Abstract
Biogas is one alternative to replace the irreplaceable energy source that has begun to diminish its existence. The raw materials for biogas manufacture are renewable biomass, usually using plantation waste, agriculture, and livestock. Using biogas can also reduce environmental pollution. One of the agricultural waste that has great potential to become the raw material of biogas is teak sawdust. Wood processing industry in Indonesia quite a lot, but wood has a high lignosesluosa content, so it needs the right method to process it. With the delignification of lignin levels on teak sawdust will decrease. Wood sawdust is soaked using NaOH for 1, 2, 3, and 4 days with 4% w / v concentration. The lowest lignin and hemicellulose content was 25.79% and 87.9% in pretreatment for 4 days, while the highest cellulose level was 57, 34%. The accumulated volume of biogas at 1 day pretreatment, ie 709 ml / g TS. Gcms shows the enlarged peak area of methanamine, N-methyl from before pretreatment. The fastest biogas formation (λ) in 4 days pretreatment, 1.60403 days and the largest constant A and U variables at 1 day were 914.5903 ml / g TS and 34.59765 ml / g TS.
Highlights
Raw materials with lignocellulosic content are known as potential raw materials to produce environmentally friendly alternative fuels
Utilization of biogas as an alternative energy is possible to be applied in Indonesia because it has a potential of 49,807.43 MW derived from the activities of forest processing industry, agriculture, plantation, and sewage waste[3]
It can be seen that the longer immersion hemicellulose levels decreased
Summary
Raw materials with lignocellulosic content are known as potential raw materials to produce environmentally friendly alternative fuels. Lignocellulose consists of three main components, namely cellulose, hemerusulose, and lignin. They form a complex chemical bond into the base material of the plant cell wall [20]. Cellulose is a major component of the plant cell wall wall that is glucose polymer composed of β-1,4-glucose units connected with β-1,4 Dllycoside bond. High content of Lignocellulose in biomass causes biomass is difficult to be processed into biogas, so the need for pretreatement. The OH-ions of NaOH will break the bonds from the ligmin base structure, while the Na+ will bind to lignin to form sodium phenolate. The sample is filtered to remove the dissolved lignin in the solution and the sample is washed with water to clean the solution still attached to the sample [27]
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