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International Conference on Wider-Uptake of Water Resource Recovery from Wastewater Treatment, ICWRR 2024

作者： Grzegórska, Anna Zielińska-Jurek, Anna Department of Process Engineering and Chemical Technology Faculty of Chemistry Gdańsk University of Technology G. Narutowicza 11/12 Gdańsk80-233 Poland

ISBN: (纸本)9783031633522

Water contamination with active pharmaceutical ingredients (APIs) is a pressing environmental issue due to the potential impact on fauna, flora, and human health. To address this problem, we propose the use of photocatalysis as an effective method for the degradation of emerging contaminants present in water. Our research focuses on the application of MXene compounds in the photocatalytic degradation of APIs such as carbamazepine, acetaminophen, and ibuprofen. These substances are classified as persistent organic pollutants and emerging contaminants, which are among the pharmaceuticals commonly found in aquatic ecosystems worldwide. In the present work, the Ti3C2Tx was used as a co-catalyst for photocatalytic processes and as a precursor to obtain TiO2/Ti3C2 composites. Additionally, we propose methods for modifying TiO2/Ti3C2 composites with metal particles, such as iron and copper, and spinel ferrite of MnFe2O4 to improve their physicochemical properties. The surface modification of the composites with metals resulted in higher photocatalytic activity in the degradation of APIs under UV-vis irradiation. Moreover, the introduction of magnetic MnFe2O4 nanoparticles enabled the effective separation of the photocatalyst after the degradation process. Finally, our research demonstrates the potential for synergism between photocatalysis and the activation of peroxymonosulfate (PMS) with Cu or MnFe2O4, leading to the production of highly reactive sulfate radicals and enhanced degradation of APIs. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Physicochemical properties

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The Influences of the Fluid Initial Temperature and Fluid Flow Rate to the Boiling Heat Transfer: A Short Review 3

The Influences of the Fluid Initial Temperature and Fluid Fl...

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3rd International Postgraduate Conference on Mechanical engineering 2024, IPCME 2024

作者： Shaidan, Faiz Basrawi, Firdaus Yudin, Ahmmad Shukrie Md Azman, Nurul Aini Mohd Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pekan Pahang26600 Malaysia Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Gambang Pahang26300 Malaysia

Recently, Low Temperature Vacuum Drying with induced Nucleation Boiling (LTVD-NB) has been studied for water reduction methods. However, low dewatering temperature led to longer drying process. Hence, to improve the LTVD-NB dewatering performance, the study on Boiling Heat Transfer (BHT) such as parameters, conditions and phenomena that may affect the heat transfer in boiling process should be understood further. Currently, some of parameters such as dewatering temperature, surface roughness, and initial water content effects in LTVD-NB have been discovered. However, the effect of the fluid initial temperature and hot water flow rate to the BHT in LTVD-NB is still unclarified. Hence, the objective of this paper is to review and examine the influences of fluid initial temperature and the effect of fluid flow rate to the BHT. In general, the result shows that the higher fluid initial temperature and flow rate significantly enhanced the BHT. As a result, the BHT in LTVD-NB system can be improved which will significantly improve the dewatering process of honey in the future. © Published under licence by IOP Publishing Ltd.

关键词： Low temperature drying

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Effect of torrefaction on thermal degradation and functional group of oil palm solid waste

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Materials Today: Proceedings 2022年 57卷 1248-1255页

作者： Chang, Siaw Sang Sambeth, Sharwin Kumar Abdul Samad, Noor Asma Fazli Saleh, Suriyati Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Pahang Gambang26300 Malaysia Chemical Engineering Department College of Engineering Universiti Malaysia Pahang Pahang Gambang26300 Malaysia

This study investigated the influence of the torrefaction process on thermal degradation and chemical changes of oil palm solid waste (OPSW) through thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR) analysis. Palm kernel shell (PKS) showed the highest mass and energy yield after the torrefaction process. Furthermore, torrefied PKS (TPKS) showed the highest heating value (23.10 MJ/kg). Weight loss in active pyrolysis stages was reduced after the torrefaction, thus indicates the lignocellulosic component decomposition. OPSW showed a reduction in hydroxyl group (−OH) after torrefaction resulting in hydrophobicity characteristic. Torrefaction has significantly enhanced the characteristics of OPSW as solid biofuel. © 2021

关键词： Biofuels

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Opportunities of biodiesel industry waste conversion into value-added products

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Materials Today: Proceedings 2022年 57卷 1014-1020页

