Lipid content in microalgae determines the quality of biocrude and Energy Return On Investment of hydrothermal liquefaction

Yoo, Gursong; Park, Min; Yang, Ji‐Won; Choi, Minkee

doi:10.1016/j.apenergy.2015.07.020

Cited by 72 publications

(40 citation statements)

References 51 publications

(72 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11,35,40,41 However, more severe temperatures may increase biocrude formation from the protein fraction, since it has been reported that biocrude samples created at higher temperatures have a higher nitrogen content. 12 Therefore, the reaction temperature of 400°C was also studied since fungal slurries contain a high level of proteins.…”

Section: Resultsmentioning

confidence: 99%

“…Improved energy return on investment can occur when lower HTL temperatures are employed with lipid-rich feedstocks. 41 As previous studies have shown that temperatures below 300°C result in decreased yields, 10 this fungal HTL process should be further investigated using lower temperatures to determine when temperature starts to become a significant factor.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Pilot-Scale Continuous-Flow Hydrothermal Liquefaction of Filamentous Fungi

2016

View full text Add to dashboard Cite

This study examined the potential of using the filamentous fungus Rhizopus oligosporus as a feedstock for hydrothermal liquefaction (HTL). The fungal biomass, cultivated in thin stillage from a corn ethanol plant, was processed at pilot-scale using a 1.5-L capacity continuous-flow HTL system. HTL operating conditions of 300−400°C at 27 MPa for 12−30 min were tested. Biocrude yields ranging from 48.2 to 60.9% were obtained. At low reaction temperatures (300°C), yields as high as 59.9% could still be achieved. Aside from the least severe reaction condition studied (300°C, 12 min), neither the yield nor elemental composition of the biocrude was significantly impacted by residence time or temperature, as is typically seen with batch reactors. Similarities in the biochemical and elemental composition between R. oligosporus and microalgae resulted in biocrude yields that were comparable to those previously reported for continuous-flow systems using microalgae. These findings demonstrate the viability of using fungal biomass as a feedstock for the HTL process, and they show that lower temperatures can be used at pilot-scale while still achieving maximal yields.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Pilot-Scale Continuous-Flow Hydrothermal Liquefaction of Filamentous Fungi

2016

View full text Add to dashboard Cite

show abstract

“…Subsequently, heating values are generally higher when more severe conditions are used (Elliott et al, 2015;Jazrawi et al, 2013). Typical HHVs for a lipid-rich feedstock like microalgae range from 21.8 -39.6 MJ/kg, with the low end of the range occurring at 200°C and the upper end occurring at 350°C (Yoo et al, 2015). An average heating value for HTL can be estimated to be about 35 MJ/kg (Zhu et al, 2014).…”

Section: Hhvmentioning

confidence: 99%

“…Once the biomass has undergone pretreatment (if this method is selected), the conversion process is then carried out. A water environment inside of a reactor reaches temperatures of 250 -400°C and pressures of 4-22 MPa (Elliott et al, 2015;Yoo et al, 2015;and Brown et al, 2010). At these conditions, water is at near-supercritical conditions.…”

Section: How Htl Workmentioning

confidence: 99%

“…To ensure sufficient biomass conversion is occurring, approximate temperatures need to be above 280°C and lower than 374°C (the supercritical temperature of water) . Therefore, the optimum temperatures generally regarded for biocrude production fall between 300 -350°C (Garcia et al, 2012;Yoo et al, 2015;Tian et al, 2014;and Brown et al, 2010).…”

Section: Operating Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Pilot-scale continuous-flow hydrothermal liquefaction of filamentous fungi cultivated in thin stillage

Suesse¹

View full text Add to dashboard Cite

Algae as a promising resource for biofuel industry: facts and challenges

Köse

Öncel

2016

Int. J. Energy Res.

View full text Add to dashboard Cite

Summary Energy is the main driving force of society today that should be handled as a whole starting from production to consumption. With the rapid increase in the energy necessity, alternative methods and sources are becoming a crucial topic that should be scientifically highlighted with all their pros and cons. Especially the problems related to the fossil sources of energy triggered the search on the renewable alternatives like algae. In order to reach the desired amounts of energy with the satisfactory quality and quantity, understanding the algae as a living thing with the biological mechanism and existing production technologies are the key points to have a projection for commercialization. In this regard, technical facts and challenges on algal biofuel production should be evaluated. Keeping in mind the specifications and possible advantages related to their taxonomy, algae can serve as a promising source to reduce fossil fuel consumption. With the progress in the modern technology, reaching an effective production process will be possible, and this will help the algal biofuels to prove their maturity as a sustainable source for future. Within this context, the aim of this review is to point out the crucial technical challenges about algal fuels comprising both the macroalgae and microalgae as a reliable source of renewable energy. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

Lipid content in microalgae determines the quality of biocrude and Energy Return On Investment of hydrothermal liquefaction

Cited by 72 publications

References 51 publications

Pilot-Scale Continuous-Flow Hydrothermal Liquefaction of Filamentous Fungi

Pilot-Scale Continuous-Flow Hydrothermal Liquefaction of Filamentous Fungi

Pilot-scale continuous-flow hydrothermal liquefaction of filamentous fungi cultivated in thin stillage

Algae as a promising resource for biofuel industry: facts and challenges

Contact Info

Product

Resources

About