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A comparative study on effectiveness and recyclability of three different deep eutectic solvents for biomass fractionation

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Biomass Conversion and Biorefinery 2025年第9期15卷 13393-13407页

作者： Panakkal, Elizabeth Jayex Cheenkachorn, Kraipat Chuetor, Santi Dasari, Srideep Katam, Keerthi Phusantisampan, Theerawut Cheng, Yu-Shen Sriariyanun, Malinee Department of Chemical and Process Engineering Biorefinery and Process Automation Engineering Center The Sirindhorn International Thai-German Graduate School of Engineering King Mongkut’s University of Technology North Bangkok Bangkok Thailand Department of Chemical Engineering Faculty of Engineering Biorefinery and Process Automation Engineering Center King Mongkut’s University of Technology North Bangkok Bangkok Thailand Department of Chemistry École Centrale School of Engineering Mahindra University Telangana India Department of Civil Engineering École Centrale School of Engineering Mahindra University Telangana India Department of Biotechnology Faculty of Applied Science Biorefinery and Process Automation Engineering Center King Mongkut’s University of Technology North Bangkok Bangkok Thailand Department of Chemical and Materials Engineering National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliu64002 Taiwan

The overuse of non-renewable resources to meet rising energy demands has significantly impacted the environment, necessitating the shift to renewable energy sources. Lignocellulosic biorefineries present a sustainable alternative, producing valuable products. With limited reports on the optimal deep eutectic solvent (DES) pretreatment of Napier grass, this study focuses on optimizing and assessing the recyclability of three different DES pretreatments to enhance sugar and ethanol yields from biomass. Three DES were synthesized by combining choline chloride with lactic acid, glycerol, and urea. The physical properties of these DES were analyzed, followed by the optimization of pretreatment conditions using response surface methodology and one-factor-at-a-time approaches. The optimization considered solid loading (1:20 to 1:5, w/w), temperature (80 °C to 130 °C), and time (0.5 h to 5 h) to maximize sugar concentration. The optimal pretreatments improved cellulose content in the pretreated biomass, enhancing sugar yield in the order: alkaline DES > acidic DES > neutral DES. Ethanol fermentation of pretreated biomass using Saccharomyces cerevisiae showed higher ethanol yields from choline chloride: urea (15.87 g/L), followed by choline chloride: glycerol (14.03 g/L), and choline chloride: lactic acid (13.18 g/L). This study highlights the effectiveness of acidic, alkaline, and polyol-based DES in pretreating biomass, enhancing sugar yield up to 1.6-fold compared to native biomass. Recyclability studies showed decreased efficiency and reduced sugar yield over successive cycles, indicating the need for a purification step. Overall, this research demonstrates the potential of three different DES pretreatments in significantly improving sugar and ethanol yields from Napier grass and underscores the economic viability of DES recycling for industrial applications. These findings could inspire future research in developing advanced techniques for purifying used DES before recy

关键词： Fermentation

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Fragmentation of fuel pellets during transport via a belt conveyor:A design of experiment study

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Particuology 2022年第7期20卷 29-37页

作者： Hamid Gilvari Coen H.H.van Battum Richard Farnish Yusong Pang Wiebren de Jong Dingena L.Schott Section of Transport Engineering and Logistics Department of Maritime&Transport TechnologyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands Wolfson Centre for Bulk Solids Handling Technology Faculty of Engineering&ScienceUniversity of GreenwichUnited Kingdom Section of Large Scale Energy Storage(LSE) Department of Process&EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands

This work investigates the proportion of generated fines in a pilot-scale experiment using a belt conveyor and commercial fuel *** this,a belt conveyor with a length of 3.1 m was used and operated at varying conditions:speeds,percentages of material loading on the belt,two combinations of the inclination angle of the belt and the falling height,and a different number of handling *** considered a design of experiments approach based on response surface methodology to investigate the effect of different conditions on the potential of fines ***,a comparison between the results of the belt conveyor and three common benchmark experimental approaches(tumbling box,rotary impact tester,and mechanical compression test)was *** show that the number of handling steps and the combined effect of drop height and inclination angle directly affected the fines ***,the tested belt speed range and the level of loading were of lower significance.A polynomial quadratic model was derived based on the regression analysis and showed a high accuracy to predict the proportion of ***,the tumbling box method showed good potential to predict the proportion of fines in a belt conveyor when transported several times.

