The Principal Investigator, Dr. Joseph Kyambadde presenting an overview of the project at the research dissemination workshop at Ridar Hotel, Seeta, Mukono District on 23rd January 2024. On the right is the Co-PI, Dr. Robinson Odong.
****Through a project titled, “Adding value to agro/bio-waste through integrating technologies to enhance sustainable agro-process waste management in Uganda”, the researcher led by Dr Joseph Kyambadde from the Department of Biochemistry and Sports Science, have proposed a number of technologies that can be used to avert the challenge of poor waste management in the country.
Background
Majority of industries in the country such as dairies, abattoirs, breweries, distilleries, and tanneries are engaged in agro-processing. Such industrial processing often leads to the discharge of large quantities of organic-rich wastewater, disease-causing micro-organisms, and greenhouse gas emissions, if poorly treated or managed. While the regulatory body, the National Environment Management Authority (NEMA) requires that all industries should efficiently treat their effluent to meet discharge standards, waste treatment technology market surveys that were carried out in the major industrial cities of Kampala, Jinja, Masaka and Mbarara in 2018 showed that most agro-process industries do not treat their wastewater. Furthermore, very few have in there effluent treatment management, resource recovery processes such as bio-digesters for recovering biogas and nutrient-rich bio-slurry. The industries that attempt to treat their effluent mainly use conventional systems, such as settling tanks and lagoons that do not efficiently remove all waste components. Additionally, industries require energy for their operations, but many use non-renewable sources, such as wood fuel, contributing to deforestation and greenhouse gas emissions. Consequently, the agro-process industries pollute the environment, contaminate drinking water sources, and pathogens from their wastes contribute to cases of diarrheal diseases. The agro-processing sector urgently needs technology solutions that would meet national environment regulatory requirements at affordable costs, but also incorporate resource recovery and reuse to protect the environment and also enhance their profit margins. However, many industries lack cost-effective technologies to convert their wastes into biogas or other useful by-products such as slurry for use as manure/bio-fertilizers. The industries also lack expertise to design and operate appropriate waste treatment technologies.
Addressing participants, the Deputy Principal of CoNAS, Prof. Juma Kasozi called for increased investment into waste management initiatives, noting that it is one of the country’s biggest challenges.
Addressing the challenge of poor waste management
Agro/bio wastes are organic-rich, hence can be biodegraded using appropriately designed integrated technologies. These methods offer the options for meeting national discharge standards, reuse of treated effluent, and recovery of useful by-products. A study conducted by researchers from the College of Natural Sciences (CoNAS), Makerere University in collaboration with partners in the waste management sector proposes a number of technologies that can be deployed to effectively address the challenge of waste in the country. These include; anaerobic-aerobic digesters, sludge drying beds, constructed wetlands, and duckweed growing units.
Prof. Juma Kasozi addressing participants during the workshop.
Through their project titled“Adding value to agro/bio-waste through integrating technologies to enhance sustainable agro-process waste management in Uganda”, the researchers led by Dr Joseph Kyambadde from the Department of Biochemistry and Sports Science at Makerere made several recommendations towards waste management in the country. The researchers called for integration of aspects of the technology, encompassing wastes-to-energy courses/topics in the curricula of programmes like biochemistry, industrial chemistry, and environmental sciences at universities. This would enable training of scientists who would in turn foster adoption and promotion of the developed technologies in different industries. They also emphasized the need to promote investment in technologies that can be used to convert waste into useful by-products like biogas, bio-fertilizers and protein-additives, and to raise awareness about the importance of waste treatment technologies amongst private-public actors, managers/business owners of agro-processing industries, as well as government line ministries/agencies, and development partners.
The Head, Department of Biochemistry and Sports Science, Makerere University, Dr. Agnes Nandutu Masawi delivering her remarks on the significance of the project.
