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2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology

作者： Gabbott, I.P. Barrera-Medrano, D. Reynolds, G.K. Bonsall, J. Hounslow, M.J. Salman, A.D. Particle Products Group Department of Chemical and Process Engineering University of Sheffield Mappin Street Sheffield SI 3JD United Kingdom Unilever Research and Development Port Sunlight Quarry Road East Bebington Wirral CH63 3 JW United Kingdom

Work on a system using calcium carbonate powder and polyethylene glycol binders in high shear granulation has shown that in general a trade-offline exists between the compression strength of granules and their dissolution rate. In this work the effect of binder ratio on granule strength, dissolution, composition and structure is discussed. The strength of granules was found to increase with increasing binder-to-solids ratio (10 to 14%), while the dissolution rate was found to decrease, along with the average granule binder content. This is thought to be the result of increased granule consolidation with increasing binder ratio, brought about by increased lubrication between the powder particles. This is supported by structure analysis using x-ray tomography imaging and optical microscopy. Both methods show that there is a clear increase in the level of PEG binder available at the granule periphery. Granules made with high binder ratios (16%) were found to be much more variable in their characteristics and properties.

关键词： Binders

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Production of biohydrogen from hydrolyzed bagasse with thermally preheated sludge

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International Journal of Hydrogen Energy 2009年第18期34卷 7612-7617页

作者： Chairattanamanokorn, Prapaipid Penthamkeerati, Patthra Reungsang, Alissara Lo, Yung-Chung Lu, Wei-Bin Chang, Jo-Shu Environmental Technology Unit Department of Environmental Science Kasetsart University Bangkok Thailand Research Group for Development of Microbial Hydrogen Production Process from Biomass Thailand Department of Biotechnology Khon Kaen University Khon Kaen Bangkok Thailand Department of Chemical Engineering National Cheng Kung University Tainan Taiwan Department of Cosmetic Science Chung Hwa University of Medical Technology Tainan Taiwan Sustainable Environment Research Center National Cheng Kung University Tainan Taiwan

Production of biohydrogen from dark fermentation is an interesting alternative to producing renewable fuels because of its low cost and various usable substrates. Cellulosic content in plentiful bagasse residue is an economically feasible feedstock for biohydrogen production. A statistical experimental design was applied to identify the optimal condition for biohydrogen production from enzymatically hydrolyzed bagasse with 60-min preheated seed sludge. The bagasse substrate was first heated at 100 °C for 2 h and was then hydrolyzed with cellulase. Culture of the pretreated bagasse at 55 °C provided a higher H2 production performance than that obtained from cultures at 45 °C, 65 °C, 35 °C and 25 °C. On the other hand, the culture at pH 5 resulted in higher H2 production than the cultures at pH 6, pH 4 and pH 7. The optimal culture condition for the hydrogen production rate was around 56.5 °C and pH 5.2, which was identified using response surface methodology. Moreover, the pretreatment of bagasse under alkaline conditions gave a thirteen-fold increase in H2 production yield when compared with that from preheatment under neutral condition. © 2009 Professor T. Nejat Veziroglu.

关键词： Lignocellulose

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Adsorption kinetics, isotherms and desorption studies of mercury from aqueous solution at different temperatures on magnetic sodium alginate-thiourea microbeads

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Environmental Nanotechnology, Monitoring and Management 2019年 12卷

作者： Patiño-Ruiz, D. Bonfante, H. De Ávila, G. Herrera, Adriana Doctorate in Engineering Program Nanomaterials and Computer Aided Process Engineering Research Group Universidad de Cartagena Cartagena Colombia Chemical Engineering Program Process Design and Biomass Use Group Universidad de Cartagena Cartagena Colombia Chemical Engineering Program Nanomaterials and Computer Aided Process Engineering Research Group Universidad de Cartagena Cartagena Colombia

Magnetite (Fe3O4) nanoparticles and thiourea were employed to modify sodium alginate microbeads for adsorption of Hg ions from aqueous solution. The Fe3O4 nanoparticles were initially synthesized by co-precipitation m... 详细信息

