Preservation of the environment has become a major global concern. Continuous growth in the human population has increased petroleum consumption, with an ever-increasing demand for energy. According to the Global Energy Statistical Yearbook 2015, global energy consumption is projected to grow by 8.1%, from 97.8 quadrillion British thermal units (BTU) in 2015 to 105.7 quadrillion BTU in 2040 due to growth in the human population. The extensive use of fossil fuels contributes to rising atmospheric CO2 levels, which are predicted to increase by 2.2% between 2015 and 2040. If this environmental degradation continues, the planet will face catastrophic climate changes.
Spirulina cultivation helps diminish the greenhouse effect through CO2 sequestration and abundant oxygen production. Spirulina cultivation using flue gas is more economical and environment-friendly. The cultivation of spirulina uses lesser space with a low impact on soil. In addition, spirulina is an excellent producer of oxygen. Large-scale production could, therefore, improve air quality.
Water and land use are two important environmental factors that must be considered. Interestingly, spirulina can be cultivated on arid lands. In addition, it needs a relatively lower amount of water, as water can be recycled after harvest. After extracting essential compounds from the biomass, the residual biomass can be used in many other refining processes. For instance, sugar-based and cellulosic biorefining results in the accumulation of protein byproducts, which can be used as animal feed.
Spirulina cultivation can help combat pollution, water contamination and overconsumption, soil erosion, and deforestation. Additionally, after the extraction of essential compounds, the residual biomass can be used as energy feedstock for biodiesel production. Thus, integrated food and energy systems are designed to combine, intensify, and increase the productivity of food and energy simultaneously through sustainable land management. Food-energy integration makes spirulina more economically competitive with high diversification. Spirulina cultivation can help fight pollution. Oxygen is essential for all life forms. Large spirulina cultures help rebalance oxygen and CO2 levels and can absorb toxins, heavy metals, and other elements present in the environment.
In terms of value, the Europe spirulina market is expected to reach $156.61 million by 2030, at a CAGR of 13.3% from 2023 to 2030, while in terms of volume, the market is expected to reach $8,308.8 tons by 2030, at a CAGR of 7.5% from 2023 to 2030, according to the latest publication of Meticulous Research®.
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