关键词： Fuel pellets Breakage Belt conveyor Transport Design of experiment Box–Behnken design

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Experimental study of coal spontaneous combustion high-temperature region spreading characteristics

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process Safety and Environmental Protection 2023年 180卷 136-147页

作者： Zhao, Jingyu Yang, Xiaocheng Song, Jiajia Zhang, Yongli Shu, Chi-Min School of Safety Science and Engineering Xi'an University of Science and Technology Xi'an710054 China Shaanxi Industrial Process Safety and Emergency Rescue Engineering Technology Research Centre Xi'an University of Science and Technology Xi'an710054 China Department of Safety Health and Environmental Engineering National Yunlin University of Science and Technology 123 University Rd. Section 3 DouliouYunlin64002 Taiwan

To solve the difficult problem of determining the change law of key point temperature and gas during the motion of high temperature area inside the coal mine seam, this study used the simulation platform of coal spontaneous combustion (CSC) development to investigate the temperature, gas concentration, functional group migration, and change rule of key points with layers in the holistic process of high-temperature region (HTR) spreading of Wen-Zhuang coalmine in Shanxi province, China. The analysis involved the dynamic change rule among temperature, oxygen consumption rate, CO, and C2H4. Finally, with the gray correlation method, the changes of the dominant functional groups released by CO and C2H4 were explored, which revealed the transport rule between the functional groups and the regional spreading in the HTR spreading process. The results show that the temperature of coal body and the rate of oxygen consumption gradually decreased with the deepening of coal layers. Among them, as the coal seam burns, the coal body will appear to "collapse", along with the phenomenon of "re-ignition";at the combustion point temperature of each coal layer, the activity of the oxygen-containing functional group was the largest, the activity of hydroxyl group was the smallest, and the activity of aliphatic and aromatic hydrocarbons was similar. Among them, the hydroxyl group, aromatic hydrocarbon, and oxygen-containing functional group had the same trend changing with the deepening of the layers, exhibiting a trend of first decreasing after increasing and later decreasing, and positively correlated with the ignition temperature of each layer. The trend of aliphatic hydrocarbon was opposite to the trend of other functional groups and negatively correlated with the ignition temperature of each layer. The research results of this paper can be used for disaster prevention in the HTR of mine fires, and parameters, such as indicator gases, functional groups and temperature, can be used t

关键词： Coal

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Self-Assured Deep Learning With Minimum Pre-Labeled Data for Wafer Pattern Classification

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IEEE Transactions on Semiconductor Manufacturing 2023年第3期36卷 404-415页

作者： Fan, Shu-Kai S. Tsai, Du-Ming Shih, Ya-Fang National Taipei University of Technology Department of Industrial Engineering and Management Taipei City106344 Taiwan Yuan Ze University Department of Industrial Engineering and Management Taoyuan32003 Taiwan Taiwan Semiconductor Manufacturing Company Ltd. Process Queue Time Control Section Hsinchu300-75 Taiwan

Data quality plays an important role during the training stage of machine/deep learning models. The annotation hinges on the experiences of domain experts. To acquire the expert's knowledge in the context of machine learning, manual data labeling, a tedious and time-consuming task in supervised learning, should be given a top priority. However, the domain experts in the line of plentiful manual annotation may easily get distracted or fatigued after long-time work, causing judgment errors, mislabeling, etc. The pattern recognition of wafer defect map is investigated in this paper, the primary goal of which is to train the convolutional neural network (CNN) model through a very limited number of manually labeled data so that the trained model is capable of performing pseudo labeling. Subsequently, a self-assured adaptive ensemble learner in terms of a series of shallow neural networks is proposed to filter wafer map samples with untrusted pseudo-labels. In the result, the amount of human annotations is significantly reduced by 61% for training a highly accurate classifier. A minimum number of manually labeled data is suggested while the equally high classification performance of wafer defect pattern is maintained. For the evaluation purpose, the proposed self-assured learning is compared with the confidence learning. © 1988-2012 IEEE.

