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Adsorption of natural organic matter (NOM) in peat water by local indonesia tropical clay soils
Notodarmojo S.a, Mahmudb, Larasati A.a
a Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Indonesia
b Faculty of Civil Engineering, University of Lambung Mangkurat, 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]© Int. J. of GEOMATE.A series of experiment on the adsorption of natural organic matter (NOM) originated from peat water in Central Kalimantan, Indonesia by local peat clay soils had been carried out. A selected local peat clay soil (LPC) and activated local peat clay soil (ALPC) had been used as adsorbents. The activation of the local peat clay soil was carried out by immersing it in 1 M HCl solution at 900°C. The effects of pH on the adsorption capacities were investigated. It has been found that at lower pHs (3-5) the adsorption capacities increased significantly. A rotary shaker was set at 180 rpm as an agitator in performing the kinetically behaviour and adsorption isotherm of NOM onto the LPC and the ALPC. It was found that the equilibration time for the LPC and the ALPC were 180 and 150 minutes, respectively. The kinetics equation model that most fitted to the adsorption experimental data for the both adsorbents was pseudo-second order kinetics model (r2 > 0.99). The Dubinin-Radushkevich depicted the data more accurately to describe the NOM-LPC and NOM-LAPC adsorption isotherms (r2 > 0.99). Further analysis on the peat water NOM characteristics and local clay (LPC and ALPC) suggested that physical adsorption, mainly electrostatic interactions enhanced adsorption process and hydrophobic or solute driven adsorption dominated in the early stage of the process, followed by a chemical adsorption process.[/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]Adsorption,Dubinin-radushkevic isotherm,Local clay soils,NOM[/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][/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/10.21660/2017.38.30379[/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]