mulhidin mulhidin, Ahmad Tawfiequrrahman Yuliansyah, Agus Prasetya


Hydrothermal treatment is one of the thermochemical methods to convert complex organic compounds, such as organic waste and biomass, into upgraded solid, bio-oil, and other dissolved chemicals by utilizing the properties of water at near critical condition. Such method is very potential since the process is environmentally friendly and the products have more added values. In this research, conversion of mahogany sawdust (Swietenia macrophylla) using hydrothermal treatment method was studied. The experiments were conducted in a batch autoclave with temperature range of 200-300oC and initial pressure of 1 MPa. At targeted temperature, the process was hold for 30 minutes. In addition, biomass-water ratio (B/W ratio) for experiments was varied at 1:20, 2:20 and 3:20. The liquid products, which were characterized by Gas chromatography-Mass spectrometry (GC/MS) instrument, showed the presence of furfural and several organic acids, but no flavonoid compounds. Thus, coloring potential test of hydrothermal liquid was unsuccessful; there were not any color attached on the cloth specimen. On the other hand, proximate and ultimate test results indicated that solid products had high heating value (HHV) of 4625.34-4876.25 cal/g which were comparable to that of sub-bituminous coal.


Hydrothermal treatment; Mahogany sawdust; Coloring test; High heating value

Full Text:



BPS. 2015. Produksi Kayu Hutan Menurut Jenis Produksi (m3), 2000, 2002-2013, https://bps.go.id/linkTabelStatis/view/id/1718 accessed on April 16, 2017.

Harianja, A. 2008. Tumbuhan Obat dan Khasiatnya. Cetakan Kelima. Penerbit Penebar Swadaya. Jakarta.

IEO. 2009. International Energy Outlook. Liquid Fuels.

Jin, F., Wang, Y., ZengXu., Shen Z., Yao, G. 2014. Water Under High Temperature and Pressure Conditions and Its Applications to Develop Green Technologies for Biomass Conversion, In: Jin F. (eds) Application of Hydrothermal Reactions to Biomass Conversion. Green Chemistry and Sustainable Technology. Springer, Berlin, Heidelberg

Prasetya A., Yuliansyah A.T., Purnomo C.W., Cahyono R.B. 2016. Up grading Limbah Biomassa menjadi Bahan Bakar Padat dengan Hydrothermal Treatment. Universitas Gadjah Mada. Yogyakarta.

Sasaki, M., Adschiri, T., Arai, K. 2003. Fractionation of Sugarcane Bagasse by Hydrothermal Treatment. Bioresource Technology. 86: 301–304.

Tekin K., Karagöz S., Bektaş S. 2014. A Review of Hydrothermal Biomass Processing,

Renewable and Sustainable Energy Reviews. 40: 673–687.

Toor, S. S., Rosendahl, L., Rudolf, A. 2011. Hydrothermal Liquefaction of Biomass: A Review of Subcritical Water Technologies. Journal Energy. 36: 2328-2342.

Yuliansyah A.T., Hirajima T., Kumagai S., Sasaki K. 2010. Production of Solid Biofuel from Agricultural Wastes of The Palm Oil Industry by Hydrothermal Treatment. Waste Biomass Valor. 1: 395–405.


  • There are currently no refbacks.