Biodiesel is one of alternative energy of diesel engine or diesel fuel from transesterification method by reacting waste cooking oil with methanol that will produce methyl ester and glycerol with the aid of basic catalyst. The aims of this research to observe the influence of temperature and...

Soil erosion can cause some soil damage, which causes a decrease in land productivity. So, there needs to be an analysis of the erosion of the use of soil. Several methods can use the estimation of erosion. This study compares the actual erosion determined with an erosion simulator experiment and...

The studies on the Crop Water Productivity (CWP) of cocoa to increase productivity in the midst of water scarcity and climate change are currently underdeveloped. Thus, this study aims to find out the trends in climate, productivity, crop water use and CWP of cocoa plantations. The methods included ...

Monitoring and regulating water levels in oil palm swamps has an essential role in providing sufficient water for crops and conserving the land to not easily or quickly deteriorate. Presently, water level is still manual and has weaknesses, one of which is the accuracy of the data taken depending...

Brake pads are generally made of asbestos, which is less environmentally friendly and widely available in nature, therefore motorcycle brake pads are made that utilize palm frond fibers filled with alumina powder and bonded to a polyurethane matrix. This research was conducted at the Laboratory of...

The cutting of palm frond using manual produces low productivity and high accident risk. Therefore, it is required a mechanical dodos can increase its productivity and reduces the risk of work accident. The purpose of this research was to determine work capacity, workload and energy requirement....

The objective of this study was to evaluate the effects of torrefaction temperature on the physical and mechanical properties of betung bamboo (Dendrocalamus asper) pellets. Torrefaction was conducted in an electric furnace at 200°C, 240°C, and 280°C for 50 minutes. The physical properties...

The study aimed to determine the effects of adhesive content on rubber wood charcoal briquette characteristics. Wood charcoal was produced using a double-drum retort kiln at > 500°C. Wood charcoals were crushed into powder and then mixed with tapioca adhesive of 5%, 10%, and 15%. The...

This study aims to examine the process of cleaning for synthesis gas (syngas) resulted from candlenut shell gasification by using a cyclone. Research was started by design or manufacture a cyclone as a tool that can condense the tar carried in the syngas produced from the gasification process. This ...

Grain (Oryza sativa L.) drying process is generally still done traditionally by direct sunlight. The drying process has several disadvantages such as it can only be done when sunlight is available, a longer drying time, a large area, requirement. An alternative that could be done to dry the grain...