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Poly(Acrylic acid)/SiO 2 composite nanofiber functionalized with mercapto groups for the removal of humic acid from aqueous solution
Zulfikar M.A.a, Maulina D.a, Nasir M.b, Alni A.a, Zunita M.a, Zen I.S.c, Setiyanto H.a, Rusli H.a
a Analytical Chemistry Research Group, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Clean Technology Division, Indonesian Institute of Sciences, Bandung, 40132, Indonesia
c Department of Urban and Regional Planning, Universiti Teknologi Malaysia, Johor Bahru, 81310, Malaysia
[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 Desalination Publications. All rights reserved. Functionalized poly(acrylic acid)/SiO 2 (PAA/SiO 2 ) composite nanofiber with mercapto groups have been prepared through an electro spinning process. The characterization of the composite nanofiber was performed using FTIR, optical microscopy, SEM, TEM and Brunauer-Emmett-Teller (BET) analysis. Finally, the prepared nanofiber was used for the adsorption of humic acid (HA) from an aqueous solution using a batch adsorption technique. The effects of pH, contact time, initial concentration, dosages and temperature on adsorption capacities were studied in a batch mode. The experimental data was well described by the Langmuir isotherm model with an adsorption capacity of 427.62 mg/g. It was found that the kinetic data follow the pseudo-second-order models. The data of thermodynamic parameters indicated that the HA adsorption process was non-spontaneous and endothermic under the experimental conditions with the values of Gibbs free energy (ΔG°) being in the range of 3.235 to 5.914 kJ mol –1 ; as well as the values of enthalpy (ΔH°) and entropy (ΔS°) that were found to be 22.41 kJ mol –1 and 55.59 J mol –1 . K –1 , respectively. The functionalized composite nanofiber exhibited as a high potential adsorbent for the adsorption of HA from an aqueous solution.[/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,Composite nanofiber,Humic acid,Mercapto group[/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]The author is very grateful to the Institut Teknologi Bandung for the financial support of this research study through the ITB Research Program 2018.[/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/10.5004/dwt.2019.23325[/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]