Supported by the Government of Uganda through the Makerere UniversityResearch and Innovations Fund (Mak-RIF), the overall objective of the project was to contribute to climate change mitigation, environmental sustainability, and agricultural development through integrated waste management systems. Under the project, the research team developed nutrient-rich fertilizer and animal feeds, and supported the production of biogas and electricity. Other members on the project included; Dr. Robinson Odong (Co-Principal Investigator), Dr. Gertrude Muwanga (Economist), Eng. Charles Ddungu (Civil Works), Eng. Edward Kalule (Electricals), Mr. Bright Twesigye (Research Assistant), Mr. Sendi (Field Assistant), Mr. Kuman (Field Assistant), and CATDA (Project Host).
Some of the Masters students who participated in the Research dissemination seminar.
Research dissemination seminar
On 23rd January 2024, the project team held a seminar at Ridar Hotel, Mukono District to present their research findings/outputs to key stakeholders in the waste management sector such as industry, academia, and policy makers, and also receive feedback. At the meeting, the project PI, Dr. Joseph Kyambadde decried the high level of poor waste disposal in the country. Highlighting the support extended to City Abattoir Traders Development Association (CATDA), Dr Kyambadde said many industries were directly disposing effluent into water sources, posing a number health, environmental and economic risks. “Investing in waste treatment technologies would avert the risks, but also support the recovery of useful byproducts such as nutrient-rich slurry or biogas.” As one of the achievements registered, the project supported the construction of a wastewater treatment plant at Kampala City Abattoir. According Mr. David Mutebi, the PRO of Kampala City Abattoirs Hides and Skin Traders’ SACCO, before Makerere supported the construction of the plant, effluent used to be discharged in Nakivubo Channel, posing several health and environmental risks. Dr Kyambadde appreciated the Government for supporting the project which is envisaged to minimize poor waste disposal throughout the country.
The Co-PI, Dr Robinson Odong briefing the participants on the work done under the project.
As part of the strategies for sustainable agro-process waste management in the country, participants advocated for a comprehensive policy, a waste management fund, and incentives for investment in waste management technologies. They also called for a comprehensive curriculum for waste management, and a market development plan for waste products.
Dr. Odong at one of the project sites.
In his remarks, the Deputy Principal of CoNAS, Prof. Juma Kasozi appreciated the Government of Uganda for the support extended to the project. “Poor waste disposal is one of Uganda’s biggest challenges. I commend the research team for venturing into research that directly addresses the country’s development problems.” He called for increased investment to support initiatives aimed at managing waste from industries and other places.
Mr. David Mutebi, the PRO of Kampala City Abattoirs Hides and Skin Traders’ SACCO appreciated the support extended to CATDA through the project. Through the project, a wastewater treatment plant was constructed at Kampala City Abattoir.Dr. Joel Isanga from the Department of Biochemistry and Sports Science, Makerere University moderated the workshop.Dr. Gertrude S. Muwanga together with other members on the project conducted a techno-economic analysis of integrated technologies to enhance sustainable agro-process waste management in Uganda.Participants in focused group discussions.The project team led by Dr. Joseph Kyambadde (5th L) together with the Deputy Principal of CoNAS, Prof. Juma Kasozi (4th Left), and stakeholders in the waste management sector at the research dissemination seminar at Ridar Hotel, Mukono District.
Dr. Jackson Efitre, a Senior Lecturer at the Department of Zoology, Entomology, and Fisheries Sciences, College of Natural Sciences (CoNAS), Makerere University has been appointed as a Lead Author for the Intergovernmental Panel on Climate Change (IPCC) Seventh Assessment Report. He was amongst the 664 experts nominated by governments and selected by the IPCC Bureau from a global pool of 3,771 nominees. This prestigious appointment recognizes his extensive expertise and significant contributions to climate science globally. Dr. Efitre previously contributed to the Africa chapter of IPCC’s 6th Assessment Report that was launched in 2022. In the seventh assessment cycle, Dr. Efitre will contribute to Working Group II: Impacts, Adaptation and Vulnerability, Chapter 17: Agriculture, Food, Forestry, Fiber and Fisheries.
