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Potassium recovery from tropical biomass ash
Samadhi T.W.a, Wulandari W.a, Amalia R.A.a, Khairunnisah R.a
a Department of Chemical Engineering, Institut Teknologi Bandung, Bandung, 40132, 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]© 2019 Author(s). Biomass is a potential alternative fuel in Indonesia and other tropical countries. Combustion of biomass produces ash that may contain various beneficial compounds, including potassium. Potassium recovered from the biomass ash can be used as the raw material for producing fertilizer solution, thus reducing Indonesia’s dependence on fertilizer import. This study aims to assess the feasibility of potassium recovery from the ashes of oil palm empty fruit bunch (OEFB), banana peel, and corncob. The biomass ash samples are prepared by the following steps: drying, fixed-bed carbonization, and ashing. Single-stage batch extractions are carried out at 80 °C for 4 hours using demineralized water. The ash to solvent mass ratios used is 1:4, 1:5, 1:6, and 1:8, respectively. Measured ash content on dry basis is 10.75% for banana peel, 2.60% for OEFB, and 1.67% for corncob. Banana peel and OEFB ash extracts contain potassium exceeding the national standard for fertilizer solution, which is set at 30,000ppm of equivalent K 2 O. The highest potassium yield with respect to total potassium content in the ash is obtained from corncob ash within the ash to solvent ratio of 1:8, with the potassium yield of 62.29%. By contrast, banana peel ash extraction at ash to solvent ratio of 1:4 results in the lowest potassium yield of 21.41%.[/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 was supported by P3MI (Program Penelitian, Pengabdian Masyarakat dan Inovasi) 2017 Research Grant provided by ITB.[/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/10.1063/1.5094981[/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]