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第34届中国过程控制会议

作者： Peihao Du Ruyi Jiang Weimin Zhong Xin Peng Linlin Li Xiaolong Wu Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and Technology School of Automation and Electrical Engineering University of Science and Technology Beijing Faculty of Information Technology Beijing University of Technology

This paper proposes a self-healing control strategy based on a generalized observer,aiming at the widespread sensor additive faults in the activated sludge method-based sewage treatment process(STP).Firstly,the T-S fuzzy system identification scheme of the STP is ***,a generalized discrete system subject to sensor additive fault is constructed,and a stable fuzzy generalized observer is built by configuring some poles of the estimated error dynamic ***,the estimated fault is used to compensate the measurement output,and the self-healing control law is designed according to the pole configuration method to achieve the performance self-recovery of the STP control system under the sensor additive *** experiments are carried out on a standard platform of the STP to show that the proposed output-feedback self-healing control technique not only enables the quick switching of operating points,but also restores the original working condition after a fault,significantly decreasing the performance deterioration caused by sensor faults.

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Impact of ethanol and butanol blends with gasoline on hybrid electric vehicle emissions from RDE and WLTP

Impact of ethanol and butanol blends with gasoline on hybrid...

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Powertrain Systems for Net-Zero Transport conference, 2021

作者： Thomas, D.B. Li, H. Wang, X. Ropkins, K. Bannister, C. Hawley, G. Tomlin, A.S. Andrews, G.E. School of Chemical and Process Engineering Faculty of Engineering and Physical Sciences University of Leeds United Kingdom National Laboratory of Automotive Performance & Emission Test School of Mechanical Engineering Beijing Institute of Technology Beijing China Institute for Transport Studies Faculty of Environment University of Leeds Leeds United Kingdom Automotive Engineering Powertrain & Vehicle Research Centre Department of Mechanical Engineering University of Bath Bath United Kingdom

ISBN: (纸本)9781032112817

This paper investigated hybrid electric vehicle (HEV) tailpipe emissions from biofuel blends E5, E10 and B10 compared to E0 gasoline over WLTC and RDE tests. The greatest benefit from biofuel blends is the reduction of particle number (PN) emissions from the WLTC tests, which decreased by 20~50%. E10 and B10 fuels reduced CO emissions significantly. A 30% reduction in NOx was observed during the cold start phase of WLTC and RDE tests. The benefits of biofuels reduced/ diminished for the second and third phases, especially for the RDE tests, indicating the complexity and influence of traffic/engine variables for the RDE. © 2022 selection and editorial matter, Institution of Mechanical Engineers;individual chapters, the contributors.

关键词： Ethanol

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Synergistic effect of molybdenum disulphide and butylated hydroxytoluene in lithium complex grease

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Materials Today: Proceedings 2022年 57卷 1415-1421页

作者： Ramli, Najmuddin Mohd Mahmud, Mohd Sabri Mohd Zuhan, Mohd Khairul Nizam Musa, Musfafikri Razali, Mohd Najib Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Pahang Gambang 26300 Malaysia Department of Chemical Engineering Universiti Malaysia Pahang Pahang Gambang 26300 Malaysia Pusat Pengajian Diploma Universiti Tun Hussein Onn Malaysia Hab Pendidikan Tinggi Pagoh KM1 Jalan Panchor Johor Pagoh 84600 Malaysia MNR Multitech Sdn. Bhd. K02 Ground Floor Kompleks UMP Holdings Pahang Gambang 26300 Malaysia

Lubricating grease is vital as a sealant and provides extra protection for automotive parts, such as bearings. Bearings are subjected to friction and sliding wear, which results in the degradation of automotive or machinery performance. The present article analysed the effect of molybdenum disulphide (MoS2) and butylated hydroxytoluene (BHT) as grease additives in reducing the frictional and wear behaviour of steel ball bearings. The experiment was conducted by preparing two formulated lithium complex-based grease with a different blending of additives of BHT only (LCG 01/18) and MoS2 + BHT (LCG 01/5). The formulated greases were compared with two industrial greases as the controlled parameters. Next, the physical characterization of formulated and industrial greases was conducted which includes dropping point test (ASTM D2265-00), cone penetration test (ASTM D217-02) and oil separation test (ASTM D6184-17). Then, the four-ball test (ASTM D2266-01) was performed to identify the effect of additives on the wear and frictional coefficient behaviour. The blending of MoS2 and BHT improves the physical characterization of grease in terms of dropping point and oil separation. The blending of MoS2 and BHT also helps to decrease the wear diameter and frictional coefficient. Nonetheless, further study is desired to gain a thorough understanding of the processes so that an optimal system can be developed for the industry. © 2022

