scholarly journals A new approach in maximizing and direct utilization of whole Jatropha curcas L. kernels in biodiesel production – Technological improvement

2016 ◽  
Vol 85 ◽  
pp. 759-765 ◽  
Author(s):  
Alchris Woo Go ◽  
Sylviana Sutanto ◽  
Siti Zullaikah ◽  
Suryadi Ismadji ◽  
Yi-Hsu Ju
Keyword(s):  
Jatropha Curcas ◽  
Biodiesel Production ◽  
New Approach ◽  
Jatropha Curcas L ◽  
Technological Improvement

scholarly journals Morphophysiological Traits as Indicators of Genetic Diversity in Brazilian Populations of Jatropha curcas L. Grown Under Water Deficit

2020 ◽  
Vol 8 (3) ◽  
pp. 527
Author(s):  
Leandro Dias da Silva ◽  
Fábio Pinto Gomes ◽  
Mateus Pires Barbosa ◽  
Raul Antônio Araújo do Bonfim ◽  
Mikaela Oliveira Souza ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Plant Height ◽  
Principal Components ◽  
Jatropha Curcas ◽  
Biodiesel Production ◽  
Physiological Traits ◽  
Guaiacol Peroxidase ◽  
Jatropha Curcas L ◽  
Root Area ◽  
Genetic Dissimilarity

Jatropha curcas L. (Euphorbiaceae) is a species grown in tropicalcountries and used for biodiesel production. Morphophysiological traits were analyzed to assess the genetic diversity in nine genotypes of J. curcas under deficit water. Seeds of plants from different populations, collected in diferente brazilian regions, were grown under two water regimes (100% and 50% tank capacity). Multivariate analysis was used to characterize genetic diversity. The UPGMA dendrogram built from the genetic distance group indicated the segregation of genotypes into five groups for growth traits and six groups for physiological traits. Then, an principal components analysis was carried out, to evaluate the pattern of character variations and then segregate the characteristics that could distinguish parental genotypes for use in plant breeding. Results showed 65.50% and 56.02% for the two first principal components of growth and physiological traits, respectively. Total root area was the most determining trait for genetic dissimilarity (18.9%) and group formation, followed by plant height (17.9%) and number of leaves (17.6%). On the other hand, stomatal conductance (gs) (24.9%) and guaiacol peroxidase (GPX) (20.9%) were the most determining physiological traits. The analysis of morphophysiological traits indicated CNPAE-298 and 299 as the most distant genotypes among the plant groups. Under water-limited conditions, total root area, plant height, gs and GPX were the most efficient traits to explain genetic dissimilarity among the genotypes, and for this reason they should be referred as a priority for further studies on genotypes selection in this species.

Biodiesel production from high free fatty acids content Jatropha curcas L. oil using dual step process

2013 ◽  
Vol 3 (4) ◽  
pp. 361-369 ◽  
Author(s):  
Purabi Mazumdar ◽  
Swaroopa Rani Dasari ◽  
Venu Babu Borugadda ◽  
Garima Srivasatava ◽  
L. Sahoo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Jatropha Curcas ◽  
Biodiesel Production ◽  
Step Process ◽  
Jatropha Curcas L

scholarly journals Effects of Genotype, Direct Sowing and Plant Spacing on Field Performance of Jatropha curcas L.

Agronomy ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 465
Author(s):  
Zafitsara Tantely Andrianirina ◽  
Matthias Martin ◽  
Euloge Dongmeza ◽  
Elisa Senger
Keyword(s):  
Seed Yield ◽  
Jatropha Curcas ◽  
Seed Quality ◽  
Field Performance ◽  
Correct Choice ◽  
Biodiesel Production ◽  
Oilseed Crop ◽  
Jatropha Curcas L ◽  
Seed Yields ◽  
Direct Sowing

The tropical multiuse tree Jatropha curcas L. (jatropha) is highly promoted as oilseed crop for biodiesel production and for climate change mitigation, but cultivation practices require further research. The objectives of this study were to assess the effects of varying plant spacings (2.0 m × 4 m compared to 1.5 m × 4 m), crop establishment methods (raising plantlets in a nursery prior to planting to the field compared to direct sowing) and genotypes on seed yield, seed quality and plant height, recorded at a dry-subhumid location in Madagascar (Ihosy) and at a humid location in Cameroon (Batchenga). Averaged across treatment variants and genotypes, seed yield and seed oil content were higher at the dry-subhumid site and in particular the narrower spacing reached higher seed yields per unit area than the wider spacing. At the humid site, plant growth was characterized by strong accumulation of biomass. The establishment method tested at the dry-subhumid site showed no significant differences in the recorded parameters. Our results encourage to re-think common practices in jatropha cultivation and underpin the importance of the correct choice of location, genotype and agronomic practices considering the interactions between all factors.

