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Multi-objective optimization of p-xylene oxidation process using an improved self-adaptive differential evolution algorithm

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Chinese Journal of chemical Engineering 2017年第8期25卷 983-991页

作者： Lili Tao Bin Xu Zhihua Hu Weimin Zhong College of Engineering Shanghai Polytechnic University School of Mechanical Engineering Shanghai University of Engineering Science Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology

The rise in the use of global polyester fiber contributed to strong demand of the Terephthalic acid （TPA）. The liquid-phase catalytic oxidation of p-xylene （PX） to TPA is regarded as a critical and efficient chemical process in industry [ 1 ]. PX oxidation reaction involves many complex side reactions, among which acetic acid combustion and PX combustion are the most important. As the target product of this oxidation process, the quality and yield of TPA are of great concern. However, the improvement of the qualified product yield can bring about the high energy consumption, which means that the economic objectives of this process cannot be achieved simulta- neously because the two objectives are in conflict with each other. In this paper, an improved self-adaptive multi-objective differential evolution algorithm was proposed to handle the multi-objective optimization prob- lems. The immune concept is introduced to the self-adaptive multi-objective differential evolution algorithm （SADE） to strengthen the local search ability and optimization accuracy. The proposed algorithm is successfully tested on several benchmark test problems, and the performance measures such as convergence and divergence metrics are calculated. Subsequently, the multi-objective optimization of an industrial PX oxidation process is carried out using the proposed immune self-adaptive multi-objective differential evolution algorithm （ISADE）. optimization results indicate that application oflSADE can greatly improve the yield of TPA with low combustion loss without degenerating TA quality.

关键词： p-Xylene oxidation Operation condition optimization Multi-objective optimization Self-adaptive differential evolution

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Magnetic Fe/Carbon/Polymer Composite Hydrogels for Efficient Degradation of Antibiotics in Simulated Wastewater

SSRN

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SSRN 2021年

作者： Liu, Da Gu, Wenyi Zhou, Wenqi He, Wenjia Liu, Lizheng Xu, Ying Zhou, Liang Zhang, Jinlong Liu, Yongdi Lei, Juying National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology 130 Meilong Road Shanghai200237 China Shanghai Geotechnical Engineering Detecting Centre 522 Huanzhen South Road Shanghai200442 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 Key Laboratory for Advanced Materials Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai200237 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology 130 Meilong Road Shanghai200237 China

Three kinds of hydrogel materials combining MOF-derived magnetic Fe/porous carbon (MagFePC) with sodium alginate (SA), polyacrylic acid (PAA) and agarose (AG) were prepared by different methods for removal of norfloxacin (NOR) antibiotics in simulated wastewater. After comparison, MagFePC/SA hydrogels synthesized by a titration forming method were found to have the advantages of simple preparation, good toughness, abundant pores and high Fenton activity. MagFePC/SA can effectively activate H2O2 to remove NOR under neutral conditions, and there was almost no leaching of iron ions, causing no secondary pollution to the environment. Mechanism study revealed that ·O2- and 1O2 were the main active species for the degradation of NOR pollutants, and cyclic experiments showed the materials still had good degradation ability after repeated cycles indicating good stability and reusability of the materials. More important, we built a simple automated wastewater treatment unit that can completely degrade a 5 mg/L NOR antibiotic solution at a flow rate of 2 mL/min. Current works showed that MagFePC/SA had the advantages of simple synthesis, outstanding degradability, excellent stability and eco-friendly reaction, which was a wastewater treatment material with good prospect for industrial application. © 2021, The Authors. All rights reserved.

关键词： Antibiotics

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New insights into the co-locating concept on synergistic co-digestion of sewage sludge and food waste towards energy self-sufficient in future WWTPs

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Bioresource Technology Reports 2020年 10卷

作者： Wang, Nan Zheng, Tianlong Ma, Yingqun School of Chemical Engineering University of Science and Technology Liaoning Anshan114051 China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences 18 Shuangqing Road Haidian District Beijing100085 China Advanced Environmental Biotechnology Centre Nanyang Environment & Water Research Institute Nanyang Technological University 1 Cleantech Loop Singapore637141 Singapore

