scholarly journals Opportunities Surrounding the Use of Sargassum Biomass as Precursor of Biogas, Bioethanol, and Biodiesel Production

2022 ◽  
Vol 8 ◽  
Author(s):  
Jorge Gabriel Orozco-González ◽  
Fernando Amador-Castro ◽  
Angela R. Gordillo-Sierra ◽  
Tomás García-Cayuela ◽  
Hal S. Alper ◽  
...  
Keyword(s):  
Brown Algae ◽  
Value Added ◽  
Local Economy ◽  
Biodiesel Production ◽  
Commercial Application ◽  
Mexican Caribbean ◽  
Challenges And Opportunities ◽  
Multiple Value ◽  
Potential Use ◽  
Value Added Products

Climate change (along with other factors) has caused an increase in the proliferation of brown algal mats floating freely along the Atlantic Ocean since 2011. These brown algae mats are composed of sea plants from the Sargassum genus. The gargantuan agglomeration of biomass flows alongside currents and lands in beaches belonging to the Eastern coasts of the Mexican Caribbean and several other countries in the region. These events, dubbed golden tides, harm the local economy and environment. Current elimination approaches involve the mechanical harvesting of the Sargassum and ultimate landfill disposal. However, explorations into the commercial application of other brown algae have elucidated the potential of Sargassum as a feedstock for valorization. This review informs the trends, challenges, and opportunities presented by the coastal invasion of this biomass. Primarily, the potential use of this material is as a precursor in biorefineries where multiple value-added products are generated concurrent with the ultimate production of biofuels.

scholarly journals Value-Added Products from Urea Glycerolysis Using a Heterogeneous Biosolids-Based Catalyst

Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 373 ◽  
Author(s):  
Mattia Bartoli ◽  
Chengyong Zhu ◽  
Michael Chae ◽  
David Bressler
Keyword(s):  
Weight Ratio ◽  
Value Added ◽  
Economic Feasibility ◽  
Biodiesel Production ◽  
Wastewater Management ◽  
Thermal Hydrolysis ◽  
Process Economics ◽  
Air Stream ◽  
Increasing Temperature ◽  
Value Added Products

Although thermal hydrolysis of digested biosolids is an extremely promising strategy for wastewater management, the process economics are prohibitive. Here, a biosolids-based material generated through thermal hydrolysis was used as a catalyst for urea glycerolysis performed under several conditions. The catalytic system showed remarkable activity, reaching conversion values of up to 70.8 ± 0.9% after six hours, at 140 °C using a catalyst/glycerol weight ratio of 9% and an air stream to remove NH3 formed during the process. Temperature played the most substantial role among reaction parameters; increasing temperature from 100 °C to 140 °C improved conversion by 35% and glycidol selectivity by 22%. Furthermore, the catalyst retained good activity even after the fourth catalytic run (conversion rate of 56.4 ± 1.3%) with only a slight decrease in glycidol selectivity. Thus, the use of a biosolids-based catalyst may facilitate conversion of various glycerol sources (i.e., byproduct streams from biodiesel production) into value-added products such as glycidol, and may also improve the economic feasibility of using thermal hydrolysis for treatment of biosolids.

scholarly journals Valorization of Biodiesel Byproduct Crude Glycerol for the Production of Bioenergy and Biochemicals

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 609 ◽  
Author(s):  
Niravkumar Mahendrasinh Kosamia ◽  
Mahdieh Samavi ◽  
Bijaya Kumar Uprety ◽  
Sudip Kumar Rakshit
Keyword(s):  
Rapid Growth ◽  
Crude Glycerol ◽  
Value Added ◽  
Biodiesel Production ◽  
Microbial Lipid ◽  
Research Focus ◽  
Ongoing Research ◽  
Glycerol Conversion ◽  
Effective Utilization ◽  
Value Added Products

