Sulfonated multi-walled carbon nanotubes for biodiesel production through triglycerides transesterification

Guan, Qingqing; Li, Yi; Chen, Yuan; Shi, Yuzhen; Gu, Junjie; Li, Bin; Miao, Rongrong; Chen, Qiuling; Ning, Ping

doi:10.1039/c6ra28067f

Cited by 131 publications

(79 citation statements)

References 38 publications

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“…One more reason for this improved performance was the in situ butanol removal using vacuum membrane distillation (VMD) which avoided the inhibition caused due to a high butanol concentration in the fermentation broth. Similar observations of enhanced butanol titer and butanol yield due to addition of butyrate and in situ butanol removal [99]. The VMD-based practices decreases the negative impact caused by the inhibitory effects of butanol.…”

Section: Fermentation Of By-product Glycerol Into Butanolsupporting

confidence: 70%

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Utilization of Microalgal Biofractions for Bioethanol, Higher Alcohols, and Biodiesel Production: A Review

et al. 2017

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Abstract:Biomass is a crucial energy resource used for the generation of electricity and transportation fuels. Microalgae exhibit a high content of biocomponents which makes them a potential feedstock for the generation of ecofriendly biofuels. Biofuels derived from microalgae are suitable carbon-neutral replacements for petroleum. Fermentation is the major process for metabolic conversion of microalgal biocompounds into biofuels such as bioethanol and higher alcohols. In this review, we explored the use of all three major biocomponents of microalgal biomass including carbohydrates, proteins, and lipids for maximum biofuel generation. Application of several pretreatment methods for enhancement the bioavailability of substrates (simple sugar, amino acid, and fatty acid) was discussed. This review goes one step further to discuss how to direct these biocomponents for the generation of various biofuels (bioethanol, higher alcohol, and biodiesel) through fermentation and transesterification processes. Such an approach would result in the maximum utilization of biomasses for economically feasible biofuel production.

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Section: Fermentation Of By-product Glycerol Into Butanolsupporting

confidence: 70%

“…In the present scenario, biodiesel has been produced through transesterification process using vegetable oil. However, the need of such catalysts along with high energy requirements are the major drawbacks of such chemical processes [99].…”

Section: Conversion Of Microalgal Lipid Fraction Into Biodiesel and Gmentioning

confidence: 99%

Utilization of Microalgal Biofractions for Bioethanol, Higher Alcohols, and Biodiesel Production: A Review

et al. 2017

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“…5(c). The broadband at 3445 cm −1 is attributed to the stretching of the OH group, which is related to the associated water and the stretching of the carbon nanotubes backbone 33,34 . The band at 2318 cm −1 is ascribed to the C≡N stretching and this is might be due to the nitrogen bonding in the CNTs from the melamine used in the study.…”

Section: Results and Discussion Of Lignocellulosic Biomass Characterimentioning

confidence: 99%

The production and application of carbon nanomaterials from high alkali silicate herbaceous biomass

Osman

Farrell

Al-Muhtaseb

et al. 2020

Sci Rep

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Herein, value-added materials such as activated carbon and carbon nanotubes were synthesized from low-value Miscanthus × giganteus lignocellulosic biomass. A significant drawback of using Miscanthus in an energy application is the melting during the combustion due to its high alkali silicate content. An application of an alternative approach was proposed herein for synthesis of activated carbon from Miscanthus × giganteus, where the produced activated carbon possessed a high surface area and pore volume of 0.92 cm 3 .g −1 after two activation steps using phosphoric acid and potassium hydroxide. The S Bet of the raw biomass, after first activation and second activation methods showed 17, 1142 and 1368 m 2 .g −1 , respectively. Transforming this otherwise waste material into a useful product where its material properties can be utilized is an example of promoting the circular economy by valorising waste lignocellulosic biomass to widely sought-after high surface area activated carbon and subsequently, unconventional multi-walled carbon nanotubes. This was achieved when the activated carbon produced was mixed with nitrogen-based material and iron precursor, where it produced hydrophilic multiwall carbon nanotubes with a contact angle of θ = 9.88°, compared to the raw biomass. synthesised materials were tested in heavy metal removal tests using a lead solution, where the maximum lead absorption was observed for sample AC-K, with a 90% removal capacity after the first hour of testing. The synthesis of these up-cycled materials can have potential opportunities in the areas of wastewater treatment or other activated carbon/carbon nanotube end uses with a rapid cycle time.

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“…X‐ray photoelectron spectroscopy (XPS) was performed to provide more insight of Ru encapsulation inside the COF cavities (Figure c). The deconvoluted C1s spectrum shows five peaks including C=CH−C at 284.7 eV, C−C=C at 285.5 eV, −C(=O)N at 286.1 eV, −C=O at 288.4 eV and −C=N 286.3 eV which is assigned for imine (Figure d) groups.…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Facile Hydrogen Evolution Using Ruthenium Encapsulated Two Dimensional Covalent Organic Framework (2D COF)

2019

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Two dimensional covalent organic frameworks (2D COFs) are unique class of crystalline porous polymers which are formed by the covalent bonding between the organic building blocks. Their layers are stacked to each other by non-covalent interactions. The stacking sequence between the layers is highly significant towards various applications. In this article, we have prepared ruthenium ions encapsulated 2D COF (Ru@COF) from a synthesized COF. We have performed an electrochemical hydrogen evolution reaction using Ru@COF as electrocatalyst. Moreover, Ru@COF shows better electrochemical hydrogen evolution reaction (HER) activity compared to bare RuCl 3 and COF. The HER activities are measured in 1.5 M H 2 SO 4 medium. Ru@COF shows onset potential 159 mV with the Tafel slope of 79 mV dec À 1 . The linear Tafel plot with the slope 79 mV dec À 1 indicates Volmer-Heyrovsky-Tafel mechanism for the Ru@COF catalysed HER. COF plays a crucial role in maintaining stability and catalytic efficiency of the material. Interestingly, Ru@COF acts as exemplary electrocatalyst material that is used as solid binder-free cathodic electrode on glassy carbon electrode surface.

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Sulfonated multi-walled carbon nanotubes for biodiesel production through triglycerides transesterification

Abstract: Effective solid acid catalysts play a key role to produce high-quality biodiesel through triglyceride transesterification.

Cited by 131 publications

References 38 publications

Utilization of Microalgal Biofractions for Bioethanol, Higher Alcohols, and Biodiesel Production: A Review

Utilization of Microalgal Biofractions for Bioethanol, Higher Alcohols, and Biodiesel Production: A Review

The production and application of carbon nanomaterials from high alkali silicate herbaceous biomass

Electrochemically Facile Hydrogen Evolution Using Ruthenium Encapsulated Two Dimensional Covalent Organic Framework (2D COF)

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