Cost analysis of enzymatic biodiesel production in small-scaled packed-bed reactors

Budžaki, Sandra; Miljić, Goran; Sundaram, Smitha; Tišma, Marina; Hessel, Volker

doi:10.1016/j.apenergy.2017.11.026

Cited by 65 publications

(28 citation statements)

References 48 publications

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“…Although many papers about enzymatic biodiesel still focus on the use of lipases immobilized, it is perceptible that the cost of this biocatalyst per mass of biodiesel produced is so elevated that it hinders a possibility of production scaleup [55,77,152]. Budžaki et al [153] published recently an extensive economic analysis composed of several scenarios for an enzymatic biodiesel production in a small-scaled packed-bed reactors, where the utilization of the lipase from T. lanuginosus immobilized on a polymeric support for production of 10,000 ton of biodiesel in a period of one year was considered. In the best scenario obtained in this research, 32 reactors in parallel would have to be used to achieve the desired annual production, in addition to the reutilization of the immobilized enzymes for 50 days to obtain the lowest cost of biodiesel production, which is very difficult considering the inhibitory caused by methanol on lipase activity.…”

Section: Current Status Of the Biodiesel Catalyzed By Soluble Lipasesmentioning

confidence: 99%

Lipases in liquid formulation for biodiesel production: Current status and challenges

Wancura

Tres

Jahn

et al. 2019

Biotech and App Biochem

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Enzymatic synthesis of biodiesel showed advantageous characteristics in relation to other technologies once it works under bland conditions, no generation of wastewater, no occurrence of saponifications reactions and production of a biodiesel with high quality. Although many researches still apply immobilized lipases, the high costs associated with this biocatalyst hamper the economic viability of the process. Lipases in free/soluble/liquid formulation employed to biodiesel production via hydroesterification reaction have attracted interest from researchers because they are more cost effective than the immobilized form, making the enzymatic route more competitive. In addition, soluble lipases present higher reaction rates, reducing the time required to obtain a satisfactory biodiesel yield. Despite the fact that already exist industrial plants producing biodiesel with the assistance of lipases in liquid formulation, results of researches show that the process still needs to overcome some drawbacks. This paper is a comprehensive and critical discussion on the publications where soluble lipases were applied on biodiesel synthesis, as well as the challenges that the technology faces and its current status in pilot and industrial applications.

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Section: Current Status Of the Biodiesel Catalyzed By Soluble Lipasesmentioning

confidence: 99%

Lipases in liquid formulation for biodiesel production: Current status and challenges

Wancura

Tres

Jahn

et al. 2019

Biotech and App Biochem

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“…The unit costs of catalysts and solvents, including methanol and KOH, were calculated based on the actual purchase price. Therefore, it should be noted that the material cost estimated in this study was higher than the industrial production cost, where the material cost can be lowered by large purchase volume [12,33,34].…”

Section: Energy Consumption and Input Cost For Transesterificationmentioning

confidence: 78%

Characteristics of direct transesterification using ultrasound on oil extracted from spent coffee grounds

Kim

Woo

Kim

2019

Environmental Engineering Research

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Spent coffee grounds (SCG), the residue after brewing coffee beverage, is a promising biodiesel feedstock due to its high oil contents (15‒20%). However, SCG should be pretreated to reduce the high free fatty acid content, which hampers transesterification reaction. To overcome this, we explored a direct transesterification reaction of SCG using ultrasound irradiation and identified the optimal sonication parameters. A high fatty acid methyl ester (FAME) content, up to 97.2%, could be achieved with ultrasound amplitude of 99.2 <i>μ</i>m, irradiation time of 10 min, and methanol to oil ratio of 7:1 in the presence of potassium hydroxide concentration of 1.25 wt.%. In addition, we demonstrated that ultrasound irradiation is an efficient method to produce biodiesel from untreated SCG in a short time with less energy than the conventional mechanical stirring method. The physical and chemical properties of the SCG biodiesel met the requirements for an alternative fuel to the current commercial biodiesel.

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“…SwCNT COOH -GDE-L-AK SwCNT NH2 -GDE-L-AK As demonstrated recently by Hessel [45], a major cost for the scaled-up production of biodiesel in a continuous flow reactor is related to the enzyme costs influenced by the support material itself. However, when the immobilization yield and the biocatalyst stability are high, the enzymatic process is in general economically viable, sustainable and environmentally friendly, as compared with the chemical classic routes.…”

Section: Conversion (%)mentioning

confidence: 94%

Efficient Biodiesel Production Catalyzed by Nanobioconjugate of Lipase from Pseudomonas fluorescens

et al. 2020

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The Amano lipase from Pseudomonas fluorescens (L-AK) was covalently immobilized on various carbon nanomaterials (functionalized single-walled carbon nanotubes and graphene oxide) and tested for biodiesel production. Using the most active lipase preparation (covalently immobilized L-AK on SwCNTNH2 derivatized with glycerol diglycidyl ether) under optimal conditions, quasi-complete conversion (>99%) of sunflower oil was obtained after only 4 h reaction time. Moreover, the biocatalyst maintained more than 99% of its initial activity in the batch system after multiple recycling experiments.

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Cost analysis of enzymatic biodiesel production in small-scaled packed-bed reactors

Cited by 65 publications

References 48 publications

Lipases in liquid formulation for biodiesel production: Current status and challenges

Lipases in liquid formulation for biodiesel production: Current status and challenges

Characteristics of direct transesterification using ultrasound on oil extracted from spent coffee grounds

Efficient Biodiesel Production Catalyzed by Nanobioconjugate of Lipase from Pseudomonas fluorescens

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