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Improving the Thermo-Physical Properties of Plam Oil with Zeolite Nanoparticles

Defect and Diffusion Forum 2024年 432卷 115-120页

作者： Assawasaengrat, Pornsawan Limsakul, Thanasuta Bunprasert, Penpichcha Chokelarb, Wasan Sriprom, Pongsert Department of Chemical Engineering School of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand Program of Food Process Engineering School of Food Industry King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

This research aimed to improve the thermo-physical properties of plam oil with NaA zeolite. Palm oil was selected for heating oil due to its high flash point and environmental friendliness compared to synthetic or mineral oil. The effect of NaA zeolite concentration suspended in palm oil was investigated in terms of the specific heat capacity (Cp), viscosity (μ), viscosity index (VI), thermal analysis (TGA) and density (ρ) of palm oil. The NaA zeolite was synthesized by crystallization technique, and X-ray diffraction analysis was performed to determine NaA zeolite crystallinity. The size of NaA zeolite was measured using a particle size analyzer. The average size of the synthesized NaA zeolite was 4767 nm. After grinding process for 180 min, the average size of zeolite decreased to 632 nm. An average 632 nm NaA zeolite particle size was added to palm oil at 0.25, 0.5, 0.75 and 1 wt%. The results showed that when the NaA zeolite concentration increased, the nanofluid’s viscosity at 40 °C and 100 °C was increased. The addition of 1 wt% NaA zeolite resulted in the nanofluid having a maximum viscosity of 41.31 and 8.47 cSt at 40 °C and 100 °C, respectively. The highest viscosity index was 195 cSt when added with 0.5 wt% NaA zeolite. The density of palm oil slightly increased with increasing NaA zeolite concentrations. The specific heat capacity of palm oil increased when NaA zeolite was added. The results showed that NaA zeolite allowed palm oil to store heat energy better than palm oil, enabling it to release and absorb more heat during heat transfer. Thermogravimetric analysis, palm oil initiated to degrade at 263 °C, while the addition NaA zeolite in palm oil indicated that palm oil initiated to degrade at 350 °C. The shift in the degradation curve demonstrated that the nanofluid could withstand high temperatures. Adding NaA zeolite to palm oil showed that palm oil could endure more heat and has a long service life. © 2024 Trans Tech Publications Ltd, Switzerland.

关键词： Palm oil

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Transient CFD Simulation of Vortex Formation in a Stirred Multiphase Flow 6th

Transient CFD Simulation of Vortex Formation in a Stirred Mu...

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6th Multiphase Flow Journey, JEM 2021

作者： Nogueira, André Lourenço Department of Chemical Engineering and Post-Graduation Program in Process Engineering University of the Region of Joinville UNIVILLE Joinville89219-710 Brazil

ISBN: (纸本)9783030934552

The present study simulated the dynamic behavior of the water–air interface in a cylindrical tank stirred mechanically. CFD techniques were applied using the software ANSYS-Fluent. The Volume of Fluid (VOF) model with explicit formulation coupled to the κ - ω SST turbulence model was employed to numerically represent the transient displacement of the water–air interface starting from a situation of stagnated flow. An isothermal operation was considered for the case studied. A simple experimental apparatus composed of a glass vessel filled with dyed water and a mechanical stirrer with a pitched-bladed impeller was used to generate the experimental data of the interface position along the time. The model accuracy was evaluated at stirring rates of 300 and 400 RPM. According to the results, the geometric shape profile of the vortex at the pseudo-stationary state could be reasonably well reproduced by the model. However, the model could not generate accurate results regarding the transient behavior of the vortex formation. Additional strategies should be tested to enhance the model capability to reproduce the transient displacement of the water–air interface due to the rotational flow. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Computational fluid dynamics Stirred tank Two-phase interface

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NEURAL-NETWORK APPROACH TO SENSOR DESIGN

NEURAL-NETWORK APPROACH TO SENSOR DESIGN

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IEEE 1992 ULTRASONIC SYMP

作者： LEC, RM MUSAVI, MT PENDSE, HP AHMED, W Department of Electrical Engineering Industrial Process Control Sensor Systems(IPCoSS) Program University of Maine Orono 04469 United States Department of Chemical Engineering Industrial Process Control Sensor Systems(IPCoSS) Program University of Maine Orono 04469 United States

ISBN: (纸本)0780305620

One of the important tasks in sensor design is the development of a model for a sensing phenomena. Artificial neural networks are ideal for such a task because of their capability for representation of the mapping functions describing the processes and phenomena which are mathematically difficult or even intractable. We examined a radial basis function (RBF) neural network for modeling of acoustical properties of colloidal TiO₂ slurry. The colloidal slurry is a very complex multiphase medium. The RBF network with a set of local Gaussian functions was trained using the data from the earlier developed physical model of TiO₂ slurry. Next the TiO₂ neural model was used for a prediction of the TiO₂ particle size distribution. The resulting prediction accuracies of the RBF network was 99.8% for the data used in the training process and 88% for the data not used in the training. Compared to other available techniques neural networks can offer an effective and time efficient approach for the modeling of complex materials. © 1992 IEEE.