IPCC Assessment Reports are the most authoritative assessment of the state of knowledge on climate science, mitigation and adaptation. Commissioned by nearly all governments, the reports are key in informing climate policy, and shaping international climate negotiations.
We congratulate Dr. Efitre on joining a distinguished group of experts who will contribute to this crucial undertaking for global climate policy.
Newly admitted students to the College of Natural Sciences (CoNAS) have been strongly encouraged to make academic excellence their top priority as they begin their university journey. During the official College orientation held on 6th August 2025, continuing students shared valuable insights aimed at helping the freshers adapt and thrive both academically and socially in the university environment.
Speaking at the event, Ms. Britah Kemigisha and Mr. Leakey Mbabazi, students of Conservation Biology and Petroleum Geosciences respectively, offered practical advice drawn from their experiences at CoNAS. The two students emphasized the importance of time management, consistent class attendance, and fostering healthy academic competition.
“Be ambitious and attend classes because attendance earns you some marks. Be competitive in a way that promotes excellence,” Mbabazi advised. He encouraged freshers to approach university life with purpose, noting that unlike in high school, university students must take personal responsibility for their learning outcomes. He recommended the use of professional networking platforms like LinkedIn, emphasizing their value in facilitating meaningful connections, expanding one’s professional network, discovering job opportunities, and staying updated on industry trends and insights.
Dr Joel Isanga briefing students about the Department of Biochemistry and Systems Biology.
Ms. Kemigisha underscored the importance of building supportive peer networks. “Form groups and inspire each other with rewards based on academic excellence,” she advised, emphasizing that academic group work, peer mentorship, and study circles can be powerful tools for motivation and accountability. According to her, surrounding oneself with goal-oriented individuals creates a positive learning environment that fosters growth and resilience, especially when faced with academic challenges.
The Dean, School of Physical Sciences, Prof. Michael Owor addressing the freshers about the different departments and programmes in the schoolSome of the freshers and college administrators at the orientation held on 6th August 2025 at JICA.
The orientation programme served as a platform to introduce First Year students to the academic programmes, services, and student life at CoNAS and the University in general. The session led by the Deputy Principal, Prof. Juma Kasozi featured presentations by both College and University leaders, who sensitized the new students on key university policies, academic structures, and support services. School Deans and Heads of Departments in attendance briefed students on the specific programmes offered within their respective units. These included the Dean, School of Physical Sciences, Prof. Michael Owor; the Dean, School of Biosciences, Prof. Arthur Tugume; the Head, Department of Biochemistry and Systems Biology, represented by Dr Joel Isanga; the Head, Department of Chemistry, Dr Emmanuel Tebandeke; the Head, Department of Geology and Petroleum Studies, Dr Arthur Batte; the Head, Department of Mathematics, Dr Ismail Mirumbe; the Head, Department of Physics, Dr Denis Okello; the Head, Department of Zoology, Entomology, and Fisheries Sciences, Dr Godfrey Kawooya Kubiriza; the Head, Department of Plant Sciences, Microbiology, and Biotechnology represented by Dr Godwin Anywar, and a representative from the Department of Exercise and Sports Science. Students were also sensitized on the registration and examination processes, ICT support services, library services, fees payment policies, the Anti-sexual Harassment Policy, counselling and guidance services, the emerging leaders programme, and general welfare at the University.
The Dean, School of Biosciences, Prof. Arthur Tugume addressing the students.
On behalf of the Principal, the Deputy Principal, Prof. Juma Kasozi warmly welcomed the newly admitted students to the College.He provided an insightful overview of the key academic units and programmes offered both within the College and across the University. In his address, Prof. Kasozi congratulated the students on securing admission into one of the most competitive, vibrant, and intellectually rigorous colleges within the University. He encouraged the students to take full ownership of their academic journey, emphasizing the importance of commitment, discipline, and focus from the very beginning. Highlighting the value of hard work and determination, he reminded them that the foundation they lay now will shape their future success.
Dr Emmanuel Tebandeke addressing the students about the programmes in the Department of Chemistry.
