A critical review of recent advancements in continuous flow reactors and prominent integrated microreactors for biodiesel production

Gopi, Raman Jeya; Thangarasu, Vinoth; M, Angkayarkan Vinayakaselvi; Ramanathan, Anand

doi:10.1016/j.rser.2021.111869

Cited by 34 publications

(3 citation statements)

References 191 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, it has been shown that the liquid phases can be promptly separated at the end of the small channels by exploiting their different wettabilities with the channel walls or membranes (Tsaoulidis et al, 2013). Most of the works on biodiesel production in small channels are summarized in six recent reviews (Franjo et al, 2018;Madhawan et al, 2018;Tiwari et al, 2018;Banerjee et al, 2019;Natarajan et al, 2019;Thangarasu et al, 2022), and focus mainly on either first (edible oil-crops) or second (non-edible crops) generation feedstocks as shown in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Intensified biodiesel production from waste cooking oil and flow pattern evolution in small-scale reactors

2023

View full text Add to dashboard Cite

In this paper, the transesterification reaction of waste cooking oil (WCO) with methanol using KOH as catalyst to produce biodiesel was performed in a micro-reactor (1 mm ID) using a cross-flow inlet configuration. The effects of different variables such as, methanol-to-oil molar ratio, temperature, catalyst concentration, and residence time on biodiesel yield, as well as the associated flow patterns during the transesterification reaction were investigated and the relationship between flow characteristics and mass transfer performance of the system was examined. The work reveals important aspects and the links between the hydrodynamic behaviour and the mass transfer performance of the intensified reactors. It was found that high yield (>90%) of biodiesel can be achieved in one-stage reaction using cross-flow micro-reactors for a wide range of conditions, i.e., methanol-to-oil molar ratio: 8–14, catalyst concentration: 1.4%–1.8% w/w, temperature: 55°C–60°C, and residence times: 55–75 s.

show abstract

Section: Introductionmentioning

confidence: 99%

Intensified biodiesel production from waste cooking oil and flow pattern evolution in small-scale reactors

2023

View full text Add to dashboard Cite

show abstract

“…Tese issues can complicate the commercialization of biodiesel on an industrial scale [34,35]. However, modifying the reactor design to intensify the process can alleviate the drawbacks associated with conventional batch-type biodiesel production [36,37].…”

Section: Introductionmentioning

confidence: 99%

Esterification of Oleic Acid for Biodiesel Production Using a Semibatch Atomization Apparatus

Deus,

Lira

et al. 2023

International Journal of Chemical Engineering

View full text Add to dashboard Cite

Although biodiesel production is undoubtedly a mature technology, there are still ways to improve it, especially through process intensification. The present study investigated the esterification of oleic acid with ethanol for biodiesel production in a nonconventional atomization reactor. The effects of the oleic acid flow rate (1.3, 2.6, and 3.9 g/min), atomization pressure (50, 100, and 150 kPa), and temperature (323, 333, and 343 K) were evaluated by a complete factorial experimental design. The size of droplets was determined by computational image processing. A mathematical model was also developed to describe the conversion of oleic acid to ethyl ester as a function of molar concentration of components and operating conditions of the reactor. A hybrid estimation of parameters (pre-exponential factor, activation energy, and equilibrium and solubility constants) was performed using particle swarm optimization followed by the Broyden–Fletcher–Goldfarb–Shanno method. The Pareto analysis has shown that the increase in temperature in the reactor and the increase in atomization pressure have improved the conversion of oleic acid. Higher pressure values in the atomization nozzle led to the generation of small oleic acid droplets, which accelerated reagent consumption during the reaction. On the other hand, conversion values were reduced by increasing the oleic acid flow rate. The highest conversion of oleic acid (86.7%) was obtained under the following reaction conditions: temperature of 343 K, atomization pressure of 150 kPa, oleic acid flow rate equal to 1.3 g/min using 0.7% sulfuric acid (mol of sulfuric acid/mol of oleic acid), and 2 h of reaction time. The simulations showed that esterification is governed by temperature, but it is possible to observe that the atomization pressure affects more conversion of oleic acid under a low temperature (<323 K).

show abstract

“…The microfluidic layer is typically very thin (10–100 μm), saving time for the substrate to diffuse to the reaction surface. 37–39 (3) Low energy consumption and high reaction efficiency. Due to the small size of the microfluidic reactor, the diffusion time is greatly reduced, which increases the reaction rates and reduces the consumption of expensive photocatalysts and enzymes.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic artificial photosynthetic system for continuous NADH regeneration and l-glutamate synthesis

Lin

Liu

Yang

et al. 2022

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

A critical review of recent advancements in continuous flow reactors and prominent integrated microreactors for biodiesel production

Cited by 34 publications

References 191 publications

Intensified biodiesel production from waste cooking oil and flow pattern evolution in small-scale reactors

Intensified biodiesel production from waste cooking oil and flow pattern evolution in small-scale reactors

Esterification of Oleic Acid for Biodiesel Production Using a Semibatch Atomization Apparatus

Microfluidic artificial photosynthetic system for continuous NADH regeneration and l-glutamate synthesis

Contact Info

Product

Resources

About