关键词： Titanium dioxide

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MXene:From synthesis to environment remediation

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Chinese Journal of chemical engineering 2023年第9期61卷 260-280页

作者： Ali Nikkhah Hasan Nikkhah Hadis langari Alireza Nouri Abdul Wahab Mohammad Ang Wei Lun Ng law Yong Rosiah Rohani Ebrahim Mahmoudi Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Department of Mechanical and Aerospace Engineering University at BuffaloBuffaloUSA Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsUSA Department of Chemistry and Medicinal Chemistry University at BuffaloBuffaloUSA Chemical and Water Desalination Engineering Program College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates Lee Kong Chian Faculty of Engineering and Science Universiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongKajangSelangorMalaysia

A new burgeoning family of two-dimensional(2D)transition metal carbides/nitrides,better known as MXenes,have received extensive attention because of their distinct properties,such as metallic conductivity,good hydrophilicity,large surface area,good mechanical stability,and *** 40 different MXenes have been synthesized,and dozens more structures and properties have been theoretically ***,the recent progress in MXenes development is not well covered in chronological order based on different *** review article focuses on emerging synthesis methods,the properties of MXenes,and mainly the applications of MXenes and MXene-based material family in environmental remediation,a comprehensive review of gaseous and aqueous pollutants treatment.

关键词： MXene 2D materials Wastewater treatment CO_(2)capture Adsorption Photodegradation

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Potential applications of nanofibrillated cellulose in printing and writing papers

Potential applications of nanofibrillated cellulose in print...

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TAPPI International Conference on Nanotechnology for Renewable Materials 2012

作者： Bilodeau, Michael Bousfield, Douglas Luu, Wing Richmond, Finley Paradis, Mark Process Development Center Department of Chemical and Biological Engineering University of Maine United States Paper Surface Science Program Department of Chemical and Biological Engineering University of Maine United States

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Influence of dope composition of polyethersulfone membrane blend with cellulose nanocrystal and carboxylated multi-walled carbon nanotube on humic acid rejection 6

Influence of dope composition of polyethersulfone membrane b...

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6th National Conference on Postgraduate Research, NCON-PGR 2022

作者： Mahmud, Nor Azura C. Abu Seman, Mazrul Nizam Takriff, Mohd Sobri Ang, Wei Lun Saufi, Syed M. Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Persiaran Tun Khalil Yaakob Gambang Kuantan Pahang26300 Malaysia Chemical and Water Desalination Engineering Program College of Engineering United Arab Emirates Department of Chemical & Process Engineering Faculty of Engineering & Built Environment Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia

A full factorial experimental design was employed to investigate the dope composition of a membrane made of cellulose nanocrystal (CNC), multi-walled carbon nanotube (MWCNT), and polyethersulfone (PES) for its ability to reject humic acid (HA). Four factors were screened, including PES composition, polyvinylpyrrolidone content, CNC content, and carboxylated MWCNT content. The membranes were tested for HA rejection using a 10-ppm aqueous feed solution. The results indicated that the percentage of MWCNT had the most significant impact, contributing 72.31% to the overall contribution. The fabricated membranes exhibited high HA removal capacity of up to 90% for the membrane embedded with MWCNT. The model's predicted values agreed reasonably with the experimental data, indicating the model's validity. This study provides insights into the development of CNC/MWCNT/PES membranes for efficient HA rejection in water treatment applications. © 2022 Elsevier Ltd. All rights reserved.

关键词： Nanoclay

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Table drainage and press dewatering when cellulose nanofibers are applied on the wet end

Table drainage and press dewatering when cellulose nanofiber...

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Paper Conference and Trade Show: Renew, Rethink, Redefine the Future, PaperCon 2017

作者： Bousfield, Doug Paradis, Mark Johnson, Donna Bilodeau, Michael Process Development Center Paper Surface Science Program Department of Chemical and Biological Engineering University of Maine OronoME United States

ISBN: (纸本)9781510847286

Before cellulose nanofibers (CNF) can be used in paper furnishes or as a surface layer, the drainage characteristics of pulps that contain CNF must be determined. In addition, the influence of CNF addition on pressing needs to be understood. CNF was added to pulp furnishes at various levels and also applied as a curtain to the just formed web on the drainage table on a pilot paper machine. The couch solids and the final press solids, for various nip pressures is obtained. The final press solids is also predicted from an equation in the literature. In some cases, CNF addition is found to increase press solids instead of decreasing it.

