Production of biodiesel from waste cooking oil using a homogeneous catalyst: Study of semi-industrial pilot of microreactor

Mohadesi, Majid; Aghel, Babak; Maleki, Mahmoud; Ansari, Ahmadreza

doi:10.1016/j.renene.2019.01.039

Cited by 122 publications

(34 citation statements)

References 41 publications

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“…Nevertheless, homogeneous acid catalysis did not develop industrially as it requires high reaction temperatures (usually 50-150 • C [56]), equipment made of materials that support inevitable problems with corrosion, as well as reactors with high volumes once the reaction rates of this route are low [17]. Mohadesi et al [57] investigated the transesterification of waste cooking oil in the presence of potassium hydroxide in a pilot microreactor to produce 5 L • H −1 of biodiesel. First, the acidity of the raw material had to be reduced to less than 1 mg KOH • g −1 of oil employing an acid esterification in the presence of sulfuric acid (1 wt%).…”

Section: Figmentioning

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: Figmentioning

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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“…Como sugestão para estudos futuros, cita-se a utilização de modelos de simulação para verificar o impacto gerado com a aplicação da alternativa priorizada e ainda um estudo que verse a respeito da destinação dos resíduos gerados pela organização. Pois estudos recentes têm demonstrado que muitos resíduos advindos até mesmo de restaurantes podem ser potenciais alternativas, como no caso do óleo de cozinha usado, que pode ser matéria prima para fabricação de biodiesel (Bechet et al, 2010;Demirbas, 2009;Zhang & Kong, 2010;Mendes, 2015;Aboelazayem, Gadalla & Saha, 2019;Aghel et al, 2019;Ahmad et al, 2019;Nabi et al, 2019;Velmurugan et al, 2019;Tan et al, 2019;Mohadesi et al, 2019;Dimitriou, Tsujimura & Suzuki, 2019).…”

Section: Considerações Finaisunclassified

Alternativas De Melhoria Da Qualidade Nos Processos De Um Restaurante Sob a Ótica Das Práticas Sustentáveis

Silva

Johann

Nunes

et al. 2021

Exacta

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Diante aos aspectos inerentes que permeiam a temática da sustentabilidade, bem como a importância desta na sociedade, torna-se relevante que estudos sejam realizados com a finalidade de auxiliar as organizações a estarem alinhadas a esse viés. Dessa forma objetivo do presente estudo é avaliar as alternativas de melhoria na qualidade no processo com ênfase nas práticas sustentáveis em um restaurante situado na região noroeste do Rio Grande do Sul. Através de uma pesquisa exploratória, descritiva, de abordagem qualitativa e quantitativa, este estudo de caso avaliou um restaurante, elencando alternativas de melhoria da qualidade, alinhadas a práticas sustentáveis, priorizando através do método de Análise hierárquica de processos (AHP) aquela que na visão do gestor é mais relevante. Dessa forma, os resultados demonstraram que alternativa voltada a treinamento do pessoal é a mais priorizada, visto sua influência direta nos processos, o que pode auxiliar na redução dos desperdícios no restaurante.

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“…Nature of the resource calls upon an inter-disciplinary pool of scientists to carry out the process optimization therefore some very comprehensive approaches and studies to optimize biodiesel production have recently been carried out [36,37]. Use of different catalysts has been studied to improve the process to an extent that the FAME yields of over 90% have also been reported using different catalysts and conditions [38][39][40] The use of homogenous, heterogeneous, nanocatalysts has been studied but overall the performance of the process when catalyzed by alkali, alkoxides, hydroxides and alkaline metal oxides has been reported to be the most effective and if we compare the acid-base catalysts, the acid based catalysts have been found to be performing better under the higher alcohol to oil molar ratio exposure at moderate pressure and temperature [41,42]. Various studies have also been performed analyzing the properties of the produced biodiesel as a fuel in conventional internal combustion engines and the fuel has been reported to be very competitive in the fossil fuel dominated liquid fuel arena, used both in the form of blends and independently [43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Techno-spatial assessment of waste cooking oil for biodiesel production in Pakistan

et al. 2020

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This study presents a take on employing the principles of waste valorization to solve the long-standing problem of finding sustainable resources for biodiesel production. The biodiesel production has always met with a competition with food security and land use. This has limited the scope of the technology to laboratory experiments only. This study aims to assess the geospatial availability of waste cooking oil in Pakistan to map its biodiesel production potential. Owing to the resource posing no land use or food security challenges, a resource assessment using geographical information systems was carried out. The waste cooking oil availability was estimated using the statistics on per capita edible oil consumption with a realistic consumption and collection factor applied to it. The available residual cooking oil was subjected to the transesterification with a rather conservative conversion to the biodiesel at 66.25% to keep the estimates realistic. The study results in heat maps of all the different regions and provinces of the country. The findings suggest that Punjab province is the highest potential province with 249,260 tonnes of biodiesel production annually. Karachi district is the highest potential district with a potential of 36,156 tonnes of biodiesel production in a year. The study paves ways for investment sector in the study area to identify highest potential regions to invest in. It also motivates the scientific community to step outside of experimental research on waste cooking oil's biodiesel production potential and perform resource assessments and techno-economic analyses on the technology for its widespread adoption.Graphic abstract PS-The callouts do not represent any geographical locations instead they represent the shade of the gradient they correspond to in terms of red being the gradient shade for the problems and the green being the gradient shade for the remedial contributions made by the study. The use of the map of the study area is because of the contextual important of the map in a resource and potential assessment that is geospatial in nature.

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Production of biodiesel from waste cooking oil using a homogeneous catalyst: Study of semi-industrial pilot of microreactor

Cited by 122 publications

References 41 publications

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

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

Alternativas De Melhoria Da Qualidade Nos Processos De Um Restaurante Sob a Ótica Das Práticas Sustentáveis

Techno-spatial assessment of waste cooking oil for biodiesel production in Pakistan

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