scholarly journals Optimal parameters and structural composition of bio-oil and biochar from intermediate pyrolysis of red algal biomass

2021 ◽  
Vol 24 (S1) ◽  
pp. 1-15
Author(s):  
Hassan Bouaik ◽  
Amine Tabal ◽  
Abdellatif Barakat ◽  
Khalifa El Harfi ◽  
Adil Aboulkas
Keyword(s):  
Algal Biomass ◽  
Optimal Parameters ◽  
Structural Composition ◽  
Bio Oil ◽  
Red Algal ◽  
Intermediate Pyrolysis

pH Neutralization of Aqueous Bio-Oil from Switchgrass Intermediate Pyrolysis Using Process Intensification Devices

2017 ◽  
Vol 31 (9) ◽  
pp. 9455-9464 ◽  
Author(s):  
Lydia Kyoung-Eun Park ◽  
Shoujie Ren ◽  
Sotira Yiacoumi ◽  
X. Philip Ye ◽  
Abhijeet P. Borole ◽  
...  
Keyword(s):  
Process Intensification ◽  
Bio Oil ◽  
Intermediate Pyrolysis ◽  
Ph Neutralization

Hydrothermal liquefaction of algal biomass to bio-oil

2022 ◽  
pp. 159-180
Author(s):  
Jonas Karl Christopher N. Agutaya ◽  
Armando T. Quitain ◽  
Yik Lam Kam ◽  
Siti Zullaikah ◽  
Joseph Auresenia ◽  
...  
Keyword(s):  
Algal Biomass ◽  
Hydrothermal Liquefaction ◽  
Bio Oil

The Upgrading of Bio-Oil from the Intermediate Pyrolysis of Waste Biomass Using Steel Slag as a Catalyst

2020 ◽  
Vol 8 (50) ◽  
pp. 18420-18432
Author(s):  
João Santos ◽  
Hessam Jahangiri ◽  
Muhammad Asif Bashir ◽  
Andreas Hornung ◽  
Miloud Ouadi
Keyword(s):  
Steel Slag ◽  
Waste Biomass ◽  
Bio Oil ◽  
Intermediate Pyrolysis

Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio-oil

2017 ◽  
Vol 36 (3) ◽  
pp. 781-787 ◽  
Author(s):  
Shaobo Liang ◽  
Liqing Wei ◽  
Maxine L. Passero ◽  
Kevin Feris ◽  
Armando G. McDonald
Keyword(s):  
Algal Biomass ◽  
Hydrothermal Liquefaction ◽  
Bio Oil

scholarly journals Enhancing Downstream Processing Of Algal-Based Biofuel Using Novel Fused Bacteria And Green Solvents

2021 ◽  
Author(s):  
Asma Fiayaz
Keyword(s):  
Extraction Method ◽  
Algal Biomass ◽  
Downstream Processing ◽  
Oil Extraction ◽  
Combination Method ◽  
Oil Yield ◽  
Green Solvents ◽  
Fusion Technique ◽  
Sugar Release ◽  
Bio Oil

The present study investigated the utilization of algal biomass to produce bio-oil and acetone, butanol, and ethanol (ABE) products. Novel Clostridia fusants (C. beijernickii + C. thermocellum-CbCt and C. acetobutylicum + C. thermocellocum-CaCt) were developed using protoplast fusion technique and subsequently subjected to UV radiation for strain enhancement. Resultant mutated fusants showed improvement in thermal stability and higher resistance to biobutanol toxicity. Algal biomass was initially subjected to various hydrolysis treatments prior to fermentation. Combination treatment of thermal, chemical, and enzymatic resulted in maximum sugar release of 27.78 g/L. Maximum biobutanol concentration from fermentation using CbCt resulted in 7.98 g/L. Fermentation using CaCt produced a concentration of 7.39 g/L. Oil extraction from virgin algae investigated a green, bio-based approach using terpenes with ultrasonication and a modified, Bligh and Dyer method, separately. Combination method, ultrasonication followed by the modified Bligh and Dyer, resulted in oil yield of 46.27% (dlimonene) and 39.85% (p-cymene). Oil extraction was also produced from an algae sample following fermentation. Combined extraction method using fermentation sample resulted in oil yield of 65.04%.

scholarly journals Ecological Engineering Helps Maximize Function in Algal Oil Production

2018 ◽  
Vol 84 (15) ◽  
Author(s):  
Sara L. Jackrel ◽  
Anita Narwani ◽  
Bastian Bentlage ◽  
Robert B. Levine ◽  
David C. Hietala ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Lipid Metabolism ◽  
Algal Biomass ◽  
Quality Metrics ◽  
Natural Ecosystems ◽  
High Quality ◽  
Algal Biofuels ◽  
Bio Oil ◽  
Lipid Metabolism Genes

