Browsing NTNU Open by Author "Seidu, Razak"
Now showing items 1-20 of 60
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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 ... -
A novel simulation model, BK_BiogaSim for design of onsite anaerobic digesters using two-stage biochemical kinetics: Codigestion of blackwater and organic waste
Neba, Fabrice Abunde; Asiedu, Nana Yaw; Morken, John; Ahmad, Addo; Seidu, Razak (Journal article; Peer reviewed, 2020)The design of biogas reactors for blackwater treatment provides special challenges due to significant variability in blackwater characteristics, the complexity of biological systems, and the need, in many cases, to operate ... -
A Tensor Model for Quality Analysis in Industrial Drinking Water Supply System
Wu, Di; Wang, Hao; Seidu, Razak (Chapter, 2019)Drinking Water Supply (DWS) is one of the most critical and sensitive systems to maintain city operations globally. In Europe, the contradiction between the fast growth of population and obsolete urban water supply ... -
Applying hyperparameter optimization and other model adaption methods to tune existing models for microbial pathogens in drinking water supplies
Noem, Niklas (Master thesis, 2018)The collection and analysis of data on the concentration of pathogenic organisms in raw water sources is critical for the optimization of disinfection processes in water treatment plants. Nevertheless, there are no robust ... -
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. ... -
Behandling og utslipp av vaskevann fra den planlagte vegtunnelen Blindheim - Breivika
Hole, Mathilde Sofie Kjellsbøl; Guddal, Odd Inge; Dybvad, John Gunnar (Bachelor thesis, 2024)I denne oppgaven er det undersøkt forskjellige rensemetoder for håndtering av vaskevann fra den planlagte veitunnelen mellom Blindheim og Breivika, med mål om å redusere miljøpåvirkningen og finne den best egnet rensemetoden. ... -
Biodigester Rapid Analysis and Design System (B-RADeS): A candidate attainable region-based simulator for the synthesis of biogas reactor structures
Neba, Fabrice Abunde; Nana, Aseidu; Ahmad, Addo; Morken, John; Østerhus, Stein Wold; Seidu, Razak (Journal article; Peer reviewed, 2020)Anaerobic digesters are seldom designed based on process kinetics, but rather on a combination of hydraulic and organic loading, which may limit operational performance. This study focuses on the incorporation of 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 ... -
Climate-driven QMRA model for selected water supply systems in Norway accounting for raw water sources and treatment processes
Mohammed, Hadi; Seidu, Razak (Peer reviewed; Journal article, 2019)Formulating effective management intervention measures for water supply systems requires investigation of potential long-term impacts. This study applies an integrated multiple regression, random forest regression, and ... -
Comparative predictive modelling of the occurrence of faecal indicator bacteria in a drinking water source in Norway
Mohammed, Hadi; Hameed, Ibrahim A.; Seidu, Razak (Journal article; Peer reviewed, 2018)Presently, concentrations of fecal indicator bacteria (FIB) in raw water sources are not known before water undergoes treatment, since analysis takes approximately 24 h to produce results. Using data on water quality and ... -
Comparison of Adaptive Neuro-Fuzzy Inference System (ANFIS) and Gaussian Process for Machine Learning (GPML) Algorithms for the Prediction of Norovirus Concentration in Drinking Water Supply
Mohammed, Hadi; Hameed, Ibrahim A.; Seidu, Razak (Chapter, 2017)Monitoring of Norovirus in drinking water supply is a complicated, rather expensive, process. Norovirus represent a leading cause of acute gastroenteritis in most developed countries. Modeling of general microbial occurrence ... -
Comparison of Machine Learning Techniques for Structural Condition Assessment of Sewer Network
Nguyen Van, Lam; Tien Bui, Dieu; Seidu, Razak (Peer reviewed; Journal article, 2022)Assessment of sewer condition is one of the critical steps in asset management and support investment decisions; therefore, condition assessment models with high accuracy are important that can help utility managers and ... -
Computational Risk Analysis for Digitizing Sustainable Urban Water Supply Systems
Wu, Di (Doctoral theses at NTNU;2022:13, Doctoral thesis, 2022)The movement of global urbanization is severely challenging many aspects of our modem lives, especially after the 1960s. To address these spawned problems, in 2015, the United Nations published a series of Sustainable ... -
Contribution of Wastewater Irrigation to Soil Transmitted Helminths Infection among Vegetable Farmers in Kumasi, Ghana
Amoah, Isaac Dennis; Abubakari, Amina; Stenström, Thor Axel; Abaidoo, Robert Clement; Seidu, Razak (Peer reviewed; Journal article, 2016)Wastewater irrigation is associated with several benefits but can also lead to significant health risks. The health risk for contracting infections from Soil Transmitted Helminths (STHs) among farmers has mainly been ... -
Deep Autoencoders for Efficient Leakage Diagnosis in Water Distribution Networks
Tornyeviadzi, Hoese Michel (Doctoral theses at NTNU;2024:336, Doctoral thesis, 2024)Leakages are inevitable, and most often persist for extended periods in water distribution networks (WDNs) resulting in substantial volumetric losses and water quality deterioration. Limiting the impact of leakages requires ... -
Dengue-like illness surveillance: a two-year longitudinal survey in suburban and rural communities in the Lao People’s Democratic Republic and in Thailand.
Vannavong, Nanthasane; Seidu, Razak; Stenstrom, Thor Axel; Dada, Nsa; Overgaard, Hans Jørgen (Journal article, 2019)Objective: This study aimed to determine the incidences of dengue-like illness (DLI), dengue virus (DENV) infection, and serotypes and to identify socio-demographical and entomological risk factors of DLI in selected ... -
Design av elektroflokkuleringsreaktor
Tennås, Haakon André Fivelstad; Nystad, Jørgen (Bachelor thesis, 2020)Denne rapporten tar for seg prinsippene bak den elektrokjemiske prosessen, elektroflokkulering. Bakgrunnen for oppgaven var å studere renseeffekten og mulighetene for elektroflokkulering drevet av solkraft, som et rensetrinn ... -
Detection of Water Safety Conditions in Distribution Systems Based on Artificial Neural Network and Support Vector Machine
Mohammed, Hadi; Hameed, Ibrahim A.; Seidu, Razak (Peer reviewed; Journal article, 2019)This study presents the development of artificial neural network (ANN) and support vector machine (SVM) classification models for predicting the safety conditions of water in distribution pipes. The study was based on 504 ... -
Dimensjonering av blågrønne overvannsløsninger Ocean Space Centre, Trondheim
Mo, Kimiya; Nagavelchandran, Kajathiri (Bachelor thesis, 2021)VA-bransjen er i stadig utvikling, og konservativ tankegang blir byttet ut med moderne løsninger. Betongrør skiftes ut med LOD-tiltak, og på den måten kan vi øke kapasiteten på ledningsnettet med tanke på fremtidige ... -
Drikkevannskvalitet i endeledninger
Mikalsen, Lars Marius; Andreassen, Lisa (Bachelor thesis, 2021)Vannforsyningsanleggene i Norge står overfor utfordringer knyttet til et økende vedlikeholdsetterslep, klimaendringer og risiko for vannbårne sykdomsutbrudd. I denne rapporten har vi forsøkt å bidra til en positiv utvikling ...