关键词： Wear of materials

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Magnetic superhydrophobic melamine sponges for crude oil removal from water

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Chemosphere 2024年 346卷 140533页

作者： Makoś-Chelstowska, Patrycja Slupek, Edyta Mielewczyk-Gryń, Aleksandra Klimczuk, Tomasz Department of Process Engineering and Chemical Technology Faculty of Chemistry Gdańsk University of Technology G. Narutowicza St. 11/12 Gdańsk80-233 Poland Institute of Nanotechnology and Materials Engineering Faculty of Applied Physics and Mathematics Advanced Materials Centre Gdańsk University of Technology G. Narutowicza St. 11/12 Gdańsk80-233 Poland

This paper proposes the preparation of a new sorbent material based on melamine sponges (MS) with superhydrophobic, superoleophilic, and magnetic properties. This study involved impregnating the surface of commercially available MS with eco-friendly deep eutectic solvents (DES) and Fe3O4 nanoparticles. The DES selection was based on the screening of 105 eutectic mixtures using COSMO-RS modeling. Other parameters affecting the efficiency and selectivity of oil removal from water were optimized using the Box-Bhenken model. Menthol:Thymol (1:1)@Fe3O4-MS exhibited the highest sorption capacity for real crude oils (101.7–127.3 g/g). This new sponge demonstrated paramagnetic behavior (31.06 emu/g), superhydrophobicity (151°), superoleophobicity (0°), low density (15.6 mg/cm3), high porosity (99 %), and excellent mechanical stability. Furthermore, it allows multiple regeneration processes without losing its sorption capacity. Based on these benefits, Menthol:Thymol (1:1)@Fe3O4-MS shows promise as an efficient, cost-effective, and eco-friendly substitute for the existing sorbents. © 2023 Elsevier Ltd

关键词： Magnetite

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Glycerol waste to value added products and its potential applications

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Systems Microbiology and Biomanufacturing 2021年第4期1卷 378-396页

作者： Chaitanya Reddy Chilakamarry A.M.Mimi Sakinah A.W.Zularisam Ashok Pandey Faculty of Chemical and Process Engineering Technology Universiti Malaysia PahangGambangKuantanMalaysia 26300 Faculty of Civil Engineering Technology Universiti Malaysia PahangGambangKuantanMalaysia 26300 Centre for Innovation and Translational Research CSIR-Indian Institute of Toxicology ResearchLucknow 226001India

The rapid industrial and economic development runs on fossil fuel and other energy *** oil reserves,environmental issues,and high transportation costs lead towards carbon unbiased renewable and sustainable *** to other carbon-based fuels,biodiesel is attracted worldwide as a biofuel for the reduction of global dependence on fossil fuels and the greenhouse *** biodiesel production,approximately 10%of glycerol is formed in the transesterification process in a biodiesel *** ditching of crude glycerol is important as it contains salt,free fatty acids,and methanol that cause contamination of soil and creates environmental challenges for ***,the excessive cost of crude glycerol refining and market capacity encourage the biodiesel industries for developing a new idea for utilising and produced extra sources of income and treat biodiesel *** review focuses on the significance of crude glycerol in the value-added utilisation and conversion to bioethanol by a fermentation process and describes the opportunities of glycerol in various applications.

