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Tracking performance limitations of MIMO discrete-time networked control systems with multiple constraints

Science China(Information Sciences) 2023年第8期66卷 267-268页

作者： Xiaowei JIANG Bin ZHANG Xiangyong CHEN Huaicheng YAN School of Automation China University of Geosciences Key Laboratory of Industrial Internet of Things & Networked Control Ministry of Education Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education School of Automation and Electrical Engineering Linyi University Key Laboratory of Smart Manufacturing in Energy Chemical Process of the Ministry of Education

Dear editor,Networked control systems(NCSs) have attracted widespread attention in some fields because they offer the advantages of reduced cabling, greater resource sharing,and ease of installation and maintenance [1]. However, in an unreliable network environment, network constraints can significantly limit the performance of NCSs.

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Automated Machine Learning-Assisted Low-Carbon Operation Optimization for Catalytic Cracking Units: A Multi-Objective Optimization Perspective

Automated Machine Learning-Assisted Low-Carbon Operation Opt...

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Intelligent Robotics and Automatic control (IRAC), International Conference on

作者： Tingwei Zhang Yurong Liu Xin Peng Weimin Zhong Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of Education East China University of Science and Technology Shanghai China Engineering Research Center of Process System Engineering Ministry of Education East China University of Science and Technology Shanghai China State Key Laboratory of Industrial Control Technology East China University of Science and Technology Shanghai China

ISBN: (数字)9798350389807

ISBN: (纸本)9798350389814

This study proposes a low-carbon operational optimization framework for fluid catalytic cracking (FCC) units and conducts a comprehensive evaluation of their economic performance, energy utilization, and environmental impacts. First, a low-carbon energy-saving operational optimization framework was developed to enhance the economic benefits of FCC units while exploring their carbon reduction potential. Subsequently, a surrogate-assisted model based on an automated machine learning (AutoML) framework was constructed to reduce computational costs. A carbon tax scenario was then introduced, converting CO 2 emissions into carbon tax values. This approach can improve the computational efficiency of the multi-objective optimization problem. The experimental results demonstrate that optimizing operational conditions increased unit-time profits by 0.5%, reduced CO 2 emissions by 1088.92 kgCO 2 eq/h, and decreased wind energy and steam energy consumption by 627.67 m 3 /h and 324.28 m 3 /h, respectively. The scientific optimization of operational parameters enhances production efficiency while mitigating environmental impacts, providing valuable guidance for energy conservation and emissions reduction in industrial processes and supporting sustainable development.

关键词： Economics Wind energy Energy conservation Production FCC Automated machine learning Computational efficiency Optimization Carbon emissions Carbon tax

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Facet-controlled LiMn_(2)O_(4)/C as Deionization Electrode with Enhanced Stability and High Desalination Performance

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Nano-Micro Letters 2022年第11期14卷 75-86页

作者： Yuxin Jiang Liyuan Chai Dehe Zhang Fangping Ouyang Xiangyuan Zhou Sikpaam IAlhassan Sailin Liu Yingjie He Lvji Yan Haiying Wang Wenchao Zhang School of Metallurgy and Environment Central South UniversityChangsha 410083People’s Republic of China Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution Changsha 410083People’s Republic of China Water Pollution Control Technology Key Lab of Hunan Province Changsha 410083People’s Republic of China School of Physics and Electronics Hunan Key Laboratory for Super-Microstructure and Ultrafast Processand Hunan Key Laboratory of Nanophotonics and DevicesCentral South UniversityChangsha 410083People’s Republic of China State Key Laboratory of Powder Metallurgy and Powder Metallurgy Research InstituteCentral South UniversityChangsha 410083People’s Republic of China School of Chemical Engineering and Advanced Materials Faculty of SciencesEngineering and TechnologyThe University of AdelaideAdelaide 5005Australia

Battery materials as emerging capacitive deionization electrodes for desalination have better salt removal capacities than traditional carbon-based ***_(2)O_(4),a widely used cathode mate-rial,is difficult to utilize as a deionization electrode due to its structural instability upon cycling and Mn dissolution in aqueous-based ***,a facile and low-cost ball-milling routine was proposed to prepare a LiMn_(2)O_(4)material with highly exposed(111)*** prepared electrode exhibited relatively low dissolution of Mn during cycling,which shows its long cycle *** the hybrid capacitive deionization system,the LiMn_(2)O_(4)/C electrode delivered a high desalination capacity of 117.3 mg g^(−1) without obvious capacity decay at a voltage of 1.0 V with a 20 mM initial salt *** addition,the exposed(111)facets significantly alleviated Mn ion dissolution,which also enhanced the structural steadiness.

