scholarly journals CHORUME COMO FONTE DE NUTRIENTE NA PRODUÇÃO DA BIOMASSA MICROALGAL

e-xacta ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 11
Author(s):  
Najla Postaue ◽  
Leila Cristina Moraes ◽  
Rosa Maria Farias Asmus
Keyword(s):  
Fatty Acids ◽  
Culture Media ◽  
Biomass Conversion ◽  
Low Cost ◽  
Methyl Esters ◽  
Saturated Fatty Acids ◽  
Biodiesel Production ◽  
Microalgae Cultivation ◽  
Microalgal Biomass ◽  
Promising Source

A biomassa de microalgas tem apresentado potencial para produção de biodiesel, contudo a viabilidade do cultivo de microalgas depende de fonte de nutrientes de baixo custo. O presente estudo objetivou utilizar o chorume como fonte de nutrientes para microalgas. Os experimentos foram conduzidos visando avaliar a obtenção da biomassa microalgal, conversão de lipídios e rendimento em ésteres metílicos de ácidos graxos, para os meios de cultivos utilizando 5%, 12% e 20% de chorume, com concentrações de 0,02, 0,05 e 0,08 g N. L-1 e para meio de controle contendo 1% de, Nitrogênio (N), Fósforo (P) e Potássio (K), na concentração de 20 g L-1, 5 g L-1 e 20 g L-1, respectivamente. A microalga utilizada neste trabalho foi a de classe Chlorophyceae e família Coccomyxaceae. Os resultados demonstraram que o meio com concentração de 12% de chorume obteve melhores resultados, possibilitando alcançar 1,19 g de biomassa, conversão de 108,15 mg g-1 de lipídios e conteúdo de ésteres de 410,77mg g-1, a microalga utilizada apresentou ainda predominância dos ácidos graxos palmítico e oleico, apresentando baixa quantidade de ácidos graxos saturados o que pode fornecer ao combustível, resistência ao frio. E tais aspectos demonstraram que o chorume pode ser uma fonte promissora de nutrientes para o cultivo das microalgas estudadas. AbstractMicroalgae biomass has presented potential for biodiesel production, however the viability of microalgae cultivation depends on low cost nutrient source. The present study aimed to use leachate as a source of nutrients for microalgae. The experiments were conducted to evaluate the microalgal biomass, lipid conversion and yield in fatty acid methyl esters, for the culture media using 5%, 12% and 20% leachate, with concentrations of 0.02, 0.05 and 0.08 g N. L-1 and for control medium containing 1% Nitrogen (N), Phosphorus (P) and Potassium (K), at a concentration of 20 g L-1, 5 g L-1 and 20 g L-1, respectively. The microalgae used in this work was Chlorophyceae class and Coccomyxaceae family. The results showed that the medium with a concentration of 12% of leachate obtained better results, allowing to reach 1.19 g of biomass, conversion of 108.15 mg g-1 of lipids and esters content of 410,77 mg g-1. The microalgae used also presented predominance of palmitic and oleic fatty acids, presenting low amount of saturated fatty acids which can provide the fuel with cold resistance. And these aspects demonstrated that the leachate can be a promising source of nutrients for the cultivation of the studied microalgae.

scholarly journals Growth and Fatty Acid Profile of the Aspergillus terreus in Different Culture Media and Temperatures

2022 ◽  
Vol 11 (1) ◽  
pp. e37411125049
Author(s):  
Glalber Luiz da Rocha Ferreira ◽  
José Daniel Gonçalves Vieira ◽  
Emmanuel Bezerra D’Alessandro
Keyword(s):  
Fatty Acids ◽  
Fungal Biomass ◽  
Aspergillus Terreus ◽  
Culture Media ◽  
Methyl Esters ◽  
Saturated Fatty Acids ◽  
Biodiesel Production ◽  
Alternative Source ◽  
Promising Alternative ◽  
Combustion Properties

Fungi are a promising alternative source of oil to produce biodiesel, still very little known. The identification of a species with desirable characteristics is a fundamental component to achieve the economic viability of the process. The study aimed to carry out the evaluation of the fungus Aspergillus terreus in different culture media and different temperatures, the production of fungal biomass and in line with obtaining the profile of methyl esters of fatty acids. The fungal biomass revealed that in the NBRIP medium at both a temperature of 29 ºC and 36 ºC, it resulted in a great potential in the production of saturated fatty acids (SFA), which have excellent combustion properties, reaching values of 35.89 and 34,89%, respectively. For most species, the fuel would need to be mixed to make up culture conditions to be optimized and achieve the correct lipid profile, so that the fungal fuel meets European biodiesel production standards (EN 14214). Aspergillus terreus from iron ore tailings proved to be a promising microbial biomass as an energy source in the production of biodiesel.

