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 ...

Bamboo is an abundant biomaterial having important potential as a resource for bioenergy development. In this study, the potential of andong (Gigantochloa pseudoarundinacea (Steudel) Widjaja) bamboo for pellet production was evaluated. Some properties of bamboo pellets as density, moisture content, ...

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...

Poor farmers in Indonesia still transport palm fruit bunches manually, so they require a lot of manpower and many of them are transported for a long time, reducing quality. Oil palm farmers have two-wheeled tractors that are used for processing rice fields that can be used for towing trailers. The...