关键词： Deionization electrode Desalination Lithium-ion battery

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Simultaneous hydrogen production with photo reforming of lactic acid over MXene derived MoS_(2)/TiO_(2)/Ti_(3)C_(2)nanowires

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Chinese Journal of Catalysis 2025年第4期71卷 234-245页

作者： Seemal Mansoor Zixu Hu Yuxin Zhang Muhammad Tayyab Mazhar Khan Zeeshan Akmal Liang Zhou Juying Lei Muhammad Nasir Jinlong Zhang Key Laboratory for Advanced Materials Shanghai Engineering Research Center for Multi–media Environmental Catalysis and Resource UtilizationJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical ProcessEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090HeilongjiangChina Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina COMSATS Univ Islamabad Interdisciplinary Res Ctr Biomed Mat IRCBMLahore CampusLahore 54000Pakistan

Developing efficient photocatalysts to address collaborative energy and environmental crises still faces significant *** this report,we present a highly efficient MXene–based photocatalyst,which is combined with MoS_(2)nano patches and TiO_(2)/Ti_(3)C_(2)(TTC)nanowires through hydrothermal *** all the composites tested,the optimized photocatalyst gave a remarkable H_(2)and revolving polylactic acid(PLA)into pyruvic acid(PA).Achieving a remarkable H_(2)evolution rate of 637.1 and 243.2μmol g^(−1)h^(−1),in the presence of TEOA and PLA as a sacrificial reagent under UV-vis(λ≥365 nm)light *** improved photocatalytic activity is a result of the combination of dual cocatalyst on the surface of TTC photocatalyst,which create an ideal synergistic effect for the generation of PA and the production of H_(2)*** MoS_(2)TiO_(2)/Ti_(3)C_(2)(MTT)composite can generate more photoexcited charge carriers,leading to the generation of more active radicals,which may enhance the system's photocatalytic *** work aims at demonstrating its future significance and guide the scientific community towards a more efficient approach to commercializing H_(2)through photocatalysis.

关键词： Photo reforming Polylactic acid Hydrogen evolution Lactic acid Pyruvic acid

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Analysis of the regulatory mechanism of exogenous IAA-mediated tryptophan accumulation and synthesis of endogenous IAA in Chlorococcum humicola

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Chemosphere 2024年 354卷 141633页

作者： Chen, Xiurong Ye, Xiaoyun Yu, Xiao Zhao, Jiamin Song, Meijing Yin, Danning Yu, Jiayu National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery School of Resources and Environmental Engineering East China University of Science and Technology Shanghai200237 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology Shanghai200237 China

The activated sludge method is widely used for the treatment of phenol-containing wastewater, which gives rise to the problem of toxic residual sludge accumulation. Indole-3-acetic acid (IAA), a typical phytohormone, facilitates the microalgal resistance to toxic inhibition while promoting biomass accumulation. In this study, Chlorococcum humicola (C. humicola) was cultured in toxic sludge extract and different concentrations of IAA were used to regulate its physiological properties and enrichment of high value-added products. Ultimately, proteomics analysis was used to reveal the response mechanism of C. humicola to exogenous IAA. The results showed that the IAA concentration of 5 × 10−6 mol/L (M) was most beneficial for C. humicola to cope with the toxic stress in the sludge extract medium, to promote the activity of rubisco enzyme, to enhance the efficiency of photosynthesis, and, finally, to accumulate protein as a percentage of specific dry weight 1.57 times more than that of the control group. Exogenous IAA altered the relative abundance of various amino acids in C. humicola cells, and proteomic analyses showed that exogenous IAA stimulated the algal cells to produce more indole-3-glycerol phosphate (IGP), indole, and serine by up-regulating the enzymes. These precursors are converted to tryptophan under the regulation of tryptophan synthase (A0A383V983), and tryptophan can be metabolized to endogenous IAA to promote the growth of C. humicola. These findings have important implications for the treatment of toxic residual sludge while enriching for high-value amino acids. © 2024 Elsevier Ltd

关键词： Amino acids

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Elimination of the pharmaceutical sulfadoxine by electro-Fenton: Reaction kinetics, oxidation pathway and stability of the electrode

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Chemosphere 2025年 375卷 144265页