In his address, the Manager of the Counselling and Guidance Centre at the University, Mr. Henry Nsubuga, emphasized the importance of safeguarding mental health. He urged students to prioritize their psychological well-being, noting that maintaining a healthy mind is fundamental for academic success and overall personal development. Mr. Nsubuga encouraged students to actively seek support and adopt positive coping mechanisms to navigate the pressures of academic life.
Mr. David Kisitu, ICT Officer at CoNAS moderated the session.Dr Godfrey Kawooya Kubiriza briefed students about the programmes in the Department of Zoology, Entomology, and Fisheries Sciences, and the significance of the natural sciences in general.Dr. Arthur Batte (L) addressing students about the Department of Geology and Petroleum Studies.Dr. Godwin Anywar represented the Head, Department of Plant Sciences, Microbiology, and Biotechnology.Ms. Britah Kemigisha, a prospective BSc. Conservation Biology graduand briefing students on how to plan for a good CGPA.Mr. Leakey Mbabazi, a prospective Bachelor of Petroleum Geosciences graduand, also offered valuable tips on achieving academic excellence.Mr James Muhwezi, on behalf of student leaders at CoNAS briefed students about life on Campus.Dr Barbara Nerima from the Department of Biochemistry and Systems Biology briefed students on the emerging leaders programme at the University.Some of the students listening to officials.A section of officials at the orientation.
The lectures are expected to commence on Monday, 11th August 2024.
Researchers from the Department of Plant Sciences, Microbiology, and Biotechnology at the College of Natural Sciences (CoNAS), Makerere University have highlighted the urgent need to conserve medicinal plants in the face of increasing threats from climate change, over-harvesting, and habitat destruction.
Despite Namutumba District’s rich diversity of medicinal plants, conservation efforts are limited, and several species are already classified as globally and nationally threatened. This highlights the urgent need for focused conservation strategies to safeguard these vulnerable medicinal plants.
Dr Tugume addressing the workshop participants on the key research findings.
Under a project titled “Knowledge, Attitudes, and Conservation of Commonly Traded Medicinal Plants in a Climate-Changing Environment in Eastern Uganda,” a team of researchers led by Dr Patience Tugume documented 174 medicinal plant species. The goal was to assess the existential threats facing these plants due to unsustainable harvesting practices and the lack of effective conservation measures. These species are widely used to treat various health conditions, including malaria, syphilis, diabetes, hypertension, and certain cancers. The findings of the study are intended to guide the development of species-specific, evidence-based interventions to curb possible extinction and loss of medicinal plant resources. The research revealed troubling trends in the availability of key medicinal plants, including:
The herbalists mostly collected their medicinal plants from bushlands (92.0%), markets (82.3%) and wetlands (74.7%) and were rarely cultivated. This is of great concern regarding the conservation and future availability of these resources.
It was noted that 36% of the herbal products were made from roots, which presents a conservation threat since the heavy utilization of roots affects the regeneration of the medicinal plants.
Common plants used were: Kigelia africana (Naibere), Erythrina abyssinica (Ekiyirikiti) and Geranium sauveolens (Lokowe). Kigelia africana was the most cited species by the herbalists, indicating heavy utilization and a high conservation threat if deliberate measures are not taken to ensure its future availability.
Almost all respondents (289, 96.3%) acknowledged a considerable decline in the availability of 13 medicinal plants species including Aloe wollastonii (Ekigagi), Commiphora africana (Nkulidho), Myrica kandtiana (Mukikimbo) and Acacia sieberiana (Mufundawuzi).
Four plant species i.e. Tamarindus indica (Enkoge), Warburgia ugandensis (Balwegira), Mitragyna rubrastipulata (Mutamatama) and Mondia whitei (Mulondo) appear on the Red List of Globally and Nationally Threatened Species and were mentioned among the plants whose population has greatly declined.
The causes of decline in availability of medicinal plants included climate change, overharvesting, agricultural expansion, habitat destruction, land use change and inadequate regulations.
