Browsing by Author "Kombe, Godlisten Gladstone"
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Item Biofuel and biorefinery technologies volume 8: biodiesel: from production to combustion(Tylor & Francis, 2022) Kombe, Godlisten GladstoneGlobal environmental concerns about reducing greenhouse gas emissions and relying less on nonrenewable oil fuels have paved the way for biodiesel and other renewable energy sources. Unfortunately, despite increased demand for biodiesel fuel, the industry's growth has been hampered by low worldwide petrol-diesel prices. To solve this conundrum, the authors provided a thorough discussion of various policies that promote biodiesel development, cutting-edge prospective production technologies, life cycle assessment, and techno-economic analysis of biodiesel plants. This review attempts to analyze various issues as presented in this book. The book contains cutting-edge biodiesel manufacturing, purification, and upgrading techniques. It investigates global biodiesel production and its possible role in reducing the consequences of climate change. Biodiesel by-product uses, biodiesel plant techno-economic issues, and biodiesel life cycle assessment (LCA), among other issues, have all been comprehensively explored.Item Community participation in the renewable energy sector in Tanzania(Aalborg University Press, 2020) Bishoge, Obadia Kyetuza; Kombe, Godlisten Gladstone; Mvile, Benatus NorbertCommunity participation (CP) is emphasized in the planning and implementation of the various projects and sector. Renewable energy (RE) sector like other sectors requires community participation for its effectiveness and efficiency. This review aims at exploring the community participation in the renewable sector in Tanzania. Five themes were identified for through literature review where a Seven-Step Model for comprehensive literature review was used. These themes include (i) access to information on RE resources; (ii) community awareness of the RE technologies and related policies, laws, and regulations; (iii) RE as the source of employment opportunities; and (iv) RE as an alternative to fossil fuels and for poverty alleviation. These study revealed that despite the different efforts taken by the government and other energy stakeholders the community still lack enough information and awareness about renewable energy technologies, institutional and regulatory framework. However, the interesting issue is that renewable energy sectors play an important role in providing employment opportunities to the local communities. Moreover, the use of renewable energy has contributed to poverty alleviation. For instance, hydropower has an increase in electricity supply, solar energy has improved the local households’ standard of living, education and health services. It is recommended that the government and other energy stakeholders should cooperate to provide more information and awareness of renewable energy technologies to the community. This should be accompanied by the introduction of the national policy and law which is specifically for renewable energy to enable its development.Item Community perspectives on natural gas management in Tanzania(Sage, 2022) Bishoge, Obadia Kyetuza; Kombe, Godlisten Gladstone; Mvile, Benatus NorbertSeveral studies have discussed community participation in socio-economic projects. The studies have shown that many projects that have been initiated by either the government or private sectors have encountered resistance and reluctance from the local communities and other officials due to lack of prior and continuous involvements, poor dissemination of information on the significance of the projects, and differences in priority and interests. One of the key factors for the success and sustainability of any project is a clear understanding of the community's voluntary involvement, perspectives, and expectations of the given project. This study, therefore, aims to analyze the communities’ perspectives, expectations, and concerns related to the recent discovery and management of natural gas in Tanzania. The study adopted a questionnaire survey. Data was collected from the 115 respondents from local communities of Lindi and Mtwara regions in Tanzania. The study revealed that the communities are aware of the natural gas discoveries and policies and laws related to them. It shows that a small number of employment opportunities have been created and/or are expected to increase in the future. There should be transparency and accountability in the natural gas development, contracts, and agreements. The parliament should be the most trustworthy custodian of natural gas revenues. The study revealed that the natural gas sector would enhance the living conditions of Tanzanian households and support the attainment of the country's socio-economic development.Item Energy consumption efficiency behaviours and attitudes among the community(Aalborg University Press, 2021) Bishoge, Obadia Kyetuza; Kombe, Godlisten Gladstone; Mvile, Benatus NorbertThe rapid increase of energy consumption for socioeconomic activities has been the main source of the constant rise of greenhouse gases emission, which causes global warming and climate change effects. Several factors including knowledge, attitudes, and behaviour have been reported elsewhere to influence the energy consumption rate globally. To assess the influence of these factors, some theories, models, and approaches were reviewed to provide a theoretical and conceptual framework on the influence of human knowledge, attitudes and behaviours on energy use and saving. This study assessed some parameters including, awareness, motivation factors, moral and normative concerns, environmental norms, knowledge concerns, technology adoption concerns, and contextual factors and habits. This study conducted a comprehensive literature review followed by Seven-Step Model on studies related to this work. This review work found that behavioural change is significant to address the challenges facing humanity in utilizing natural resources including energy. Also, energy consumption efficiency needs multidisciplinary and sectoral approaches. In energy-saving, individuals need to be informed on the new technologies, energy sources, production and use.Item Overview of microwave-assisted transesterification technology for biodiesel production with bibliometric indicators(Tylor & Francis, 2022) Kombe, Godlisten GladstoneThe demand for novel, environmentally sustainable biodiesel intensification technologies is growing. Microwave-assisted transesterification technology is one potential solution to this gap. This study evaluates the research productivity of microwave-assisted transesterification technology for biodiesel production using various bibliometric indicators. Using relevant keywords search, data were extracted from the Scopus database. Visualization of similarities viewer (VOSviewer) software v1.6.18 was then used for network visualisation and various bibliometric analysis. The study shows that microwave-assisted transesterification technology is still in its early stages when compared to other biodiesel production technologies. Despite the fact that its potential was first highlighted in 2004, the first study on its application was published in 2007. However, it was not until 2010 that several researchers became interested in this technology. The most productive countries in publications, existing collaborations and cooperation, top institutions in publications, and top journals have been identified and presented. Finally, keyword co-occurrence analysis of the subject, as well as the most prolific researchers and the highest referenced publications in the field, were presented and discussed. Researchers are likely to benefit from the study's bibliometric indicators in finding prospective research topics, high-quality scientific literature, and relevant journals for disseminating research related to microwave-assisted transesterification technology for biodiesel production