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11th International Conference on Simulation and Modelling in the Food and Bio-Industry, FOODSIM 2020

作者： Angarano, Valeria Smet, Cindy Akkermans, Simen Watt, Charlotte Chieffi, Andre Van Impe, Jan F.M. BioTeC+ Chemical and Biochemical Process Technology and Control Department of Chemical Engineering KU Leuven Gebroeders De Smetstraat 1 GhentB-9000 Belgium Procter&Gamble Newcastle United Kingdom

ISBN: (纸本)9789492859136

Biofilms cause health issues and are responsible for several problems within the food industry, households and clinical environments. An alternative approach against biofilms, not involving chemicals, is based on light. In this work violet (400 nm), blue (420 nm), green (570 nm), yellow (584 nm) and red (698 nm) light was used against Pseudomonas fluorescens and Staphylococcus epidermidis biofilms. Biofilms grown on a polystyrene surface were irradiated by Light-Emitting Diode (LED) arrays (from 30 min to 4h). Different irradiances were investigated (2.5, 25, 50 and 100% of the maximum irradiance). Plate counting was performed to quantify the surviving cells. The kinetic parameter estimation was performed using the Geeraerd et al. (2000) model. Outcomes demonstrated that violet light could successfully inactivate P. fluorescens and S. epidermidis (up to 6.80 and 3.69 log10 reductions, respectively), while blue light was effective only against P. fluorescens (when 100% of maximum irradiance is used). © 2020 EUROSIS. All Rights Reserved.

关键词： Biofilms

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Cultivation and monitoring of a gut microbiota model system 11

Cultivation and monitoring of a gut microbiota model system

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11th International Conference on Simulation and Modelling in the Food and Bio-Industry, FOODSIM 2020

作者： Akritidou, Theodora Smet, Cindy Akkermans, Simen Van Impe, Jan F.M. Department of Chemical Engineering KU Leuven BioTeC - Chemical and Biochemical Process Technology and Control CPMF2 Flemish Cluster Predictive Microbiology in Foods Gebroeders de Smetstraat 1 GhentB-9000 Belgium

ISBN: (纸本)9789492859136

Gut microbiota is often characterized as an essential "organ" for the host. Several previous studies have corroborated its profound effect on human metabolism and health, either via biomedical studies or by means of in vitro digestion model systems. The latter, though, focus mainly on the investigation of the intestinal microflora of the large intestine. Hence, information regarding the microbial community of the small intestine is limited, a region with significant contribution to human digestion and host immune responses against invading pathogens. This research opted for the development of a microbial model system that accounts for the gut microbiota of the distal part of the small intestine, i.e. ileum. As such, five bacterial species have been selected, shaping a consortium of representative bacteria of this region that belong to the genera Bacteroides, Bifidobacterium, Lactobacillus, Streptococcus and Escherichia. Furthermore, a cultivation and measurement protocol are developed for this complex bacterial population. This is implemented with the construction of a general anaerobic medium (BHIS) for microbial cultivation and with the selection of suitable selective and differential media to monitor each individual species of the microbial model system, respectively. Results showed that BHIS was highly efficient in displaying individual and collective behavior of the gut microbiota species, rendering an inexpensive and easy-to-prepare cultivation alternative for gut microbiota. Likewise, the results were quite satisfactory with respect to the selective media. © 2020 EUROSIS. All Rights Reserved.

关键词： Bacteria

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Extremum Seeking control of a Three-Stage Anaerobic Digestion Model ⁎

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IFAC-PapersOnLine 2020年第2期53卷 16773-16778页

作者： Mihaela Sbarciog Alain Vande Wouwer Jan Van Impe Laurent Dewasme BioTeC+ Chemical and Biochemical Process Technology and Control Department of Chemical Engineering KU Leuven Belgium Automatic Control Laboratory University of Mons Belgium

Anaerobic digestion systems are of increasing interest as they are able to produce biogas while treating waste/wastewater. However, their dynamics is complex and not fully understood, which makes their operation and optimization difficult. In this paper, an extremum seeking control algorithm is applied to a three-stage anaerobic digestion system to maximize the outflow rate of methane. In a first stage, the stability analysis of the three-stage model is performed, which provides valuable information on the type of steady states the system possesses, the occurrence of the optimal steady state and good practices to successfully operate the system. In a second stage, an extremum seeking controller, which employs a recursive least-squares algorithm for block-oriented models, is implemented and tested on the anaerobic digestion model. Simulation results show that the proposed controller globally stabilizes the process dynamics at the optimal operating point. Compared to the classical extremum seeking algorithms, the proposed technique allows for a faster convergence, in an imposed time period assigned by the designer.

