 99% gold subsided into the copper matte after slag cleaning. Approximately 72% of zinc and 75% of lead volatilized in the flue gas. The viscosity of the copper slag decreased from 0.68 to 0.12 Pa·s due to the reduction of magnetite. The sedimentation of copper matte droplets could be enhanced by mechanical stirring.
研究领域:
冶金工程
·
材料科学
✓ 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）