
Daniel DdibaStockholm Environment Institute (SEI)
Daniel Ddiba
Doctor of Philosophy
About
20
Publications
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Introduction
Research Associate at the Stockholm Environment Institute.
ORCID ID: orcid.org/0000-0001-5908-6417
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Publications
Publications (20)
There is growing awareness of the contribution of sanitation systems to greenhouse gas (GHG) emissions globally, and hence to climate change. However, there is a lack of comprehensive insight into emission sources dis-aggregated across the entire sanitation chain. This study presents a detailed review and analysis of emission sources from both sewe...
Globally, there is increasing interest in recovering resources from sanitation systems. However, the process of planning and implementing circular sanitation is complex and can necessitate software-based tools to support decision-making. In this paper, we review 24 decision support software tools used for sanitation planning, to generate insights i...
The circular economy, from an urban organic waste perspective, is seen as an approach to deal with increasing waste streams, while contributing to meeting the increasing demand for water, energy, food and other resources in urban areas. However, there is need for a systematic assessment of the broader environmental and social benefits and trade-off...
There is growing recognition of the potential environmental and socio-economic benefits of applying a circular approach to urban organic waste management through resource recovery. Decisions around planning and implementing circular urban waste systems require estimates of the quantity of resources available in waste streams and their potential mar...
Across the globe, there is increasing interest in implementing circular approaches to urban sanitation and waste management to mitigate environmental challenges and promote sustainable business opportunities. In Latin America where 80% of the population live in urban areas, there is limited investigation into the enabling factors and governance bar...
Worldwide, cities are implementing circular economy (CE) strategies to reduce the resources they consume and their environmental impact. However, the evidence of the intended and unintended social consequences of the transition to “circular cities” is scattered. The lack of a coherent overview of the evidence on the subject can hinder effective dec...
Transitioning to a circular economy requires strategic investments in infrastructure, but it also requires policy coherence, coordination and collaboration among stakeholders across sectors and governance levels. In this paper, we aimed to identify the factors that facilitate or impede governance capacity to adopt circularity in the form of resourc...
Sanitation access in urban areas of low-income countries is provided through unstandardized onsite technologies containing accumulated faecal sludge. The demand for infrastructure to manage faecal sludge is increasing, however, no reliable method exists to estimate total accumulated quantities and qualities (Q&Q) This proposed approach averages out...
Since phosphorus (P) is an essential element for life, its usage and application across agricultural production systems requires great attention. Monogastric species such as pigs and poultry can significantly contribute to global food security but these animals remain highly dependent on the supply of mineral inorganic P in their feeds. Pig and pou...
Water is crucial to human survival and well-being. The micronutrients in water contribute to nutritional security, water is important for cleaning food as well as for personal hygiene. However, water can easily become contaminated through e.g. use of poor or non-existent sanitation infrastructure. If present in drinking water, pathogens from human...
Revenues from faecal sludge (FS) treatment end products could offset treatment costs and contribute to financially viable sanitation. In urban sub-Saharan Africa, energy-producing resource recovery has the potential to generate greater revenue than use as soil conditioner. In contrast to wastewater sludge, the technical feasibility of using dried F...
This discussion brief introduces a new tool being developed in the SEI Initiative on Sustainable Sanitation.
There is increasing interest in the concept of the circular economy and “closing the loop” in our use of various vital resources – including water, energy and mineral resources. This is driven not only by an interest in reducing the social...
To-date, sanitation has mainly been approached from a public and environmental health perspective and this implies that excreta and other organic waste streams are seen not only as a hazard to quickly get rid of but also as a very costly menace to manage. However, looking at sanitation management from a resource recovery perspective provides an ave...
As part of a collaborative research project conducted by Eawag/Sandec and Makerere University, 180 faecal sludge samples were collected and analyzed in Kampala, Uganda from November 2013 to April 2014. Presented in this report are quantitative and qualitative results, alongside pictures of 76 samples taken in the laboratory and from the onsite loca...
One of the national targets of Uganda is to ensure that through infrastructural development, 30% of the farmers should have access to irrigation by 2020. In contrast to the rest of the country, Sembabule district, which lies in the cattle corridor, receives very low annual rainfall amounts that cannot support farming activities amidst the prolonged...
In the West, start-up companies are developed in college dorms and sold later for billions of dollars. In Sub-Saharan Africa (SSA), students sweat it out in libraries and later go on to spend years on streets looking for jobs. Various arguments have been presented on the possible causes of this general gap in fortunes for graduates from the West co...
Questions
Question (1)
How can one estimate the quantity of water that can be recovered from a wastewater treatment plant?
Many utilities in cities are nowadays exploring how to reuse water (treated effluent) from their treatment plants for potable and non-potable purposes. I am wondering if there is any research or studies that look into how to estimate the quantity water that can be obtained from such water reuse initiatives. Of course I understand that any calculations would include aspects like evaporation, potential leakages within the treatment plant as well as any portion of water that is not recoverable. I would happy to have anyone point me to any relevant studies they have encountered on these issues.