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As petroleum prices are rising continuously biodiesel production has been receiving worldwide awareness. Thus for its production the requirement for non-edible and unidentified feedstocks has risen. This research presents the production and process optimization of biodiesel obtained from non-edible feedstock namely cedar wood(Cedrus deodara) oil, with response surface methodology using statistical software minitab 18.0. Cedar Wood (Cedrus deodara) is a tree accessible in different parts of the world like India and Nepal. In Indian context, these are available in abundance especially in the forests of Himalayan region as a non-edible feedstock. Methyl ester of Cedar Wood Oil is prepared by process known as Transesterification. The FFA content of cedar wood oil was 0.5% which is below the 2% suggested for the application of the one step alkaline transesterification method.

Exploring and enhancement of biodiesel production from feedstock like non-edible vegetable oil is one of the powerful method to resolve inadequate amount of conventional raw materials and their high prices. The main aim of this study is to optimize the biodiesel production process parameters of a biodiesel obtained from non-edible feedstocks, namely Neem (Azadirachta indica) oil and Sesame (Sesamum indicum L.) oil, with response surface methodology using Doehlert’s experimental design. Based on the results, the optimum operating parameters for transesterification of the mixture A50S50 oil mixture at 51.045° C over a period of 45 minutes are as follows: methanol-to-oil ratio: 8.45, and catalyst concentration: 1.933 wt.%. These optimum operating parameters give the highest yield for the A50S50 biodiesel with a value of 95.24%.

Dependency and increase in use of fossil fuels is leading to its depletion and raises serious environmental concerns. There are international obligations to reduce emissions and requirements to strengthen security of fuel supply which is pressuring the automobile industry to use cleaner and more sustainable fuels. Hydrogen fits these criteria as it is not just an abundant alternative but also a clean propellant and Hydrogen engines represent an economic alternative to fuel cells. In the present investigation, EGR has been used on hydrogen boosted SI engine running on gasoline-methanol and ethanol-gasoline blends to determine the additional advantages of the same compared to pure gasoline operation and gasoline-methanol and ethanol-gasoline blends without EGR.

Non-edible vegetable oils have a huge potential for biodiesel production and also known as second generation feedstock’s. Biodiesel can be obtained from edible, non-edible, waste cooking oil and from animal fats also. This paper focuses on production of biodiesel obtained from mixture of sesame (Sesamum indicum L.) oil and neem (Azadirachta indica) oil which are easily accessible in India and other parts of world. Neem oil has higher FFA content than sesame oil. Biodiesel production from neem oil requires pretreatment neutralization procedure before alkali catalyzed Trans esterification process also it takes large reaction time to achieve biodiesel of feasible yield. Neem oil which has very high FFA and sesame oil which has low FFA content are mixed and this mixture is Trans esterified with no pre-treatment process using molar ratio of 6:1.Fuel properties of methyl ester were close to diesel fuel and satisfied ASTM 6751 and EN 14214 standards.