An innovative co-locating concept base on synergistic co-digestion of sewage sludge (SS) and food waste (FW) was proposed and verified in this study. The results showed that a biggest synergistic effect happened in the co-digestion of SS and FW in volatile solid (VS) mixing ratio of 1:1 with the highest methane yield of 415.3 mL/g VS. It is estimated that about 5.83 × 109 m3 of methane (equivalent to 22.86 billion kWh electric energy) could be generated from China's SS and FW annually by adopting the proposed co-digestion strategy, which was more than enough to meet the annual electric energy demand in China's WWTPs. The analysis of the engineering feasibility and economic viability clearly suggests that the future WWTPs can be transformed to a powerful profit producer instead of consumer by adopting the proposed co-locating concept, which indeed offer a new insight for future of SS and FW management towards a great environmental and economic sustainability. © 2019 Elsevier Ltd

关键词： Sewage sludge

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advanced oxidation technology for H_2S odor gas using non-thermal plasma

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Plasma Science and Technology 2018年第5期20卷 45-50页

作者： Tao ZHU Ruonan WANG Wenjing BIAN Yang CHEN Weidong JING State Key Laboratory of Petroleum Pollution Control Beijing 102206 People's Republic of China School of Chemical & Environmental Engineering China University of Mining & Technology (Beijing) Beijing 100083 People's Republic of China Beijing Advanced Sciences and Innovation Centre of CAS Beijing 101407 People's Republic of China

Non-thermal plasma technology is a new type of odor treatment *** deal with H2Sfrom waste gas emission using non-thermal plasma generated by dielectric barrier *** the basis of two criteria,removal efficiency and absolute removal amount,we deeply investigate the changes in electrical parameters and process parameters,and the reaction process of the influence of ozone on H2S gas *** experimental results show that H2S removal efficiency is proportional to the voltage,frequency,power,residence time and energy efficiency,while it is inversely proportional to the initial concentration of H2S gas,and ozone *** study lays the foundations of non-thermal plasma technology for further commercial application.

关键词： plasma odor dielectric barrier discharge absolute removal amount oxidation,reaction process removal efficiency

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Fundamental Theories and key Technologies for Smart andOptimal Manufacturing in the Process Industry

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Engineering 2017年第2期3卷 154-160页

作者： Feng Qian Weimin Zhong Wenli Du Key Laboratory of Aflvanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and TechnologyShanghai 200237 China

Given the significant requirements for transforming and promoting the process industry, we present themajor limitations of current petrochemical enterprises, including limitations in decision-making, produc-tion operation, efficiency and security, information integration, and so forth. To promote a vision of theprocess industry with efficient, green, and smart production, modern information technology should beutilized throughout the entire optimization process for production, management, and marketing. To focuson smart equipment in manufacturing processes, as well as on the adaptive intelligent optimization of themanufacturing process, operating mode, and supply chain management, we put forward several key scien-tific problems in engineering in a demand-driven and application-oriented manner, namely：intelligentsensing and integration of all process information, including production and management information; collaborative decision-making in the supply chain, industry chain, and value chain, driven by knowledge; cooperative control and optimization of plant-wide production processes via human-cyber-physical in-teraction; and Q life-cycle assessments for safety and environmental footprint monitoring, in addition totracing analysis and risk control. In order to solve these limitations and core scientific problems, we furtherpresent fundamental theories and key technologies for smart and optimal manufacturing in the processindustry. Although this paper discusses the process industry in China, the conclusions in this paper can beextended to the larocess industry around the world.

关键词： Process industry Smart and optimal manufacturing Green manufacturing High-end manufacturing Optimality assessment

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Finite-time containment control of nonlinear multi-agent systems with non-singular terminal sliding mode

Finite-time containment control of nonlinear multi-agent sys...

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2018 Australian and New Zealand control Conference, ANZCC 2018

作者： Lu, Hui He, Wangli Han, Qing-Long Ge, Xiaohua Peng, Chen School of Mechatronic Engineering and Automation Shanghai University Shanghai200444 China Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai200237 China School of Software and Electrical Engineering Swinburne University of Technology MelbourneVIC3122 Australia

ISBN: (纸本)9781538666173

This paper is concerned with finite-time containment control problem for second-order nonlinear multi-agent systems with multiple dynamic leaders. Two new containment control protocols are developed to ensure that all followers converge to the dynamic convex hull spanned by the dynamic leaders in a finite time based on the terminal sliding mode and non-singular terminal sliding model, respectively. Moreover, the non-singular terminal sliding mode method is used to eliminate the singular problem associated with the terminal sliding mode control. Criteria on the existence of desired containment control protocols are also derived. Furthermore, the settling time is estimated under the proposed protocols. Simulation results illustrate the effectiveness of the developed theory in the last. © 2018 IEEE.