scholarly journals Quantification of Seed Oil Content and Fatty Acid Profile of Jatropha cucas L. from Guizhou, China

2016 ◽  
Vol 8 (2) ◽  
pp. 92
Author(s):  
Hamidou SENOU ◽  
Cai X. ZHENG ◽  
Gabriel SAMAKE ◽  
Mamadou B. TRAORE ◽  
Fousseni FOLEGA ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Jatropha Curcas ◽  
Unsaturated Fatty Acids ◽  
Methyl Esters ◽  
Saturated Fatty Acids ◽  
Total Content ◽  
Biodiesel Production ◽  
Seed Oils ◽  
Fatty Acids Composition

<p class="1Body">The methyl esters of fatty acids composition of the oil from <em>jatropha curcas</em> seeds were analyzed by gas chromatography-mass spectrometer GC-MS. Fourteen components were found to be representative with 99.52% of the total content of seed oils. The main constituents were unsaturated fatty acids (71.93%) and saturated fatty acids (27.59%). For the saturated fatty acids composition such as palmitic and stearic acid, the rate was 15.80% and 10.79%, respectively. Linoleic acid (39.58%) and oleic acid (30.41%) were obtained in highest concentration among the unsaturated fatty acids identified in the seeds oil of <em>Jatropha curcas</em> from Guizhou. This value also justifies the fluidity of the oil at room temperature. A high percentage of polyunsaturated fatty acids (39.58%) and a slightly lower rate of monounsaturated fatty acids (32.35%) were also observed. The seed oils profile of Guizhou <em>Jatropha curcas</em> presents the desirable fatty acid C14 to C18 and interesting features for the biodiesel production.</p>

scholarly journals A highly efficient separation and physicochemical characteristics of saturated fatty acids from crude palm oil fatty acids mixture using methanol crystallisation method

OCL ◽  
2018 ◽  
Vol 25 (2) ◽  
pp. A203 ◽  
Author(s):  
Abd Al-Wali Japir ◽  
Jumat Salimon ◽  
Darfizzi Derawi ◽  
Badrul Hisham Yahaya ◽  
Murad Bahadi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Palm Oil ◽  
High Efficiency ◽  
Low Cost ◽  
Methyl Esters ◽  
Saturated Fatty Acids ◽  
Physicochemical Characteristics ◽  
Acid Mixture ◽  
Crude Palm Oil

The objective of the current study was to separate saturated fatty acids (SFAs) from high free fatty acid crude palm oil fatty acid mixture using the methanol crystallisation method. The development of methanol crystallisation method procedure was based on various parameters. The fatty acid composition was determined by using gas chromatography-flame ionisation detector (GC-FID) as Fatty Acid Methyl Esters. The highest percentage of SFAs was more than 89% with the percentage yield of 48.9% under the optimal conditions of the fatty acids-to-methanol ratio of 1:15 (w/v), the crystallisation temperature of −15 °C, and the crystallisation time of 24 hours, respectively. After a double crystallisation, the composition of separated SFAs contains 90% of palmitic acid (C16:0) as a major component and 5.8% of stearic acid (C18:0), respectively. Moreover, almost 4.2% of oleic acid (C18:1) was observed in the saturated solid product. Based on the results, the use of methanol as a crystallisation solvent is recommended because of its high efficiency, low cost, stability, obtainability, and comparative ease of recovery.

scholarly journals Herbal Industry Wastes as Potential Materials for Biofuel Production

Proceedings ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 6
Author(s):  
Aneta Sienkiewicz ◽  
Alicja Piotrowska-Niczyporuk ◽  
Andrzej Bajguz
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Unsaturated Fatty Acids ◽  
Methyl Esters ◽  
Saturated Fatty Acids ◽  
Research Work ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Gas Chromatography Mass Spectrometry ◽  
Ultrasound Assisted Extraction

