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.
Development of clean cooking facilities to boost climate change resilience in Malawi
By Dr Deepa Pullanikkatil, Co-Director Sustainable Futures in Arica and Co-Founder Abundance
The University of Glasgow’s project on “Sustainable Clean Cooking Facilities to boost resilience to climate change in Malawi” was amongst three out of over 30 applications that were funded by the Scottish Government’s Climate Justice Innovation Fund (CJIF) in 2019. This fund supports the delivery of climate justice related projects which field test the feasibility of new methods, technologies or approaches in tackling climate change, or trial new innovations on the path to scale.
This bioenergy project aims to help address deforestation in southern Malawi (Machinga) through delivering a sustainable biofuel production (biogas and biosyngas) using organic waste as fuel for clean and efficient cooking. The total funding is £122,583 and the project is implemented by the University of Glasgow (PI Dr. Nader Karimi) with partners in Malawi; Abundance, Fab Engineering, Lilongwe University of Agriculture and Natural Resources (LUANAR) and LEAD.
The partnership in this project goes back to 2016, when Dr.Karimi and Dr.Pullanikkatil were connected through Sustainable Futures in Africa network. Between 2017-2018, Dr.Karimi and his colleagues from the University of Glasgow led a Biomass Energy study in partnership with Abundance to understand Malawi’s specific energy issues. Seeing first-hand that people still use the three stone stove, that women walk far distances to collect firewood, the rampant deforestation and that even simple fuel efficient technologies were not widely used in Malawi, inspired Dr.Karimi to think of a solution specifically “engineered” for Malawi. Dr.Pullanikkatil undertook a residency at the University of Glasgow in 2018, funded by the Engineering and Physical Sciences Research Council, which gave her the opportunity to engage further with Karimi and connect him to colleagues in Malawi, who later became partners of this CJIF project.
This project addresses the need for clean energy and contributes towards improving energy security using a novel and innovative technology designed for Malawi. In Malawi only 11% of the population have access to electricity and 98% of people use wood fuel for cooking (a figure that remains unchanged since 2010). Exposure to smoke from cooking has severe negative health impacts and even in urban areas of Malawi, firewood is mainly used in open three-stone fires. The use of firewood and charcoal has contributed significantly to deforestation and the need for cleaner energy sources which are more efficient for cooking is much needed in Malawi. Majority of the clean energy interventions in Malawi focus on using “less” firewood or charcoal, through increasing efficiency of stoves, this project improves on this approach by eliminating firewood altogether as fuel and replacing it with organic waste.
The project responds to the needs of Malawi as articulated by its Government. Regionally, clean and efficient Energy is a priority as noted in the Southern African Development Community (SADC)’s Protocol on Energy, to which Malawi has been a signatory since 1996. Nationally, the overarching development master plan for Malawi is the “Malawi Growth and Development Strategy” or MGDS. The latest MGDS III has ranked Energy as one of its five key priority areas and calls for technologies that can aid rural areas to have affordable, clean and efficient energy. Furthermore, Malawi’s Climate Change Policy and Strategy has acknowledged the need for efficient and clean energy to help Malawi reach its climate action goals.
Abundance’s Ruth Mumba and Grace Moyo visited Fab engineering where Andrew Khonje was manufacturing the gasifier plant.
Using an innovative approach of combining biogas and biosyngas, this project is developing a clean and efficient energy technology that can help Malawians rise the energy ladder and also contribute towards achieving climate action goals. The reason to combine biogas and biosyngas technology is due to Malawi’s unique climate; a hot and rainy season from mid-November to April and a relatively cool and dry season from mid-May to mid-August. During the wet season, plenty of wet orgnic waste will be available, while in the dry season, it will be dry organic waste. A technology that can only work with wet biomass/organic matter will not be suitable for the dry season and vice versa; hence this innovative combination of biogas and biosyngas. Furthermore, this innovative technology is completely smokeless, which is different from the previously piloted efficient cooking technologies such as fuel-efficient stoves, which reduce smoke, but not completely remove it.