The rapid growth of global biodiesel production requires simultaneous effective utilization of glycerol obtained as a by-product of the transesterification process. Accumulation of the byproduct glycerol from biodiesel industries can lead to considerable environment issues. Hence, there is extensive research focus on the transformation of crude glycerol into value-added products. This paper makes an overview of the nature of crude glycerol and ongoing research on its conversion to value-added products. Both chemical and biological routes of glycerol valorization will be presented. Details of crude glycerol conversion into microbial lipid and subsequent products will also be highlighted.

scholarly journals A Novel Biodiesel and Glycerol Carbonate Production Plant

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Nghi T. Nguyen ◽  
Yaşar Demirel
Keyword(s):  
Net Present Value ◽  
Economic Value ◽  
Value Added ◽  
Biodiesel Production ◽  
Glycerol Carbonate ◽  
Production Plant ◽  
Present Value ◽  
Carbonate Production ◽  
Market Values ◽  
Value Added Products

Crude glycerol is the byproduct of biodiesel production plant and the economic value of glycerol may affect the profitability of the biodiesel production plant. As the production rate of bioglycerol increases, its market values drop considerably. Therefore, conversion of bioglycerol into value-added products can reduce the overall cost, hence, leading to a more economical biodiesel production plant. In a direct carboxylation reaction, CO2 reacts with glycerol to produce glycerol carbonate and water. This study presents a direct comparison of the economic analysis of the conventional biodiesel production plant and the possible next generation biodiesel-glycerol carbonate production plant. At the end of 15-year project, the net present value of the biodiesel-glycerol carbonate production plant is $13.21 million higher than the conventional biodiesel plant. The stochastic model has predicted that the biodiesel-glycerol carbonate and conventional biodiesel production plants has about 30% and 63% chance of getting negative net present value, respectively. Heterogeneous catalyst, Ca3La1, is used for transesterification reaction to reduce separation steps in the biodiesel production process.

scholarly journals Microwave-Assisted Glycerol Etherification Over Sulfonic Acid Catalysts

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1584 ◽  
Author(s):  
Laura Aguado-Deblas ◽  
Rafael Estevez ◽  
Marco Russo ◽  
Valeria La Parola ◽  
Felipa M. Bautista ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Sulfonic Acid ◽  
Value Added ◽  
Biodiesel Production ◽  
Important Goal ◽  
N2 Adsorption ◽  
Active Systems ◽  
X Ray ◽  
Value Added Products ◽  
Structure Properties

Glycerol is the main by-product of biodiesel production. For this reason, its valorization into value-added products, by using green procedures, represents an important goal. Different sulfonic acid silica- or titania-based catalysts were prepared, characterized and tested in the glycerol etherification process, assisted by microwaves, in order to obtain biodiesel additives. The surface and structural properties of the catalysts were investigated by means of N2 adsorption isotherms, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and acid capacity measurements by X-Ray Fluorescence Spectroscopy (XRF). The best performance in terms of activity was achieved in the presence of the sulfonic function directly linked to the amorphous silica. By the correlation of the structure properties of the materials and their activity, the performance of the catalysts was shown to be influenced mainly by the surface area, pore volume and acidity. Recycling experiments performed over the most active systems showed that the sulfonic silica-based materials maintained their performance during several cycles.

Yellow Oleander (Thevetia peruviana) Seed as a Potential Bioresource for Industrial Applications

2020 ◽  
Vol 17 (7) ◽  
pp. 855-871 ◽  
Author(s):  
Bidangshri Basumatary ◽  
Biswajit Nath ◽  
Pranjal Kalita ◽  
Bipul Das ◽  
Sanjay Basumatary
Keyword(s):  
Animal Feed ◽  
Raw Materials ◽  
Value Added ◽  
Industrial Applications ◽  
Edible Oil ◽  
Edible Fruit ◽  
Thevetia Peruviana ◽  
High Concern ◽  
Potential Use ◽  
Value Added Products

