This study aims to separate glycerol from used cooking oil biodiesel products. This research is done by main process by analyzing free fatty acid level (FFA) to know the fat content of the oil to determine the next process. This research is done by electrolysis process using high voltage. We did transesterification process by using methanol and NaOH as catalyst before performing the process of electrolysis with high voltage. Biodiesel is manufactured using a mini-scale stirred tank reactor (RATB) laboratory. This process is heated at temperature (35-60)C, the ratio of used cooking oil and methanol (5:1, 6:1, 7:1, 8:1, 9:1) using a 0.1 N NaOH catalyst. The research obtained optimum reaction temperature yield highest percentage of yield at temperature 60C and ratio of used cooking oil and methanol 5:1 with percentage of yield equal to 88.88, cetane number 48.4, kinematic viscosity 2.560, pour point 37.4F, flash point 131F, Conradson Carbon Residue (CCR) 0.09, and ASTM Color 1.5. This shows that the manufacture of biodiesel with high microwave and high voltage utilization yields a high percentage of 88.88 and the product is biosolar-48.

Concerns on the environmental impacts from use of concrete in the construction industry are becoming more widespread. Past and current research trends indicate that cement represents the bulk of emissions from concrete. Thus, its replacement significantly reduces negative impacts in concrete. Incorporation of industrial and agricultural waste products have shown to positively influence properties of concrete. Particularly, sugarcane bagasse ash (SCBA) has shown promising use as a cement replacement, but its environmental performance has not been thoroughly explored in the literature. This study investigates the environmental impacts of concrete with 10% cement replacement by SCBA using a life cycle assessment approach. The results were compared to normal concrete with compressive strength of 45 MPa. A school building was selected as a case study for LCA calculations. The total volume of concrete was obtained through a digital building model constructed using building information modelling (BIM) approach. The Ecoinvent database was used to construct the life cycle inventory while ReCiPe 2016 was used as the impact assessment method. Impacts were presented in the form of 17 midpoint categories. Results show that use of SCBA concrete reduced environmental impacts by an average of 5.5% in all but 3 impact categories. A small increase was observed for water use (1.6%) while significant increases in impacts were observed for ozone depletion (7.4%) and land use (58.4%). Furthermore, approximately 3% cost reductions were achieved when using SCBA concrete over normal concrete.