关键词： Recursive Least Squares Real-Time Optimization Wiener-Hammerstein models process control Biogas Production

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Green Manufacturing Evaluation of Light-Emitting Diodes (Led) Lamps Production: Resource and Environmental Assessment

SSRN

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SSRN 2024年

作者： Gao, Wenfang Zeng, Xianju Chen, Fangfang Pan, Anyu Yang, Feiming Wang, Yuting Li, Huajie Ren, Zhijun Zhang, Guangming Sun, Zhi Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China National Key Laboratory of Biochemical Engineering Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341119 China Xiamen Guangpu Electronics Ltd. Xiamen361000 China Kopper Chemical Industry Corp. Ltd. Chongqing401254 China

Light-emitting diode (LED) lamps have become the mainstream lamps of the lighting industry, with practical significance such as energy savings and reducing greenhouse gas emissions. However, few studies have focused on the resource and environmental evaluation of LED lamp production processes. In this research, a green manufacturing evaluation was developed by combining resource criticality and environmental impact assessment by analysing eight typical LED lamp production processes. For resource criticality assessment, a metal criticality assessment method was built considering the special industrial parameters such as CPS (the technical level of the production plant), where the ordinary street lamp (OSL) had the most lamp evaluation index based on the higher resource consumption and Ga and In were the most critical metals. For environmental impact assessment, it was concluded that the green bulb lamp (GBL) was the most environmentally friendly lamp, and the OSL had the most serious impact on the environment. Under the comprehensive evaluation, the GBL was the best lamp because its structure was simple and the quality of the material was smaller, while the OSL was the worst lamp due to the higher quality of the material. With the green manufacturing evaluation with resource criticality assessment and environmental impact assessment, the LED lamp production process can be effectively evaluated, which can provide a basis for the material evaluation and cleaner production. © 2024, The Authors. All rights reserved.

关键词： Light emitting diodes

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Multi-scale modelling approaches for microbial dynamics in the context of climate change: A needs analysis 11

Multi-scale modelling approaches for microbial dynamics in t...

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11th International Conference on Simulation and Modelling in the Food and Bio-Industry, FOODSIM 2020

作者： Katsini, Lydia Akkermans, Simen Bhonsale, Satyajeet Roufou, Styliani Griffin, Sholeem Valdramidis, Vasilis Van Impe, Jan F.M. BioTeC+ Chemical and Biochemical Process Technology and Control Chemical Engineering Department KU Leuven Gebroeders De Smetstraat 1 Gent9000 Belgium Department of Food Sciences and Nutrition University of Malta MSD 2080 Malta Department of Food Sciences and Nutrition Centre of Molecular Medicine and Biobanking University of Malta MSD 2080 Malta

ISBN: (纸本)9789492859136

Climate change is likely to have considerable impact on food safety, both direct and indirect, placing public health at risk. Predicitve microbiology is linked to food safety being an essential element in quantitative microbial risk assessment. This paper focuses on the key parts, which require increased emphasis during the development of a multi-scale model to describe microbial dynamics in the context of climate change. The need for spatio-temporal data, complex computational tools and clear model development goals for preserving food safety in face of climate change are highlighted. © 2020 EUROSIS. All Rights Reserved.

关键词： Climate change

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Iron-based materials functionalized with carbon and phosphorus recovered from sludge enhanced the formation of stable minerals to passivate lead and chromium in wastewater and soil

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Chemosphere 2024年 359卷 142340页

作者： Wang, Liyan Jia, Bojie Teng, Zedong Cao, Hao Miao, Yanli Guo, Huiyuan Li, Tinggang School of Chemical and Environmental Engineering China University of Mining and Technology Beijing100083 China CAS Key Laboratory of Green Process and Engineering Beijing Engineering Research Centre of Process Pollution Control National Engineering Research Center of Green Recycling for Strategic Metal Resources Innovation Academy for Green Manufacture Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Key Laboratory of Rare Earths Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341119 China State Key Laboratory of Biochemical Engineering Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

