Optimization of non-catalytic transesterification of microalgae oil to biodiesel under supercritical methanol condition

Srivastava, Garima; Paul, Atanu Kumar; Goud, Vaibhav V.

doi:10.1016/j.enconman.2017.10.093

Cited by 76 publications

(18 citation statements)

References 42 publications

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“…However, enzyme catalysed transesterification is also used, but having costly enzymes and a slow reaction rate are the two main hurdles that prevent this process from being commercialised [121]. In non-catalytic transesterification, supercritical methanol (SCM) provides higher biodiesel concentration yield in a short time duration [122][123][124].…”

Section: Biofuels and Energy Productionmentioning

confidence: 99%

Socio-Economic and Environmental Impacts of Biomass Valorisation: A Strategic Drive for Sustainable Bioeconomy

et al. 2021

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In the late twentieth century, the only cost-effective opportunity for waste removal cost at least several thousand dollars, but nowadays, a lot of improvement has occurred. The biomass and waste generation problems attracted concerned authorities to identify and provide environmentally friendly sustainable solutions that possess environmental and economic benefits. The present study emphasises the valorisation of biomass and waste produced by domestic and industrial sectors. Therefore, substantial research is ongoing to replace the traditional treatment methods that potentially acquire less detrimental effects. Synthetic biology can be a unique platform that invites all the relevant characters for designing and assembling an efficient program that could be useful to handle the increasing threat for human beings. In the future, these engineered methods will not only revolutionise our lives but practically lead us to get cheaper biofuels, producing bioenergy, pharmaceutics, and various biochemicals. The bioaugmentation approach concomitant with microbial fuel cells (MFC) is an example that is used to produce electricity from municipal waste, which is directly associated with the loading of waste. Beyond the traditional opportunities, herein, we have spotlighted the new advances in pertinent technology closely related to production and reduction approaches. Various integrated modern techniques and aspects related to the industrial sector are also discussed with suitable examples, including green energy and other industrially relevant products. However, many problems persist in present-day technology that requires essential efforts to handle thoroughly because significant valorisation of biomass and waste involves integrated methods for timely detection, classification, and separation. We reviewed and proposed the anticipated dispensation methods to overcome the growing stream of biomass and waste at a distinct and organisational scale.

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Section: Biofuels and Energy Productionmentioning

confidence: 99%

Socio-Economic and Environmental Impacts of Biomass Valorisation: A Strategic Drive for Sustainable Bioeconomy

et al. 2021

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“…SCF is conducive to the extraction of unsaturated fatty acids. The unsaturated fatty acids in SC-CO 2 extract are about 40%, while the traditional solvent extract is only 10-15% (Srivastava et al, 2018;de Melo et al, 2020). However, in the production of edible oil, economic and feasible strategies should be formulated according to the cost.…”

Section: Oil Extractionmentioning

confidence: 99%

Development Prospect and Preparation Technology of Edible Oil From Microalgae

Xue

et al. 2020

Front. Mar. Sci.

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Microalgae are a valuable and rich source of oil. By the means of using microalgae oil as raw materials or additives for edible oil will improve the nutritional and edible value of the latter. This paper compares the lipid content and fatty acid composition of microalgae and traditional oil crops, elaborates the lipid synthesis mechanism of microalgae cells and the strategies of promoting lipid accumulation both from environmental pressure and from molecular pressure, summarizes the methods of breaking microalgae cell walls and extracting oil, analyzes the nutritional value, toxicity, antioxidant, and economic feasibility issues to be considered in microalgae edible oil. It is hoped that this study could provide theoretical basis for the actual production of microalgae edible oil, and provide inspiration for the research on the synthesis, accumulation, extraction and preparation of microalgae oils.

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“…In a recent review on the production of biodiesel in continuous mode, the researchers showed the advantages and disadvantages of the different types of continuous flow processes [18]. Statistical experimental design of response surface methodologies has been used in the optimization of the process parameters for biodiesel production in batch and continuous processes [19][20][21][22][23][24][25]. The parameters (methanol/oil ratio, residence time, and temperature) that affect the biodiesel yield were optimized in a tubular packed reactor using response surface methodology in [26].…”

Section: Introductionmentioning

confidence: 99%

DBSA-Catalyzed Sewage Sludge Conversion into Biodiesel in a CSTR: RSM Optimization and RTD Study

Jazie

2019

J. Eng. Technol. Sci.

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Sewage sludge from the primary stage of a wastewater treatment plant (WWTP) in Al-Diwaniyah City was direct-transesterified to biodiesel using dodecylbenzenesulfonic acid catalyst in a system with two continuously stirred tank reactors. The response surface and the central cube design methodologies were used to optimize the parameters affecting the biodiesel yield. The optimum conditions for the process in this study were found to be (residence time: 90 min; catalyst loading 8 wt%; methanol/oil ratio: 18; reaction temperature: 368.15 K). Under the optimum process conditions a biodiesel yield of 96.51% was obtained. The experimental residence time distribution (RTD) was calculated and compartment models were applied for the two-tank reactor system. In the CSTR, a dead zone of (10 liter) was estimated. The independent analysis of fatty acids in the sewage showed that the lipids consisted primarily of palmitic acid (C16:0 = 37.86), oleic acid (C18:1 cis-9 = 19.72) and stearic acid (C18:0 = 17.32), and the acid value was (2.44 mg KOH/g). The properties of the biodiesel produced were comparable with the ASTM D-6751-2 standard and the properties of mineral diesel.

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Optimization of non-catalytic transesterification of microalgae oil to biodiesel under supercritical methanol condition

Cited by 76 publications

References 42 publications

Socio-Economic and Environmental Impacts of Biomass Valorisation: A Strategic Drive for Sustainable Bioeconomy

Socio-Economic and Environmental Impacts of Biomass Valorisation: A Strategic Drive for Sustainable Bioeconomy

Development Prospect and Preparation Technology of Edible Oil From Microalgae

DBSA-Catalyzed Sewage Sludge Conversion into Biodiesel in a CSTR: RSM Optimization and RTD Study

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