关键词： Multi agent systems

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Urea/Thiourea Imine Linkages Provide Accessible Holes in Flexible Covalent Organic Frameworks and Dominates Self-Adaptivity and Exciton Dissociation

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Angewandte Chemie 2024年第7期137卷

作者： Chencheng Qin Prof. Xiaodong Wu Wenyan Zhou Miao Li Prof. Shuai Bi Prof. Lin Tang Dr. Hao Huang Prof. Wenguang Tu Prof. Xingzhong Yuan Prof. Edison Huixiang Ang Prof. Weiling Sun Long Chen Zhaoli Liu Prof. Bing He Prof. Lai Lyu Prof. Yan Wu Prof. Wen Liu Prof. Hou Wang College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education) Hunan University Changsha 410082 China These authors equally contributed this work College of Materials Science and Engineering Nanjing Tech University Nanjing 211816 China School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore School of Science and Engineering The Chinese University of Hong Kong Shenzhen 518172 Guangdong P. R. China Natural Sciences and Science Education National Institute of Education Nanyang Technological University Singapore 637616 Singapore The Key Laboratory of Water and Sediment Sciences Ministry of Education College of Environmental Sciences and Engineering Peking University Beijing 100871 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University 430200 Wuhan China Institute of Rural Revitalization Guangzhou University Guangzhou 510006 China College of Environment and Ecology Hunan Agricultural University Changsha 410128 P. R China National Laboratory for Molecular Sciences Peking University Beijing 100871 China

Unraveling the robust self-adaptivity and minimal energy-dissipation of soft reticular materials for environmental catalysis presents a compelling yet unexplored avenue. Herein, a top-down strategy, tailoring from the unique linkage basis, flexibility degree, skeleton electronics to trace-guest adaptability, is proposed to fill the understanding gap between micro-soft covalent organic frameworks (COFs) and photocatalytic performance. The thio(urea)-basis-dominated linkage within benzotrithiophene-based COFs induce the framework contraction/swelling (intralayer micro-flexibility) in response to tetrahydrofuran or water. Adaptability of micro-flexible thiourea-COF with pore hydrophilicity not only contributes to the favorable mass transfer, but also enhances the accessible redox active sites, culminating in nearly 100 % removal of micropollutant with low-energy dissipation in wastewater. The incorporating urea/thiourea into imine linkage facilitates polarization reduction and exciton dissociation within skeleton wall, inducing strong localization for holes. This transformation facilitates interchain charge transport and unbalanced distribution conducive to oxidative holes-mediated micropollutant decomposition.

关键词： micro-flexible COFs conformation photocatalysis self-adaptivity

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Regulation of soil moisture using zone model predictive control

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IFAC-PapersOnLine 2018年第18期51卷 762-767页

作者： Mao, Yawen Liu, Su Nahar, Jannatun Liu, Jinfeng Ding, Feng Department of Chemical & Materials Engineering University of Alberta EdmontonABT6G 2V4 Canada Key Laboratory of Advanced Process Control for Light Industry School of Internet of Things Engineering Jiangnan University Wuxi214122 China

This paper concerns the input-output model identification and zone model predictive control of an agro-hydrological system modeled by a partial differential equation. The primary control objective is to maintain the soil moisture within a desired range which is suitable for grass grow. There is also a secondary control objective which is to reduce the total irrigation amount. First, a linear parameter varying (LPV) model is identified for controller design purpose using a maximum likelihood gradient-based iterative estimation method. Then, based on the LPV model, a zone model predictive control (MPC) is designed which uses an output disturbance and state observer to reduce model-plant mismatch and an asymmetric target zone to reduce irrigation amount under weather uncertainties while maintaining the soil moisture within the target range. Simulation studies show that the LPV model is a good approximation of the original nonlinear model and effectively reduces the online computational load of the MPC, and that the proposed zone MPC can lead to significant water conservation. © 2018

关键词： Model predictive control

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Construction of surface pit-structured g-C3N4 by induced SiO2 hard template for boosted piezoelectric-assisted photocatalytic H2O2 production

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Journal of colloid and interface science 2025年第Pt 1期699卷 138118页

