Biogas Production Potential from Agricultural and Agro-Processing Waste in South Africa
| Autor: | Primrose Magama, K. Dhavu, Khuthadzo Mugodo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
education.field_of_study Environmental Engineering Waste management Renewable Energy Sustainability and the Environment business.industry 020209 energy Population Environmental engineering 02 engineering and technology Cubic metre 010501 environmental sciences 01 natural sciences Renewable energy Anaerobic digestion Biogas Agriculture Greenhouse gas 0202 electrical engineering electronic engineering information engineering Energy supply business education Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Waste and Biomass Valorization. 8:2383-2392 |
| ISSN: | 1877-265X 1877-2641 |
| DOI: | 10.1007/s12649-017-9923-z |
| Popis: | In 2015, South Africa faced an acute electrical energy crisis. As a result, the country imposed load shedding to meet the peak electrical energy demand of the population. Coupled with this are concerns over the environmental impact of electrical energy generation from coal, which contributes about 60% of the country’s greenhouse gas emissions. Renewable energy technology, specifically anaerobic digestion for producing biogas is increasingly gaining impetus as a solution to augment energy supply and mitigate climate change. This theoretical analysis investigated the annual biogas production potential of liquid and solid agricultural waste and the agro-processing sectors. The annual waste generated for each waste stream was primarily obtained from the National Agricultural Statistical database and the data analysed spanned over a period of 5 years. Liquor industry (clear beer and wineries) was found to have the highest potential in biogas production of about 35 × 106 cubic meters/year and the least potential was by pig farming of about 0.02 × 106 cubic meters/year. In total, an average of 86 × 106 cubic meters of biogas can be produced from the investigated sector’s industries. This is equivalent to 148 GWh of electrical energy, which is twice the set 2030 target for biogas (75 GWh) in South Africa. Therefore, using biogas technology to generate electrical energy from the investigated sectors can augment the country’s energy supply. |
| Databáze: | OpenAIRE |
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