作者： Petsi, Panagiota Plakas, Konstantinos V. Bizirtsakis, Panagiotis Anagnostopoulou, Kyriaki Moschona, Alexandra Lambropoulou, Dimitra Frontistis, Zacharias Department of Chemical Engineering University of Western Macedonia KozaniGR50132 Greece Chemical Process and Energy Resources Institute Centre for Research and Technology-Hellas 6th km of Charilaou-Thermis ThessalonikiGR57001 Greece Department of Chemistry Environmental Pollution Control Laboratory Aristotle University of Thessaloniki ThessalonikiGR54124 Greece Balkan Center 10th km Thessaloniki-Thermi Rd ThessalonikiGR 57001 Greece

In this study, the removal of sulfadoxine (SDX) with the electro-Fenton (EF) process is for the first time investigated, in a commercially available filter press electrochemical cell. A Gas Diffusion Electrode (GDE) was used as the cathode and a Dimensionally Stable Anode (DSA) as the anode. The effects of current density, recirculation flow, and pH on H2O2 generation were examined. The maximum H2O2 concentration was 457 mg/L at 50 mA/cm2, 200 mL/min, and pH 7 after 2 h of operation. Under the same conditions, the effect of Fe2+ on SDX oxidation and mineralization was studied. With 0.5 mM Fe2+, SDX was eliminated within 10 min, with 77.4% total organic carbon (TOC) removal after 2 h. Notably, Fe precipitation was observed at near-neutral pH, indicating that removal via coagulation and adsorption may have contributed to SDX elimination in addition to oxidation. Five transformation products (TPs) were identified via LC/HRMS Orbitrap, with four newly reported. The acute and chronic toxicity of the TPs was assessed in fish, daphnia, and green algae using ECOSAR software. Most TPs showed lower toxicity than SDX, though some exhibited increased toxicity, suggesting longer or more intense treatments may be needed. The stability of the GDE was evaluated over 10 consecutive cycles with 0.1 mM Fe2+. SDX removal remained stable, ranging from 72.2% to 85.4%, though H2O2 electrogeneration decreased steadily from 481.4 mg/L to 200.6 mg/L by the final cycle. These results suggest that while EF effectively removes SDX, improvements in H2O2 generation stability are necessary for long-term use. © 2025

关键词： Diffusion in gases

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Stable and Selective Catalysts for M-Cresol Hydrogenolysis to Aromatics Via Tailoring the Encapsulation Methods

SSRN

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SSRN 2022年

作者： Zhang, Jimei Shi, Yanchun Wu, Bi Sun, Sihan Li, Guotao Xu, Weichao Ning, Pengge Cao, Hongbin Chemistry & Chemical Engineering Data Center National Basic Public Science Data Center National Engineering Research Center of Green Recycling for Strategic Metal Resources Institute of Process Engineering Chinese Academy of Sciences Beijing Engineering Research Centre of Process Pollution Control Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

The removal of oxygen is an essential link for upgrading biomass phenolics to aromatics, which is achieved through catalytic hydrodeoxygenation way. Here, we designed and synthesized four encapsulated Ni@S-1 catalysts with similar sizes of S-1 crystals and Ni nanoparticles via tailoring the encapsulation methods. The highest hydrogenolysis activity of hydroxyl and hydrocarbons selectivity were obtained over Ni@S-1 via the in-situ encapsulation method (r[g aromatics •g Ni -1 •h -1 ] = 103.5 at 290 °C) in vapor hydrogenation of m -cresol as a model due to the average 2.5 nm Ni nanoparticles uniformly encapsulated within S-1 crystals for improving the shape selectivity with the vertical adsorption mode of phenolics. The appropriate porosities of Ni@S-1 catalysts are proven to play a crucial role in shape selective-catalysis for hydroxyl hydrogenolysis of m -cresol. Significantly, the outstanding stability of Ni@S-1 via the in-situ encapsulation method has been proven by the hydroxyl hydrogenolysis of vapor m -cresol for 200 h long-run without obvious deactivation. This work provided an insight into the tuning hydroxyl hydrogenolysis of phenolics by designing metal@zeolite catalysts with different microenvironment and well-dispersion of small metal nanoparticles. © 2022, The Authors. All rights reserved.