关键词： Neural networks

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Large-scale transportation and storage of wood pellets:Investigation of the change in physical properties

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Particuology 2021年第4期19卷 146-156页

作者： Hamid Gilvari Coen H.H.van Battum Simon A.van Dijk Wiebren de Jong Dingena L.Schott Section of Transport Engineering and Logistics Department of Maritime and Transport TechnologyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands Chemical Services Uniper Benelux NVThe Netherlands Section of Large Scale Energy Storage Department of Process&EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands

The change in physical properties of wood pellets,with a focus on particle size distributions due to pellet breakage and attrition,was studied in a large-scale(∼450 ton/h)transportation *** locations with a high probability of breakage through the whole transportation system were chosen and sampled to study the effect of transportation system design and operation on the mechanical properties of *** density,mechanical durability,moisture content,and particle size distribution of pellets were characterized for each *** of variance showed that there were significant differences between the percentages of small particles(<5.6 mm)in the samples taken at different locations,especially at one with a vertical free fall of 7.8 *** average,this relatively long drop increased the proportion of particles<5.6 mm in the samples from 8.73%to 14.09%,and that of particles<3.15 mm from 4.82%to 9.01%.Moreover,the measurements showed a wide deviation in the mechanical durability values,between a minimum of 90.8%and a maximum of 98.7%,which were not correlated to the sampling points but related to pellet *** can be concluded that pellet transportation systems require more dedicated design strategies to prevent breakage and attrition.

关键词： Wood pellets Large-scale transportation Durability Fines and dust Breakage Mechanical degradation

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Graphene oxide-chitosan composite material as adsorbent in removing methylene blue dye from synthetic wastewater

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Materials Today: Proceedings 2022年 64卷 1587-1596页

作者： Bryan, M.Y.K. Chai, P.V. Law, J.Y. Mahmoudi, E. Department of Chemical & Petroleum Engineering Faculty of Engineering Technology & Built Environment UCSI University Cheras Kuala Lumpur 56000 Malaysia Process Engineering Technology Section Universiti Kuala Lumpur Malaysian Institute of Chemical and Bioengineering Technology Alor Gajah Melaka 78000 Malaysia Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia

Graphene oxide (GO) and graphene oxide-chitosan (GO-C) were synthesized and its performance in removing methylene blue (MB) dye synthetic wastewater were evaluated. Characterization technique such as measurement of zeta potential and FITR were employed to examine the surface potential of the adsorbent and presence of functional group respectively. The adsorption of MB by GO and GO-C was favored at the alkaline condition and lower temperature. The optimum conditions for the adsorption of MB using GO and GO-C were pH 10, a contact time of 50 min, a temperature of 30 °C and a dosage of 1250 mg/L. GO-C demonstrated higher adsorption capacity and dye removal efficacy due to the presence of the secondary adsorption sites that were attributed to the cross-linking of chitosan with GO. GO-C achieved 99.36 % of dye sequestration in MB synthetic dye wastewater after optimization of all parameters had been performed. Spent GO and GO-C were regenerated efficiently using absolute ethanol. GO and GO-C retained 91.79% and 91.90% of MB dye sequestration, respectively, after three cycles of adsorption–desorption and therefore, proving that GO-based adsorbents have an excellent ability to regenerate and reuse in synthetic dye wastewater. © 2022

关键词： Chitosan

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Production of palmitoleic acid by oleaginous yeast Scheffersomyces segobiensis DSM 27193 using systematic dissolved oxygen regulation strategy

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Chinese Journal of Chemical engineering 2023年第1期53卷 324-331页

