Systems and economic analysis of microalgae ponds for conversion of CO{sub 2} to biomass. Final report

Benemann, John R.; Oswald, William J.

doi:10.2172/493389

Cited by 321 publications

(373 citation statements)

References 39 publications

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“…As stated before, algae can also produce valuable co-products, such as proteins, natural colorants, and biomass after oil extraction, that can be used as animal feed, medicines or fertilizers [3,10], or fermented to produce ethanol, methane or other biofuels [5]. Although this possibility is widely reported, just a few studies [46,[51][52][53]55,57] looked with attention to this question and made financial calculations on the feasibility of producing biofuel and co-products together. This could be a promising opportunity to make algae biofuel more economically feasible.…”

Section: Co-productsmentioning

confidence: 99%

Surveying techno-economic indicators of microalgae biofuel technologies

Ribeiro

Silva

2013

Renewable and Sustainable Energy Reviews

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a b s t r a c tThe need to develop innovative technologies that could replace fossil fuels and, consequently contribute to the reduction in emissions of greenhouse gases is now clear. In this circumstance, algal biofuels are generating considerable interest around the world. The purpose of this study is to provide an integrated assessment of microalgae potential as a source of biofuels, while comparing its costs with that from other emerging biofuel technologies. This article emphasizes the importance of emerging United States and European Union energy policies that will encourage the development of innovative, and sustainable technologies in their respective regions. An ample review of the scientific literature was carried out, contributing to the analysis of cost, economic and technical indicators. The results obtained allowed the detection of important gaps of information that need to be filled, in order to guide future investment decisions concerning this rising technology.

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Section: Co-productsmentioning

confidence: 99%

Surveying techno-economic indicators of microalgae biofuel technologies

Ribeiro

Silva

2013

Renewable and Sustainable Energy Reviews

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“…Typically, lipid may accumulate up to 20 % in microbial cells [31]. Lipid accumulation becomes higher in the limited conditions [32]. Depending on algal species, availability and types of nutrients, N:P ratio in algal biomass ranges from 4:1 to 40:1 [33].…”

Section: Microalgae As Renewable Feedstock For Biofuelmentioning

confidence: 99%

Lucrative future of microalgal biofuels in Pakistan: a review

Manzoor

Tabssum

Javaid

et al. 2015

Int J Energy Environ Eng

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Pond-grown microalgae have been considered as feedstocks for production of biodiesel. Various natural habitats and man-made environments can be exploited to cultivate microalgae without utilizing arable land which is already decreasing due to urbanization and industrial development. Suitable temperature, solar illumination and availability of phosphorus and nitrogen-rich organic wastes result in algal blooms in stagnant water and river bank's associated pools in many regions including Pakistan.

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“…Filtration and sedimentation are other methods that can be used in this step. In particular, sedimentation can be enhanced by centrifugation, which is becoming the preferred harvesting method of microalgae (Benemann and Oswald, 1996), since it is more efficient to recover small size cells with low mass concentrations. Also, it is very flexible in terms of production capacities, is robust, has high recovery rates normally in excess of 90%, and can significantly reduce the water content.…”

Section: Process Description: Assumptions and Conditionsmentioning

confidence: 99%

“…For lipids extraction and separation a three-phase continuous centrifuge is considered, following the suggestion of Benemann and Oswald (1996) of mixing the biomass at the entrance with a fraction of the lipids obtained in the centrifuge to increase the overall separation efficiency, up to 98%.…”

Section: Process Description: Assumptions and Conditionsmentioning

confidence: 99%

Sustainability and economic evaluation of microalgae grown in brewery wastewater

Mata

Mendes

Caetano

et al. 2014

Bioresource Technology

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a b s t r a c tThis article evaluates the sustainability and economic potential of microalgae grown in brewery wastewater for biodiesel and biomass production. Three sustainability and two economic indicators were considered in the evaluation within a life cycle perspective. For the production system the most efficient process units were selected. Results show that harvesting and oil separation are the main process bottlenecks. Microalgae with higher lipid content and productivity are desirable for biodiesel production, although comparable to other biofuel's feedstock concerning sustainability. However, improvements are still needed to reach the performance level of fossil diesel. Profitability reaches a limit for larger cultivation areas, being higher when extracted biomass is sold together with microalgae oil, in which case the influence of lipid content and areal productivity is smaller. The values of oil and/or biomass prices calculated to ensure that the process is economically sound are still very high compared with other fuel options, especially biodiesel.

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Systems and economic analysis of microalgae ponds for conversion of CO{sub 2} to biomass. Final report

Cited by 321 publications

References 39 publications

Surveying techno-economic indicators of microalgae biofuel technologies

Surveying techno-economic indicators of microalgae biofuel technologies

Lucrative future of microalgal biofuels in Pakistan: a review

Sustainability and economic evaluation of microalgae grown in brewery wastewater

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