Browsing Brage NMBU by Author "Seidu, Razak"
Now showing items 1-12 of 12
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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 (Peer reviewed; Journal article, 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) -
Causal factors and health risks associated with faecal contamination and Aedes aegypti infestation in household water storage in Laos and Thailand
Vannavong, Nanthasane (PhD Thesis;2017:89, Doctoral thesis, 2017)The storage of water within the household environment is commonly practiced in many countries in South-east Asia including Laos and Thailand. The practice if not properly managed, can lead to diarrhoea and dengue as a ... -
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 (Peer reviewed; Journal article, 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 ... -
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 ... -
Disentangling the risk factors and health risks associated with faecal sludge and wastewater reuse in Ghana
Seidu, Razak (PhD Thesis;2010:17, Doctoral thesis, 2010)The reuse of faecal sludge and wastewater in agriculture is widespread worldwide. However, the practice is also associated with significant microbial health risks especially in countries where systems for the treatment and ... -
Effects of socio-demographic characteristics and household water management on Aedes aegypti production in suburban and rural villages in Laos and Thailand
Vannavong, Nanthasane; Seidu, Razak; Stenström, Thor-Axel; Dada, Nsa; Overgaard, Hans Jørgen (Journal article; Peer reviewed, 2017) -
Investigation of Solar Photovoltaic-Thermal (PVT) and Solar Photovoltaic (PV) Performance: A Case Study in Ghana
Abdul-Ganiyu, Saeed; Quansah, David Ato; Ramde, Emmanuel W; Seidu, Razak; Adaramola, Muyiwa S. (Peer reviewed; Journal article, 2020) -
Norwegian drinking water supply systems and risk management: guidelines, directives and microbial risk assessment
Seidu, Razak (Journal article, 2013)Norsk drikkevannsforsyning og risiko: Retningslinjer, direktiver og mikrobiologisk risikovurdering. Overføring av sykdomsfremkallende organismer gjennom drikkevannsforsyningen utgjør en stadig utfordring for folkehelsen ... -
Quantitative microbial rsk assessment and water quality modelling : on drinking water sources, recreational and recycled waters
Eregno, Fasil Ejigu (PhD Thesis;2017:77, Doctoral thesis, 2017)Despite various efforts to improve water quality in all pathways, waterborne diseases are still a major public health concern in both developing and developed countries. To address the threat of waterborne diseases through ... -
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 (Peer reviewed; Journal article, 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 ... -
Source-separation and on-site wastewater treatment : a combined treatment and resource recovery facility towards a circular economy
Moges, Melesse Eshetu (PhD Thesis;2019:4, Doctoral thesis, 2019)The world's water specialists agree to work on increased resource recovery from wastewater and reduced emissions to the environment. Source-separated wastewater treatment systems, which provide opportunities for local ...