作者： Xinhai Zhou Dawei Zhou Xinhui Bao Yang Zhang Jie Zhou Fengxue Xin Wenming Zhang Xiujuan Qian Weiliang Dong Min Jiang Katrin Ochsenreither State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211800China Institute of Microbiology Chinese Academy of ScienceBeijing 100101China Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM) Nanjing Tech UniversityNanjing 211800China Institute of Process Engineering in Life Sciences Section Ⅱ:Technical BiologyKarlsruhe Institute of TechnologyFritz-Haber-Weg4Karlsruhe 76131Germany

Palmitoleic acid(POA)can be naturally found only in few oil seeds and has significant applications in pharmaceutical ***,the isolated oleaginous yeast Scheffersomyces segobiensis DSM 27193 was identified with high content of POA in its intracellular lipid(13.80%).In this study,process optimization focused on dissolved oxygen regulation to improve POA production was *** agitation was found to do significant enhancement on POA-rich lipid production than aeration *** the best condition of 1000 r·min^(-1)of agitation and 1 vvm(airvolume/culture volume/min)of aeration,no ethanol was detected during the whole fermentation process,while a dry biomass concentration of 44.80 g·L^(-1)with 13.43 g·L^(-1)of lipid and 2.93 g·L^(-1)of POA was *** analysis revealed that the ethanol synthetic pathway was downregulated under the condition of high agitation,while the expression of the key enzymes responsible for lipid and POA accumulation were enhanced.

关键词： Palmitoleic acid production Scheffersomyces segobiensis Dissolved oxygen Ethanol Bioprocess Bioreactors

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Mixed iridium-nickel oxides supported on antimony-doped tin oxide as highly efficient and stable acidic oxygen evolution catalysts

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Materials Futures 2024年第1期3卷 165-180页

作者： Jonathan Ruiz Esquius Alec P LaGrow Haiyan Jin Zhipeng Yu Ana Araujo Rita Marques Adélio Mendes Lifeng Liu Clean Energy Cluster International Iberian Nanotechnology LaboratoryAv.Mestre JoséVeigaBraga 4715-330Portugal Carbon Science and Technology Institute INCAR-CSICFrancisco Pintado Fe 26Oviedo 33011Spain Scientific Imaging Section Okinawa Institute of Science and Technology Graduate UniversityKunigami-gunOkinawa 904-0412Japan Songshan Lake Materials Laboratory Dongguan 523808People’s Republic of China Laboratory for Process Engineering EnvironmentBiotechnology and EnergyFaculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal Associate Laboratory in Chemical Engineering Faculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal.

Proton exchange membrane(PEM)water electrolysis represents a promising technology for green hydrogen production,but its widespread deployment is greatly hindered by the indispensable usage of platinum group metal catalysts,especially iridium(Ir)based materials for the energy-demanding oxygen evolution reaction(OER).Herein,we report a new sequential precipitation approach to the synthesis of mixed Ir-nickel(Ni)oxy-hydroxide supported on antimony-doped tin oxide(ATO)nanoparticles(IrNiyO_(x)/ATO,20 wt.%(Ir+Ni),y=0,1,2,and 3),aiming to reduce the utilisation of scarce and precious Ir while maintaining its good acidic OER *** tested in strongly acidic electrolyte(0.1 M HClO_(4)),the optimised IrNi1Ox/ATO shows a mass activity of 1.0 mAµgIr^(−1) and a large turnover frequency of 123 s^(−1) at an overpotential of 350 mV,as well as a comparatively small Tafel slope of 50 mV dec^(−1),better than the IrOx/ATO control,particularly with a markedly reduced Ir loading of only 19.7µgIr cm^(−2).Importantly,IrNi1O_(x)/ATO also exhibits substantially better catalytic stability than other reference catalysts,able to continuously catalyse acidic OER at 10 mA cm^(−2) for 15 h without obvious *** in-situ synchrotron-based x-ray absorption spectroscopy confirmed that the Ir^(3+)/Ir^(4+)species are the active sites for the acidic ***,the performance of IrNi1Ox/ATO was also preliminarily evaluated in a membrane electrode assembly,which shows better activity and stability than other reference *** IrNi1Ox/ATO reported in this work is a promising alternative to commercial IrO_(2) based catalysts for PEM electrolysis.

