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Prospects of biodiesel feedstock as an effective ecofuel source and their challenges  69

           Crambe abyssinica Hochst (Crambe oil), Linum usitatissimum (Linseed oil), Ricinus
           communis (Castor oil), Hevea brasiliensis (Rubber seed oil), Nicotina tabacum L.
           (Tobacco seed oil), Argemone mexicana (Argemone oil), Melia azedarach L. (Azeda-
           rach oil), Schleichera triguga (Kusum oil), Asclepias syriaca (Milk weed), Cerbera
           odollam (Sea mango), and Moringa [7, 19, 41].
              A major factor in the production of biodiesel is the cost of raw materials (A). There-
           fore, the cultivation of selected feedstocks as well as factors such as the soil type,
           maturity age, and expected life cycle are considered. Other factors such as the percent-
           age weight of oil and the fatty acid composition (saturated, monounsaturated, and
           polyunsaturated) are included and their values are shown in Tables 3.7–3.10.

           3.2.2.1 Jatropha (Jatropha curcas L.)
           The oil of Jatropha curcas L., commonly referred to as Jatropha oil, has been consid-
           ered a potential oil in various parts of the world for biodiesel production. The tree can
           survive in a wide variety of soils and requires little management for cultivation. It


            Table 3.7 Cultivation and life cycle of selected nonedible oil

                                                          Rainfall  Temperature
            Oil type     Soil type  Maturity  Life-cycle  (mm)      (°C)
            Jatropha     Any type  12months b  50years  c  480–2400 a  20–28 a
                         of soil a
            Mahua oil    Deep     10years d  60years e    550–1500 a  46 a
                         clay a
            Neem oil     Deep     Maximum    150–200years f  750–1000 a  15–45 a
                         clay a   productivity
                                  after
                                  15years a
            Tamanu oil   Sand/    –          –            750–5000 a  48 a
                         loamy a
            Yellow                18months g              –
            oleander
            Moringa      Sandy    6–8months a  –          250–3000 a  19–28 a
            oleifera oil  soil e
            Karanja oil  Wide     4–7years a  –           500–2500 a  38 a
                         range,
                         well-
                         drained
                         soil h

            a
            Ref. [7].
            b
            Ref. [8].
            c
            Ref. [9].
            d
            Ref. [10].
            e
            Ref. [11].
            f
            Ref. [12].
            g
            Ref. [2].
            h
            Ref. [1].
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