Raw materials from renewable natural resources for industrial applications are in high concern in recent industrial research. Researchers invest their time in the management of waste as well as the conversion of waste to wealth. In that line, the production of biofuels including biodiesel, and value-added products from non-edible oil sources as well as from the generated waste biomasses, are in the tilt of research in recent times. Preparation of different oleochemicals such as grease, resins, soap, lubricants, etc. from vegetable oils, and utilization of seed cake as fertilizer, animal feed, medicine, etc. are encouraged as a part of the generation of waste to wealth as per today’s environment is concerned. In recent days, various reports on the production of biodiesel and other oleochemicals from non-edible oil sources are published in various scientific journals. Yellow oleander (Thevetia peruviana) is a tropical shrub which produces a toxic non-edible fruit containing a high percentage of seed oil (up to 67%), protein (30-37%) as well as other medicinally important phytochemicals. It is attracting the researchers worldwide for the production of biodiesel, various oleochemicals, medicine, animal feed, etc. In this study, biodiesel and various value-added products synthesized from Thevetia peruviana oil and cake are reviewed to generate and popularize the potential use of yellow oleander seed for various industrial applications and accordingly, for substantial growth in cultivation for commercial-scale requirements.

scholarly journals Developing diatoms for value-added products: challenges and opportunities

2015 ◽  
Vol 32 (6) ◽  
pp. 547-551 ◽  
Author(s):  
Weiqi Fu ◽  
Kristine Wichuk ◽  
Sigurður Brynjólfsson
Keyword(s):  
Value Added ◽  
Challenges And Opportunities ◽  
Value Added Products

scholarly journals Isolated Microorganisms for Bioconversion of Biodiesel-Derived Glycerol Into 1,3-Propanediol

2017 ◽  
Vol 74 (2) ◽  
pp. 43 ◽  
Author(s):  
Laura MITREA ◽  
Lavinia Florina CĂLINOIU ◽  
Gabriela PRECUP ◽  
Maria BINDEA ◽  
Bogdan RUSU ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Value Added ◽  
Biodiesel Production ◽  
Bacterial Strains ◽  
Nutrient Source ◽  
Raw Glycerol ◽  
Waste Glycerol ◽  
Microbial Development ◽  
High Concentrations ◽  
Value Added Products

During biodiesel production, massive amounts of raw glycerol are created generating an environmental issue and the same time an increase of biodiesel production cost at the same time. This raw glycerol could be converted by specific strains into value-added products, like 1,3-propanediol (1,3-PD), an important monomer used in the synthesis of biodegradable polyesters.The present work is based on recent scientific articles and experimental studies on the targeted topic, namely on the use of bacterial strains for bioconversion of biodiesel-derived glycerol into valuable products, like 1,3-PD. Concentrations, yields and productivity of 1,3-PD are presented for various bacterial strains. Important results as respects the microbial bioconversion of biodiesel-derived glycerol into 1,3-PD were registered for strains like Klebsiella pneumoniae, Citrobacter freundii, Escherichia coli and Lactobacillus diolivorans.From this study can be concluded that waste glycerol may be used as a nutrient source for microbial development and the production of 1,3-propanediol with high concentrations and yields.

scholarly journals Effect of Bi modification on Pt single crystals towards the glycerol electrooxidation in alkaline media

2019 ◽  
Author(s):  
Victor Yoiti Yukuhiro ◽  
Pablo Sebastian Fernandez ◽  
Matheus B. C. de Souza ◽  
Rafael A. Vicente ◽  
Cléo T. G. V. M. T. Pires
Keyword(s):  
Single Crystals ◽  
Value Added ◽  
Biodiesel Production ◽  
Alkaline Media ◽  
Reaction Pathways ◽  
High Demand ◽  
Catalyst Structure ◽  
Glycerol Electrooxidation ◽  
Industrial Demand ◽  
Value Added Products

The high demand for the biodiesel has increased the glycerol (GlOH) generation, since it is a co-product of biodiesel production, surpassing the industrial demand. In this context, the glycerol electrooxidation reaction (GER) is an interesting option for its chemical valorization, generating high value-added products. In the present work, we studied the GER on different surfaces of Pt single crystals modified with bismuth to understand the effect of the catalyst structure on the activity and reaction pathways.

Sign in / Sign up

Export Citation Format

Share Document