Magnetite (Fe₃O₄) nanoparticles and thiourea were employed to modify sodium alginate microbeads for adsorption of Hg ions from aqueous solution. The Fe₃O₄ nanoparticles were initially synthesized by co-precipitation method. Fourier infrared spectroscopy (FTIR) determined the presence of hydroxyl, carboxyl, thiol and amine functional groups in the microbead molecular structure. According to BET and BJH methods, the MAT microbeads had surface area, pore diameter and volume of 7.3472 m²/g, 12.9058 nm and 0.0255 cm³/g, respectively. Scanning electron microscopy (SEM) equipped with an EDX system allowed to obtain morphological information of the MAT microbeads, in which was observed the main elements introduced by the presence of thiol groups and iron ions. The result of saturation magnetization (M_s) performed by a vibrating sample magnetometer (VSM), is common for superparamagnetic materials, which slightly decreased due to the low amount of magnetic nanoparticles in the microbead structure. Adsorption kinetics showed that highest rate was about 98% in the first 20 min, and then decreased to zero. Pseudo-first order was the model that better fitted to experimental data with a value about 2.6 mg/g. Meanwhile, adsorption isotherm was better described using Langmuir model, suggesting that the Hg ions adsorption was mainly given by electrostatic interaction and chemical bonding among the functional groups, as well as the formation of a saturated layer onto the microbead surface occupying all the available sites. © 2019

关键词： Adsorption Magnetic nanoparticles Mercury Sodium alginate microbeads Thiourea

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Removal enhancement of persistent basic fuchsin dye from wastewater using an eco-friendly, cost-effective Fenton process with sodium percarbonate and waste iron catalyst

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Environmental Science and Pollution research 2024年第31期31卷 43673-43686页

作者： Aouni, Saoussen Imene Ghodbane, Houria Merouani, Slimane Lakikza, Imane Boublia, Abir Yadav, Krishna Kumar Djelloul, Chawki Albakri, Ghadah Shukri Elboughdiri, Noureddine Benguerba, Yacine Laboratory of Physics for Matter and Radiation Mohamed Cherif Messadia-Souk Ahras University P.O. Box 1553 Souk Ahras41000 Algeria Laboratory of Environmental Process Engineering Department of Chemical Engineering Faculty of Process Engineering University Salah Boubnider-Constantine 3 P.O. Box 72 Constantine25000 Algeria Département de Génie des Procédés Faculté de Technologie Université Ferhat ABBAS Sétif-1 Sétif19000 Algeria Faculty of Science and Technology Madhyanchal Professional University Ratibad Bhopal462044 India Environmental and Atmospheric Sciences Research Group Scientific Research Center Al-Ayen University Thi-Qar Nasiriyah64001 Iraq Laboratory of Reaction Engineering Faculty of Mechanical Engineering and Process Engineering USTHB Algiers Algeria Department of Teaching and Learning College of Education and Human Development Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Chemical Engineering Department College of Engineering University of Ha’il Ha’il81441 Saudi Arabia Chemical Engineering Process Department National School of Engineers Gabes University of Gabes Gabes6029 Tunisia Ferhat Abbas Setif 1 University Setif Algeria

Abstract: In this comprehensive investigation, we evaluate the efficacy of the Fenton process in degrading basic fuchsin (BF), a resistant dye. Our primary focus is on the utilization of readily available, environmentally benign, and cost-effective reagents for the degradation process. Furthermore, we delve into various operational parameters, including the quantity of sodium percarbonate (SPC), pH levels, and the dimensions of waste iron bars, to optimize the treatment efficiency. In the course of our research, we employed an initial SPC concentration of 0.5 mM, a pH level of 3, a waste iron bar measuring 3.5 cm in length and 0.4 cm in diameter, and a processing time of 10 min. Our findings reveal the successful elimination of the BF dye, even when subjected to treatment with diverse salts and surfactants under elevated temperatures and acidic conditions (pH below 3). This underscores the robustness of the Fenton process in purifying wastewater contaminated with dye compounds. The outcomes of our study not only demonstrate the efficiency of the Fenton process but highlight its adaptability to address dye contamination challenges across various industries. Critically, this research pioneers the application of waste iron bars as a source of iron in the Fenton reaction, introducing a novel, sustainable approach that enhances the environmental and economic viability of the process. This innovative use of recycled materials as catalysts represents a significant advancement in sustainable chemical engineering practices. Graphical abstract: (Figure presented.). © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Iron