The bioaccumulation and toxicity of heavy metals are serious threats to human activities and ecological health. The exploitation of environmentally friendly passivated materials is major importance for the remediation of heavy metal contaminated soil. This research developed a new type of environmental functional material with a core-shell structure, which is an iron-based material functionalized with phosphorus and carbon from sludge for heavy metal pollution remediation. The results indicated that the C/P@Fe exhibits excellent heavy metal removal ability, and the maximum removal rates of the two heavy metals in simulated wastewater could reach 100% under optimum reaction conditions. It also effectively converts the labile Cr/Pb into the stable fraction after 28 days of incubation, which increased the maximum residual fraction percentage of Cr and Pb by 32.43% and 160% in soil. Further analysis found that the carbon layer wrapped around the iron base could improve the electron transport efficiency of reducing iron, phosphorus and ferrum could react with heavy metal ions to form stable minerals, such as FeCr2O4, FeO·Cr2O3, Pb5(PO4)3OH, PbCO3, 2PbCO3·Pb(OH)2 and PbS, after reacting with C/P@Fe. The study demonstrated that the Iron-based materials functionalized with carbon and phosphorus from sludge provided a more efficient way to remove heavy metals. © 2024 Elsevier Ltd

关键词： Lead compounds

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Comparative studies on fouling of homogeneous anion exchange membranes by different structured organics in electrodialysis

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Journal of Environmental Sciences 2019年第3期31卷 218-228页

作者： Zhijuan Zhao Shaoyuan Shi Hongbin Cao Yujiao Li Bart Van der Bruggen Division of Environment Technology and Engineering CAS key Laboratory of Green Process and Engineering Beijing Research Center of Process Pollution Control State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Chemical Engineering KU Leuven Zhengzhou Institute of Emerging Industrial Technology Faculty of Engineering and the Built Environment Tshwane University of Technology

Five negatively charged organic compounds with different structures, sodium methane sulfonate(MS), sodium benzene sulfonate(BS), sodium 6-hydroxynaphthalene-2-sulfonate(NSS), sodium dodecyl sulfate(SDS), and sodium dodecyl benzene sulfonate(SDBS), were used to examine the fouling of an anion exchange membrane(AEM) in electrodialysis(ED),to explore the effect of molecular characteristics on the fouling behavior on the AEM and changes in the surface and electrochemical properties of the AEM. Results indicated that the fouling degree of the AEM by the different organics followed the order:SDBS > SDS > NSS > BS > MS. SDBS and SDS formed a dense fouling layer on the surface of the AEM, which was the main factor in the much more severe membrane fouling, and completely restricted the transmembrane ion migration. The other three organics caused fouling of the AEM by adsorption on the surface and/or accumulation in the interlayer of the AEM, and exhibited almost no influence on the transmembrane ion migration. It was also concluded that the organics with benzene rings caused more severe fouling of the AEM due to the stronger affinity interaction and steric effect between the organics and the AEM compared with organics with aliphatic chains.

关键词： Anion exchange membrane Different structural organics Membrane fouling Property characterization Fouling mechanism analyses

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Effect of high-frequency atmospheric plasma on the growth of mung bean sprouts 11

Effect of high-frequency atmospheric plasma on the growth of...

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11th International Conference on Simulation and Modelling in the Food and Bio-Industry, FOODSIM 2020

作者： Kozak, Dmytro S. Rodriguez, Estefanía Garcia Blundell, Renald Tsepelev, Vladimir S. Akkermans, Simen Van Impe, Jan F.M. Valdramidis, Vasilis Gatt, Ruben Chemical and Biochemical Process Technology and Control BioTeC+ Department of Chemical Engineering KU Leuven Belgium Metamaterials Unit Faculty of Science University of Malta Msida Malta 19 Mira Street Ekaterinburg620002 Russia Department of Food Sciences and Nutrition Faculty of Health Sciences University of Malta Msida Malta Department of Physiology and Biochemistry Faculty of Medicine and Surgery University of Malta Msida Malta Centre for Molecular Medicine Bio Banking University of Malta Msida Malta

ISBN: (纸本)9789492859136

A high-frequency AC plasma was applied during the germination of mung bean at extreme conditions in a closed system. A new laboratory design for emitting high-frequency plasma in the form of a single electrode directly in a closed system has been successfully tested. The current results demonstrated that plasma had both a growth promoting and inhibiting effect. Even though the growth of sprouts was mostly inhibited in the current study, it is expected that the plasma generation can be tuned in such a way that it has an overall positive effect on sprout growth. © 2020 EUROSIS. All Rights Reserved.