作者： Chilakamarry, Chaitanya Reddy Sakinah, A.M. Mimi Zularisam, A.W. Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Gambang Pahang Kuantan26300 Malaysia Faculty of Civil Engineering Technology Universiti Malaysia Pahang Gambang Pahang Kuantan26300 Malaysia

The global attention for the alternative fuel to decrease the dependence on carbon-biased fossil fuels and reduce the carbon footprint led to biodiesel production. Crude glycerol generated as a major by-product of the biodiesel industry. The vast amounts of crude glycerol pose an environmental threat. Valorisation of industrial waste is the big challenge to provide a significant economic advantage by the sustainable approach. Hence the crude glycerol needs to be valorised through the biotechnology process into value-added products and gives biodiesel producers more revenue. The biodiesel industrial by-product glycerol waste serves as raw material to convert into several products like citric acid, succinic acid, 1,3-propanediol, butanol, and ethanol. The present manuscript focuses on the significance of crude glycerol from the biodiesel industry as a stable feedstock that undergoes biotransformation to value-added products by microorganisms. © 2021

关键词： Biodiesel

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Low-Cost Battery Capacity Tester with Online Monitoring for Educational Use 12

Low-Cost Battery Capacity Tester with Online Monitoring for ...

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12th International Electrical engineering Congress, iEECON 2024

作者： Phantanaikasem, Pongpavee Pannawan, Akekachai Jamroen, Chaowanan Suttikul, Thitiporn King Mongkut's University Of Technology North Bangkok Division Of Instrumentation And Automation Engineering Technology Faculty Of Engineering And Technology Rayong Campus Rayong21120 Thailand King Mongkut's University Of Technology North Bangkok Division Of Chemical Process Engineering Technology Faculty Of Engineering And Technology Rayong Campus Rayong21120 Thailand

ISBN: (纸本)9798350383591

Lithium-ion batteries (LIBs) are conventionally used as power supplies of portable electric devices (such as mobile phones and laptops) due to their small sizes, affordability, and long cycle lives. However, the capacity of LIBs gradually decreases from their rated value (referred to as capacity fading) depending on the number of charge cycles. Inaccurate LIB capacity estimation leads to imprecise state-of-charge (SoC) estimation, negatively impacting energy management capabilities. Conventional battery capacity testers presently on the market are expensive and lack Internet of Things (IoT) capabilities for storage and monitoring. Therefore, this study presents a low-cost battery capacity tester with online monitoring for educational purposes. This tester offers two discharging levels of 0.5 A and 1 A. Additionally, a temperature sensor has been integrated to monitor the battery's temperature and prevent overheating. The tester employs an ESP32 module as the main microcontroller, and the Arduino IoT Cloud system is used to store measurement data in a cloud database. The voltage and current during testing can be conveniently displayed on a computer or mobile phone through an associated graphical user interface (GUI). Two LIBs were subjected to testing at both discharging levels to validate the capabilities of the tester. The experimental results revealed a maximum error of 1.7% and a minimum error of 0.25%. © 2024 IEEE.

关键词： Internet of things

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Production of Bricks Using Spent Diatomaceous Earth Used in Brewing Industry 12th

Production of Bricks Using Spent Diatomaceous Earth Used in ...

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12th International Conference on Structural engineering and Construction Management, ICSECM 2021

作者： Nanayakkara, Rumesh Gunathilaka, Chamila Department of Chemical and Process Engineering Faculty of Engineering University of Peradeniya Peradeniya20400 Sri Lanka Department of Nano Science Technology Faculty of Technology WUSL Kuliyapitiya60200 Sri Lanka

ISBN: (纸本)9789811928857

In breweries, diatomaceous earth (DE) is used as a filter material. Spent diatomaceous earth (SDE), as an industrial waste, is mainly generated once this DE pores are filled with impurities generated from brewing industries. After the final filtering process, this spent DE is disposed into dumping areas leads to environmental pollution. Therefore, as a remedy for that problem, SDE can be adulterate with clay to produce bricks. Mixing clay with SDE leads to an increase in the quality of the bricks. Also, the incorporation of SDE for brick production can reduce the adverse effects on the environment by reducing the quantity of clay excavated and discharged SDE. This study was conducted to analyze the suitability of using SDE as a secondary raw material for brick production. The chemical characteristics of SDE were analyzed using both XRF and TGA tests. Bricks containing 0, 5, 10, and 15 wt% of SDE were sun-dried and fired at 950 ℃ for 6 h with suitable temperature ramp. The obtained results reveal that compressive and bending strengths were increased with increasing the SDE weight percentage. Highest compressive strength (4.78 MPa) and bending strength (0.57 MPa) were recorded for the sample prepared with 15 wt% of SDE. Furthermore, the addition of SDE is worth as no significant differences in physical properties are observed. To produce SDE incorporated bricks on a large scale, further research and development by considering, the technical, economic, and environmental aspects of SDE are recommended. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Brick