Due to the increasing awareness of the depletion of fossil fuel resources and environmental issues, biodiesel as alternative fuel has become more and more attractive in the recent years. In this research, the characterization of herbal industry wastes as a potential feedstock for biodiesel production was carried out. There results of analytical identification of the fatty acid methyl esters (FAME) obtained in the transesterification reaction are presented. The reaction conditions were optimized, considering hexane ratio and catalyst concentration (methanol and KOH) for both steps. The FAME were extracted from the herbal samples by ultrasound-assisted extraction and subsequently were identified by gas chromatography-mass spectrometry (GC-MS) using single ion monitoring (SIM) method. Additionally, the selected properties of some bioesters were analyzed. This study determined the compounds which are ideal for fuel production. The unsaturated fatty acids were found in higher amounts than saturated fatty acids. Linoleic acid (C18:2n6c) was the major unsaturated fatty acid in herbal wastes, while palmitic acid (16:0) was the major saturated fatty acid. The application of the optimized method also revealed differences in the physical and chemical properties of isolated FAME mixtures compared to conventional diesel fuel. In this research work, for the first time, the possibilities of using the herbal industry wastes as a potential feedstock for biodiesel production are assessed.

scholarly journals Effect of nitrogen and potassium fertilization on the production and quality of oil in Jatropha curcas L. under the dry and warm climate conditions of Colombia

2014 ◽  
Vol 32 (2) ◽  
pp. 255-265 ◽  
Author(s):  
Omar Montenegro R. ◽  
Stanislav Magnitskiy ◽  
Martha C. Henao T.
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Jatropha Curcas ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Fruit Production ◽  
Biodiesel Production ◽  
Oil Composition

This study was conducted to assess fruit and seed yield, oil content and oil composition of Jatropha curcas fertilized with different doses of nitrogen and potassium in Espinal (Tolima, Colombia). The yields ranged from 4,570 to 8,800 kg ha-1 of fruits and from 2,430 to 4,746 kg ha-1 of seeds. These yields showed that the fertilizer dose of 150 kg ha-1 N + 120 kg ha-1K increased fruit production by 92% and seed production by 95%, which represents an increase of about 100% in oil production, which increased from 947 to 1,900 kg ha-1. The total oil content in the seeds ranged from 38.7 to 40.1% (w/w) with a high content of the unsaturated fatty acids oleic (> 47%) and linoleic acid (> 29%). The highest content of oleic acid in the seed oil was from the unfertilized control plants and plants with an application of 100 kg ha-1 of N and 60 kg ha-1 of K, with an average of 48%. The lowest content of oleic acid was registered when a low dose of nitrogen and a high level of potassium were applied at a ratio of 1:2.4 and doses of 50 kg ha-1 N + 120 kg ha-1 K, respectively. Low contents of the saturated fatty acids palmitic (13.4%) and stearic (7.26%) were obtained, making this oil suitable for biodiesel production. The nitrogen was a more important nutrient for the production and quality of oil in J. curcas than potassium under the studied conditions of soil and climate.

scholarly journals Bringing naturally-occurring saturated fatty acids into biomedical research

2021 ◽  
Author(s):  
Ke Xue ◽  
Shuyi Lv ◽  
Chunlei Zhu
Keyword(s):  
Fatty Acids ◽  
Liquid Phase ◽  
Biomedical Research ◽  
Low Cost ◽  
Saturated Fatty Acids ◽  
Heat Of Fusion ◽  
Melting Points ◽  
Naturally Occurring ◽  
Large Heat ◽  
Solid Liquid

Naturally-occurring saturated fatty acids (NSFAs) have emerged as a class of promising biomaterials due to their low cost, chemical stability, well-defined melting points, large heat of fusion, reversible solid-liquid phase...

scholarly journals An Integrated Methodology towards Mitigation of Global Warming and Biomass Production for Biodiesel using Chlorella sorokiniana BTA 9031

2019 ◽  
Vol 8 (4) ◽  
pp. 3054-3058
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Methyl Esters ◽  
Research Work ◽  
Co2 Concentration ◽  
Chlorella Sorokiniana ◽  
Biodiesel Production ◽  
Co2 Absorption ◽  
Microalgal Biomass ◽  
Microalgal Cultivation

