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Lignocellulosic biorefinery as a model for sustainable development of biofuels and value added products
- De Bhowmick, Goldy, Sarmah, Ajit K., Sen, Ramkrishna
- Bioresource technology 2018 v.247 pp. 1144-1154
- biochar, biofuels, biomass, biorefining, carbon dioxide, coculture, feedstocks, fermentation, greenhouse gas emissions, lignocellulose, microalgae, models, recycling, sustainable development, value-added products
- A constant shift of society's dependence from petroleum-based energy resources towards renewable biomass-based has been the key to tackle the greenhouse gas emissions. Effective use of biomass feedstock, particularly lignocellulosic, has gained worldwide attention lately. Lignocellulosic biomass as a potent bioresource, however, cannot be a sustainable alternative if the production cost is too high and/ or the availability is limited. Recycling the lignocellulosic biomass from various sources into value added products such as bio-oil, biochar or other biobased chemicals in a bio-refinery model is a sensible idea. Combination of integrated conversion techniques along with process integration is suggested as a sustainable approach. Introducing ‘series concept’ accompanying intermittent dark/photo fermentation with co-cultivation of microalgae is conceptualised. While the cost of downstream processing for a single type of feedstock would be high, combining different feedstocks and integrating them in a bio-refinery model would lessen the production cost and reduce CO2 emission.