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Akademický článek

Simultaneous Optimization of an IGCC Process with Equation-Oriented Methods

Autor: Keat Ping Yeoh, Chi Wai Hui

Publikováno v: Chemical Engineering Transactions, Vol 88 (2021)

Simultaneous optimization of process flowsheets using equation-oriented (EO) methods is a promising alternative to simulation studies. With the use of EO methods, simultaneous optimization of all process units including heat integration can be perfor

Externí odkaz: https://doaj.org/article/6015464e0cb6445baf166b3e1cea2173

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Akademický článek

Rigorous NLP distillation models for simultaneous optimization to reduce utility and capital costs

Autor: Keat Ping Yeoh, Chi Wai Hui

Publikováno v: Cleaner Engineering and Technology, Vol 2, Iss , Pp 100066- (2021)

Two non-linear programming (NLP) models with rigorous stage-by-stage MESH calculations are proposed based on the concept of bypass efficiency. The models can be used to simultaneously optimize the number of stages, feed stage location and operating p

Externí odkaz: https://doaj.org/article/557b91c586774915ae14ff2dcee4bf43

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Akademický článek

Non-Linear Programming Distillation Model for Simultaneous Process Optimisation

Autor: Keat Ping Yeoh, Chi Wai Hui

Publikováno v: Chemical Engineering Transactions, Vol 81 (2020)

Distillation columns are prevalent process units used to purify chemicals. However, they consume significant amounts of energy for heating and cooling. A rigorous non-linear programming (NLP) distillation model where mass, equilibrium, summation and

Externí odkaz: https://doaj.org/article/a2faf158346a481fb624aba276de4045

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Akademický článek

Shortcut Distillation Model for Heat Integration

Autor: Keat Ping Yeoh, Pui Ying Lee, Chi Wai Hui

Publikováno v: Chemical Engineering Transactions, Vol 74 (2019)

Distillation is a common process unit that requires substantial energy input. The energy input can be reduced by applying heat integration methods to the distillation system. A shortcut distillation model that does not require rigorous stage-by-stage

Externí odkaz: https://doaj.org/article/bb33925c41ea4bc78e3b658022b78aff

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Akademický článek

Modelling and Optimization of Multistream Heat Exchanger with Area Targeting

Autor: Matteo Cassanello, Keat P. Yeoh, Yingzong Liang, Malvin S. Pamudji, Chi-Wai Hui

Publikováno v: Chemical Engineering Transactions, Vol 70 (2018)

In this work, a new multi-objective mixed integer nonlinear programming (MINLP) model based on Pinch Technology principles is presented. The proposed framework is able to simultaneously maximize the heat recovery, minimize the total heat exchange sur

Externí odkaz: https://doaj.org/article/7f35c8441ea341d1b162b533fc4275b0

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Removal of toxic cadmium using a binary site ion‐exchange material derived from waste printed circuit boards

Autor: Meng Xu, Chao Ning, Gordon McKay, Hamish R. Mackey, Haya Alyasi, Chi Wai Hui

Publikováno v: Journal of Chemical Technology & Biotechnology. 96:3282-3292

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67b8437eaad81a1f45f097670dd8c4c7
https://doi.org/10.1002/jctb.6866

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Modelling of Harvesting Techniques for the Evaluation of the Density of Microalgae

Autor: Ergys Pahija, Pui Ying Lee, Chi-Wai Hui, Gürkan Sin

Publikováno v: Applied biochemistry and biotechnology. 194(12)

A better estimation of the density of cells has great relevance in the design of harvesting units. In the case of microalgae, the density is a function of the internal composition, which in turn is affected by external environmental conditions. The d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::132d2fc4dd012cafc2fe825ae71f989e
https://pubmed.ncbi.nlm.nih.gov/35867278

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A practical approach for modelling the growth of microalgae with population balance equation

Autor: Ergys Pahija, Chi Wai Hui

Publikováno v: Pahija, E & Hui, C-W 2021, ' A Practical Approach for Modelling the Growth of Microalgae with Population Balance Equation ', New Biotechnology, vol. 62, pp. 40-48 . https://doi.org/10.1016/j.nbt.2021.01.001

Microalgae are versatile microorganisms with applications in food, energy and fine chemicals, among others. Modelling the dynamics of microalgae inside a photobioreactor is a convenient and inexpensive way to determine the concentration of cells over

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66d6de3b558f628ee5ba6ea30b54b366
https://doi.org/10.1016/j.nbt.2021.01.001

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