Yazar "Munuswamy, Dinesh Babu" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Öğe
    Biofuel from leather waste fat to lower diesel engine emissions: Valuable solution for lowering fossil fuel usage and perception on waste management
    (Institution of Chemical Engineers, 2022) Devarajan, Yuvarajan; Jayabal, Ravikumar; Munuswamy, Dinesh Babu; Ganesan, S.; Varuvel, Edwin Geo
    This work examines the viability of examining waste fat extracted from industrial leather waste as an alternative to diesel. These wastes are harmful if disposed to the environment. Conventional transesterification was per- formed to produce leather waste methyl ester (LWME). Post-processing, a yield of 82.6% of methyl ester was obtained. The obtained LWME was inspected for its thermophysical properties and falls with ASTM standards. LWME was blended with petroleum diesel at 10%, 20% and 30% on a volume basis and referred to as LWME10D90, LWME20D80 and LWME30D70 correspondingly. The effect of LWME/ diesel blends was inspected in a four-stroke, single-cylinder, direct-injection engine under diverse loads. Test results revealed that the brake thermal efficiency for LWME/ diesel blends was lower than diesel at all loads with higher specific brake-specific fuel consumption was higher as both are inversely proportional. Carbon monoxide emissions were reduced by 22.7%, Hydrocarbon emissions were reduced by 48%, and Smoke emissions were reduced by 6.43%, with a 9.84% increase in nitrogen oxide emissions for LWME30D70 than diesel. It has been concluded that including LWME in diesel lowers the greenhouse gases with a marginal reduction in performance pattern.
  • Küçük Resim
    Öğe
    Inedible oil feedstocks for biodiesel production: A review of production technologies and physicochemical properties
    (Elsevier B.V., 2022) Devarajan, Yuvarajan; Munuswamy, Dinesh Babu; Subbiah, Ganesan; Vellaiyan, Suresh; Nagappan, Beemkumar; Varuvel, Edwin Geo; Thangaraja, Jeyaseelan
    Biodiesel emits lesser harmful pollutant emissions than renewable and biodegradable ones compared diesel. Research confirms that edible products and crops are the major sources of biofuel production. Excessive usage of these crops leads to higher production costs, economic imbalance, and depletion of food supply. Biofuel production from inedible sources shall lower the drawbacks of edible products and crops. Inedible feedstocks are the sustainable source of biofuel production as they are mostly grown on waste/abandoned land, produce similar or higher yields than edible feedstocks, and are fairly cost-effective. Hence this present work reviews the challenges and possibilities of employing inedible oil and products as a potential feedstock for biofuel production. Salient features of inedible oil such as production technologies, cost and benefits, fatty acid and physicochemical properties and oil extraction technology are reviewed from the latest literature. The outcome of this study suggests that there is a huge prospect of utilizing inedible oil as a reliable feedstock for biofuel generation. Among various production processes, scCO2 extraction technology proved to reduce inedible oil's moisture by 70% and FFA content by 62%, with a higher conversion rate of about 97%, as methanol in supercritical conditions has lesser interaction with the FFA of inedible oil. Inedible feedstocks are effective, non-toxic and safe in biofuel production. However, there exists a challenge in restricting its development in large-scale commercialization.
  • Küçük Resim
    Öğe
    Processing and utilization of an eco-friendly oil as heat transfer fluid derived from camelina seeds
    (WILEY, 2022) Devarajan, Yuvarajan; Munuswamy, Dinesh Babu; Vellaiyan, Suresh; Jayabal, Ravikumar; Varuvel, Edwin Geo; Natrayan, L.
    Bio-oil from nonedible sources is an ideal alternative for thermal oil in solar and heat applications. The significant merits of bio-oil in high-temperature applications are less volatile, higher availability, non-hazardous, environmentally friendly, and renewable resources. Heat transmission fluids (HF) are a medium that transfers heat in all solar heating applications. Generally, mineral oils derived from crude oil act as HF, harming humans and the environment during their disposal. This negative effect shall be lowered by replacing conventional fluids with bio-oil developed from vegetable or synthetic oil. Of late, fats obtained from waste and inedible sources are promising in solar applications as they eliminate associated issues. This study uses eco-friendly bio-oil as a heat transfer fluid obtained from camelina oil. Camelina oil is of inedible vegetable source and is produced by cold pressing from the Camelina sativa seeds. Heat transfer fluid is produced by subjecting raw camelina oil to a base catalyst reaction. No work till date has investigated the camelina oil as an eco-friendly heat transfer fluid. Various parameters for obtaining a higher yield of fluid with lower reagents waste are analyzed in this study. After conversion, the camelina oil was reviewed for its suitability as a heat transfer fluid. Variations in critical properties such as density, thermal conductivity, specific heat capacity, and dynamic viscosity with temperature are analyzed. Results revealed that the properties of bio-oil provided are comparable with conventional fluids. Based on the results, the maximum reaction efficiency of about 93% was achieved at 600 rpm of agitation speed, 1% wt of NaOH concentration, 5.5:1 molar proportion, and 65 degrees C of reaction temperature. The critical properties of camelina bio-oil improved with temperature and depend on the composition of fatty acids. Hence, CME acts as an improved heat transfer fluid and shall be a probable applicant to replace the synthetic fluid in heating applications.