Synergism of clay with zinc oxide as nanocatalyst for production of biodiesel from marine Ulva lactuca

Kalavathy, G.; Baskar, G.

doi:10.1016/j.biortech.2019.02.101

Cited by 50 publications

(15 citation statements)

References 12 publications

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“…It is derived as monoalkyl esters of long-chain fatty acids and is usually produced from algal oils, waste cooking oil, and edible and non-edible oils [ 25 ]. Kalavathy et al [ 26 ] used Ulva lactuca as feedstock for the production of biodiesel and silica doped with zinc oxide as a heterogeneous nanocatalyst for the transesterification process. The lipid content of algal biomass was extracted by an autoclave followed by the ultra-sonication method, and the extraction of oil was carried out in the Soxhlet apparatus using solvent mixture of n-hexane and methyl tertbutyl ether.…”

Section: Green Seaweeds and Their Applicationsmentioning

confidence: 99%

“…It was found that the maximum oil was extracted at optimal conditions of 5% moisture content of algal biomass, 0.15 mm size of biomass, and solvent/solid ratio of 6:1 at 55 °C in 140 min. The maximum biodiesel yield of 97.43% was obtained at optimized conditions of 800 °C calcination temperature, 8% catalyst concentration, 9:1 methanol to oil ratio, 55 °C reaction temperature, and 50 min reaction time [ 26 ]. Khan et al [ 27 ] used Ulva fasciata as feedstock for the production of biodiesel.…”

Section: Green Seaweeds and Their Applicationsmentioning

confidence: 99%

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A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

et al. 2020

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This short review analyzed the recent trend towards, progresses towards the preparation of chemicals of, and value-added biomaterials from marine macroalgae resources, especially green seaweeds and their derived ulvan polysaccharides for various applications. In recent years, ulvan both in pristine and modified forms has gained a large amount of attention for its effective utilization in various areas due to its unique physiochemical properties, lack of exploration, and higher green seaweed production. The pristine form of ulvan (sulfated polysaccharides) is used as a bio-component; food ingredient; or a raw material for the production of numerous chemicals such as fuels, cosmetics, and pharmaceuticals, whereas its modified form is used in the sector of composites, membranes, and scaffolds, among others, because of its physicochemical properties. This review highlights the utilization of green seaweed and its derived ulvan polysaccharides for the preparation of numerous chemicals (e.g., solvents, fuel, and gas) and also value-added biomaterials with various morphologies (e.g., gels, fibers, films, scaffolds, nanomaterials, and composites).

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Section: Green Seaweeds and Their Applicationsmentioning

confidence: 99%

Section: Green Seaweeds and Their Applicationsmentioning

confidence: 99%

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

et al. 2020

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“…6. Further increase in moisture content reduced the yield since the penetration of hexane into the trichosanthes cucumerina seed, and the higher moisture content functioned as the barrier for bio-oil extraction [28][29][30] . The higher percentage of yield (28.01 ± 0.3%) was observed at 6% of moisture content, by keeping other parameters as constant (size of seed as 0.21 mm, extraction time of 270 min, at 68 °C and the solvent-to-seed ratio of 6:1 ml/g hexane).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of bio-oil from waste Trichosanthes cucumerina seeds: a substitute for conventional fuel

Manimaran

Kumar

Narayanan

2020

Sci Rep

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The present study explores the methodology for the synthesis of bio-oil from waste trichosanthes cucumerina seeds by the solvent extraction method. It investigates the yield percentage, concentration of free fatty acids and acid contents in the extracted bio-oil. Effects of size of the crushed seeds, moisture content, extraction time, solvent to seed ratio and extraction temperatures were examined. The non-polar hexane solvent resulted in a higher percentage of oil yield (28.4 ± 0.4%) for the crushed seed size of 0.21 mm, 6% moisture content, 270 min extraction time, 68 °C temperature and 6:1(ml/g) of solvent to seed ratio. The synthesized bio-oil was characterized using Fourier Transform Infra-Red spectrum and Gas Chromatography–Mass Spectroscopy analysis. The properties of the bio-oil and biodiesel were assessed according to the American Society for Testing and Materials and the Association of Official Analytical Chemists standards. The obtained methyl-ester by trans-esterification process results in the fuel properties closer to the conventional fuel. Thus, Trichosanthes cucumerina bio-diesel can be used as a potential substitute.

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“…The maximum biodiesel yield of 97.43% was achieved at the optimized calcination temperature (1073.15 K), with a catalyst concentration of 8%, along with 9:1 methanol-to-oil ratio, 328.15 K reaction temperature, and 50 min reaction time. The marine microalgae Ulva lactuca was found to be a potential source for biodiesel production [76].…”

Section: Zro 2 -Based Catalystsmentioning

confidence: 99%

Biodiesel Production Using Solid Acid Catalysts Based on Metal Oxides

et al. 2020

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The development of solid acid catalysts, especially based on metal oxides and different magnetic nanoparticles, gained much awareness recently as a result of the development of different nano-based materials. Solid acid catalysts based on metal oxides are promising for the (trans)esterification reactions of different oils and waste materials for biodiesel production. This review gives a brief overview of recent developments in various solid acid catalysts based on different metal oxides, such as zirconia, zinc, titanium, iron, tungsten, and magnetic materials, where the catalysts are optimized for various reaction parameters, such as the amount of catalyst, molar ratio of oil to alcohol, reaction time, and temperature. Furthermore, yields and conversions for biodiesel production are compared. Such metal-oxide-based solid acid catalysts provide more sustainable, green, and easy-separation synthesis routes with high catalytic activity and reusability than traditionally used catalysts.

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Synergism of clay with zinc oxide as nanocatalyst for production of biodiesel from marine Ulva lactuca

Cited by 50 publications

References 12 publications

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

Synthesis of bio-oil from waste Trichosanthes cucumerina seeds: a substitute for conventional fuel

Biodiesel Production Using Solid Acid Catalysts Based on Metal Oxides

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