作者： Zixuan Guo Kaiqu Sun Suchang Zou Bo Xiong Lijing Wang Weilong Shi Yan Sun Feng Guo School of Energy and Power Jiangsu University of Science and Technology Zhenjiang Jiangsu 212114 China. School of Material Science and Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212114 China. School of Chemistry and Materials Science Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables Hubei Engineering University Xiaogan 432000 China. Henan Engineering Center of New Energy Battery Materials College of Chemistry and Chemical Engineering Shangqiu Normal University Shangqiu 476000 China. School of Material Science and Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212114 China. Electronic address: shiwl@***. Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life Sciences Suzhou University of Science and Technology Suzhou City Jiangsu Province 215009 China. Electronic address: juzi147@***. School of Energy and Power Jiangsu University of Science and Technology Zhenjiang Jiangsu 212114 China. Electronic address: gfeng0105@***.

Solar-driven synthesis of hydrogen peroxide (HO) represents a promising pathway for sustainable energy production, characterized by environmental friendliness and industrial feasibility. The coupling of multi-field co-assisted systems, integrating piezoelectric field modulation, represents a pioneering modification strategy that significantly enhances the photocatalytic HO production efficiency through synergistic interfacial charge separation and optimized redox kinetics. Herein, the surface pit-structured g-CN (SP-CN) was successfully synthesized via a straightforward hard-template-assisted thermal polymerization method for boosted piezoelectric-assisted photocatalytic HO production under full-spectrum irradiation. Systematic investigations demonstrate that these surface pits of SP-CN endow the material with dual functional enhancements, including broadened light absorption and amplified dipole moment, promotes charge carrier separation/migration under piezoelectric polarization while creating abundant exposed active sites for oxygen adsorption. The testing results indicated that under piezoelectric-assisted photocatalysis, the HO generation rate of SP-CN reached 189.8 μM·h (227.76 μmol·g·h), which is 14.4 times that of g-CN under sole photocatalysis, and the saturation phenomenon observed in the later stages of performance testing highlighted its exceptional capability. In addition, cyclic testing confirms that SP-CN can still maintain its activity after multiple reactions. This unique structural configuration establishes a synergistic piezoelectric-photocatalytic system that effectively addresses the intrinsic limitations of conventional g-CN through simultaneous improvements in photon utilization, charge dynamics, and surface reactivity.

关键词： H(2)O(2) production Photocatalytic Piezoelectric-assisted Pit-structured g-C(3)N(4) SiO(2) hard template

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Superhydrophobic PU Sponge Modified by Hydrophobic Silica NPs—Polystyrene Nanocomposite for OilWater Separation

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Macromolecular Symposia 2020年第1期393卷 2000035-2000035页

作者： Sutar, Rajaram S. Salunkhe, Revati C. Latthe, Sanjay S. Kodag, Vishnu S. Shewale, Poonam M. Shinde, Shital R. Sajjan, M.B. Karennavar, M.H. Sadasivuni, Kishor Kumar Mohite, Santosh V. Liu, Shanhu Xing, Ruimin Henan Key Laboratory of Polyoxometalate Chemistry Henan Joint International Research Laboratory of Environmental Pollution Control Materials College of Chemistry and Chemical Engineering Henan University Kaifeng China Self-cleaning Research Laboratory Department of Physics Raje Ramrao College Jath Affiliated to Shivaji University KolhapurMaharashtra India Dr. D. Y. Patil School of Engineering & Technology Lohegaon PuneMaharashtra India Vidnyan Mahavidyalaya SangolaMaharashtra India Department of Zoology Raje Ramrao College JathMaharashtra India Center for Advanced Materials Qatar University Doha Qatar

In this study, the hydrophobic silica nanoparticles (NPs) are synthesized by simple solgel processing of polymethylhydrosiloxane (PMHS). The nanocomposite solution is prepared by adding hydrophobic silica NPs in polystyrene solution and applied on the skeleton of polyurethane sponge by simple immersion-drying process. The as-prepared sponges exhibited superhydrophobic property with water contact angle 161 and oil contact angle nearly 0 and can separate oil from oilwater and oilmuddy water mixture. The superhydrophobic sponge has sustainable anti-wetting property under cross sectional cutting, pressing and twisting, and different pH environment. Such superhydrophobic sponge is suitable for practical application on a large scale. © 2020 Wiley-VCH GmbH

关键词： Nanocomposites

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