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Developing a free-fall reactor for rice straw fast pyrolysis to produce bio-products

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Egyptian Journal of Petroleum 2018年第4期27卷 1305-1311页

作者： Shoaib, A.M. El-Adly, R.A. Hassanean, M.H.M. Youssry, A. Bhran, A.A. Petroleum Refining and Petrochemical Engineering Department Faculty of Petroleum and Mining Engineering Suez University Suez Egypt Process Design & Development Department Egyptian Petroleum Research Institute Cairo Egypt Chemistry Department Faculty of Science Taif University Saudi Arabia Suez Oil Petroleum Company Suez Egypt Chemical Engineering Department College of Engineering Al Imam Mohammad Ibn Saud Islamic University IMSIU Al Riyadh Saudi Arabia

Recently, the world energy demand is increasing due to the growing world population. Accordingly, many research works are directed toward the new resources of renewable energy in order to compensate the shortage in petroleum based products. The use of biomass as a source for renewable energy is of growing importance. One of the most problematic agriculture wastes in Egypt is rice straw which is generated in huge amounts over a limited harvesting period. In this study the main objective is to develop and design a new rice straw fast pyrolysis reactor that improves some inefficiencies in traditional reactors while maintaining high bio-oil yields. To accomplish this target, a laboratory scale plant with a free-fall reactor was designed to avoid lack of moving parts;Compared it with other plants, the designed under investigation plant has the advantage of simple design. Two basic principles were combined in the design of the free-fall reactor;the first principle dealt with the particle heating rate, while the second considered the particle's free-fall velocity. Based on this developed and designed free-fall reactor, the fast pyrolysis process of rice straw was carried out at temperatures ranging from 450 °C to 700 °C. The obtained bio-products from this process are liquid bio-oil, bio char and non-condensable gases. The characterization and chemical composition of the bio-oil and non-condensable gases were determined, respectively. It was concluded that the above mentioned free-fall reactor can be used for producing useful bio-products from rice straw and sharing to solve the most problematic agriculture waste. © 2018 Egyptian Petroleum research Institute

关键词： Fast pyrolysis Free fall reactor Pyrolysis products Rice straw

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Towards online optimisation of solid oxide fuel cell performance: Combining deep learning with multi-physics simulation

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Energy and AI 2020年第1期1卷 11-21页

作者： Haoran Xu Jingbo Ma Peng Tan Bin Chen Zhen Wu Yanxiang Zhang Huizhi Wang Jin Xuan Meng Ni Department of Chemical Engineering Loughborough UniversityLoughboroughUnited Kingdom National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230026China Institute of Deep Earth Sciences and Green Energy Shenzhen UniversityShenzhen 518060China Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’anChina Department of Mechanical Engineering Imperial College LondonLondon SW72AZ United Kingdom Department of Building and Real Estate Building Energy Research GroupThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Environmental Energy Research Group Research Institute for Sustainable Urban Development(RISUD)The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

The use of solid oxide fuel cells(SOFCs)is a promising approach towards achieving sustainable electricity pro-duction from *** utilisation of the hydrocarbons and biomass in SOFCs is particularly attractive owing to their wide distribution,high energy density,and low *** long-term operation of SOFCs using such fuels remains difficult owing to a lack of an effective diagnosis and optimisation system,which requires not only a precise analysis but also a fast *** this study,we developed a hybrid model for an on-line analysis of SOFCs at the cell *** model combines a multi-physics simulation(MPS)and deep learning,overcoming the complexity of MPS for a model-based control system,and reducing the cost of building a database(compared with the experiments)for the training of a deep neural *** maximum temperature gradient and heat generation are two target parameters for an efficient operation of *** results show that a precise predic-tion can be achieved from a trained AI algorithm,in which the relative error between the MPS and AI models is less than 1%.Moreover,an online optimisation is realised using a genetic algorithm,achieving the maximum power density within the limitations of the temperature gradient and operating *** method can also be applied to the prediction and optimisation of other non-liner,dynamic systems.

关键词： Solid oxide fuel cell Multi-physics simulation Artificial intelligence Deep neural network Hybrid model On-line optimisation

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Flow Chemistry and Continuous processing: More Mainstream than Ever!

