Insights from LUANAR: CJIF project's successes
A JOURNEY TO THE PRODUCTION OF BIOGAS AND BIO-SYNGAS
By Dora Nyirenda, Research Administrator, LUANAR
Wastes being the unusable materials as they are, who would want to do anything with them? But as the saying goes, what can be seen irrelevant to a certain discipline can be relevant to another, for instance, one discipline can think agricultural and municipal wastes do not have any use but here are some scientists, academicians and local people who think that these wastes have the potential to produce energy to help in tackling the issues of climate change.
To validate this, a research project titled ‘Development of sustainable clean cooking facilities to boost resilience to climate change in Malawi’ was funded by the Scottish Government Climate Justice Innovation fund. Different partners namely LUANAR, Abundance worldwide, LEAD, University of Glasgow and Fab engineering partnered with Dr Nader Karimi to work on it. LUANAR’s aim was to conduct surveys on waste availability by studying agricultural and other organic wastes in different parts of the country especially in 6 districts of Nkhotakota and Lilongwe the central part of Malawi, Karonga and Mzimba districts the northern part of Malawi and Machinga specifically in Mbando village and Chikwawa district in the southern part of Malawi in Feb/March/ April of 2020. There after doing the chemical analyses of the wastes.
What an exciting opportunity for LUANAR to be part of the project as it triggered the minds to know more about agricultural and municipal wastes usefulness in production of energy. In Malawi, the general understanding has been that most agricultural wastes have performed poorly in production of biogas and bio-syngas and as such they have mainly been left idle leading to continued use of firewood that leads to deforestation.
Well not anymore as different solutions are coming up through the use of municipal and agricultural wastes to produce bio-fuels which are then burned in a novel gas cooker. Indeed this will save Mother Malawi from high deforestation rate that it has recorded in the recent years in Africa (Ngwira S & Watanabe T, 2019).
Members from LUANAR conducted surveys in the mentioned districts, some of the common biomass and/ or organic wastes that were found and samples collected were cassava peelings, bean shells, rice husks, bagasse, molasses, maize bran, cow dung, sorghum stems, sorghum fruit, goat droppings and many more. Another waste that was mentioned that some members had responded was plastic wastes; well one would wonder if this is a biomass waste, right? Not strictly speaking though, the origin maybe biomass in fossil form. For some thoughts some might think to study on this and see if these plastics wastes can be useful in generating energy.
Interestingly, some respondents said that most of the crop and livestock wastes are used for crop production as a source of nutrients which is a very good use. Though this is the case, many of them demonstrated that such wastes were not adequately utilized which gives a window of using these wastes in the production of energy.
Bagasse being one such type of wastes that is produced in abundance by the sugar industries as well as residents in sugar growing areas, this waste was found that excess of it is left unused even after the sugar processing companies have burned it to produce electricity. Perhaps, this can be a raw material in areas where it is in excess to produce biogas and bio-syngas.
The waste sample raw materials that were collected were analysed for components that determine suitability of biomass for biogas and bio-syngas production. Carbon: Nitrogen (C: N) ration in the range of 10:30 was used to guide quality aspects related to the intended use. Fortunately, the sampled wastes were within the range that is suitable for biogas production. Most interestingly, all the chemical elements seen as impurities that would reduce the efficiency of the value of the biomass in the production of biogas in the sampled wastes were below the limits of copper (mg/kg) of 10.00, Zinc (mg/kg) 350.00, Nickel (mg/kg) 100 and Chromium (mg/kg) thresholds.
As successful as the surveys and analyses were, Mbando Village in Machinga district was ready to do the trials as the abundant wastes there were rice husks and cow dung. The trials are a success, biogas and bio-syngas are now being produced used for cooking at Mbando.
Insights from Abundance: CJIF project's successes
Fuelling Environmental Conservation: Saving trees in Mbando community
By Stewart Paul, Abundance
In a country with very low access to electricity at 11 % (World Bank, 2020), Malawi is bound to a heavy reliance on biomass as fuel for cooking meals, both at small/household to medium/commercial scale. Between March 2020 and February 2021, I participated in a study on “Sustainable Clean Cooking Facilities to boost resilience to climate change in Malawi”. Funded by the Scottish Government’s Climate Justice Innovation Fund (CJIF), the project aimed to help address deforestation in southern Malawi (Machinga) through delivering a sustainable biofuel production using organic waste as fuel for clean and efficient cooking. Designed in Glasgow and built by FabEngineering in Blantyre, the technology might just be a long term solution towards curbing heavy reliance on charcoal and fuelwood for food preparation, especially at a medium scale.
From attending bi-weekly management meetings to leading data analysis of the 2 surveys conducted in Machinga district between September 2020 and January 2021 I would consider myself as having closely worked with the rest of the partners as well as Abundance team on this project. The first survey was on waste collectors analysing the waste collection process, preparation of food, collection of fuel for cooking and knowledge of the environmental impact of burning fuels for cooking. The major findings were that maize stalks are the most common waste type found in Mbando community and that the majority of the stalks are collected at a fee. Also, it is mainly women who prepare food and the preparation process takes around one hour. Whereas mixed views characterised our enquiry on the importance of knowing the fuel type being used, the majority of the survey respondents showed wide knowledge on the environmental impacts of burning fuels, which largely border on the destruction of the physical environment. By successfully designing, delivering and piloting a cooking technological innovation that does not use fuelwood, I am compelled to conclude that the project was a success and it delivered on its aim and objectives.
My contribution towards the overall success of the project was mainly attributed to the cordial working relationship with all the partners: LUANAR, FAB Engineering, LEAD and the University of Glasgow. I hope the outcomes and outputs from this project will be used for further research and development of the technology and thereby substantially contribute towards our common drive and urgency to reduce people’s reliance on the “lungs of the land” for food preparation. By training community members on how to use the tested technologies, the project ensured that the community continues to benefit and conserve the environment through its sustainable use. Stakeholder engagements conducted towards the close of the project saw heightened participation and raised interest from crucial players in the area of energy such as the University of Malawi (Chancellor College and the Polytechnic) and the Scotland-Malawi partnership. Furthermore, the presentation of the project at the Machinga District Executive Committee (DEC) meeting was one of the key milestones as it ensures that the project is not only recognised but appreciated and appraised at the local government level.