The rise of atmospheric carbon dioxide (CO2 )concentration as well as depletion of fossil fuel reserves calls for the development of clean and ecofriendly alternative fuel source. Recently, lipid rich microalgal biomass is being extensively studied for generation of biodiesel however, the expensesincurred on production of microalgal biomassis a significant hurdle. Almost 80 % of the production costis generated from the cultivation medium which majorly comprise of carbon, nitrogen and phosphate. If the microalgal cultivation could be linked to a CO2 capturing unit than the cost of production could be reduced to a large extent. CO2 absorption by means of aqueous amine solvents is known to be a mature technology and could be integrated with microalgal cultivation unit for efficient utilization of the captured CO2 . In this present research work, blended solution of piperazine (PZ) and2-amino2-methyl-1-propanol (AMP) (5/25 wt. %) was used to capture CO2 and then the captured CO2 was utilized as an inorganic carbon stream for growing Chlorella sorokiniana BTA 9031 for biodiesel production. The CO2rate absorption was governed by series of process variablesviz.solvent flow rate ranges (1.5 to 3) ×10⁻4 m 3 min-1 , absorption temperature (298 to 313) K,concentration of CO2 (10 to 15) kPa and gas flow rate(5 to 8) ×10⁻3 m 3 min-1 . The detected final biomass strengthofChlorella sorokiniana BTA 9031 was0.955g L-1 . The fatty acid methyl esters (FAME) determinedsubsequentlyacid transesterification was observed to contain fatty acids suitable for biodiesel production.

scholarly journals Effects of nitrogen, phosphorus, EDTA and sodium chloride on biomass and lipid accumulation of Chaetomorpha aerea

2020 ◽  
pp. 152-158
Author(s):  
Gour Gopal Satpati ◽  
Ruma Pal
Keyword(s):  
Fatty Acids ◽  
Sodium Chloride ◽  
Total Lipid ◽  
Lipid Accumulation ◽  
Saturated Fatty Acids ◽  
Stress Conditions ◽  
Biodiesel Production ◽  
Cultural Conditions ◽  
Chaetomorpha Aerea ◽  
Nitrogen Phosphorus

The increase of total lipid and fatty acids production was studied under different nutrient stress conditions using the macroalga, Chaetomorpha aerea. The effects of nitrogen, phosphorus, ethylene diamine tetra-acetate and sodium chloride on the growth and lipid accumulation were systematically investigated in laboratory conditions. The biomass was harvested at different stages of cultivation and assessed. The maximum changes of growth and lipid accumulation were observed in the exponential phase at different cultural conditions. The two-fold increase of total lipid was found in the order of 28.27±0.04 % (at 0.1 g/L nitrogen) > 27.30±0.37 % (at 0.5 g/L of phosphorus) > 25.86±0.77 % (at 0.05 g/L of EDTA)> 24.37±0.04 % (at 0.05 g/L NaCl) on 8th day of cultivation. The fatty acids were identified and quantified by gas chromatography mass spectrometry (GC-MS). The alga produces significantly high amount of monounsaturated fatty acid (MUFA) and saturated fatty acids (SFA) than the polyunsaturated fatty acids (PUFA) in different cultural conditions. The elevated levels of C16:1, C18:1 and C20:1 was identified under nitrate, phosphate and salt stress conditions, which are more suitable for biodiesel production.

scholarly journals Trends in Widely Used Catalysts for Fatty Acid Methyl Esters (FAME) Production: A Review

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1085
Author(s):  
Shafaq Nisar ◽  
Muhammad Asif Hanif ◽  
Umer Rashid ◽  
Asma Hanif ◽  
Muhammad Nadeem Akhtar ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Large Scale ◽  
Heterogeneous Catalysts ◽  
Fatty Acid Methyl Esters ◽  
Low Cost ◽  
Methyl Esters ◽  
Acid Catalyst ◽  
Product Formation ◽  
Biodiesel Production ◽  
Acid Methyl

The effective transesterification process to produce fatty acid methyl esters (FAME) requires the use of low-cost, less corrosive, environmentally friendly and effective catalysts. Currently, worldwide biodiesel production revolves around the use of alkaline and acidic catalysts employed in heterogeneous and homogeneous phases. Homogeneous catalysts (soluble catalysts) for FAME production have been widespread for a while, but solid catalysts (heterogeneous catalysts) are a newer development for FAME production. The rate of reaction is much increased when homogeneous basic catalysts are used, but the main drawback is the cost of the process which arises due to the separation of catalysts from the reaction media after product formation. A promising field for catalytic biodiesel production is the use of heteropoly acids (HPAs) and polyoxometalate compounds. The flexibility of their structures and super acidic properties can be enhanced by incorporation of polyoxometalate anions into the complex proton acids. This pseudo liquid phase makes it possible for nearly all mobile protons to take part in the catalysis process. Carbonaceous materials which are obtained after sulfonation show promising catalytic activity towards the transesterification process. Another promising heterogeneous acid catalyst used for FAME production is vanadium phosphate. Furthermore, biocatalysts are receiving attention for large-scale FAME production in which lipase is the most common one used successfully This review critically describes the most important homogeneous and heterogeneous catalysts used in the current FAME production, with future directions for their use.

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