Pemanfaatan Abu Sabut Kelapa sebagai Katalis Basa dalam Pembuatan Biodiesel dari Minyak Biji Jarak Pagar (Jatropha curcas. L)

2016 ◽  
Vol 9 (1) ◽  
pp. 50-55
Author(s):  
Saibun Sitorus
Keyword(s):  
Water Content ◽  
Iodine Number ◽  
Jatropha Curcas ◽  
Acid Number ◽  
Biodiesel Production ◽  
Base Catalyst ◽  
Jatropha Curcas Oil ◽  
Jatropha Curcas L ◽  
Coconut Husk ◽  
Weight Variation

The research about utilization ash of coconut husk as source of base catalyst in aplication for reaction of transesterification from Jatropha curcas oil has been researched. Content of base compound in coconut husk ash was analyzed by AAS and acidy alkalimetry. The base catalyst was extracted using methanol, for transesterification reaction of Jatropha curcas oil. This method of biodiesel production by transesterification process used coconut husk ash catalyst by weight variation as much as 2%, 4%, 6%, 8% and 10% (w/w). Analysis of the quality of biodiesel is done with quality parameters acid number, iodine number, density, viscosity and water content in accordance with SNI 04-7182-2006 standards. The result of the research showed that potassium concentration as carbonat salt in the ash of coconut husk was 17,4% (w/w) and the conversion of biodiesel obtained from each catalyst in a row is 43,62%; 78,45%; 76,22%; 75,69% and 63,27% (w/w). Biodiesel optimum results obtained with the addition of the catalyst are 4% with density values of 0.86 (g / mL), the viscosity value of 3.23 (cSt), the value of water content 0.0352%, 0.12 acid number (mg KOH / g) and iodine number of 8.23 (g I2 / 100 g).The research about utilization ash of coconut husk as source of base catalyst in aplication for reaction of transesterification from Jatropha curcas oil has been researched. Content of base compound in coconut husk ash was analyzed by AAS and acidy alkalimetry. The base catalyst was extracted using methanol, for transesterification reaction of Jatropha curcas oil. This method of biodiesel production by transesterification process used coconut husk ash catalyst by weight variation as much as 2%, 4%, 6%, 8% and 10% (w/w). Analysis of the quality of biodiesel is done with quality parameters acid number, iodine number, density, viscosity and water content in accordance with SNI 04-7182-2006 standards. The result of the research showed that potassium concentration as carbonat salt in the ash of coconut husk was 17,4% (w/w) and the conversion of biodiesel obtained from each catalyst in a row is 43,62%; 78,45%; 76,22%; 75,69% and 63,27% (w/w). Biodiesel optimum results obtained with the addition of the catalyst are 4% with density values of 0.86 (g / mL), the viscosity value of 3.23 (cSt), the value of water content 0.0352%, 0.12 acid number (mg KOH / g) and iodine number of 8.23 (g I2 / 100 g).ABSTRAKPenelitian tentang pemanfaatan abu sabut kelapa sebagai sumber katalis basa pada aplikasi reaksi transesterifikasi minyak biji jarak pagar (Jatropha curcas. L) telah dilakukan. Karakterisasi kadar basa dalam sabut kelapa dilakukan dengan AAS dan alkalinitas. Katalis basa diperoleh dengan pengadukan abu sabut kelapa dalam metanol dan selanjutnya digunakan untuk reaksi transesterifikasi minyak biji jarak pagar (Jatropha curcas. L). Metode pembuatan biodiesel ini dengan transesterifikasi menggunakan katalis abu sabut kelapa dengan variasi berat sebanyak 2%, 4%, 5%, 6%, 8% dan 10% (b/b). Analisis kualitas dari biodiesel dilakukan dengan parameter mutu bilangan asam, bilangan iod, densitas, viskositas dan kadar air sesuai dengan standar SNI 04-7182-2006. Hasil penelitian menunjukkan bahwa kadar kalium dalam bentuk kalium karbonat dalam abu sabut kelapa sebesar 17,4% (b/b) dan konversi biodiesel yang diperoleh dari masing masing katalis berturut-turut adalah 43,62%; 78,45%; 76,22%; 75,69% dan 63,27% (b/b). Hasil optimum biodiesel diperoleh dengan penambahan katalis 4% dengan nilai densitas 0,86 (g/mL), nilai viskositas 3,23 (cSt), nilai kadar air 0,0352%, bilangan asam 0,12 (mg KOH/g) dan bilangan iod sebesar 8,23 (g I2/100 g). Kata kunci :    Abu sabut kelapa, biodiesel, transesterifikasi, minyak biji jarak pagar(Jatropha curcas. L)

scholarly journals Morphophysiological profile of Jatropha curcas L. fruits and seeds maturation

2015 ◽  
Vol 36 (6) ◽  
pp. 3615 ◽  
Author(s):  
Cristiane Dantas de Brito ◽  
Marta Bruno Loureiro ◽  
Aliomar Pacheco de Souza Junior ◽  
Luzimar Gonzaga Fernandez ◽  
Renato Delmondez de Castro
Keyword(s):  
Jatropha Curcas ◽  
Dry Matter ◽  
Arid Regions ◽  
Industrial Applications ◽  
Biodiesel Production ◽  
Dry Matter Accumulation ◽  
Harvest Time ◽  
Water Restriction ◽  
Physiological Profile ◽  
Jatropha Curcas L

