Practical strategies to improve harvestable biomass energy yield in microalgal culture: A review
| Autor: | Abbas Mehrabadi, Nima Hajinajaf, Omid Tavakoli |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hydraulic retention time
Renewable Energy Sustainability and the Environment business.industry 020209 energy Biomass Forestry 02 engineering and technology Agricultural engineering Raw material Renewable energy Biofuel 0202 electrical engineering electronic engineering information engineering Production (economics) Dominance (ecology) Environmental science business Waste Management and Disposal Agronomy and Crop Science Productivity |
| Zdroj: | Biomass and Bioenergy. 145:105941 |
| ISSN: | 0961-9534 |
| Popis: | Pursuing research on renewable energy is a key challenge in this century due to worldwide increase in energy demand and environmental issues associated with fossil fuel consumption. In this sense, microalgae have received considerable renewed attention to become a feedstock for large-scale biofuel production. However, high cost of large algal cultivation systems precludes it from currently being an economically viable option. In other words, to lower the cost, the harvestable biomass energy yield, which is a function of productivity, energy content and harvestability of biomass, must be maximized. Therefore, any practical method that could improve these parameters would be beneficial and contribute to enhancement of the biomass energy yield and is interesting for further consideration. Hence, this study aims to review parameters influencing the harvestable biomass energy yield in microalgal cultures particularly wastewater-fed cultures and to discuss the advantages and limitations of different practical strategies in order to promote low-cost energy production from microalgal cultures. Five practical strategies were considered: CO2 addition, variation of hydraulic retention time, cultivation and dominance of colonial species, zooplankton control and algal recycling. Advantages and drawbacks of these parameters were assessed, and it is concluded that of these parameters, CO2 addition and its combination with algal recycling have the higher impact on the enhancement of the harvestable biomass energy yield. |
| Databáze: | OpenAIRE |
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