There were no medicinal plant conservation efforts by herbalists.
Kigelia africana was the most cited species by the herbalists, indicating heavy utilization and a high conservation threat.Participants included leaders of the herbalist associations, traders and research assistants.
The study recommended the following practices to ensure conservation of the medicinal plants:
Promote the use of sustainable harvesting techniques to ensure conservation of medicinal plants.
Conduct capacity building for stakeholders in the medicinal plants sector on conservation, value addition and standardization.
Establish community botanical gardens raw plant collection and sensitization programmes.
Advocate for agroforestry among herbalists to reduce the dependence on natural habitats.
Develop and enforce regulations on accessing natural areas for medicinal plants.
Promote conservation awareness campaigns.
Dr Tugume appreciating the Chief Administrative Officer-Namutumba, Mr. Ofwono Emmanuel for hosting the Dissemination Workshop at the District Offices.
Research Dissemination in Namutumba District
At the research dissemination workshop held in Namutumba District on 23rd July 2025, and attended by district leaders, researchers, and local herbalists, the project team led by Dr Patience Tugume expressed hope that the insights gained from the project, particularly in medicinal plants conservation approaches, will be invaluable for minimising the decline in medicinal plants.
The Resident District Commissioner-Namutumba, Mr. Fred Aggrey Bangu (Standing), the PI, Dr Patience Tugume (Right), and the LC5 Chairperson, Mr. Mutyaba Patrick (Left).
In her remarks, Dr Tugume, thanked the Government of Uganda through the Makerere UniversityResearch and Innovations Fund (MakRIF) for funding the project. She expressed gratitude to the research team composed of Dr Abubakar Sadik Mustafa, Dr Jamilu E. Ssenku, Dr Savina Asiimwe, and Dr Abdul Walusansa who have worked with her closely from project inception in February 2024. She further thanked the research assistants and all respondents, mainly the herbalists that participated in the study.
In a special way, she appreciated Mr. Fred Aggrey Bangu (Resident District Commissioner), Mr. Ofwono Emmanuel (Chief Administrative Officer), Mr. Kiire Noah (Communication Officer), Mr. Mugunywa Enock (District Community Development Officer), Mr. Kirya Moses (District Environmental Officer), Mr. Bamusubire William (District Forest Officer) and the leaders of herbalist associations for providing support throughout the study and sparing time to attend the dissemination workshop.
The MakRIF research Team. Left to right: Mr. Ronald Muwanika, Dr Savina Asiimwe, Dr Patience Tugume (Principal Investigator), Dr Abubakar Sadik Mustafa, and Dr Abdul Walusansa.
Addressing the participants, the Resident District Commissioner, Mr. Fred Aggrey Bangu urged all stakeholders to engage in a collaborative discussion on how the study findings can be translated into practical solutions to promote sustainable use and conservation of commonly used medicinal plants in Namutumba District amidst adverse effects of climate change.
The MakRIF project team with leaders of the Traditional Herbalist Associations.
Mr. Ofwono Emmanuel, the Chief Administrative Officer, praised the Makerere research team for selecting Namutumba as the study area. He said the research served as an eye-opener to the district officials and community, especially regarding the pressure exerted on natural medicinal resources.
Front left to right: Mr. Ronald Muwanika (Coordinator), Mugega Amos (Sec. Health), Mutyaba Patrick (LC 5), Bangu Fred (Resident District Commissioner), Dr Patience Tugume (Principal Investigator), Ms. Kiire Noah (Communication Officer), Dr Abubakar Sadik Mustafa (Researcher). Back left to right: Mugunywa Enock (District Community Development Officer), Kirya Moses (District Environmental Officer), Bamusubire William (District Forest Officer). Dr Savina Asiimwe (Researcher), and Dr Abdul Walusansa (Researcher).
Report compiled by Dr Patience Tugume and Dr Abubakar Sadik Mustafa – Department of Plant Sciences, Microbiology and Biotechnology, CoNAS, Makerere University