关键词： Germination

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Cold plasma: a promising technology for improving the rheological characteristics of food

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Critical Reviews in Food Science and Nutrition 2022年第32期63卷 11370-11384页

作者： Kaavya, R. Pandiselvam, R. Gavahian, Mohsen Tamanna, R. Jain, Surangna Dakshayani, R. Khanashyam, Ananda Chandra Shrestha, Pratiksha Kothakota, Anjineyulu Arun Prasath, V. Mahendran, R. Kumar, Manoj Khaneghah, Amin Mousavi Nayik, Gulzar Ahmad Dar, Aamir Hussain Uddin, Jalal Ansari, Mohammad Javed Hemeg, Hassan A. Department of Dairy and Food Science South Dakota State University BrookingsSD United States Physiology Biochemistry and Post-Harvest Technology Division ICAR-Central Plantation Crops Research Institute Kerala Kasaragod India Department of Food Science National Pingtung University of Science and Technology Pingtung Taiwan Innovation and Technology Kraft Heinz Company ChicagoIL United States Department of Biotechnology Mahidol University Bangkok Thailand Department of Food Processing and Quality Control ThassimBeevi Abdul Kader College for Women Tamil Nadu Ramanathapuram India Department of Food Science and Technology Kasetsart University Bangkok Thailand Babarmahal Nepal Kerala Thiruvananthapuram India Department of Food Process Engineering National Institute of Technology Odisha Rourkela India Tamil Nadu Thanjavur India Chemical and Biochemical Processing Division ICAR-Central Institute for Research on Cotton Technology Maharashtra Mumbai India São Paulo Campinas Brazil Department of Food Science and Technology Government Degree College Shopian Jammu & Kashmir Srinagar India Department of Food Technology Islamic University of Science and Technology Kashmir Jammu & Kashmir Awantipora India Department of Pharmaceutical Chemistry College of Pharmacy King Khalid University Abha Saudi Arabia Department of Botany Hindu College Moradabad [Mahatma Jyotiba Phule Rohilkhand University Uttar Pradesh Bareilly India Department of Medical Laboratory Technology College of Applied Medical Sciences Taibah University Medina Saudi Arabia

At the beginning of the 21st century, many consumers show interest in purchasing safe, healthy, and nutritious foods. The intent requirement of end-users and many food product manufacturers are trying to feature a new processing technique for the healthy food supply. The non-thermal nature of cold plasma treatment is one of the leading breakthrough technologies for several food processing applications. The beneficial response of cold plasma processing on food quality characteristics is widely accepted as a substitution technique for new food manufacturing practices. This review aims to elaborate and offer crispy innovative ideas on cold plasma application in various food processing channels. It highlights the scientific approaches on the principle of generation and mechanism of cold plasma treatment on rheological properties of foods. It provides an overview of the behavior of cold plasma in terms of viscosity, crystallization, gelatinization, shear stress, and shear rate. Research reports highlighted that the cold plasma treated samples demonstrated a pseudoplastic behavior. The published literatures indicated that the cold plasma is a potential technology for modification of native starch to obtain desirable rheological properties. The adaptability and environmentally friendly nature of non-thermal cold plasma processing provide exclusive advantages compared to the traditional processing technique. © 2022 Taylor & Francis Group, LLC.

关键词： Viscosity

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Modelling microbiological and quality marker responses to enhance cold plasma cereal grain processing 10

Modelling microbiological and quality marker responses to en...

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10th International Conference on Simulation and Modelling in the Food and Bio-Industry, FOODSIM 2018

作者： Ziuzina, Dana Los, Agata Akkermans, Simen Boehm, Daniela Cullen, Patrick J. Van Impe, Jan F.M. Bourke, Paula Plasma Research Group School of Food Science and Environmental Health Dublin Institute of Technology Ireland BioTeC+ - Chemical and Biochemical Process Technology and Control Department of Chemical Engineering KU Leuven Gent Belgium

ISBN: (纸本)9789492859013

This study employed response surface modelling to establish key process parameters for high voltage dielectric barrier discharge (HVDBD) atmospheric cold plasma (ACP) decontamination of cereal grains that were in alignment with maintenance of product critical quality parameters. Response surface modelling of experimental data probed the key factors in relation to microbial control and seed germination promotion. Depending on treatment parameters and target intrinsic characteristics, significant reduction of microbial contamination on wheat and barley grains was achieved. The efficacy of the plasma treatment (20 min) against microorganisms decreased in the following order: E. coli > P. verrucosum (spores) > B. atrophaeus (vegetative cells) > B. atrophaeus (endospores). Germination percentage of samples treated for up to 5 min was not affected, but it was decreased after 20 min of treatment. Overall, ACP was effective for cereal grain decontamination, however the diverse native micro-flora may pose greater resistance to the closed surface decontamination approach than the individual fungal or bacterial challenges. © 2018 EUROSIS-ETI.

关键词： Germination

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