Hydrogen production from algal biomass via steam gasification

Duman, Gözde; Uddin, Md. Azhar; Yanık, Jale

doi:10.1016/j.biortech.2014.04.096

Cited by 177 publications

(54 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Algae can grow in sea water, ponds or in photobioreactors on marginal lands. However, few algae species are cultivated on an industrial scale (Duman et al, 2014). Various processes have been used for the production of bio-fuels from algal biomass including solvent extraction for bio-diesel, supercritical water gasification, and anaerobic digestion for bio-gas and liquefaction or pyrolysis for bio-oil (Neveux et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Aysu

Sanna

2015

Bioresource Technology

103

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Aysu

Sanna

2015

Bioresource Technology

103

View full text Add to dashboard Cite

“…In 2014 Duman et al used residues of Nannochloropsis oculata for gasification in fixed bed reactor at temperatures of 600-850ºC with water steam [94]. The results showed a conversion of carbon of 70% and a syngas composed mainly of H2 (50%) and CO2 (35%), while CH4 and CO were also found in proportions of 10 and 6%, respectively.…”

Section: Syngasmentioning

confidence: 99%

Microalgae biorefineries: applications and emerging technologies

Giraldo

Romo-Buchelly

Arbeláez-Pérez

et al. 2018

DYNA

View full text Add to dashboard Cite

Microalgae transform CO2 into a broad portfolio of biomolecules, and thus should be considered as a valuable biotechnological platform. Despite several research programs and global efforts to establish a sustainable microalgae-based industry, most applications have not transcended academic boundaries. This limitation raises from the high transformation costs when target products are biofuels or fertilizers. Microalgae biorefinery emerges as an alternative to improve economic competitiveness, as Under such a model scope, the process inputs come from industrial waste, while biomass exploitation prioritizes the highest value molecules followed by extraction of less valuable compounds. This review describes a wide range of microalgae exploitation schemes focused on new uses of its constituents, while discussing emerging technologies designed to improve production and efficiencies as well.Keywords: microalgae; biorefinery; biofuels; fertilizers; active biomolecules. Biorefinerías de microalgas: aplicaciones actuales y nuevas tecnologías en desarrolloResumen Las microalgas transforman el CO2 en un amplio portafolio de biomoléculas, por lo cual, son consideradas una valiosa plataforma biotecnológica. A pesar de múltiples programas de investigación y esfuerzos globales para establecer una industria sostenible basada en microalgas, la mayoría de las aplicaciones potenciales no han trascendido las fronteras académicas. Esta limitación se debe a los altos costos en la transformación del producto principalmente cuando se obtiene compuestos económicos como biocombustibles y fertilizantes. La biorefinería de microalgas surge como alternativa para incrementar la competitividad económica. En este modelo, los insumos del proceso provienen de residuos industriales, mientras que la explotación de la biomasa inicia con las moléculas de alto valor y finaliza con los compuestos menos valiosos. En esta revisión se describe un amplio abanico de esquemas de explotación de microalgas enfocado en nuevos usos de sus constituyentes. Además, se exploran las tecnologías emergentes destinadas a aprovechar esta biomasa de una manera más versátil y eficiente.

show abstract

“…The second technique is via the hydrothermal liquefaction (HTL) pathway that produces a water-insoluble bio-crude oil by using treatments at high pressure (5-20 MPa) 57 and at the temperature range of 250-450°C [7,8]. Other techniques, such as pyrolysis [9] and gasification [10,11], were also applied for converting algae to biofuels. However, these techniques have not been extensively studied yet, because of their inherent problems.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, an integrated biorefinery process for ALU pathway was established [6]. The second technique is via the hydrothermal liquefaction (HTL) pathway that produces a water-insoluble bio-crude oil by using treatments at high pressure (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) and at the temperature range of 250-450°C [7,8]. Other techniques, such as pyrolysis [9] and gasification [10,11], were also applied for converting algae to biofuels.…”

Section: Introductionmentioning

confidence: 99%

Standards and Protocols for Characterization of Algae-Based Biofuels

Yang

Zhang²,

Cui³

et al. 2016

Tr Ren Energy

View full text Add to dashboard Cite

Recently, algae have been considered as the third-generation biofuel feedstock, which can be converted to the precursor chemicals of drop-in fuels via either the algal lipid upgrading (ALU) pathway or the hydrothermal liquefaction (HTL) pathway. These precursors could be further processed and upgraded to fuels. This article reviews the standards and protocols that are suitable for characterization of drop-in algal biofuels. Applicable ASTM standards and European standards (EN) were summarized. The protocols that have been used by researches and the National Institute of Standards and Technology were also introduced. Keywords: Algae-Based Biofuels; ASTM Standards; European Standards (EN); Drop-in Algal Biofuel; Algal Lipid Upgrading (ALU); Hydrothermal Liquefaction (HTL) IntroductionAlgae are a big variety of photosynthetic organisms, while microalgae are prokaryotic or eukaryotic photosynthetic microorganisms that can grow rapidly and live in harsh conditions due to their unicellular or simple multicellular structure. It is estimated that more than 50,000 species exist, but only a limited number of algal species have been studied and analyzed [1]. Microalgae have the ability to mitigate greenhouse gases, and some species can accumulate oil with a high productivity, thereby having the potential for applications in producing the third-generation of biofuels [2].During the past decade, government agencies and the private sector had shown tremendous interests in algae related studies. Thus, the algal technologies for biofuels production have been greatly advanced [3]. The algal biofuel production cost was significantly reduced, and the advanced process options for the conversion of algal biomass into biofuels and bioproducts have been developed [4]. Currently, there are two approaches that were suggested by the US Department of Energy as the promising technologies for algal biomass conversion. The first approach is call the algal lipid upgrading (ALU) pathway, in which algal oils are extracted from the biomass via highpressure homogenization with hexane [5]. This approach was further improved by combining with a biological conversion route that converts carbohydrates in algae to ethanol. Therefore, an integrated biorefinery process for ALU pathway was established [6]. The second technique is via the hydrothermal liquefaction (HTL) pathway that produces a water-insoluble bio-crude oil by using treatments at high pressure (5-20 MPa) 57 and at the temperature range of 250-450°C [7,8]. Other techniques, such as pyrolysis [9] and gasification [10,11], were also applied for converting algae to biofuels. However, these techniques have not been extensively studied yet, because of their inherent problems.The products from ALU and HTL are crude algal oil and bio-crude oil, respectively. Due to the low selectivity of two pathways, both products contain impurities like heteroatoms, oxygenated compounds, and nitrogenated compounds. In order to synthesize algae-based drop-in fuels, it requires upgrading processes (such as crackin...

show abstract

Hydrogen production from algal biomass via steam gasification

Cited by 177 publications

References 37 publications

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Nannochloropsis algae pyrolysis with ceria-based catalysts for production of high-quality bio-oils

Microalgae biorefineries: applications and emerging technologies

Standards and Protocols for Characterization of Algae-Based Biofuels

Contact Info

Product

Resources

About