Diesel Engine Emission Characteristics Study using Algae Biofuel

547-551The purpose of this study is to determine the benefits of using algal biodiesel blends in motorized vehicles, as well as knowing the extent to which the biodiesel mixture can reduce its emissions to suppress the impact on the environment. The engine employed was coupled to a dynamometer and evaluated at a speed of 1500 rpm at various degrees of load. FTIR spectrum of the oil and biodiesel was studied. Various emission parameters such as carbon monoxide, unburnt hydrocarbon, nitrogen oxides and smoke opacity were analyzed using AVL emission analyzer. The results of this study have indicated a mixture of quality effects of biodiesel against diesel. In various scenarios the biodiesel blends showed a significant reduction in environmental impact

Diesel Engine Performance on Chlorella vulgaris Biodiesel

843-845This research paper highlights the results of analyses conducted to assess performance characteristics of an unmodified CI engine fuelled by a new third-generation biodiesel derived from Chlorella vulgaris algae oil and its mixtures with neat diesel. A single-cylinder direct injection ignition compression engine was used to prepare and test three separate fuels at a rated speed of 1500 rpm. Parameters such as torque, net power, specific fuel consummation and thermal efficiency were evaluated for the engine output. Results from the experiment show that use of algae oil blend in diesel engine has performed better for the studied parameters

Combustion Analysis using Third Generation Biofuels in Diesel Engine

449-452In this study the use of Chlorella vulgaris biodiesel blends are tested in a naturally aspirated dual fuel diesel engine with various load conditions at a rated speed of 1500 rpm. In the engine, the test fuels such as B20 injection, B20 blending and diesel were prepared and tested. The combustion characteristic has provided a better understanding of the operation of the engine in dual-fuel mode. The combustion analysis was done at the injection timings of 23° angle before top dead centre with an injection pressure of 220 bars. The results show that 20% blend of Chlorella vulgaris microalgae biodiesel with 80% diesel produced higher cylinder pressures, heat release rate, lower combustion duration, and ignition delay as compared to diesel fuel. The experimental outcomes indicate that the usage of algae oil blend in diesel engine is a feasible option

Diesel Engine Performance on Chlorella vulgaris Biodiesel

This research paper highlights the results of analyses conducted to assess performance characteristics of an unmodified CI engine fuelled by a new third-generation biodiesel derived from Chlorella vulgaris algae oil and its mixtures with neat diesel. A single-cylinder direct injection ignition compression engine was used to prepare and test three separate fuels at a rated speed of 1500 rpm. Parameters such as torque, net power, specific fuel consummation and thermal efficiency were evaluated for the engine output. Results from the experiment show that use of algae oil blend in diesel engine has performed better for the studied parameters

Green synthesis of magnesium oxide nanoparticles and their antibacterial activity

1210-1215Nanotechnology has prospects of opening new avenues to fight and prevent diseases using atomic-scale tailoring of materials. As the nano revolution emerges, it is imperative to develop “nano‑naturo” links between nanotechnology and green domains of the nature. The present investigation describes the mangrove Rhizophora lamarckii’s property of synthesizing magnesium oxide nanoparticles . The newly synthesized magnesium oxide nanoparticle morphology is nanohexagonal and spherical. The particles range in dimensions between 20 and 50 nm and are crystalline in nature. The functional groups of the mangrove, amine, and alkane are found to act as reductants and stabilizers. The newly synthesized MgO nanoparticles are found to have potent antibacterial activity

Mangrove-Mediated Green Synthesis of Silver Nanoparticles with High HIV-1 Reverse Transcriptase Inhibitory Potential

Nowadays, the interactions of metal nanoparticles with microorganisms and parasites of public health importance receive increasing attention due to their functional versatility and multipurpose effectiveness. In this research, green biosynthesis of antiviral silver nanomaterials was achieved allowing the reduction of Ag+ ions by the aqueous leaf extract of mangrove Rhizophora lamarckii. The reduction of metal ions to metallic nanosilver occurred readily in the aqueous solution and resulted in high density of extremely stable and crystalline silver nanoparticles, with mean size ranging from 12 to 28 nm. Green-fabricated silver nanoparticles exhibit high HIV type 1 reverse transcriptase inhibitory activity, even when tested at low doses. In vitro, the mangrove-fabricated silver nanoparticles showed an IC50 of 0.4 μg/ml on the HIV-1 RTase. Overall, our results highlighted the promising potential of mangrove-synthesized metal nanoparticles in the fight against HIV and other viruses of public health importance

Aegiceras corniculatum-Mediated Green Synthesis of Silver Nanoparticles: Biophysical Characterization and Cytotoxicity on Vero Cells

Nowadays, silver nanoparticles receive increasing attention in nanomedicine, due to their characteristics which allow numerous biological applications. In this study, a biofabrication protocol was formulated to synthesize silver nanoparticles using a mangrove extract of Aegiceras corniculatum. The bio-physical characterization of mangrove-fabricated silver nanoparticles were carried out using UV–vis spectrophotometry, FTIR spectroscopy, XRD analysis and HRTEM. In vitro cytotoxicity assays of mangrove fabricated silver nanoparticles was made in comparison with chemically synthesized silver nanoparticles on Vero cell lines. MTT assay was applied in order to investigate the cytotoxic nature of the mangrove fabricated and chemically synthesized silver nanoparticles. The concentration which caused 50 % cell death (CC50) was 18.79 ± 0.9 μg/mL in the cells treated with mangroves fabricated silver nanoparticles whereas chemically synthesized silver nanoparticles produced the same effect (i.e. 50 % cell death) at 8.96 ± 0.8 μg/mL. Results showed that the mangrove-fabricated silver nanoparticles was more biocompatible when compared with chemically synthesized silver nanoparticles, highlighting their promising potential as nanocarriers in pharmacology and nanomedicine