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Synthesis and applications of inverse vulcanized polysulfides from bio-crosslinkers

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Materials Today: Proceedings 2022年 57卷 1095-1100页

作者： Nayeem, Abdullah Ali, Mohd Faizal Shariffuddin, Jun Haslinda College of Engineering Universiti Malaysia Pahang Gambang263000 Malaysia Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Gambang26300 Malaysia

Elemental sulfur, an industrial by-product from petroleum industries worldwide, has drawn sufficient attention to researchers. The limited scope of application has caused a colossal surplus amount of elemental sulfur stacked in the open places. Several polysulfide synthesis processes, including condensation, free-radical process, and ionic copolymerization technique, were used but resulted in unstable products. A new polymerization technique, termed inverse vulcanization, has been introduced, which enabled different types of crosslinkers for polysulfide production and their scopes to explore numerous applications. The current paper concisely reviews the evolution and advances of using vegetable oils and plant extracts in inverse vulcanization to produce polysulfides. The alluring applications and properties have also been discussed briefly. © 2021

关键词： Sulfur

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Identification, Quantification, and Elimination of NOx and NH3 Impurities for Aqueous and Li-Mediated Nitrogen Reduction Experiments

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ACS ENERGY LETTERS 2023年第8期8卷 3614-3620页

作者： Izelaar, Boaz Ripepi, Davide van Noordenne, Dylan D. Jungbacker, Peter Kortlever, Ruud Mulder, Fokko M. Large Scale Energy Storage Process and Energy Department Faculty of Mechanical Maritime and Materials Engineering Delft University of Technology 2628 CB Delft The Netherlands Materials for Energy Conversion and Storage Chemical Engineering Department Faculty of Applied Sciences Delft University of Technology 2629 HZ Delft The Netherlands

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Evaluation of biohydrogen production from rice straw hydrolysate via Clostridium sp. YM1: In-lab fermentation and techno-economic study

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International Journal of Hydrogen Energy 2025年 138卷 1228-1238页

作者： Mahmod, Safa Senan Krisna, Rohindran Shukor, Hafiza Abdul, Peer Mohamed AL-Rajabi, Maha Mohammad Atabani, A.E. Luthfi, Abdullah Amru Indera Gunny, Ahmad Anas Nagoor Faculty of Chemical Engineering & Technology Universiti Malaysia Perlis UniMAP Perlis Arau02600 Malaysia Centre of Excellence for Biomass Utilization Universiti Malaysia Perlis UniMAP Perlis Arau02600 Malaysia Micron Memory Malaysia Sdn Bhd Bandar Cassia Penang 14110 Malaysia Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia UKM Selangor Bangi43600 Malaysia Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia Green Technology Research Center Yuan Ze University Taiwan

This study investigates the potential of rice straw (RS) to be used as a feedstock for the production of biohydrogen (BioH2). To simplify the structure of the RS, thermochemical treatment is applied using HNO3 and NaOH at different concentrations. At a concentration of 1% (v/v) nitric acid (HNO3), the highest sugar concentration achieved was 27.73 g/L. This condition was utilized in dark fermentation with Clostridium sp. YM1 at 30 °C in an anaerobic environment, resulting in a biohydrogen production that surpasses the yield of the control sample by 27%. Furthermore, supplementation of 20 mg of ferrous and magnesium ions enhanced the biohydrogen yield (HY), which achieved 1.12 molH₂/molsugar and 1.19 molH₂/molsugar, respectively. This study demonstrated that butyric acid fermentation was the main pathway for Clostridium sp. YM1 to produce BioH2 from HNO3-treated RS. The findings were further evaluated for their economic profitability using SuperPro designer in batch production mode to treat 100 kgRS/batch that demonstrated the feasibility of the project with payback period (PBP), and net present value (NPV) of 3.78 years and USD 4,722,929, respectively. The study herein provides valuable insights and recommendations aimed at enhancing the feasibility of the conversion of RS into BioH2, thereby advancing the potential for sustainable bioenergy production. © 2024

关键词： Metal ions

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Special Issues of chemical and process engineering In Memory of Professor Jerzy Baldyga

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2021年第2期42卷 73-74页

作者： Molga, Eugeniusz Faculty of Chemical and Process Engineering Warsaw University of Technology Poland

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