ABSTRACT Algal biofuels have the potential to curb the emissions of greenhouse gases from fossil fuels, but current growing methods fail to produce fuels that meet the multiple standards necessary for economical industrial use. For example, algae grown as monocultures for biofuel production have not simultaneously and economically achieved high yields of the high-quality lipid-rich biomass desired for the industrial-scale production of bio-oil. Decades of study in the field of ecology have demonstrated that simultaneous increases in multiple functions, such as the quantity and quality of biomass, can occur in natural ecosystems by increasing biological diversity. Here, we show that species consortia of algae can improve the production of bio-oil, which benefits from both a high biomass yield and a high quality of biomass rich in fatty acids. We explain the underlying causes of increased quantity and quality of algal biomass among species consortia by showing that, relative to monocultures, species consortia can differentially regulate lipid metabolism genes while growing to higher levels of biomass, in part due to a greater utilization of nutrient resources. We identify multiple genes involved in lipid biosynthesis that are frequently upregulated in bicultures and further show that these elevated levels of gene expression are highly predictive of the elevated levels in biculture relative to that in monoculture of multiple quality metrics of algal biomass. These results show that interactions between species can alter the expression of lipid metabolism genes and further demonstrate that our understanding of diversity-function relationships from natural ecosystems can be harnessed to improve the production of bio-oil. IMPORTANCE Algal biofuels are one of the more promising forms of renewable energy. In our study, we investigate whether ecological interactions between species of microalgae regulate two important factors in cultivation—the biomass of the crop produced and the quality of the biomass that is produced. We found that species interactions often improved production yields, especially the fatty acid content of the algal biomass, and that differentially expressed genes involved in fatty acid metabolism are predictive of improved quality metrics of bio-oil. Other studies have found that diversity often improves productivity and stability in agricultural and natural ecosystems. Our results provide further evidence that growing multispecies crops of microalgae may improve the production of high-quality biomass for bio-oil.

Progress in Hydrothermal Liquefaction of Algal Biomass and Hydrothermal Upgrading of the Subsequent Crude Bio-Oil: A Mini Review

2020 ◽  
Vol 34 (10) ◽  
pp. 11723-11751 ◽  
Author(s):  
Oraléou Sangué Djandja ◽  
Zhicong Wang ◽  
Lei Chen ◽  
Liang Qin ◽  
Feng Wang ◽  
...  
Keyword(s):  
Algal Biomass ◽  
Hydrothermal Liquefaction ◽  
Bio Oil

scholarly journals Thermo-Catalytic Reforming of spent coffee grounds

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Mohamed Elmously ◽  
Nils Jäger ◽  
Andreas Apfelbacher ◽  
Robert Daschner ◽  
Andreas Hornung
Keyword(s):  
Calorific Value ◽  
Acid Number ◽  
Low Oxygen ◽  
Spent Coffee Grounds ◽  
Total Acid ◽  
Catalytic Reforming ◽  
Low Viscosity ◽  
Coffee Grounds ◽  
Bio Oil ◽  
Intermediate Pyrolysis

AbstractConversion of spent coffee grounds through the Thermo-Catalytic Reforming system (TCR®) is evaluated in this study. While, the TCR® is a technology that has been developed by Fraunhofer UMSICHT, which combines an intermediate pyrolysis and a catalytic reforming. The temperature of the catalytic reformer is varied between 500 and 700 °C to achieve an optimum yield quantities and qualities of the products. The hydrogen concentration is maximized at a reforming temperature of 700 °C, and a gas yield up to 52 wt% is achieved. The thermal stable bio-oil produced at 700 °C has the highest calorific value of 36.8 MJ/kg with significantly low oxygen and water content, low viscosity and low TAN (total acid number). Furthermore, the maximum bio-oil and char yields are obtained at the lowest reforming temperature of 500 °C. Overall spent coffee grounds show a great potential as feedstock in the Thermo-Catalytic Reforming for energy and bio-chemicals production.

scholarly journals Hydrothermal liquefaction of Malaysia's algal biomass for high‐quality bio‐oil production

2019 ◽  
Vol 19 (4) ◽  
pp. 246-269 ◽  
Author(s):  
Nor‐Insyirah Syahira Abdul Latif ◽  
Mei Yin Ong ◽  
Saifuddin Nomanbhay
Keyword(s):  
Algal Biomass ◽  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
High Quality ◽  
Bio Oil
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