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Biodiesel is a fuel produced from renewable resources; it is a clean alternative fuel, which has drawn the attention of energy researchers for the last two decades due to the disturbing effect of climate change caused by diesel fuel. This paper focuses on showcasing the qualities of biodiesel produced from used vegetable oil and the positive impact on the alarming change in climate today. This paper presents an experimental investigation on production of biodiesel from used vegetable oil (UVO) gotten from a road side bean cake (akara) seller. The oil that was intended to be thrown out was de-odoured and filtered to remove impurities. The filtered oil was then used for biodiesel production and characterized with physical and fuel properties such as density, viscosity, cloud point, refractive index, specific gravity, ash content, moisture content, flash point and cloud point. The results obtained were afterwards compared to ASTM (American Society for Testing and Materials) and EN (Europe’s) international standards. Two biodiesels samples were produced at different temperatures but the same timings. The biodiesel were produced at 700C at 40mins (biodiesel A) and 1000C at 40mins (biodiesel B) with values of specific gravity (0.98 kg/m3; 0.90 kg/m3), density (936kg/m3; 882kg/m3), kinematic viscosity (1.5mm/s2; 5.5 mm/s2), cloud point (150C; 20C), flash point (2600C min; 2000C min), moisture content (0.07%; 0.04%), refractive index (1.4609; 1.4398) and ash point (0.24%; 0.01%) respectively. On comparison, biodiesel A couldn’t match up to the international standards while biodiesel matched up to the standards given.

Waste generation is inevitable in every human society, although methods of disposal may differ from region to region especially developing and developed nations, yet waste disposal is generally necessary. This study therefore investigated waste disposal practices amongst residents of Oluyole local government area of Ibadan, Oyo State. It was observed that (44.4% ) and (32.4%) of the residents dumped their household refuse with government and private waste collectors respectively, but majority utilized improper waste disposal methods such as dumping in rivers (10.3%), roadsides(14.8%), open dumpsites (20.4%), gutter (9.3%), and open-air burning(33.3%). Larger proportion (97.5%) of the respondents strongly agreed that indiscriminate waste dumping has inimical environmental implications such as flooding, disruption of aesthetic beauty, disease, river pollution amongst others. In order to bring the situation under control, the respondents prefer the full involvement of the government waste collection agency instead of private waste collectors. It is therefore recommended that government waste collector should be empowered to penetrate more traditional core areas for more effective waste collection.

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