Biodiesel production from lipids of municipal sewage sludge by direct methanol transesterification

Demırbas, Ayhan; Bamufleh, Hisham S.; Edris, Gaber; Al-Sasi, Basil Omar

doi:10.1080/15567036.2016.1263259

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…Table 1 presents the average percentages of saturated and unsaturated fatty acids in the activated sludge oil from the Fovissste plant. The percentages of myristic, palmitic, stearic and linoleic acids are within the range of percentages reported by Demirbas et al, (2017) with the exception of lauric, palmitoleic, oleic and linoleic fatty acids (18:3). The percentages of free fatty acids quantified for the oil samples from the three plants were between 0.38 and 6.64% with an average value of 4.45%.…”

Section: Resultssupporting

confidence: 83%

Characterization of Oil Extracted From Activated Sludge of Wastewater Treatment Plants in Chetumal, Quintana Roo

Jiménez¹,

Bucio²,

Blas³

et al. 2023

JBNS

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Oil was extracted from samples of activated sludge from the activated sludge reactors of the Fovissste V Etapa, Xul-Ha and Centenario wastewater treatment plants. Oil content, fatty acid composition and free fatty acid percentage were analyzed for these samples. The Gravimetric Oil Yields of the samples from the three plants had a significant variation with an interval of 3.12 to 11.09 %. Palmitic, stearic and oleic acids predominated in all the samples analyzed. Additionally, the oil had a composition of around 60% saturated fatty acids, 40% unsaturated fatty acids and an average content of 4.45% free fatty acids. The oil content of the activated sludge from these plants can be transesterified for biodiesel production.

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Section: Resultssupporting

confidence: 83%

Characterization of Oil Extracted From Activated Sludge of Wastewater Treatment Plants in Chetumal, Quintana Roo

Jiménez¹,

Bucio²,

Blas³

et al. 2023

JBNS

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“…The comparative analysis of the compositional profiles between the examined grass samples and other waste materials, such as municipal sewage sludge [80], revealed analogous distributions of FAMEs. Palmitic acid (C16:0) emerged as the predominant saturated fatty acid, constituting 37.5%, followed by stearic acid (C18:0) at 12.0%.…”

Section: Discussionmentioning

confidence: 89%

Possibilities of Utilising Biomass Collected from Road Verges to Produce Biogas and Biodiesel

Czubaszek,

Wysocka-Czubaszek,

Sienkiewicz

et al. 2024

Energies

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Grass collected as part of roadside maintenance is conventionally subjected to composting, which has the disadvantage of generating significant CO2 emissions. Thus, it is crucial to find an alternative method for the utilisation of grass waste. The aim of this study was to determine the specific biogas yield (SBY) from the anaerobic mono-digestion of grass from road verges and to assess the content of Fatty Acid Methyl Esters (FAMEs) in grass in relation to the time of cutting and the preservation method of the studied material. The biochemical biogas potential (BBP) test and the FAMEs content were performed on fresh and ensiled grass collected in spring, summer, and autumn. The highest biogas production was obtained from fresh grass cut in spring (715.05 ± 26.43 NL kgVS−1), while the minimum SBY was observed for fresh grass cut in summer (540.19 ± 24.32 NL kgVS−1). The methane (CH4) content in the biogas ranged between 55.0 ± 2.0% and 60.0 ± 1.0%. The contents of ammonia (NH3) and hydrogen sulphide (H2S) in biogas remained below the threshold values for these inhibitors. The highest level of total FAMEs was determined in fresh grass cut in autumn (98.08 ± 19.25 mg gDM−1), while the lowest level was detected in fresh grass cut in spring (56.37 ± 7.03 mg gDM−1). C16:0 and C18:0, which are ideal for biofuel production, were present in the largest amount (66.87 ± 15.56 mg gDM−1) in fresh grass cut in autumn. The ensiling process significantly impacted the content of total FAMEs in spring grass, leading to a reduction in total saturated fatty acids (SFAs) and an increase in total unsaturated fatty acids (USFAs). We conclude that grass biomass collected during the maintenance of road verges is a valuable feedstock for the production of both liquid and gaseous biofuels; however, generating energy from biogas appears to be more efficient than producing biodiesel.

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“…The amount of base catalyst required is dependent on the glyceride levels, reaction temperature, and reaction time. Varying the amount of catalyst from 1% to 9% resulted in the yield of the product being as high as 96.7%. ,,,,, Karnasuta et al studied the production of biodiesel from trap grease collected from cafeterias and restaurants in Bangkok, Thailand via the two-stage esterification–transesterification processes. They utilized homogeneous catalysts including sulfuric acid and potassium hydroxide for the esterification and transesterification reactions, respectively.…”

Section: Biodiesel Production Techniquesmentioning

confidence: 99%

“…Recently, significant effort has been put into optimizing the operating parameters for the extraction of FOG, the esterification reaction to reduce FFA, and the transesterification process. Results show that GTW-derived biodiesel has great potential to substitute for fossil fuels, in terms of both its environmental benefits and economic feasibility. ,− ,− However, as shown in Figure , the low quality of GTW-derived biodiesel, i.e., high level of sulfur and heavy metals, is currently the main obstacle for its marketability, since, in the majority of cases, GTW-derived biodiesel cannot satisfy the ASTM D6751 or EN 14214 standards. , Further investigation must be undertaken to overcome these problems and clarify the effect of process scaleup on the quality and quantity of GTW-derived biodiesel. Therefore, the main objective of this Review is to summarize studies that focus on the following topics in order to give, for the first time, a holistic view of the process feasibility and techno-economic viability concerning GTW as a biofuel option: Lipid extraction processes Biodiesel production techniques Fuel properties of GTW-derived biodiesel Economic feasibility of GTW-derived biodiesel From this state-of-the-art analysis, future implications of biodiesel production from GTW are addressed.…”

Section: Introductionmentioning

confidence: 99%

Production of Biodiesel from Recycled Grease Trap Waste: A Review

Tran

Tišma

Budžaki

et al. 2021

Ind. Eng. Chem. Res.

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In recent years, climate changes occurring worldwide have encouraged research into the development of eco-friendly, lowerenvironmental-impact, and more-sustainable energy sources. This may also be a solution to deal with the rapid decrease in, and depletion of, fossil resources. Biodiesel has been considered as a key attribute for effective climate change responses and a potential candidate to substitute for mineral diesel. Even so, the marketability of biodiesel is still very limited, because of the lower price of fossil diesel, as well as the expensive cost of present biodiesel feedstocks. In this regard, the use of wastewater residuals such as scum sludge and grease trap waste (GTW) as a cost-effective feedstock appears to be attractive. Many studies have been conducted to investigate the characteristics of GTW in order to develop an appropriate technique for biodiesel production from this low-quality and low-cost resource. However, most of these studies have only focused on a partial process, including the pretreatment of feedstock, the esterification, and the transesterification processes, without reporting a fully integrated process for biodiesel production from recycled trap grease. Therefore, this study aims to highlight recent achievements in the production of biodiesel from GTW and to consider the potential marketability of this fuel.

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Biodiesel production from lipids of municipal sewage sludge by direct methanol transesterification

Cited by 11 publications

References 30 publications

Characterization of Oil Extracted From Activated Sludge of Wastewater Treatment Plants in Chetumal, Quintana Roo

Characterization of Oil Extracted From Activated Sludge of Wastewater Treatment Plants in Chetumal, Quintana Roo

Possibilities of Utilising Biomass Collected from Road Verges to Produce Biogas and Biodiesel

Production of Biodiesel from Recycled Grease Trap Waste: A Review

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