Blar i NTNU Open på forfatter "Addo, Ahmad"
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A coupled modeling of design and investment parameters for optimal operation of methane bioreactors: Attainable region concept approach
Neba Abunde, Fabrice; Nana, Aseidu; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak (Journal article; Peer reviewed, 2020)Current practice to design methane bioreactors does not consider all degrees of freedom simultaneously, which raises question of global optimality. This study presents a model-based design framework, which simultaneously ... -
Attainable regions and fuzzy multi-criteria decisions: Modeling a novel configuration of methane bioreactor using experimental limits of operation
Neba, Fabrice Abunde; Asiedu, Nana Yaw; Addo, Ahmad; Seidu, Razak (Journal article; Peer reviewed, 2020)This study sets out to develop an approach that couples attainable regions and fuzzy multicriteria decision methods for modeling optimal configurations of multistage digesters without using a kinetic model of the process. ... -
Can the operating limits of biogas plants operated under non-isothermal conditions be defined with certainty? Modeling self-optimizing attainable regions.
Neba, Fabrice Abunde; Tornyeviadzi, Hoese Michel; Asiedu, Nana Y.; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak (Peer reviewed; Journal article, 2020)Uncertainty in operating parameters such as temperature undermines the reliability of using kinetic models in performance projections for plants operated under ambient non-isothermal conditions. This study develops a ... -
Modeling, optimization and kinetic analysis of the hydrolysis process of waste cocoa pod husk to reducing sugars
Mensah, Mary; Asiedu, Nana Yaw; Neba, Fabrice Abunde; Amaniampong, Prince Nana; Boakye, Patrick; Addo, Ahmad (Peer reviewed; Journal article, 2020)Lignocellulosic biomass represents an important chemical resource. In the quest for the heightened interest for waste management and the successful utilization of solid waste materials into useful products, cocoa pod husk, ... -
Simulation of two-dimensional attainable regions and its application to model digester structures for maximum stability of anaerobic treatment process
Neba, Fabrice Abunde; Asiedu, Nana Yaw; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak (Journal article; Peer reviewed, 2019)Unlike high-rate anaerobic digesters that employ some mechanism to retain microbial sludge mass, low-rate systems use sufficiently long hydraulic retention times to ensure process stability, which becomes economically ... -
Theoretical formulations and simulations of one-dimensional inhibition kinetics of ethanologenic microorganisms in batch fermenters
Bamaalabong, Peter P.; Asiedu, Nana Y.; Neba, Fabrice Abunde; Baidoo, Francesca; Addo, Ahmad (Peer reviewed; Journal article, 2021)The utilization of bio-based technology for energy has piqued researchers' curiosity around the world. As a result, bioethanol fermentation has been a hot topic of research for many scientists since it uses less energy and ... -
Use of attainable regions for synthesis and optimization of multistage anaerobic digesters
Neba, Fabrice Abunde; Asiedu, Nana Yaw; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak (Journal article; Peer reviewed, 2019)Anaerobic digestion involves multiple reactions, and when operated as a single stage, the process conditions are only suitable for all the reactions with no particular reaction being optimized, hence limiting overall ...