Membranes
·
2025
·Vol. 15
·期 5
·129
·
IF 3.6
Shichang Xu,Long Zhang,Zhen Zhang,Lixin Xie,Wen Zhang
In this study, the integrated process of reverse osmosis (RO) and electrodialysis (ED) is developed to concentrate the dilute solution of acetic acid (HAc). The key parameters, such as RO pressure, ED voltage, and ED volume ratio, were systematically evaluated and the operation conditions of the processes were optimized. Under an operating pressure of 5 MPa, RO can enrich low-concentration HAc from 1.5 wt.% to 6.5% wt.% and the energy consumption is 0.37 kW·h·kg−1. Next, RO-concentrated water was used as the ED feed and the first ED with a volume ratio of the concentrated to dilute chamber of 1:4 was carried out under the conditions of a flow rate of 30 L/h and an operating voltage of 12 V; the HAc concentration reached 12.50 wt.%. The second ED with a volume ratio of 1:5 made the final HAc concentration reach 19.02 wt.%. This study shows that using RO-concentrated water instead of initial water for the ED process can reduce water energy consumption and cost markedly, and the RO–ED integrated process can efficiently pre-enrich low-concentration HAc aqueous solution, and the enriched HAc concentration meets the requirements for the further distillation of HAc.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Cong Jiang,Maohong Fan,Ge Gao,Wufeng Jiang,Xiaoshan Li,Cong Luo,Liqi Zhang,Fan Wu
In order to alleviate the intensive energy demand of amine-based post-combustion carbon capture technology, metal oxyhydroxide AlOOH of nanoscale was synthesized through the hydrothermal method and applied to accelerate the CO 2 desorption rate and reduce the regeneration heat duty of aqueous monoethanolamine (MEA) solution for the first time. Results showed that the use of AlOOH could accelerate the desorption rate by up to 560% and increase the desorption amount by 251%. By comparing the performance between AlOOH and Al 2 O 3 , it can be found that the presence of extra hydroxyl groups is 20.6% more efficient in catalyzing CO 2 desorption. According to a simplified heat transfer model created in this work, AlOOH could reduce the heat duty by 17% with only 0.1 wt% loading, which exhibited the highest performance cost ratio among related literature. In addition, the cyclic stability of AlOOH was confirmed through various characterization methods, including XRD, FT-IR, SEM, and N 2 adsorption–desorption. More importantly, a possible catalytic mechanism of AlOOH was discussed and proved where it could change reaction pathways in different CO 2 loading regions. This work reveals a promising research direction towards cost-efficient and high-performance metal oxyhydroxide catalysts in the catalytic amine regeneration field to approach the net-zero carbon emission goal.
研究领域:
材料科学
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环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-16
·
IF 3.8
Wang Qian,Gong Dehong,Zhang Zhongxiao,Zhu Jiangdong,Luo Qingling
The high energy consumption of Carbon Capture Utilization and Storage(CCUS) promotes the research of integrated absorption and mineralization technology. A novel DEEA/AEP biphasic absorbent is used to absorb \(\hbox {CO}_{2}\) . After phase separation, only one phase enriched with the absorption product is sent into the mineralization system, then reacts with \(\hbox {Ca(OH)}_{2}\) to produce \(\hbox {CaCO}_{3}\) at normal temperature and pressure. The effects of temperature, Ca/C and dispersion of the system were investigated, and cyclic utilization experiment was also conducted. The process was characterized and analyzed by Thermal gravimetric analysis (TGA), X-ray diffraction (XRD), and nuclear magnetic resonance ( 13 C NMR). The results showed that at 50 \(^{\circ }\) C, Ca/C = 1, the extent of mineralization of \(\hbox {CO}_{2}\) -enriched phase mineralization was 95.73% after ultrasonic treatment for 30 min. During 6 cycles, the volume percentage of \(\hbox {CO}_{2}\) -enriched phase could be maintained at 52–55%, and the \(\hbox {CO}_{2}\) load was 11.92mol/L. The results above indicate that the \(\hbox {CO}_{2}\) -enriched phase mineralization technology after absorption by biphasic absorbent can effectively capture \(\hbox {CO}_{2}\) , realize recycling, and reduce CCUS energy consumption.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Yidong Xiao,Hedong Chen,Minzhang Li,Qinyu He,Than Zaw Oo,Mono Zaw,Nyein Wink Lwin,Kwun Nam Hui,Min Luo,Danling Tang,Guangguo Ying,Fuming Chen
The solubility feature of redox electrolyte is a key factor to influence the performance of salt removal in redox flow electrode capacitive deionization . Herein, a novel redox flow desalination using ionic liquid (IL) as the eco-friendly solvent is proposed, i.e., 1-ethyl-3-methylimidazolium acetate. The high salt removal rate of 4.82 μg·min −1 ·cm −2 was obtained at the current density of 11 mA·cm −2 . The low energy consumption of 254.12 kJ·mol −1 was achievable in IL, compared with 466.3 kJ·mol −1 in aqueous solution and 317.86 kJ·mol −1 ethanol. In addition, a long-term test with 11 cycles was conducted, and the real seawater was desalinated to a freshwater standard in batch mode. This work is significant for development of low-energy consumption in redox flow desalination via the usage of novel ionic liquids as solvent.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Sustainability
·
2025
·
IF 27.1
Wang Yanjing,Wen Guobin,Liu Zhijuan,Thuy Nga Ta Thi,Dong Chung-Li,You Jie,Xie Chao,Du Shiqian,Zhang Fei,Liu Qie,Wei Jianrong,Cao Yu,Peng Xinda,Yuan Yahong,Wang Yanyong,Wang Shuangyin
Efficient uranium extraction from seawater has the potential to secure an abundant and reliable supply of nuclear fuel, providing affordable energy with minimized carbon emissions. Among the many extraction methods, the electrochemical route has emerged as a promising choice owing to its fast kinetics and materials regeneration. The major challenges facing this technology, however, lie in its high energy consumption, low extraction efficiency and poor selectivity. Here we show a bipolar electrochemical uranium extraction (EUE) system that combines cathodic direct electroreduction of uranium species and electrochemistry-assisted indirect uranium reduction at the anode. The EUE device operates at an ultra-low voltage of merely 0.6 V, exhibiting an efficiency of ~100% for sources with a wide range of uranium concentrations (1–100 ppm). This bipolar EUE system in natural seawater displays excellent uranium selectivity (above 85.3%), long-term stability (45 cycles), low energy consumption (1,944 kWh kg −1 U) and cost advantage (US$83.2 kg −1 U). This work opens an avenue to the electrochemical system design for sustainable recycling of different waste resources.
