Lipase supported on granular activated carbon and activated carbon cloth as a catalyst in the synthesis of biodiesel fuel

Naranjo, Juan Camilo; Córdoba, Andrés; Giraldo, Liliana; García, Vanessa S.; Moreno–Piraján, Juan Carlos

doi:10.1016/j.molcatb.2010.05.002

Cited by 59 publications

(23 citation statements)

References 24 publications

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“…Beyond the stoichiometric (AlcoR 1:3) amount, this effect appeared to be more pronounced (Figs. 4, 5, 6, and 7 and Tables 2, 3, 4, and 5) and consistent with previous reports [30,32,34]. In the presence of polar alcohols, the oil exists in a two-phase system with very minimal dispersion [34][35][36] creating diffusion limitations and a low concentration of oil in the alcohol phase.…”

Section: Discussionsupporting

confidence: 88%

“…The initial low conversion of the TAG and relative high amount of unreacted TAG quantified in the transesterified oils during the initial segment of the reaction may be due to a myriad of factors, such as initial delay in the transesterification reaction and may be due to minimal mixing and dispersion of the alcohol with oil, poor solvation, or low miscibility of TAG in the alcohol creating a two-phase/heterogeneous system, the deactivation effect of the polar ethanol on the enzyme, interfacial action of lipase, and the nature of lipase catalysis in non-aqueous media [27][28][29][30][31][32].…”

Section: Discussionmentioning

confidence: 99%

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Identification and Quantitation of Reaction Intermediates and Residuals in Lipase-Catalyzed Transesterified Oils by HPLC

Aryee

Phillip

Cue

et al. 2011

Appl Biochem Biotechnol

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A high-performance liquid chromatography (HPLC) unit equipped with size exclusion column and a refractive index detector was used for simultaneous monitoring, identification, and quantitation of the reaction components from lipase-catalyzed transesterification of three oils. The procedure simultaneously separated and detected the unreacted triacylglycerols (TAG), diacyl-, and monoacyl-glycerol (DAG and MAG) co-products, residual alcohol as well as free fatty acid (FFA) based on retention times. The chromatograms showed well separated and resolved peaks. The elution of the components from the transesterification reaction in increasing order was: TAG < DAG < FFA < MAG. Generally, higher alcohol ratios decreased the conversion of TAG in all the oils studied with between 14% and 94% of TAG remaining at all the treatment combinations. Higher amount of salmon skin oil (SSO) TAG was generally converted to DAG than Rothsay composite (RC) and olive oil (OO) TAG. Relatively higher amount of OO DAG was converted to MAG than SSO and RC with only 5-14% DAG remaining in OO. RC and OO generally accumulated less MAG, and this was reflected as lower MAG levels in RC (<6%) and OO (<14%) compared with SSO (<27%). For the various treatment combinations and the three oils used in this study, the least amount of FFA was recorded in transesterified OO with a maximum of approximately 4%. This HPLC method can be used as a simple and fast technique to analyze the reaction components and products of transesterification reactions without the need for additional derivatization steps.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Identification and Quantitation of Reaction Intermediates and Residuals in Lipase-Catalyzed Transesterified Oils by HPLC

Aryee

Phillip

Cue

et al. 2011

Appl Biochem Biotechnol

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“…The naturally occurring materials used as carriers for lipase immobilization include: activated carbon (MorenoParajàn & Giraldo, 2011;Naranjo et al, 2010) and carbon cloth (Naranjo et al, 2010), celite (Ji et al, 2010;Shah & Gupta, 2007); hydrotalcite (Yagiz et al, 2007;Zeng et al, 2009), zeolites (Yagiz et al, 2007), etc. The role of the nature of the support surface on the loading and the activity, as well as on the operational stability of the immobilized enzyme has been investigated in details.…”

Section: Lipases Immobilization By Adsorptionmentioning

confidence: 99%

The Immobilized Lipases in Biodiesel Production

Stoytcheva¹,

Montero²,

Toscano³

et al. 2011

Biodiesel - Feedstocks and Processing Technologies

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“…A growing numbers of studies for potential novel applications have been investigated in the last years 2 ISRN Chemical Engineering [32], involving commercial samples in most cases. Either untreated or modified ACCs have been explored as catalyst or catalyst/biocatalyst support in several processes [33][34][35][36][37][38][39][40][41][42][43][44], as electrode materials [21,22,[45][46][47][48][49][50][51][52][53][54][55][56], and as potential substrate for nanotube growth [57]. They have also been examined intensively for abatement of gaseous and liquid pollutants [19,20,28,[58][59][60][61][62][63][64][65], as well as for separation and purification of biomolecules [66].…”

Section: Introductionmentioning

confidence: 99%

Development and Environmental Applications of Activated Carbon Cloths

Cukierman

2013

ISRN Chemical Engineering

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Activated carbon cloths have received growing attention because they offer comparative advantages over the traditional powdered or granular forms of this well-known adsorbent, providing further potential uses for technological innovations in several fields. The present article provides an overview of research studies and advances concerned with the development of activated carbon cloths and their use as adsorbent in environmental applications, mostly reported in the last years. The influence of some fabrics and textile wastes used as precursors, and of main activation process variables on the development and physicochemical, mechanical and/or electrical properties of the resulting activated carbon cloths are first reviewed. Then, investigations dealing with the removal of water and air pollutants by adsorption onto activated carbon cloths, including advances toward optimizing their regeneration after organic vapors saturation, are presented.

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Lipase supported on granular activated carbon and activated carbon cloth as a catalyst in the synthesis of biodiesel fuel

Cited by 59 publications

References 24 publications

Identification and Quantitation of Reaction Intermediates and Residuals in Lipase-Catalyzed Transesterified Oils by HPLC

Identification and Quantitation of Reaction Intermediates and Residuals in Lipase-Catalyzed Transesterified Oils by HPLC

The Immobilized Lipases in Biodiesel Production

Development and Environmental Applications of Activated Carbon Cloths

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