Biochar as porous media for thermally-induced non-catalytic transesterification to synthesize fatty acid ethyl esters from coconut oil

Jung, Jong‐Min; Lee, Jechan; Choi, Dongho; Oh, Jeong-Ik; Lee, Sang-Ryong; Kim, Jae-Kon; Kwon, Eilhann E.

doi:10.1016/j.enconman.2017.05.009

Cited by 22 publications

(12 citation statements)

References 48 publications

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“…Figure 5 shows the characteristic absorption spectra of Ag NPs. These results reveal that Ag NPs were successfully synthesized, showing characteristic absorptions from 410 to 420 nm, corresponding to Ag surface plasmon vibrations (Jung et al, 2017). We detected that the amount of reduced silver was roughly proportional to the quantity of surfactant.…”

Section: Resultsmentioning

confidence: 92%

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Studies on the effect of long‐chain and head groups of nonionic surfactants synthesized from palm and coconut oil on the formation of silver nanoparticles

Vázquez‐Vélez¹,

Martı́nez²,

Kesarla³

et al. 2022

J Surfact & Detergents

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Four fatty amides were synthesized using coconut and palm oil sources. The chemical structure of the as-prepared fatty acids was confirmed using Fourier Transform Infrared (FT-IR) and 1 H, 13 C NMR spectroscopy. The effect of different chain lengths and head groups of these compounds on Ag nanoparticles (NPs) synthesis was investigated. Ultraviolet-visible spectroscopic studies showed characteristic absorbance peaks (λ max ≈ 410 nm). FT-IR results indicated that the surfactant functionalities are responsible for the Ag NPs stability. The effect of fatty amides on the morphology and size distribution of the Ag NPs was investigated using transmission electron microscope (TEM). The TEM micrographs showed the formation of fine spherical morphology due to surfactant-mediated self-assembly with an average particle size of 1-3 nm. Dynamic light scattering (DLS) analysis showed the micellar self-assembly of Ag NPs-fatty amides. The effect of surfactant on the solution behavior was analyzed using surface tension measurements. Cocamide and palm DEA showed relatively low free energy (ΔG mic ) values, resulting in smaller particles with good distribution. Finally, the Ag NPs showed outstanding antimicrobial activity against Pseudomonas putida bacteria.

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Section: Resultsmentioning

confidence: 92%

“…The primary fatty acids of palm oil are palmitic acid and oleic acid (Kamatou & Viljo, 2017). For coconut oil, saturated lauric acid is the fattiest reported (Jung et al, 2017). Triglycerides and fatty amides were characterized using FT-IR spectroscopy.…”

Section: Synthesis and Characterization Of Nonionic Surfactantsmentioning

confidence: 99%

Studies on the effect of long‐chain and head groups of nonionic surfactants synthesized from palm and coconut oil on the formation of silver nanoparticles

Vázquez‐Vélez¹,

Martı́nez²,

Kesarla³

et al. 2022

J Surfact & Detergents

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“…The content of fatty acids in the palm and coconut oil determined by GC is shown in Table 1. The major fatty acids contained in palm oil are palmitic acid (saturated) and oleic acid (unsaturated), whereas for the coconut oil, the saturated lauric acid is the most abundant, as reported in the literature [20,21]. The CG-M results, Table 1, present three compounds at a retention time of 20, 20.7 and 21.6 minutes.…”

Section: Inhibitor Characterizationmentioning

confidence: 61%

Use of fatty amide and anionic surfactant as corrosion inhibitors for carbon steel in different atmospheres

2019

Int. J. Corros. Scale Inhib.

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Sulfonated corrosion inhibitors have been used to protect materials in in-door or out-door storage temporarily. However, the use of environmentally friendly inhibitors becomes a necessity to reduce the environmental impact. In this work, fatty amides and anionic fatty surfactants were synthesized from inedible coconut and palm oil. These active compounds were formulated in natural wax and synthetic oil as vehicles of the anticorrosive formulation. The fatty amides were characterized by FTIR and NMR Spectroscopies. The corrosion behavior of carbon steel covered with these inhibitors was compared with the action of two marked products sulfonate base. Quantification of accelerated corrosion testing of preventive inhibitor coated evaluation was made by weight loss measurements after exposure in a fog chamber, simulating four types of atmospheres, namely marine, industrial-marine, rural and rural polluted. It was found fatty amide inhibitor from palm oil reduces corrosion rate efficiently for carbon steel protecting in rural environment 336 h with a 98.4% of efficiency and for a polluted rural environment 168 h (98.8%) in fog chamber. For Prohesion cyclic conditions, the temporary protective layer regularly used to protect until 244 h with 99.8% of efficiency. XRD patterns of rust samples revealed the presence of Fe 3 O 4 as the main phase in the film. The SEM micrographs showed that the fatty amide base coating presented an excellent efficiency in the four proposed atmospheres. Finally, this work is the first evaluation study of fatty amides in conditions of accelerated corrosion in the fog chamber.

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“…Alguns problemas relacionados à transesterificação catalítica, quando catalisada por base, há formação de sabões, a partir dos ácidos graxos livres, afetando diretamente o rendimento de biodiesel e dificulta a separação entre o biodiesel e a glicerina (CHEN et al, 2015). A transesterificação catalítica ácida é uma alternativa viável, no entanto, a reação é muito lenta (JUNG et al, 2017). A transesterificação não catalítica não apresenta esses problemas, porém requer um elevado custo com a aquisição reatores e na sua operação e um elevado consumo de metanol (ATABANI et al, 2012).…”

Section: Transesterificaçãounclassified

Produção de biodiesel, métodos, perspectivas para o Brasil – uma revisão

Castro¹,

Barañano²

2019

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A busca pela substituição dos combustíveis fósseis introduziu o biodiesel na matriz energética do Brasil em 2005. O biodiesel é um combustível derivado de biomassa que reduz a emissão de gases poluentes ao meio ambiente. A soja é a principal matériaprima para a produção desse combustível verde. O presente artigo consiste numa revisão de literatura, com a finalidade de abordar sobre as matérias-primas oleaginosas, os álcoois, a tecnologia e os desafios da produção do biodiesel no Brasil. Essa revisão foi baseada em periódicos, revistas, relatórios e sites. É percebido o quanto o uso do biodiesel como combustível é promissor.

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Biochar as porous media for thermally-induced non-catalytic transesterification to synthesize fatty acid ethyl esters from coconut oil

Cited by 22 publications

References 48 publications

Studies on the effect of long‐chain and head groups of nonionic surfactants synthesized from palm and coconut oil on the formation of silver nanoparticles

Studies on the effect of long‐chain and head groups of nonionic surfactants synthesized from palm and coconut oil on the formation of silver nanoparticles

Use of fatty amide and anionic surfactant as corrosion inhibitors for carbon steel in different atmospheres

Produção de biodiesel, métodos, perspectivas para o Brasil – uma revisão

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