Study on the Biogas Production Process from a Mixture of Cattle and Poultry Manure with the Addition of Cocoa Pod Husk Waste

Abstrak

This study aims to examine the biogas production process from a mixture of cattle and poultry manure with the addition of cocoa pod husk waste. The research subjects included cocoa farmers who are still in production and cattle and poultry farmers who supply raw materials in the form of cattle manure, poultry manure, and cocoa pod husks. Data were collected through observation and documentation. The results showed that biogas formation with the addition of cocoa pod husks began in the second week and produced a flame in the seventh week. The pH values before and after fermentation were 7.09 and 7.52, respectively. Temperature measurements indicated that the environmental and reactor temperatures ranged from 24–33°C. Gas productivity, based on calculations from the temporary storage volume, was 0.043 m³. The flame test showed a predominantly blue flame with slight reddish-yellow hues, lasting for 3 minutes and 44 seconds. Based on descriptive analysis of gas formation, pH, temperature, productivity, and flame test results, the produced biogas met most of the expected indicators, although gas productivity had not yet reached the optimal standard.

Kata kunci

• Biogas
• Fermentation
• cattle manure
• cocoa pod husk
• poultry manure