关键词： Crude glycerol Bioethanol Biofuel Valuable products

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A Closer Look at How the Dispersive Liquid–Liquid Microextraction Method Works

SSRN

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SSRN 2024年

作者： Zaruba, Serhii Ovšonková, Michaela Makoś-Chelstowska, Patrycja Andruch, Vasil Department of Analytical Chemistry Institute of Chemistry Faculty of Science Pavol Jozef Šafárik University in Košice KošiceSK-04154 Slovakia Department of Process Engineering and Chemical Technology Faculty of Chemistry Gdańsk University of Technology Gdańsk80-233 Poland

Background: The dispersive liquid–liquid microextraction (DLLME) is one of the most popular miniaturized extraction procedures. Although DLLME and its modifications have been known for a long time and many analytical procedures have been developed, to the best of our knowledge there are few publications devoted to the formation and stability of the cloudy state, the role of the dispersive solvent, as well as the role of mechanical dispersion methods. The lack of information about the formation and stability of the cloudy state in DLLME is the problem that is being addressed in this ***: The dependence between the degree of dispersion (cloudy state quality) and its stability obtained by various emulsification procedures, such as solvent-assisted emulsification (using various dispersive solvents) and mechanical emulsification (using auxiliary energies), is investigated and discussed. It was found out that the degree of dispersion depends on the type of emulsification procedure and decreases in the series: solvent-assisted = ultrasound-assisted (UA-) > air-assisted (AA-) > vortex-assisted (VA) emulsification. The emulsion stability depends on the degree of dispersion and there were 1810 and 2070 s for the most effective emulsification procedures, such us solvent-assisted and ultrasound-assisted emulsification, respectively. A comparison between the sensitivity of the analytical methods (using spectrophotometric determination of the anionic surfactants) and the degree of dispersion have been made. The sensitivity of the methods was ranked as follows: DLLME > UA-LLME > VA-LLME > ***: The degree of dispersion and dispersion stability were studied with the aim to assess the correlations of these parameters with efficiency for the selected analytical application. Our primary goal was to point out the need for similar studies to gain a better understanding of the essence of the DLLME procedure. © 2024, The Authors. All rights reserved.

关键词： Solvents

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Interaction of Crude Oil with Halogen-Free Ionic Liquid-Based Catanionic Surfactants

SSRN

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SSRN 2023年

作者： Sanati, Ali Malayeri, M. Reza Busse, Oliver Weigand, Jan J. Beckmann, Michael Department of Petroleum Engineering Faculty of Petrochemical and Petroleum Engineering Hakim Sabzevari University Sabzevar Iran Department of Chemical Engineering School of Chemical and Petroleum Engineering Shiraz University Shiraz Iran Faculty of Chemistry and Food Chemistry Chair of Inorganic Molecular Chemistry Technische Universität Dresden Dresden01062 Germany Institute of Process Engineering and Environmental Technology Chair of Energy Process Engineering Technische University Dresden Dresden01069 Germany

chemical injection has proved superior performance to improve oil recovery. The injected chemicals are typically designed to participate in interfacial interactions at liquid-liquid and rock-liquid interfaces while having minimum adsorption onto the rock surface. This study endeavors to investigate the interfacial activity of several environmentally-friendly halogen-free ionic liquid-based catanionic surfactants synthesized via an ion exchange reaction between cationic imidazolium-based ionic liquids, [Cnmim][Cl] (n=4,8,12), and anionic surfactants, sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, and dioctyl sodium sulfosuccinate. Results revealed that the catanionic surfactant synthesized with medium-chain ionic liquid (n=8) and sodium dodecyl sulfate exhibited higher interfacial activity demonstrating a minimum crude oil-brine interfacial tension of 0.17 mN/m and wettability alteration index of 0.79. The results of the adsorption study also revealed the adsorption density of 2.19 mg/g onto the dolomite surface for 2000 mg/L of catanionic surfactant in seawater which was considerably lower than cetyltrimethylammonium bromide adsorption (11.55 mg/g) in the control experiment. Finally, the surface energy analysis of liquid-rock interactions was conducted using the concept of work of adhesion to scrutinize the wettability alteration and adsorption processes, where a direct relationship between work of adhesion and adsorption density was proposed. According to the results of this study, medium chain ionic liquid-based catanionic surfactant containing dodecyl sulfate anion, exhibiting excellent interfacial activity and low adsorption tendency onto the dolomite surface, could be considered in future chemical enhanced oil recovery applications. © 2023, The Authors. All rights reserved.

