In-situ transesterification of Jatropha curcas L. seeds using homogeneous and heterogeneous basic catalysts

In the present work, microwave heat pretreatment of jatropha curcas seed particles and use of phase transfer catalyst (PTC) to enhance in-situ transesterification were utilized together. It was observed that use of alkaline BTMAOH as a PTC and microwave heat pretreatment of jatropha curcas seed particles had substantially increased the reaction rate of in-situ transesterification as compared to the reaction conducted with microwave untreated seeds in the absence of BTMAOH as a PTC. Statistical model equation was developed to investigate the interaction effect of reaction variables and establish optimum reaction condition. At optimum condition, experimentally obtained FAME yield (93.7±1.53% w/w) was in close agreement with statistical model predicted FAME yield (96.75%) at 38°C and 37 minutes of reaction time.

Download Full-text

In-situ transesterification of Jatropha curcas seeds using the mixture of methanol and isopropanol

2011 National Postgraduate Conference ◽

10.1109/natpc.2011.6136282 ◽

2011 ◽

Cited By ~ 1

Author(s):

Nunung Prabaningrum ◽

Duvvuri Subbarao ◽

Lukman Ismail

Keyword(s):

Jatropha Curcas ◽

In Situ Transesterification

Download Full-text

Identification of Copper in Stems and Roots of Jatropha curcas L. by Hyperspectral Imaging

Processes ◽

10.3390/pr8070823 ◽

2020 ◽

Vol 8 (7) ◽

pp. 823

Author(s):

Juan Francisco García-Martín ◽

Amanda Teixeira Badaró ◽

Douglas Fernandes Barbin ◽

Paloma Álvarez-Mateos

Keyword(s):

Jatropha Curcas ◽

Near Infrared ◽

Prediction Models ◽

Plant Stress ◽

Principal Component ◽

Linear Discriminant ◽

Jatropha Curcas L ◽

Potential Applications

The in situ determination of metals in plants used for phytoremediation is still a challenge that must be overcome to control the plant stress over time due to metals uptake as well as to quantify the concentration of these metals in the biomass for further potential applications. In this exploratory study, we acquired hyperspectral images in the visible/near infrared regions of dried and ground stems and roots of Jatropha curcas L. to which different amounts of copper (Cu) were added. The spectral information was extracted from the images to build classification models based on the concentration of Cu. Optimum wavelengths were selected from the peaks and valleys showed in the loadings plots resulting from principal component analysis, thus reducing the number of spectral variables. Linear discriminant analysis was subsequently performed using these optimum wavelengths. It was possible to differentiate samples without addition of copper from samples with low (0.5–1% wt.) and high (5% wt.) amounts of copper (83.93% accuracy, >0.70 sensitivity and specificity). This technique could be used after enhancing prediction models with a higher amount of samples and after determining the potential interference of other compounds present in plants.

Download Full-text

Reactive extraction and in situ esterification of Jatropha curcas L. seeds for the production of biodiesel

Fuel ◽

10.1016/j.fuel.2009.07.011 ◽

2010 ◽

Vol 89 (2) ◽

pp. 527-530 ◽

Cited By ~ 109

Author(s):

Siew Hoong Shuit ◽

Keat Teong Lee ◽

Azlina Harun Kamaruddin ◽

Suzana Yusup

Keyword(s):

Jatropha Curcas ◽

Reactive Extraction ◽

Jatropha Curcas L ◽

In Situ Esterification

Download Full-text

Sistemas de captação de água "in situ" sobre crescimento de pinhão manso

Revista Verde de Agroecologia e Desenvolvimento Sustentável ◽

10.18378/rvads.v9i4.3169 ◽

2014 ◽

Vol 9 (4) ◽

pp. 230

Author(s):

Eduardo Maciel Oliveira Laime ◽

Carlos Alberto Vieira de Azevedo ◽

Pedro Dantas Fernandes ◽

José Alberto Calado Wanderley ◽

Anderson Bruno Anacleto de Andrade

Keyword(s):

Jatropha Curcas ◽

Jatropha Curcas L

O pinhão-manso (Jatropha curcas L.) é uma planta oleaginosa, da família das euforbiáceas, nativa das Américas e, atualmente, considerada uma alternativa para produção de biodiesel, exigente a insolação e resistente à seca. Nesta pesquisa, os estudos foram voltados para a avaliação do desenvolvimento da cultura do pinhão-manso, testando técnicas de plantio que contribuem para maior eficiência de captação de água de chuvas in situ. O experimento foi desenvolvido nas instalações da Estação Experimental do Instituto Nacional do Semiárido - INSA, localizada no município de Campina Grande-PB. O delineamento estatístico utilizado foi em blocos casualizados, com três repetições, sendo estudados cinco técnicas de captação de água in situ. Ao longo do ciclo as variáveis de crescimento são beneficiadas pelas formas de preparação do solo, para favorecer a captação de água in situ, em comparação ao tratamento com ausência de técnica de captação.

Download Full-text