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ORGANIC process research & development 2024年第5期28卷 1269-1271页

作者： Cole, Kevin P. Jaworski, Jonathan N. Kappe, C. Oliver Kobayashi, Shu Maguire, Anita R. O'Kearney-McMullan, Anne Pesti, Jaan A. Synthetic Molecule Design and Development Lilly Research Laboratories Eli Lilly and Company Indianapolis Indiana 46285 United States Process Chemistry Development Takeda Pharmaceuticals International Co. 35 Landsdowne Street Cambridge Massachusetts 02139 United States Institute of Chemistry University of Graz Heinrichstrasse 28 A-8010 Graz Austria Department of Chemistry School of Science The University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan School of Chemistry and School of Pharmacy Analytical and Biological Chemistry Research Facility SSPC the SFI Research Centre for Pharmaceuticals University College Cork Cork T12 K8AF Ireland Chemical Development Pharmaceutical Technology & Development Operations AstraZeneca Macclesfield SK10 2NA United Kingdom Pharma Resource Group Inc. 880 Enterprise Drive Royersford Pennsylvania 19468 United States

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MODELING THE STABILITY OF CEPHAMYCIN-C - PRODUCING N-LACTAMDURANS DURING CONTINUOUS CULTURE

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BIOTECHNOLOGY PROGRESS 1985年第4期1卷 231-236页

作者： KIRPEKAR, AC KIRWAN, DJ STIEBER, RW Department of Chemical Engineering University of Virginia Charlottesville VA 22901 Abhay C. Kirpekar received a Ph.D. degree in Chemical Engineering from the University of Virginia in May 1985. This paper is a part of his dissertation for which experiments were carried out at Merck Chemical Manufacturing Division of Merck & Co. Inc. where he is currently employed. His interests include gas-liquid mass transfer scale-up and design of fermentors Merck Chemical Manufacturing Division Elkton VA 22827 Robert W. Stieber received a Ph.D. degree from the Department of Microbiology and Public Health at Michigan State University in 1979. He then joined the Merck Chemical Manufacturing Division of Merck & Co. Inc. His main interests are in fermentation research process development and production

The reversion of a cephamycin C-producing strain of Nocardia lactamdurans to a non-producing variant under continuous culture conditions was examined at dilution rates between 0.025 and 0.045 hr-1. A model incorporating the influence of revertants, when present in the culture in significant numbers, was necessary to adequately describe the dynamics of the reversion process.

关键词： BIOTECHNOLOGY

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Techno-economic assessment of FT unit for synthetic diesel production in existing stand-Alone biomass gasification plant using process simulation tool 21

Techno-economic assessment of FT unit for synthetic diesel p...

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21st International Congress of chemical and process engineering, CHISA 2014 and 17th Conference on process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2014

作者： Hunpinvo, Piyapong Narataruksa, Phavanee Tungkamani, Sabaithip Pana-Suppamassadu, Karn Chollacoop, Nuwong Department of Chemical and Process Engineering Technology Faculty of Engineering and Technology King Mongkut's University of Technology North Bangkok 1518 Pracharat Sai 1 Road Bang-Sue Bangkok10800 Thailand Department of Industrial Chemistry Faculty of Applied Science King Mongkut's University of Technology North Bangkok Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design STRI Building King Mongkut's University of Technology North Bangkok Floor P and 7th Room 702 Thailand National Science and Technology Development Agency Thailand

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Robust Predictive PI Controller Based on First-Order Dead Time Model

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IFAC Proceedings Volumes 2008年第2期41卷 5808-5813页

作者： F. Arousi U. Schmitz R. Bars R. Haber Dept. of Automation and Applied Informatics Budapest University of Technology and Economics MTA-BME Control Research group Dept. of Advanced Process Control Shell Rheinland Refinery Köln/Wesseling Germany Inst. of Chemical Process Engineering and Plant Design University of Applied Science Cologne Germany

Predictive control algorithms compute the manipulated variable minimizing a cost function considering expected future errors. PI control algorithms can be equipped with predictive properties. Simple predictive control algorithms are derived using approximation of an aperiodic process by a first-order model with dead time. Applying a noise model the robustness properties of the algorithm are enhanced considering plant-model mismatch. The noise filter is considered as a design parameter. Simulation examples demonstrate the behavior of the predictive PI algorithm and the robustifying effect of the noise filter.

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