Microalgae: An emerging source of energy based bio-products and a solution for environmental issues

Katiyar, Richa; Gurjar, Bhola R.; Biswas, Shalini; Pruthi, Vikas; Kumar, Nalin; Kumar, Pankaj

doi:10.1016/j.rser.2016.10.028

Cited by 127 publications

(46 citation statements)

References 84 publications

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“…Even though biodiesel derived from microalgal biomass is of high potential, there are several challenging technical barriers that need to be solved before making this algal biofuel a reality. These challenges include the development of cost-and energy-effective cultivation and harvesting techniques, sustainable and energy-efficient lipid-conversion technology [164]. Even though biodiesel derived from microalgal biomass is of high potential, there are several challenging technical barriers that need to be solved before making this algal biofuel a reality.…”

Section: The Use Of Algal Biomassmentioning

confidence: 99%

Algal Biomass from Wastewater and Flue Gases as a Source of Bioenergy

et al. 2018

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Algae are without doubt the most productive photosynthetic organisms on Earth; they are highly efficient in converting CO 2 and nutrients into biomass. These abilities can be exploited by culturing microalgae from wastewater and flue gases for effective wastewater reclamation. Algae are known to remove nitrogen and phosphorus as well as several organic contaminants including pharmaceuticals from wastewater. Biomass production can even be enhanced by the addition of CO 2 originating from flue gases. The algal biomass can then be used as a raw material to produce bioenergy; depending on its composition, various types of biofuels such as biodiesel, biogas, bioethanol, biobutanol or biohydrogen can be obtained. However, algal biomass generated in wastewater and flue gases also contains contaminants which, if not degraded, will end up in the ashes. In this review, the current knowledge on algal biomass production in wastewater and flue gases is summarized; special focus is given to the algal capacity to remove contaminants from wastewater and flue gases, and the consequences when converting this biomass into different types of biofuels.

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Section: The Use Of Algal Biomassmentioning

confidence: 99%

Algal Biomass from Wastewater and Flue Gases as a Source of Bioenergy

et al. 2018

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“…Microalgal cell components have been recognized as precious sources of health promoting phytochemicals that can prevent and/or improve cardiovascular diseases, hyper-tension, and arthritis and act as anti-inflammatory, anticarcinogenic and antitumoral agents 7,8 . Included in the health beneficial phytochemicals synthesized by microalgae are terpenes, sterols, phenolics, polyunsaturated fatty acids (PUFA), vitamins, carbohydrates, proteins among other compounds 9,10 .…”

mentioning

confidence: 99%

Exploring Pavlova pinguis chemical diversity: a potentially novel source of high value compounds

Fernandes

Martel

Cordeiro

2020

Sci Rep

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In the Haptophyta Pavlova pinguis J. C. Green 16 only specific classes of compounds have been analyzed to assess its potential as food for larval hatcheries in aquaculture and as ecological biomarkers 13,17,18. For instance, Milke, et al. 11 and Parrish, et al. 12 assessed the ability of P. pinguis and other Pavlova species to sustain postlarval sea scallop growth focusing on its proximate, fatty acid and sterol composition. In this microalga the complete characterization of lipid components (simple and complex lipids) is still largely unexplored 6,9. Thus, in the present study the analysis of the lipophilic fraction of P. pinguis was performed in order to identify its lipophilic features before and after alkaline hydrolysis through gas chromatography-mass spectrometry (GC-MS) and evaluate its prospects for further improvement in bioactive compounds. Materials and Methods Growth and culture conditions. The haptophyta Pavlova pinguis (RCC 1539) was obtained from the Roscoff Culture Collection (RCC). The microalgal cultures were made by inoculating starter cultures into 1L of sterile f/2-Si medium with pH adjusted to 7.0 under 70 μmol m −2 s −1 light intensity with 16:8 h (light: dark cycles) at 25 °C. At the end of the logarithmic phase, the medium was centrifuged for 7 min. at 3720 g and the pellets washed. Microalgae growth was monitored daily with a Neubauer-improved counting chamber (Marienfield-Superior) and a light microscope (Olympus BX41) with a 40x magnification. The specific growth rate was determined as described in Fernandes, et al. 19 .

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“…17 Some species of microalgae photosynthesize and multiply at a higher rate with high accumulation of metabolic products. 17 Furthermore, some species of microalgae can produce up to 70% of lipids which are useful as biofuels, with concurrent production of some biorefinery products such as fertilizers, glycerin as well as other bioproducts such as polyunsaturated fatty acids, lectins, alginate, and carotenoids. Also, most green microalgae, such as Chlorella spp., Nannochloropsis oculata, Heamatococcus pluvialis, Spirulina platensis, Tetraselmis suecica are used for the production of biodiesel.…”

Section: Algae As a Resource In Bio-energymentioning

confidence: 99%

“…18 Current algal research emphases involve the use of algal biomass for the production of biofuel and treatment of wastewaters contaminated with industrial, agricultural and municipal wastes. 17,19,20 There are indications that anaerobic digestion of seaweeds gives a high yield of methane gas depending on the species and seasonal variation. Zhou et al 21 reported the production of bio-oil from Enteromorpha prolifera via hydrothermal liquefaction in a bioreactor at high temperatures (220-320 o C).…”

Section: Algae As a Resource In Bio-energymentioning

confidence: 99%