Tim A. G. Langrish

Techno-Economic Analysis for the Costs of Drying Chickpeas: An Example Showing the Trade-Off Between Capital and Operating Costs for Different Inlet Air Temperatures

Tim A. G. Langrish, Shu Cheng

This study investigates the implementation of new drying schedules for chickpeas, a significant pulse, incorporating a techno-economic analysis. The research also explores the reduction in anti-nutritional factors, such as trypsin inhibitors, through fluidized-bed drying with an air recycling system. The processing cost …

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A Review of the Treatments to Reduce Anti-Nutritional Factors and Fluidized Bed Drying of Pulses

Shu Cheng, Tim A. G. Langrish

Pulses, rich in proteins, dietary fibers, and essential nutrients, play an important role in human nutrition, especially as alternatives to animal proteins. However, the presence of anti-nutritional factors (ANFs), such as trypsin inhibitors, chymotrypsin inhibitors, phytic acid, and tannins, can hinder nutrient …

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Multifilm Mass Transfer and Reaction Rate Kinetics in a Newly Developed In Vitro Digestion System for Carbohydrate Digestion

Yongmei Sun, Jingying Cheng, Shu Cheng, Tim A. G. Langrish

Multifilm mass transfer theory has been used in conjunction with developing a new in vitro starch digestion model and applied to assessing starch digestion kinetics. One significance of this research is that this in vitro model has similar dynamics, such as similar …

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Circular Systems Engineering: Integrating Process Systems Engineering and Circular Economy for Sustainable Transitions

Brent Richmond Young, Dominic Bui Viet, Timothy Gordon Walmsley, Nam Nghiep Tran et autres

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Energy and exergy analyses of a solar assisted milk powder spray dryer

Zuhair Qamar, Anjum Munir, Waseem Amjad, Tim A. G. Langrish et autres

• Comprehensive thermal analysis for optimizing spray drying processes when integrated with solar energy for better efficiency. • Heating power consumption: 0.768 kW (electrical) and 0.327 kW (solar), with 30% solar energy contribution. • Polystyrene sheets on SAH sides reduced heat losses …

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The Application of Pinch Technology to a Novel Closed-Loop Spray Drying System with a Condenser and Reheater

Zexin Lei, Thomas O’Neill, Tim A. G. Langrish

Spray drying is an energy-intensive process in industrial use, making energy recovery a critical focus for improving overall efficiency. This study investigates the potential of integrating heat-recovery systems, including an innovative air reheater, into a closed-loop spray-drying unit to maximise energy savings. …

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Mass Transfer Resistance and Reaction Rate Kinetics for Carbohydrate Digestion with Cell Wall Degradation by Cellulase

Yongmei Sun, Shu Cheng, Jingying Cheng, Tim A. G. Langrish

This paper introduces an enzymatic approach to estimate internal mass-transfer resistances during food digestion studies. Cellulase has been used to degrade starch cell walls (where cellulose is a significant component) and reduce the internal mass-transfer resistance, so that the starch granules are …

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Energy and exergy analysis for a laboratory-scale closed-loop spray drying system: Experiments and simulations

Zexin Lei, Tim A. G. Langrish

Improving exergy efficiency is crucial to the drying process, especially in reducing costs and carbon dioxide emissions. A closed-loop drying system with a condenser-reheater system was built and analyzed using a numerical simulation to explore the optimal drying conditions, such as inlet …

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Applications of augmented reality (AR) in chemical engineering education: Virtual laboratory work demonstration to digital twin development

Zelin Zhou, Farshad Oveissi, Tim A. G. Langrish

With advances in information technologies, virtual technologies have become a viable option for chemical engineering educators. Although traditional teaching methods remain effective, they have many limitations when presenting complex phenomena. Virtual technologies like Augmented Reality (AR) have shown great potential as an …

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Effect of Dry and Wet Fractionation on Nutritional and Physicochemical Properties of Faba Bean and Yellow Pea Protein

Ziqi Li, Valeria Messina, Daniel J. Skylas, Peter Valtchev et autres

ABSTRACT Plant‐based proteins continue to gain popularity as a sustainable alternative to animal proteins due to their nutritional, functional and health benefits. Dry and wet fractionation methods are increasingly being used for the production of value‐added pulse protein ingredients. The objective of …

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Professor Roger Brian Keey (1933–2023)

Tim A. G. Langrish, Shusheng Pang

It is of great sadness to report that Emeritus Professor Roger Keey passed away on October 9th, 2023 at the age of 89. Professor Keey was well-known for his pioneering work on exploring and establi...

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Comparing mass transfer and reaction rate kinetics in starch hydrolysis during food digestion

Yongmei Sun, Zelin Zhou, Chao Zhong, Zexin Lei et autres

Abstract This study demonstrates evidence that the mass transfer process of an enzyme (a biocatalyst) is the rate‐limiting step in the starch hydrolysis reaction during food digestion. The significance of this work has been to compare the reaction rate of starch hydrolysis …

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