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

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.

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ULTRASONICATED JATROPHA CURCAS SEED RESIDUAL AS POTENTIAL BIOFUEL FEEDSTOCK

Jurnal Teknologi ◽

10.11113/jt.v77.4340 ◽

2015 ◽

Vol 77 (1) ◽

Cited By ~ 2

Author(s):

M. Shahrir M. Zahari ◽

S. B. Ismail ◽

Mohd Zamri Ibrahim ◽

Su Shiung Lam ◽

Ramli Mat

Keyword(s):

Jatropha Curcas ◽

Soxhlet Extraction ◽

Extraction Process ◽

Raw Material ◽

Reactive Extraction ◽

Bioethanol Production ◽

Alkaline Catalyst ◽

Positive Effects ◽

Pre Treatment

This study focuses on the prospect of Jatropha Curcas seed residual from the ultrasonic in-situ process which is used as a biofuel raw material especially for producing bioethanol. Reactive extraction process coupled with ultrasonic system were used for simultaneous oil extraction and transesterification of Jatropha Curcas seed. Using ethanol as the solvent, alkaline catalyst (sodium hydroxide) and with the aid of ultrasonic device, about 50% oil from the initial seeds was extracted, which is equivalent to Soxhlet extraction performance. The seeds were being chemically and physically characterized with ultimate analyses, with SEM and XRD as potential bioethanol raw material. SEM and XRD profile exhibited loosen compounds in the ultrasonicated residues and provided a better accessible and easier degradable fiber for assisting bioethanol production process compared to the initial seeds. The positive effects of the ultrasonic reactive extraction for Jatropha Curcas seed pre-treatment is beneficial towards bioethanol production and could further be used as a solvent in the latter process.

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

MATEC Web of Conferences ◽

10.1051/matecconf/20179701082 ◽

2017 ◽

Vol 97 ◽

pp. 01082 ◽

Cited By ~ 2

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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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.

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