关键词： Hydrogenolysis

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In situ reconstruction of Au promoted CuOOH/NiOOH for efficient and selective ethylene glycol electrooxidation

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chemical Engineering Journal 2025年 515卷

作者： Jiang, Wenhan Zhu, Chen Xu, Hao Guan Liu, Ji Kai Wu, Yi Xiao Cao, Shiyu Yuan, Hai Yang Liu, Peng Fei Zhou, Yi State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology 130 Meilong Road Shanghai200237 China Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology Shanghai200237 China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and Technology 130 Meilong Road Shanghai200237 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

The replacement of water oxidation with thermodynamically favorable nucleophile oxidation reactions, such as the ethylene glycol oxidation reaction (EGOR), offers a promising approach to enhancing hydrogen production at reduced potentials. However, the competitive adsorption of hydroxyl and ethylene glycol molecules, along with side reactions like oxygen evolution, significantly impair the efficiency and selectivity of EGOR. In this work, a hierarchical composite catalyst consisting of Au/CuO on Ni foam, which can be in situ reconstructed into Au/CuOOH/NiOOH is presented. This modified catalyst provided synergistic multi-reactive sites for efficient EG electrooxidation. The resulting Au/CuOOH/NiOOH demonstrated a current density of 175 mA cm−2 at 1.5 V vs. reversible hydrogen electrode (RHE), achieving Faradaic efficiency of 96 % for EGOR and remarkable stability for over 200 h. A range of spectroscopic characterizations, electrochemical investigations, and theoretical calculations revealed that the in situ generated NiOOH served as the site for the adsorption and activation of OH−, CuOOH synergistically activated the EG reactant, while Au promoted catalytic performance by providing additional reactive sites for *OH and EG adsorption. Notably, glyoxal was identified as the special product of EGOR, resulting from the further oxidation of formic acid, which consumed the adsorbed *OH and inhibited additional oxidation of glyoxal. This work clarifies the specific EGOR mechanism on the composite catalyst and offers valuable insights into the design of multi-site synergistic catalytic electrodes. © 2025 Elsevier B.V.

关键词： Thermooxidation

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A New Approach for Scale-Up of Pulsed Disc and Doughnut Columns Based on the Similarity Principle

SSRN

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SSRN 2024年

作者： Xu, Dongbing Wang, Chi Chang, Chao Tan, Boren Yu, Xiaohua Duan, Xiaofei Wang, Yong Chen, Feiyue National Engineering Research Center of Green Recycling for Strategic Metal Resources Institute of Process Engineering Chinese Academy of Sciences Beijing100090 China University of Chinese Academy of Sciences Beijing100049 China School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou221116 China ARC Research Hub for Smart Process Design and Control Department of Chemical & Biological Engineering Monash University ClaytonVIC3800 Australia Kunming University of Science and Technology China Melbourne TrACEES Platform and School of Chemistry Australia Nanjing IPE Institute of Green Manufacturing Industry China

A detailed experimental study is performed to understand the effect of scaling up on the hydrodynamic behavior of Pulsed Disc and Doughnut Columns (PDDCs) using three different systems without mass transfer. The phase system used in the experiments consists of tap water as the dispersed phase and 10% P507/kerosene with different saponification rates as the continuous phase. Dispersed phase holdup and Sauter mean diameter (d32) were measured under different operating conditions. The operating parameters that have varied are the pulsation intensity and flow rate of both liquid phases. The geometrical parameters are plate spacing spacing and column diameter. Further, the empirical correlations based on the similarity principle have been proposed to predict the dispersed phased holdup and Sauter mean diameter for a better understanding of the scale-up process. © 2024, The Authors. All rights reserved.

关键词： Mass transfer

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In-Situ Construction of Modified Layer on the Surface of Anion Exchange Membrane to Improve Antifouling Performance

SSRN

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SSRN 2023年

作者： Cao, Renqiang Shi, Shaoyuan Duan, Feng Xu, Yang Li, Yuping Cao, Hongbin Wang, Yujie National Key Laboratory of Biochemical Engineering National Engineering Research Center of green recycling for strategic metal resources Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Ganjiang Innovation Academy Chinese Academy of Sciences Jiangxi Ganzhou341000 China

A new strategy combining electrodeposition with co-deposition modification was proposed to in-situ construct a stable antifouling modified layer on the AEM surface without disassembling the membrane stack. Specifically, dopamine (DA) was introduced into the electrodeposition process of poly (sodium 4-styrene sulfonate) (PSS) to co-deposit onto the AEM surface, in which the polymerization reaction could promote by supporting electrolyte (NaCl). The formation of cross-linked structure and π-π stacking effect during in-situ modification could ensure the stability of the modified layer. The in-situ modified AEM had a negatively charged and more hydrophilic surface, significantly improving the antifouling performance against organic matter (sodium dodecylbenzene sulfonate) without affecting desalination ***, it still had excellent antifouling properties after 96 h neutral rinsing. This work provided a novel approach for preventing organic fouling of AEM in ED process through surface modification. © 2023, The Authors. All rights reserved.

关键词： Sodium chloride

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