@misc{AfitiriAramMartienssen, author = {Afitiri, Abdul-Rahaman and Aram, Simon Appah and Martienssen, Marion}, title = {Sytematic review of the effects of Advanced Oxidation Processes integration with solar water disinfection for improved drinking water production}, series = {Waste Management Bulletin}, volume = {1}, journal = {Waste Management Bulletin}, number = {4}, issn = {2949-7507}, doi = {10.1016/j.wmb.2023.08.005}, pages = {52 -- 59}, language = {en} } @misc{AfitiriAfrifa, author = {Afitiri, Abdul-Rahaman and Afrifa, Ernest Kofi Amankwa}, title = {Households' willingness to use water from a solar water disinfection treatment system for household purposes}, series = {World}, volume = {5}, journal = {World}, number = {4}, editor = {Bergman, Manfred Max}, publisher = {MDPI}, address = {Basel}, issn = {2673-4060}, doi = {10.3390/world5040060}, pages = {1181 -- 1193}, abstract = {The consumption of contaminated water contributes to the global burden of diarrhea and other water-borne diseases, especially among young children. While decentralized solar water disinfection treatment systems (hereafter SODIS) remain a viable option to have safe drinking water, our understanding of the effects of household water treatment before use on willingness to accept and adopt a SODIS is limited. In this study, a complementary log-log regression analysis of the compositional and contextual factors that systematically vary with willingness to accept and adopt a SODIS in the Sawla-Tuna-Kalba (STK) district of Ghana was carried out. Based on our findings, a greater proportion of households (97\%) are willing to accept and adopt a SODIS. Compositional and contextual factors such as age, marital status, education, religion, and geographical location significantly contribute to households' willingness to accept and adopt a SODIS in the STK district of Ghana. Households that treat their water before use (66\%, p < 0.05) are more likely to accept and adopt a SODIS compared to those that do not treat their water before use. The findings, therefore, suggest that scaling up SODIS in the STK district is sacrosanct and highlight the necessity to analyse compositional and contextual factors influencing willingness to accept and adopt SODIS. Our findings will inform policies and programs aimed at implementing SODIS in the study area to improve the health of communities that rely on poor-quality drinking water sources.}, language = {en} } @misc{AfitiriAfrifa, author = {Afitiri, Abdul-Rahaman and Afrifa, Ernest Kofi Amankwa}, title = {Barriers and challenges in the implementation of decentralized solar water disinfection treatment systems : a case of Ghana}, series = {Solar}, volume = {5}, journal = {Solar}, number = {2}, editor = {Voz, Cristobal}, publisher = {MDPI}, address = {Basel}, issn = {2673-9941}, doi = {10.3390/solar5020025}, pages = {1 -- 20}, abstract = {Decentralized solar water disinfection systems (DSODIS) in continuous flow systems are alternatives for large-scale improved water access in rural contexts. However, DSODIS in rural Ghana are limited. An exploratory sequential mixed-methods design was used to explore the enablers of and barriers to, as well as reported barrier perceptions to, the effective implementation of DSODIS in the Sawla-Tuna-Kalba (STK) District of Ghana. The qualitative data (26 respondents) were analyzed thematically, and the quantitative data (1155 household heads) were subjected to Poisson regression analyses. Enablers were categorized into themes such as willingness to pay for DSODIS, household and community participation, and willingness to use water from DSODIS. Similarly, the barriers include environmental barriers, technological barriers, economic barriers, and political and legal barriers. Household characteristics such as main water source and income, age group, education, marital status, household size, being born in the community, and years living in the community are statistically associated with reported barrier perceptions. Households with unimproved water sources and high income (IRR = 1.432, p = 0.000) and improved water sources and high income (IRR = 1.295, p = 0.000) are 43\% and 30\% more likely, respectively, to report more barrier perceptions compared with households with unimproved water sources and low income. Females (IRR = 1.070, p = 0.032) are marginally more likely to report more barrier perceptions compared with males. The model output also indicates that household heads with higher educational attainment (IRR = 1.152, p = 0.001) are 15\% more likely to report more barrier perceptions compared with those with no formal education. These findings provide valuable information for policymakers and stakeholders aiming to provide quality water in rural Ghana where centralized systems cannot be installed.}, language = {en} } @misc{AfitiriAfrifaMartienssen, author = {Afitiri, Abdul-Rahaman and Afrifa, Ernest Kofi Amankwa and Martienssen, Marion}, title = {Understanding the potential of mixed photocatalysis for optimization of water disinfection}, series = {Pollutants}, volume = {5}, journal = {Pollutants}, number = {2}, editor = {Lasagni, Marina}, publisher = {MDPI}, address = {Basel}, issn = {2673-4672}, doi = {10.3390/pollutants5020013}, pages = {1 -- 17}, abstract = {The use of ultraviolet (UV) for water disinfection is known for its chemical-free process and with no harmful disinfection by-products. Yet, the disinfection process remains time-consuming, and many studies are limited to disinfection of one or two microbial species. Direct photolytic and glass-embedded TiO2 photocatalytic disinfection of four different bacterial species (Staphylococcus aureus, Salmonella senftenberg, Bacillus subtilis, and Escherichia coli) were assessed using UV-LED radiation with wavelengths of 365 nm. The optimization of the UV disinfection under different masses of the TiO2 photocatalyst was evaluated. Additionally, the order of disinfection of the different bacteria species was assessed. The disinfection effects were measured based on the potential to reduce the number of bacteria species, calculated in colony-forming units/mL and log reduction units. The disinfection of Staphylococcus aureus was enhanced from 1.46 log reduction units in the UV-alone treatment to a high of 5.65 log reduction units in the UV + 0.08 g TiO2 treatment. Regarding Salmonella senftenberg, disinfection was enhanced from 1.26 log reduction units to 3.85 log reduction units in UV-alone experimental treatments and UV + 0.04 g TiO2, respectively. Similarly, an increase in Bacillus subtilis reduction was achieved from a low of 0.69 log reduction units to a high of 2.98 log reduction units in UV-alone treatments and UV + 0.08 g TiO2, respectively. The disinfection of Escherichia coli was enhanced from 2.49 log reduction units (UV-alone treatment) to a high of 6.35 log reduction units (UV + 0.02 g TiO2). The findings provide key implications and new insights into the studied bacteria species and the future application of porous glass-embedded TiO2 photocatalysts to enhance bacteria disinfection using UV light for improved water.}, language = {en} }