Chemical and physical analysis of the liquid fractions from soursop seed cake obtained using slow pyrolysis conditions

Schroeder, Priscila; Nascimento, Beatriz Pereira do; Romeiro, Gilberto A.; Figueiredo, Monique Kort-Kamp; Veloso, Márcia Cristina da Cunha

doi:10.1016/j.jaap.2017.02.010

Cited by 32 publications

(14 citation statements)

References 22 publications

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“…The presence of nitrogen would indicate the existence of protein in the seeds . The crude protein content could be estimated from the nitrogen composition (N × 6.25) . From calculation, ultrasonic esterified Jatropha seeds were found to have higher crude protein content than raw Jatropha seeds, which were 48.18% and 26.75%, respectively.…”

Section: Resultssupporting

confidence: 66%

“…51 The crude protein content could be estimated from the nitrogen composition (N × 6.25). 52 From calculation, ultrasonic esterified Jatropha seeds were found to have higher crude protein content than raw Jatropha seeds, which were 48.18% and 26.75%, respectively. This difference could indicate that ultrasonic esterification did not significantly remove those nutrients that provide important nitrogen source during the bioethanol fermentation process.…”

Section: Elemental Analysismentioning

confidence: 99%

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Process intensification of biodiesel synthesis via ultrasound‐assisted in situ esterification of Jatropha oil seeds

Tan

Ong

Lim

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Non‐edible oil such as Jatropha oil has high free fatty acids (FFAs) content. Therefore, acid esterification is a suitable route to reduce its FFA content to an acceptable limit (2 FFA%) before being subjected to further transesterification. In the present study, Jatropha seeds were utilized as the feedstock directly instead of Jatropha oil during ultrasound‐assisted in situ esterification. The objective of this work is to evaluate the feasibility of in situ esterification of Jatropha oil seeds using sulphuric acid (H2SO4) as catalyst with the aid of ultrasound. RESULTS The reaction parameters (particle size, n‐hexane to methanol volume ratio, H2SO4 amount, reaction time and ultrasonic amplitude) were optimized and evaluated in term of extraction and esterification efficiencies as well as fatty acid methyl ester (FAME) yield. The highest extraction efficiency of 83.96%, esterification efficiency of 71.10% and FAME yield of 38.58% were achieved at particle size of 1–2 mm, n‐hexane to methanol volume ratio of 3:1, 5 vol% of H2SO4 and ultrasonic amplitude of 60% with reaction time of 150 min. CONCLUSION Synthesis of biodiesel via ultrasound‐assisted in situ esterification of Jatropha oil seeds was successful with considerable yield, which could provide improvement in terms of process intensification and more value added by‐products. © 2018 Society of Chemical Industry

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Section: Resultssupporting

confidence: 66%

Section: Elemental Analysismentioning

confidence: 99%

Process intensification of biodiesel synthesis via ultrasound‐assisted in situ esterification of Jatropha oil seeds

Tan

Ong

Lim

et al. 2018

J of Chemical Tech & Biotech

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“…In recent years, the use of plant seed obtained from fruit production industry for biodiesel production has attracted much attention due to its low cost and availability [25,26]. In the state of Bahia (Brazil), approximately 20 thousand tons of soursop fruit are produced annually, thus producing about 1.7 thousand tons of soursop seed each year [37]. Since soursop is an economically important crop worldwide [37,41], the global food production from soursop fruit can cause a problematic surplus of this seed.…”

Section: The Feasibility Of Soursop Seed Oil As Biodiesel Feedstockmentioning

confidence: 99%

“…In the state of Bahia (Brazil), approximately 20 thousand tons of soursop fruit are produced annually, thus producing about 1.7 thousand tons of soursop seed each year [37]. Since soursop is an economically important crop worldwide [37,41], the global food production from soursop fruit can cause a problematic surplus of this seed. To add value to the soursop seeds, the effective method of recycling these seeds is being investigated.…”

Section: The Feasibility Of Soursop Seed Oil As Biodiesel Feedstockmentioning

confidence: 99%

Biodiesel Production from a Novel Nonedible Feedstock, Soursop (Annona muricata L.) Seed Oil

Nguyen

Pham

et al. 2018

Energies

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This study investigated the optimal reaction conditions for biodiesel production from soursop (Annona muricata) seeds. A high oil yield of 29.6% (w/w) could be obtained from soursop seeds. Oil extracted from soursop seeds was then converted into biodiesel through two-step transesterification process. A highest biodiesel yield of 97.02% was achieved under optimal acid-catalyzed esterification conditions (temperature: 65 °C, 1% H2SO4, reaction time: 90 min, and a methanol:oil molar ratio: 10:1) and optimal alkali-catalyzed transesterification conditions (temperature: 65 °C, reaction time: 30 min, 0.6% NaOH, and a methanol:oil molar ratio: 8:1). The properties of soursop biodiesel were determined and most were found to meet the European standard EN 14214 and American Society for Testing and Materials standard D6751. This study suggests that soursop seed oil is a promising biodiesel feedstock and that soursop biodiesel is a viable alternative to petrodiesel.

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“…This process leads to the production of a volatile fraction consisting of bio-gases, a condensable liquid fraction (bio-oils) and a carbon rich solid residue (bio-char). Pyrolysis is seen as a highly versatile process in which it is possible to optimize a variety of experimental variables, such as the final pyrolysis temperature, heating rate, annealing time, etc., depending on whether the desired aim is to maximize the bio-char that can be used as fuel and as a potential precursor for activated carbons [12], [13], or the bio-oils and bio-gases for multiple applications [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis technologies for pomegranate (Punica granatum L.) peel wastes. Prospects in the bioenergy sector

et al. 2019

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An unpublished low-cost industrial biomass waste, pomegranate peel, as alternative and sustainable fuel source was studied. A horizontal tubular furnace of original design for conventional and flash pyrolysis was carried out. The bio-char yields from both processes were similar, but the bio-oil and bio-gas yields were higher in flash pyrolysis, depending on the temperature. The bio-char obtained show that it could be used as a fuel (higher heating values ≥ 28.0MJ/kg) and as a potential precursor of activated carbon. It was also found that the lower temperature of the flash pyrolysis was, the greater the bio-oil yield (~53%) and that the higher was, the greater the biogas yield (~50%). The bio-oil from conventional pyrolysis has a predominantly furanic nature and contained significant amounts of the phenols and benzenes. In contrast, the bio-oil from flash pyrolysis is similar to that of "anthracene oil", both of them being composed mainly of polycyclic aromatic hydrocarbons. The bio-gas obtained by flash pyrolysis is of a higher quality than that obtained by conventional pyrolysis because it has a lower CO content (32.4% vs 66.6%) and higher syngas content (CO + H 2 ) (50.8% vs 26.8%). Flash pyrolysis is better in CH 4 production (11.6% vs 4.6%).

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Chemical and physical analysis of the liquid fractions from soursop seed cake obtained using slow pyrolysis conditions

Cited by 32 publications

References 22 publications

Process intensification of biodiesel synthesis via ultrasound‐assisted in situ esterification of Jatropha oil seeds

Process intensification of biodiesel synthesis via ultrasound‐assisted in situ esterification of Jatropha oil seeds

Biodiesel Production from a Novel Nonedible Feedstock, Soursop (Annona muricata L.) Seed Oil

Pyrolysis technologies for pomegranate (Punica granatum L.) peel wastes. Prospects in the bioenergy sector

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