Jatropha curcas L. (Euphorbiaceae), known as physic nut, is an oil seed species suitable as feedstock for biodiesel production, among other possible industrial applications. It is also considered tolerant to water restriction and is thus suitable for cultivation in semi-arid regions. However, the lack of uniformity in fructification and seed maturation hinders the harvest and processing of fruits and seeds and the yields from both oil and seed, as well as obtaining seed lots with good physiological qualities as propagule. Thus, the aim of this study was to characterise the physiological profile during the development and maturation of J. curcas seeds and to identify the best time to harvest the fruits and seeds based on morphological and physiological aspects. Fruit and seed development was monitored and the fruits were harvested at the end of the maturation phase. Then, they were visually classified in six distinct stages of maturation based on the size and colour of the exocarp, whereas the seeds were classified into 13 distinct stages based on the appearance of the fruit and colour of the tegument. The overall analysis of the parameters indicated that the best harvest time was when the fruits were brown and brown-dry and the seeds presented maximum dry matter accumulation, lower moisture content, the highest germination and vigour, higher lipid content and stable length and width dimensions. Whereas these parameters are related to physiological maturation in J. curcas seeds.

Supercritical extraction and fractionation of Jatropha curcas L. oil for biodiesel production

2015 ◽  
Vol 97 ◽  
pp. 100-106 ◽  
Author(s):  
Carmen María Fernández ◽  
Luca Fiori ◽  
María Jesús Ramos ◽  
Ángel Pérez ◽  
Juan Francisco Rodríguez
Keyword(s):  
Jatropha Curcas ◽  
Supercritical Extraction ◽  
Biodiesel Production ◽  
Jatropha Curcas L

scholarly journals Potential of Jatropha curcas L. as Biodiesel Feedstock in Malaysia: A Concise Review

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 786 ◽  
Author(s):  
Nurul Husna Che Hamzah ◽  
Nozieana Khairuddin ◽  
Bazlul Mobin Siddique ◽  
Mohd Ali Hassan
Keyword(s):  
Palm Oil ◽  
Jatropha Curcas ◽  
Fossil Fuel ◽  
Biodiesel Production ◽  
Food Sources ◽  
Ethical Challenge ◽  
Jatropha Curcas L ◽  
Biodiesel Feedstock ◽  
Fuel Substitution ◽  
Efficient Alternative

Fluctuation in fossil fuel prices and the increasing awareness of environmental degradation have prompted the search for alternatives from renewable energy sources. Biodiesel is the most efficient alternative to fossil fuel substitution because it can be properly modified for current diesel engines. It is a vegetable oil-based fuel with similar properties to petroleum diesel. Generally, biodiesel is a non-toxic, biodegradable, and highly efficient alternative for fossil fuel substitution. In Malaysia, oil palm is considered as the most valuable commodity crop and gives a high economic return to the country. However, the ethical challenge of food or fuel makes palm oil not an ideal feedstock for biodiesel production. Therefore, attention is shifted to non-edible feedstock like Jatropha curcas Linnaeus (Jatropha curcas L.). It is an inedible oil-bearing crop that can be processed into biodiesel. It has a high-seed yield that could be continually produced for up to 50 years. Furthermore, its utilization will have zero impact on food sources since the oil is poisonous for human and animal consumption. However, Jatropha biodiesel is still in its preliminary phase compared to palm oil-based biodiesel in Malaysia due to a lack of research and development. Therefore, this paper emphasizes the potential of Jatropha curcas as an eco-friendly biodiesel feedstock to promote socio-economic development and meet significantly growing energy demands even though the challenges for its implementation as a national biodiesel program might be longer.

scholarly journals Two-step Biodiesel Production from Crude Jatropha curcas L. Oil Using Ultrasonic Irradiation Assisted

2012 ◽  
Vol 61 (4) ◽  
pp. 165-172 ◽  
Author(s):  
Ittipon Worapun ◽  
Kulachate Pianthong ◽  
Prachasanti Thaiyasuit
Keyword(s):  
Ultrasonic Irradiation ◽  
Jatropha Curcas ◽  
Biodiesel Production ◽  
Jatropha Curcas L

scholarly journals In-situ Transesterification of Jatropha curcas L. Seeds for Biodiesel Production using Supercritical Methanol

2017 ◽  
Vol 97 ◽  
pp. 01082 ◽  
Author(s):  
M.A.M. Ishak ◽  
K. Ismail ◽  
W.I. Nawawi ◽  
Ali H. Jawad ◽  
A.Y. Ani ◽  
...  
Keyword(s):  
Jatropha Curcas ◽  
Biodiesel Production ◽  
Supercritical Methanol ◽  
In Situ Transesterification ◽  
Jatropha Curcas L
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