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Multi-production of solid fuel and liquid fertilizer from organic waste by employing wet torrefaction process
Prawisudha P.a, Azka G.R.a, Triyono B.a,b, Pasek A.D.a
a Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesa 10 Bandung, Indonesia
b Politeknik Negeri Bandung (Polban), Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2018 Author(s).Preliminary survey showed that organic waste from the market is about 18.77%, or second largest in the total waste generation. Its management becomes a challenge, because it is not comprised only of organics but also mixed with small amount of plastics; therefore, conventional biological process will not achieve their maximum efficiency. Wet torrefaction is a thermal process in hot water medium, which will dissolve organic materials into water, effectively converting most solids into liquid product. Banana fruit stem and cabbage were chosen as the mixed organic waste representative, and treated in a 2.5 L reactor using saturated steam in the temperature range of 175 to 225 °C before being analyzed for their heating value in solid products as fuel precursors, and their nitrogen, phosphorus and potassium (NPK) contents in liquid products as liquid fertilizer precursors. It was found that for cabbage, the wet torrefaction process at 200 °C and 90 min resulted in 15.59 MJ/kg product heating value with NPK content of 3.43%. For banana fruit bunch stem, the wet torrefaction process at 225 °C and 30 min resulted in 17.64 MJ/kg product heating value with NPK content of 5.13%. It can be concluded that wet torrefaction process can simultaneously produce solid and liquid product as solid fuel and liquid fertilizer, respectively.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This study is supported by Insinas Riset Pratama Research Program 2017 from The Ministry of Research, Development and Higher Education of Indonesia. Parts of the analyses were supported by the Research Center of New and Renewable Energy LPPM Institut Teknologi Bandung, and Research Center for New and Renewable Energy and Conservation Energy, Ministry of Energy and Mineral Resources, Indonesia.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/1.5046629[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]