Biodiesel as a promising alternative fuel has a major technical drawback which is its instability during storage. One of the solutions to this problem is the addition of antioxidants to improve sto…
Cocoa beans, as the raw material of chocolate production, are one of the biggest export commodity in Indonesia. The beans are retrieved from the cocoa fruit removing the cocoa pod husk (CPH). CPH i…
Natural gas is one type of energy source that people rely on. With the depletion of natural gas over time, an alternative energy source is needed to replace natural gas and it is biogas. With a hug…