研究领域:
能源技术
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材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2015
·
IF 3.091
Jun Li,Chenjia You,Zhaoxian Lyu,Chi Zhang,Lifang Chen,Zhiwen Qi
To reduce the heavy energy consumption of the conventional dehydration process of bioethanol production from biomass fermentation broth, this work aims to develop a fuel-based ethanol dehydration process directly extracted by gasoline additive. Methyl tert -butyl ether (MTBE) is screened and validated as an available entrainer of heteroazeotropic distillation from gasoline additives by analyzing and determining residue curve maps on the basis of simulation and experimental method. Two fuel-based ethanol separation processes with MTBE as entrainer, i.e. direct-cycle scheme and three-column scheme, are proposed and optimized by using ASPEN PLUS. It indicates that the proposed dehydration process with MTBE as entrainer can significantly reduce the energy and entrainer consumption, and the product can be directly used in gas pool. The techno-economic evaluation indicates MTBE scheme with 8000 ton/year ethanol production presents lower capital and utility costs than isooctane scheme.
研究领域:
生物工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Energy Research
·
2021
·
IF 4.008
Li Jiayi,Zhou Wei,Huang Yuming,Gao Jihui
Replacing the oxygen evolution reaction (OER), which is of high energy consumption and slow kinetics, with the more thermodynamically favorable reaction at the anode can reduce the electricity consumption for hydrogen production. Here we developed a lignin-assisted water electrolysis (LAWE) process by using Ti/PbO2 with high OER overpotential as the anode aimed at decreasing the energy consumption for hydrogen production. The influence of key operating parameters such as temperature and lignin concentration on hydrogen production was analyzed. Compared with alkaline water electrolysis (AWE), the anode potential can be decreased from 0.773 to 0.303 (V vs. Hg/HgO) at 10 mA/cm2 in LAWE, and the corresponding cell voltage can be reduced by 546 mV. With increasing the temperature and lignin concentration, current density and H2 production rate were efficiently promoted. Furthermore, the anode deactivation was investigated by analyzing the linear sweep voltammetry (LSV) and cyclic voltammetry (CV) tests. Results showed that the anode deactivation was affected by the temperature.
研究领域:
能源化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOM
·
2022
·Vol. 74
·期 5
·1889-1899
·
IF 2.597
Zhu Qiang,Yang Jianguang,Tang Chaobo,Nan Tianxiang,Ding Ruize,Liu Jiang
This work proposes a novel nitrogen bottom-blowing method to enhance mass transfer in the molten salt electrolysis process, improve current efficiency, and reduce electrolysis energy consumption. The effect of nitrogen agitation on the dissolution of Sb 2 S 3 and Sb was studied. The effects of nitrogen flow rate, electrolytic temperature, cell voltage, and pole spacing on the distribution behavior of Sb during constant piezoelectric reduction were investigated. The results show that nitrogen agitation can obviously accelerate the dissolution of Sb 2 S 3 . The current efficiency of the cathode reaches 92.76%, the energy consumption is 1.78 kWh kg −1 , and the grade of crude antimony is 98.5%. Compared to no nitrogen stirring, electrolytic current efficiency is improved by 19.87% and the energy consumption is saved by 20.89%. Furthermore, the appropriate flow rate of nitrogen accelerates the removal of sulfur from the reactor and avoids the formation of high-priced antimony compounds.
