&amp;lt;i&amp;gt;Hydrothermal Liquefaction of Algae Grown on Brackish Dairy Wastewater&amp;lt;/i&amp;gt;

Audu, Meshack; Myint, Maung Thein; Cheng, Feng; Mallick, Kwonit; Jena, Umakanta; Nirmalakhandan, Nagamany; Brewer, Catherine E.

doi:10.13031/aim.201801158

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the algal cells kept for 24 h at 250 °C, about 27% of their starch has been metabolized into bioethanol. 150 Many firms have initiated the mass farming of marine algae species for bioethanol production. By fermentation of marine microalgae, like Skeletonema sp.…”

Section: Microalgae As a Source For Producing Various Forms Of Bioenergymentioning

confidence: 99%

See 1 more Smart Citation

Microalgal-Based Bioenergy: Strategies, Prospects, and Sustainability

2022

View full text Add to dashboard Cite

The fuel crisis with the slumping reserves of fossil fuels and the exponential increase in the demand of energy necessitate a paradigm shift to a more sustainable and eco-friendly energy system. Microalgal biofuel has been recognized as one of the most prominent and versatile alternative renewable energy sources because it can be converted into a wide array of biofuels, such as biodiesel, bioethanol, bioelectricity and biogases such as syngas, methane, hydrogen, and hythane etc., with a lower carbon emission profile. To attain the economic viability of algal fuels, a collective biorefinery approach addressing both the operational and technical limitations is quintessential. The current review critically analyzes and categorizes energy aspects of microalgae through various direct and indirect approaches with the perspective of a circular economy. These approaches include complicated thermochemical and biochemical processes integrating the recovery of a wide range of value-added products apart from biofuels, thus defining a cascading approach for a multiproduct-based biorefinery model. A glimpse of recent technological advancements comprising hybrid cultivation systems, prospects of co-culturing, and the role of automated/modeling approaches in the industrial-scale production of "algal-based bioenergy" is also discussed in detail. Further, the review has also scrutinized and highlighted the developments and bottlenecks in genetic and molecular aspects of strain improvement for bioenergy production. Furthermore, the study also correlated the socioeconomic and environmental impacts of producing this green energy by evaluating the prospects and pitfalls to obtain a holistic picture on this alternative fuel for a bio-based sustainable economy.

show abstract

Section: Microalgae As a Source For Producing Various Forms Of Bioenergymentioning

confidence: 99%

“…littorale generates ethanol using the dark fermentation method. With the algal cells kept for 24 h at 250 °C, about 27% of their starch has been metabolized into bioethanol …”

Section: Microalgae As a Source For Producing Various Forms Of Bioenergymentioning

confidence: 99%

Microalgal-Based Bioenergy: Strategies, Prospects, and Sustainability

2022

View full text Add to dashboard Cite

show abstract

“…): 11.7% to 30% of light oil and: 4% to 10% of heavy oil. [79] Monoculture: three microalgae species Polyculture: three-species 300 mL conical flasks with primarily treated municipal wastewater.…”

Section: Polyculture Of Microalgae Isolatedmentioning

confidence: 99%

“…Effluent quality of HRAP system compared with conventional wastewater treatment ponds in New Zealand (Integrated Tables 1 and 2 in Craggs et al [18]). The polyculture of native algal communities has been used for algae biomass production and wastewater treatment in open ponds and bioreactors (Table 3) [14,[16][17][18][19][26][27][28][76][77][78][79][80][81][82][83]. However, there is little information on the compositional dynamics of the native algal community in polyculture.…”

Section: Polyculture Of Microalgae Isolatedmentioning

confidence: 99%

Biocrude Oil Production by Integrating Microalgae Polyculture and Wastewater Treatment: Novel Proposal on the Use of Deep Water-Depth Polyculture of Mixotrophic Microalgae

Watanabe

Isdepsky

2021

Energies

View full text Add to dashboard Cite

Microalgae have attracted significant attention worldwide as one of the most promising feedstock fossil fuel alternatives. However, there are a few challenges for algal fuels to compete with fossil fuels that need to be addressed. Therefore, this study reviews the R&D status of microalgae-based polyculture and biocrude oil production, along with wastewater treatment. Mixotrophic algae are free to some extent from light restrictions using organic matter and have the ability to grow well even in deep water-depth cultivation. It is proposed that integrating the mixotrophic microalgae polyculture and wastewater treatment process is the most promising and harmonizing means to simultaneously increase capacities of microalgae biomass production and wastewater treatment with a low land footprint and high robustness to perturbations. A large amount of mixotrophic algae biomass is harvested, concentrated, and dewatered by combining highly efficient sedimentation through flocculation and energy efficient filtration, which reduce the carbon footprint for algae fuel production and coincide with the subsequent hydrothermal liquefaction (HTL) conversion. HTL products are obtained with a relatively low carbon footprint and separated into biocrude oil, solid, aqueous, and gas fractions. Algae biomass feedstock-based HTL conversion has a high biocrude oil yield and quality available for existing oil refineries; it also has a bioavailability of the recycled nitrogen and phosphorus from the aqueous phase of algae community HTL. The HTL biocrude oil represents higher sustainability than conventional liquid fuels and other biofuels for the combination of greenhouse gas (GHG) and energy return on investment (EROI). Deep water-depth polyculture of mixotrophic microalgae using sewage has a high potential to produce sustainable biocrude oil within the land area of existing sewage treatment plants in Japan to fulfill imported crude oil.

show abstract

<i>Hydrothermal Liquefaction of Algae Grown on Brackish Dairy Wastewater</i>

Cited by 2 publications

References 0 publications

Microalgal-Based Bioenergy: Strategies, Prospects, and Sustainability

Microalgal-Based Bioenergy: Strategies, Prospects, and Sustainability

Biocrude Oil Production by Integrating Microalgae Polyculture and Wastewater Treatment: Novel Proposal on the Use of Deep Water-Depth Polyculture of Mixotrophic Microalgae

Contact Info

Product

Resources

About