关键词： mixed oxides oxygen evolution reaction polymer electrolyte membrane antimony doped tin oxide membrane electrode assembly

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Research on PSO-SVM base wine grade recognition based on Max-Relevance and Min-Redundancy feature selection

Research on PSO-SVM base wine grade recognition based on Max...

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作者： Yang, Jiaping Ren, Dongping Liu, Yong Zhou, Hailong Sun, Yunquan Institute of Engineering and Applied Technology Fudan University Shanghai China Brewing Process Optimization Department Luzhou Laojiao Co. Ltd. Luzhou China School of Automation and Information Engineering Sichuan University of Science and Engineering Zigong China Teaching and Research Section Artificial Intelligence of Key Laboratory of Sichuan Province Zigong China Research and Development Department Luzhou Zhitong Automation Equipment Co. Ltd. Luzhou China

In response to the challenges inherent in Baijiu classification, characterized by ambiguity and limited methodologies, this study introduces a novel framework for comprehensive Baijiu brewing process management. By integrating mathematical models and machine learning algorithms, our aim is to standardize and enhance the accuracy of the Baijiu brewing process. Through a meticulous analysis of 13 input features using the MRMR algorithm, we identified key variables that significantly influence base wine grades. Subsequently, we compared the efficacy of support vector machine (SVM) algorithms under three kernel functions for base wine grading classification. Additionally, we developed an enhanced particle swarm-support vector machine (IPSO-SVM) algorithm, which incorporates nonlinearly decreasing inertia weights to enhance global and local search capabilities. Evaluation metrics, including accuracy and F1-SCORE, were employed to assess the model's performance. Our experimental results demonstrate that IPSO-SVM significantly improves convergence speed and accuracy, achieving a classification accuracy of 98.31% on the test set with an F1-SCORE of 98.18%. Furthermore, experimental tests conducted at a prominent strong-flavored wine enterprise in China validated the model's effectiveness, revealing no significant difference in grading quality between model and manual Baijiu classification, with a mean error below 1%. This study presents a pioneering approach to digitize and standardize Baijiu classification processes, laying theoretical foundations for the development of intelligent Baijiu classification systems. © 2024 John Wiley & Sons Ltd.

关键词： Wine

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Influence of Halloysite Nanotubes from different deposits on the degradation of organic molecules

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Ceramics International 2025年

作者： Ferlito, Chiara Rizzo, Carla Merir, Roufaida Cavallaro, Giuseppe Lisuzzo, Lorenzo Piccionello, Antonio Palumbo Lazzara, Giuseppe Department of Physics and Chemistry - Emilio Segrè University of Palermo Viale Delle Scienze 17 Palermo90128 Italy Section of Chemistry University of Palermo Palermo90128 Italy Department of Process Engineering Faculty of Technology Setif 1 University Setif19000 Algeria

In this work, Halloysite Nanotubes (HNTs) sourced from different geological deposits (Dragon mine and Latah County in the United States, Matauri Bay in New Zealand and Guelma in Algeria) were studied for the catalytic and photocatalytic degradations of model organic molecules, which are L (+) ascorbic acid and ibuprofen, respectively, in order to assess their distinct impacts on reactions activity. The nanoclays were fully characterized by different techniques (TGA, XRF, XRD, FTIR, ζ-potential, DLS, TEM, etc.) which enlightened differences in the morphological, thermal, chemical properties. As a direct consequence, the degradation of ascorbic was enhanced due to the presence of zinc and manganese oxide in the samples, whereas the photochemical degradation of ibuprofen, which was studied by using a photoreactor, was slowed down or speeded up depending on the particular clay used. These findings are crucial for the plethora of different applications and demonstrates the significant impact HNTs can exert on catalysis. This investigation opens up new perspectives of research for accurately selecting halloysite over other nanoclays. © 2025 The Authors

关键词： Nanoclay

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