研究领域:
冶金学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2022
·
IF 6.465
Feifan Huang,Weijun Liu,Shaoai Chen,Zhongxun Tian,Jingtao Wei
Thermal desorption of adsorbate in activated carbon is the main part in the thermal regeneration process of spent activated carbon, and previous studies have carried out a series of numerical simulations on it. However, since activated carbon is a porous medium, the heat and mass transfer in activated carbon is different from that in solid. In this paper, a multiphase model of heat and mass transfer in porous media was constructed to study the thermal desorption characteristics of adsorbate in spent activated carbon. In addition, a simplified evaporation rate formula is proposed in this paper, and the agreement between the simulation and the experimental results is verified. When the surroundingtemperature is less than 673.15 K, increasing the surrounding temperature has a significant effect on reducing the thermal desorption time of the adsorbate. Using activated carbon with a thermal conductivity of 5 W / m ∙ K can save about 40% of energy consumption. The model established in this paper can accurately simulate the thermal desorption of adsorbate in activated carbon, which is helpful to deeply understand the mechanism of activated carbon thermal regeneration. In engineering practice, the model can provide technical support for optimizing the thermal regeneration process of spent activated carbon and reducing energy consumption in a targeted manner.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS
·
2025
·
IF 3.3
Qinghua Fu,Peng Wang,Weilin Li,Zhenhua Cai,Shiji Zhao,Weidong Ling,Mingxun Li,Xiaochuan Tang,Ziyi Song
Obesity poses a significant risk for metabolic disorders, such as insulin resistance and metabolic-associated fatty liver disease (MAFLD), yet effective treatments remain limited. Cell Death-Inducing DNA Fragmentation Factor-α-Like Effector C (CIDEC), a lipid droplet membrane protein, facilitates lipid droplet fusion and is crucial for adipose tissue expansion, making it a key target for obesity and related metabolic diseases. However, previous research revealed that complete genetic deletion of Cidec in adipose tissues, while reducing fat accumulation, induced severe insulin resistance in high-fat diet (HFD)-fed mice, potentially due to ectopic fat storage in the liver. Given that complete knockout is an extreme approach, partial inhibition holds greater clinical relevance. Therefore, this study aimed to investigate the effects of partial inhibition of CIDEC in adipose tissues on fat accumulation and insulin sensitivity in mice. Using the Cre-LoxP system, we generated adipose Cidec haploinsufficient mice. Under a standard diet, these mice exhibited normal body weight, fat accumulation, and insulin sensitivity. Notably, under HFD conditions, mice with partial Cidec deficiency showed reduced fat accumulation in adipose tissues while hepatic fat accumulation remained unchanged, accompanied by improved insulin sensitivity and increased energy expenditure. Mechanistically, we found partial Cidec deficiency activated thermogenic program in adipocytes in vivo and in vitro through the ATGL-PPARα pathway. In conclusion, adipose CIDEC partial inhibition attenuates HFD-induced obesity and insulin resistance by enhancing ATGL-PPARα-mediated energy expenditure, establishing this approach as a promising therapeutic strategy for obesity and related metabolic diseases.
研究领域:
生物学
·
医学
·
代谢疾病
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2024
·
IF 4.7
Zhi-peng XU,Zuo-wei LIU,Xue-yi GUO,Dong LI,Ming-jin ZOU,Qing-hua TIAN
A process for gallium recovery by cyclone electrowinning was proposed to inhibit concentration polarization and improve current efficiency (CE). The diffusion coefficient of GaO 2 − in 120 g/L NaOH solution was determined to be 1.65×10 −7 cm 2 /s by electrochemical study. The effect of various parameters on gallium electrowinning was investigated, and the optimum conditions were determined as: titanium cathode, current density of 750 A/m 2 , gallium concentration of 39.9 g/L, NaOH concentration of 120 g/L, and circulation flow of 200 L/h. Under these conditions, the CE and gallium recovery of electrowinning were 47.9% and 90.2%, respectively. The precipitated gallium can be easily separated from the cathode, and the final purity of gallium after washing was 99.993%. The energy consumption (EC) of gallium cyclone electrowinning was about 9048 kW·h/t. Overall, it is suggested that cyclone electrowinning is a promising process for gallium production with high CE and low EC.
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
LANGMUIR
·
2025
·
IF 3.9
Xi Chen,Lu Guo,Kwan San Hui,Min Luo,Danling Tang,Fuming Chen
Electrode materials are crucial for the performance of redox-flow desalination (RFD), a promising technology for addressing the increasing global demand for freshwater. However, the lack of efficient and stable electrode options has hindered its widespread application. To overcome this limitation, we developed polyaniline (PANI)-modified graphite foil electrodes, achieving a significant reduction in energy consumption for RFD (up to 78.8%). Electrochemically deposited onto the surface of graphite foil, the PANI film improves redox behavior and enhances desalination performance. At a current density of 3 mA cm–2, energy consumption decreased from 125.44 to 39.26 KJ mol–1 with the PANI modification and from 207.73 to 40.11 KJ mol–1 at 6 mA cm–2. The modified electrodes also achieved salt removal rates of 1.60 and 3.17 μmol cm–2 min–1 at the respective current densities of 3 and 6 mA cm–2. In addition, the PANI film demonstrated excellent multicycle and long-term stability. These findings pave the way for the development of high-performance RFD systems and have implications for other electrochemical desalination technologies.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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