Large-scale biodiesel production using microalgae biomass of Nannochloropsis

Moazami, Nader; Ashori, Alireza; Ranjbar, Reza; Tangestani, Mehrnoush; Eghtesadi, Roghieh; Nejad, Ali Sheykhi

doi:10.1016/j.biombioe.2012.01.046

Cited by 176 publications

(66 citation statements)

References 12 publications

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“…However, low culture density, low biomass productivity, contamination, susceptibility to weather events such as rainfall, and high evaporative losses in open ponds are major drawbacks hindering commercialization of this approach [45,46]. PBRs are closed to the atmosphere and have several advantages over ponds: (1) the risk of contamination is reduced; (2) the growth parameters (e.g., temperature) can be better controlled; (3) they have higher volumetric productivities and cell concentrations due to a higher surface-to-volume (S/V) ratio; and (4) these closed systems eliminate or strongly reduce evaporation and thus conserve water [47,48]. Although few PBR designs have been explored at the pilot level, the high capital and operating costs of PBRs are the major hurdles for their large-scale implementation for biofuel production and they still await evaluation at real scale [18].…”

Section: High Capital and Operating Costs Hamper Commercial-scale Algmentioning

confidence: 99%

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

et al. 2015

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Section: High Capital and Operating Costs Hamper Commercial-scale Algmentioning

confidence: 99%

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

et al. 2015

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“…Nannochloropsis cells reproduce asexually, dividing to yield two daughter cells that then shed their mother cell wall (2,3). Several Nannochloropsis species have been studied as candidate production strains in large-scale biofuel facilities because of their hardy outdoor growth profiles and high lipid yields (4)(5)(6)(7)(8)(9). They are also producers of valuable pigments (10) and nutritive oils (11,12) and are commonly used as an aquaculture feed (13).…”

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confidence: 99%

Ultrastructure and Composition of the Nannochloropsis gaditana Cell Wall

et al. 2014

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e Marine algae of the genus Nannochloropsis are promising producers of biofuel precursors and nutraceuticals and are also harvested commercially for aquaculture feed. We have used quick-freeze, deep-etch electron microscopy, Fourier transform infrared spectroscopy, and carbohydrate analyses to characterize the architecture of the Nannochloropsis gaditana (strain CCMP 526) cell wall, whose recalcitrance presents a significant barrier to biocommodity extraction. The data indicate a bilayer structure consisting of a cellulosic inner wall (ϳ75% of the mass balance) protected by an outer hydrophobic algaenan layer. Cellulase treatment of walls purified after cell lysis generates highly enriched algaenan preparations without using the harsh chemical treatments typically used in algaenan isolation and characterization. Nannochloropsis algaenan was determined to comprise long, straight-chain, saturated aliphatics with ether cross-links, which closely resembles the cutan of vascular plants. Chemical identification of >85% of the isolated cell wall mass is detailed, and genome analysis is used to identify candidate biosynthetic enzymes.

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“…Thus, selection of species capable of producing a high lipid content can support an efficient and sustainable production chain (Suali & Sarbatly, 2012). It has been reported that lipid extraction protocols that employ chloroform and methanol mixtures are used in many studies (Phukan et al, 2011;Nigam et al, 2011;Moazami et al, 2012). This mixture of solvents extracts not only neutral lipids but also polar lipids and pigments, which overestimates the lipid content that can be converted into biodiesel (mixtures of methyl or ethyl esters of fatty acid).…”

Section: Resultsmentioning

confidence: 99%

“…As a consequence of these factors, the production of algal biomass is lower when compared to cultures in closed systems, also called photobioreactors (Santos et al, 2013). However, the low operational and maintenance costs of open systems, the possibility of taking advantage of agroindustrial residues, and the ease of operation of the crop units have encouraged several authors to examine feasible outdoor crops (Park et al, 2011;Chiaramonti et al, 2013;Waller et al, 2012, Moazami et al, 2012. Considering the above, this work had the objective of evaluating and comparing cultures in outdoor open tanks of Scenedesmus obliquus BR003 in ARP, aiming at the production of biomass, carbohydrates and lipids, which comprise the raw materials needed to produce ethanol and biodiesel.…”

Section: Introductionmentioning

confidence: 99%

OUTDOOR CULTIVATION OF Scenedesmus obliquus BR003 IN STIRRED TANKS BY AIRLIFT

et al. 2017

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ABSTRACT:The use of microalgae as a source of raw material for biofuel production has been highly targeted. Compared to other biological options for the capture and use of CO2, microalgae crops have the following advantages: high productivity, lack of competition with feed and foodbased products, use of unproductive and non-arable land, and allowance of the use of wastewater for its cultivation. The use of wastewater from industrial, agricultural, and domestic sewage has been indicated as an alternative means to reduce the cost of crops, since such waste is generally released into the environment without previous treatment. This work addresses the use of petrochemical wastewater (ARP) from effluent produced at the Gabriel Passos Refinery (Petrobrás refinery unit) for the cultivation of a strain of Scenedesmus obliquus BR003. Twelve experimental units of 20 L each were constructed in the experimental area of the Biofuel Laboratory of the Federal University of Viçosa, Minas Gerais, Brazil in an uncontrolled environment, and the cultures were evaluated by quantification of total carbohydrates, total lipids, dry biomass, and growth evaluated by absorbance. The results showed that the wastewater from petrochemical effluent is an efficient growth medium for the growth of Scenedesmus obliquus BR003 microalgae for large-scale cultivation on land that is not suitable for other agricultural crops.

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Large-scale biodiesel production using microalgae biomass of Nannochloropsis

Cited by 176 publications

References 12 publications

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

Ultrastructure and Composition of the Nannochloropsis gaditana Cell Wall

OUTDOOR CULTIVATION OF Scenedesmus obliquus BR003 IN STIRRED TANKS BY AIRLIFT

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