关键词： Presses (machine tools)

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Barrier coatings for packaging papers 13

Barrier coatings for packaging papers

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13th TAPPI Advanced Coating Fundamentals Symposium 2014

作者： Richmond, Finley Bousfield, Doug Spender, Jonathan Bilodeau, Mike Paper Surface Science Program United States Process Development Center University of Maine Department of Chemical and Biological Engineering United States

ISBN: (纸本)9781510801295

• Blade coating works well and gives better values than rod coating at low coat weights. (no wire marks to link to defects). • 50 % zein and 50% soy protein provided good barrier properties. • The addition of pigment helps enhance barrier properties, if not at too high a level. PVC must be less than 40 • Films that are brittle likely generate fine cracks that result in poor performance. • Diffusion mechanisms are likely to be less important than capillary flow phenomena related to barrier properties. • Removing all pores, even pores less than 0.1 microns in diameter, is critical. • Barrier pigments are good at low PVC.

关键词： Coatings

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Preparation of Activated Carbon from Durian Rind with Difference Activations and Its Optimization

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Journal of Renewable Materials 2021年第2期9卷 311-324页

作者： Pongsert Sriprom Warawut Krusong Pornsawan Assawasaengrat Program of Food Process Engineering Faculty of Agro-IndustryKing Mongkut’s Institute of Technology Ladkrabang10520BangkokThailand Program of Fermentation in Food industry Faculty of Agro-IndustryKing Mongkut’s Institute of Technology Ladkrabang10520BangkokThailand Department of Chemical Engineering Faculty of EngineeringKing Mongkut’s Institute of Technology Ladkrabang10520BangkokThailand

Durian rind wastes are an important raw material for activated carbon production due to their renewable sources and low-cost *** efficiency of increasing surface area and the quantity of oxygen groups on the surface of activated carbon were studied for the preparation of activated *** preparation of activated carbon has been studied with the different methods as follows:activation by acid,activation by base,hydrothermal and activation by acid,and hydrothermal and activation by *** results showed that hydrothermal and activation by acid had high iodine number which was chosen to determine the optimum condition for activated carbon *** optimum condition for preparation of durian rind activated carbon was studied by Box-Behnken ***/water ratio,solid/acid ratio and temperature were chosen as the important parameters for achieving the optimum reaction *** reaction products were analyzed by iodine *** on the results,the optimum condition for preparation of durian rind activated carbon was predicted using *** maximum iodine number of 626.47 mg/g was expected at the optimum condition:solid/water ratio(1:175,g/mL),solid/acid ratio(1:23,g/mL)and temperature(500℃).The preparation of durian rind activated carbon at the optimal condition was carried;the percentages of iodine number achieved(666.73±6 mg/g)were close to the maximum predicted value(666.73 mg/g),thus verifying the *** the optimum condition,the functional group on surface of durian rind activated carbon was characterized by *** result showed that the oxygen content on surface was increased in the form of carbonyl and sulfonyl group.

关键词： Durian rind activated carbon hydrothermal iodine number

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Input/output Linearization Control Technique for Anaerobic Digestion Reactor with Recirculation

Input/output Linearization Control Technique for Anaerobic D...

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2019 Research, Invention, and Innovation Congress, RI2C 2019

作者： Srisuddee, Sura Sriariyanun, Malinee Panjapornpon, Chanin Tawai, Atthasit Chemical and Process Engineering Program Siringhorn International Thai-German Graduate School of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Chemical Engineering Faculty of Engineering Kasetsart University Bangkok Thailand

Anaerobic digestion (AD) process has been generally applied in factories for wastewater treatment and energy recovery. For the AD processes, the continuously stirred tank reactor (CSTR) with recirculation are typically applied in industries for methane production from wastewater treatment. Since the recycle stream affects the inlet concentration of the reactor, the control performance of traditional PI and PID controllers used to manipulate control actuators may be limited. Additionally, the process control loops related to biochemical reactions are generally employed the operational experiences without process dynamic consideration. A control system based on input/output (I/O) linearization control technique for an anaerobic digestion (AD) process was developed in this work. The control system applied the concept of the I/O linearization technique, which followed dynamic behaviors of the reactor with a two-step (acidogenesis-methanogenesis) kinetic model. The volatile fatty acid (VFA) concentration was regulated by manipulation of the dilution rate to achieve the requested trajectories. Control performances of the closed-loop system were investigated by a simulation under servo and regulatory problems. The simulation results showed that the developed control scheme successfully forced the controlled output to achieve the desired set points and handled the introduced control problems. © 2020 The Authors, published by EDP Sciences.

关键词： Wastewater treatment

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