关键词： Ionic liquids

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Conserving elastic turbulence numerically using artificial diffusivity

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Physical Review E 2022年第1期106卷 L013101-L013101页

作者： V. Dzanic C. S. From E. Sauret School of Mechanical Medical and Process Engineering Faculty of Engineering Queensland University of Technology QLD 4001 Australia Department of Chemical Engineering University of Manchester Manchester M13 9PL United Kingdom

To simulate elastic turbulence, where viscoelasticity dominates, numerical solvers introduce an artificial stress diffusivity term to handle the steep polymer stress gradients that ensue. This has recently been shown [A. Gupta and D. Vincenzi, J. Fluid Mech. 870, 405 (2019); V. Dzanic et al., J. Fluid Mech. 937, A31 (2022)] to introduce unphysical artifacts with a detrimental impact on simulations. In this Letter, we propose that artificial diffusion is limited to regions where stress gradients are steep instead of seeking the zero-diffusivity limit. Through the cellular forcing and four-roll mill problem, we demonstrate that this modified artificial diffusivity is devoid of unphysical artifacts, allowing all features of elastic turbulence to be retained. Results are found to conform with direct simulations, reducing the impact of artificial diffusivity from a qualitative scale to a quantitative scale while only requiring a fraction of the numerical resolution.

关键词： Flow instability Non-Newtonian fluids Viscoelasticity Computational complexity Navier-Stokes equation

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Enhanced paracetamol removal using PES/GO mixed matrix membranes: A study on synthesis, characterization, and performance evaluation

Journal of Engineering Research (Kuwait)

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Journal of engineering Research (Kuwait) 2024年

作者： Ntone, Ellora Priscille Ndia Abd Rahman, Sunarti Samah, Rozaimi Abu Alsalhy, Qusay Fadhil Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Al Sultan Abdullah Lebuhraya Persiaran Tun Khalil Yaakob 26300 Gambang Pahang Kuantan Malaysia Membrane Technology Research Unit Chemical Engineering Department University of Technology-Iraq Alsinaa Street 52 Baghdad 10066 Iraq

This research outlines the adsorptive performance of PES/GO-based mixed matrix membranes in the adsorption of paracetamol. Four different concentrations of GO (0, 0.1, 0.4, and 0.5 wt%) were added to the PES polymer solution using the phase inversion method. Characterization of membranes, like Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), and atomic force microscopy (AFM) probe, contact angle, and mechanical properties were performed on the membranes produced. Permeability, paracetamol rejection and flux recovery ratio were also performed. The membrane chemical, morphology, and pore structure were improved after GO was added. GO also upgraded the hydrophilicity of the membranes. In addition, the presence of GO increased the permeability of the membranes and the rejection of paracetamol at pH 7. MMM PES/GO-0.4 was found to be the best membrane with permeability of 11.61 L/m²*** and rejection of 98.53 %. Besides, equilibrium isotherm and kinetic studies revealed that the Langmuir model offered the best fit for isotherm, while pseudo-second order offered the best fit for kinetic. On the other hand, extreme concentration of GO (0.5 wt%) reduced paracetamol rejection, permeability, and flux recovery ratio. The results imply that GO is a sustainable and effective additive for water treatment, and an optimum amount increases the hydrophilicity and permeability of membranes and also enhances the adsorptive properties of the membrane. © 2024 The Authors

关键词： Adsorption Isotherm Adsorption Kinetic Graphene Oxide Mixed Matrix Membrane Paracetamol removal

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Kinetic parameter estimation for drying stage during gasification of empty fruit bunch

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Materials Today: Proceedings 2022年 51卷 1338-1343页

作者： Farah Nadiah Sidek Suriyati Saleh Noor Asma Fazli Abdul Samad Chemical Engineering Department College of Engineering Universiti Malaysia Pahang Lebuhraya Tun Razak 26300 Gambang Pahang Malaysia Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Tun Razak 26300 Gambang Pahang Malaysia

This paper presents kinetic parameter estimation of drying stage at different heating rates for representing drying behavior of empty fruit bunch (EFB) during gasification process. Kinetic constants based on Arrhenius law were estimated by using least-squares method by employing from thermogravimetric analysis data. The results show activation energy estimated are 14.53, 21.12 and 18.82 kJ/mol and pre-exponential factor estimated are 8.74, 236.37 and 275.36 min −1 for 10, 20 and 50 °C/min heating rates. The kinetic constants show good fit with experimental data where standard deviation lesser than 0.05 and R 2 values above 0.98 are obtained indicating drying model is reliable to be used for designing biomass gasification.

关键词： Drying process Drying kinetic parameter Biomass gasification Empty fruit bunch

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