Through this project, a nationwide survey on biomass availability and its combustion properties was done by LUANAR in March 2020. Fab Engineering has assembled the energy plant with designs and instruction from the PI and colleagues from University of Glasgow. Currently, the plant is being tested with various types of waste including cow dung and rice husks, both of which are wastes readily available in the site where the technology will be piloted. The energy plant will be piloted at the kitchen of the Chilimba Primary school at Mbando village, where Abundance has been working since 2016. Abundance has set up a youth waste collection team of 10 men and 10 women, who have begun collecting dry and wet wastes at Mbando village. They have been able to find rice husks from a nearby rice mill, sugarcane waste and cowdung from smallholder farms within the village.
The testing of the cooker is ongoing and preliminary results are promising, as evident in the pictures where the gas flame successfully boiled water in a pot. Abundance’s Ruth Mumba and Grace Moyo visited Fab engineering where Andrew Khonje was manufacturing the gasifier plant.
COVID-19 has challenged the project team to undertake work with less physical contact with Mbando villagers. Meetings were held at the village with safe distancing. Malawi did not have a lockdown, however the team shared masks, cleaning materials with Mbando village and purchased a smartphone to ease communication for the Community Coordinator. As the number of cases of COVID-19 declined in the past weeks, a site visit was done on 8 October 2020 by Fab engineering and Abundance’s team. Stewart Paul, who recently returned from the University of Glasgow with a master’s degree joined Ruth Mumba and Grace Moyo in the visit.
The site chosen for the piloting is a kitchen used by Mary’s Meals, a Scottish charity that provides nutritious mid-day meals to children. Abundance shared the project idea with them and were delighted when they delivered 732kg of Corn Soya Blend (CSB) flour to Abundance’s offices in Zomba which will be used for the piloting phase. During piloting phase CSB porridge will be cooked and served to approximately 1200 children in the primary school. The partnership and generocity of Mary’s Meals in this project is much appreciated.
It is already well reflected in the open literature that extensive use of firewood and charcoal has led to massive deforestation and significant health issues in Malawi. This project aims to address the deforestation problem using organic waste in an innovative cooker instead of firewood or charcoal. The users of the technology are Mary’s Meals staff and teachers from Chilimba Primary School in Mbando village. In this regard, an indemnity form has also been signed by Abundance and Chilimba school to indemnify Mary’s Meals of any issues arising from the project. The piloting will be done for several weeks where the cooker will be tested. These users will be interviewed to improve the technology design and a reengineered design will be made that addresses their concerns. This way, the design is informed by local knowledge. After completion of the project, the system stays in the school and will be a permanent asset for the Mbando community. The project results will be widely disseminated through networks such as the SFA and private sector in Malawi will be encouraged to upscale the technology. The project will end in March 2021 and it is hoped it will leave a lasting legacy at Mbando village.
Update on the CJIF Bioenergy project in Malawi
By Dr Deepa Pullanikkatil, Founder of Abundance
The Scottish Government Climate Justice Innovation Fund funded project “Development of sustainable clean cooking facilities to boost resilience to climate change in Malawi” is proceeding despite the COVID-19 restrictions. The team at Abundance is holding biweekly meetings with Dr Nader Karimi who is the PI for this project and with LEAD, LUANAR and Fab Engineering as partners.
LUANAR completed the survey on waste availability by studying agricultural and other organic waste available in different parts of the country in March/April 2020. Manufacturing on the prototype of biogas/biosyngas cooker has begun by Fab Engineering in Blantyre. This prototype will be piloted in the kitchen of the primary school at Mbando village in August 2020. Abundance held a meeting at Mbando village on 19 May with safe distancing to mobilise youth at Mbando village to collect dry and wet waste ahead of the piloting. Care will be taken to ensure gender balance within this youth team.
This project pilots an innovative technology specifically made for Malawi’s unique wet and dry seasons (which generate wet and dry organic waste). The dry and wet waste will be separately fed into a gasifier plant (biogas/biosyngas) to create energy for a cooker that can work year round. The technology is smokefree and has no negative health implications. A study on social and cultural aspects of using the cooker technology will be conducted by Abundance in August 2020.
A draft questionnaire is being prepared for the same and SFA members who are interested in this project and wish to review it are welcome to contact Abundance (abundance.future@gmail.com).
