Adsorption of Cu (II) onto Bamboo Supported Manganese (BS-Mn) Nanocomposite: Effect of Operational Parameters, Kinetic, Isotherms, and Thermodynamic Studies
Bamboo supported manganese (BS-Mn) nanocomposite was prepared in a single pot system via bottom-up approach using a chemical reduction method. Langmuir surface area, BET surface area, and Single pore surface area were 349.70 m2/g, 218.90 m2/g, and 213.50 m2/g, respectively. The pore size (24.34 Ȧ);...
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Veröffentlicht in: | Journal of applied science & environmental management 2017-01, Vol.20 (2) |
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Sprache: | eng |
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Zusammenfassung: | Bamboo supported manganese (BS-Mn) nanocomposite was prepared in a
single pot system via bottom-up approach using a chemical reduction
method. Langmuir surface area, BET surface area, and Single pore
surface area were 349.70 m2/g, 218.90 m2/g, and 213.50 m2/g,
respectively. The pore size (24.34 Ȧ); pore volume (0.489 cm3);
point of zero charge (5.8); bulk density (0.0035 gcm-3); specific
surface area (33.00 m2/g) by Saer's method and functional group
of BS-Mn nanocomposite determined using Fourier Transform Infrared
Spectrophotometer (FTIR). Various operational parameters affecting
adsorption of Cu(II) such as adsorbent dose (100 mg), pH (6), contact
time (90 min), initial Cu(II) ions concentration (100 mg/L) and
temperature (298 K) were determined in a batch technique. Kinetic data
were best fitted to pseudo second-order model validated by sum of
square error (SSE) and Chi-square test (χ2). Equilibrium data were
better described by Langmuir isotherm model with the monolayer
adsorption capacity surpassing those previously reported for Cu(II)
uptake. The thermodynamic parameters, ΔGo (- 31.773 kJ mol-1),
ΔSo (107.30 J) and ΔHo (+202 kJmol-1) revealed that the
adsorption process was feasible, spontaneous and endothermic in nature.
The study showed that BS-Mn is a promising nanocomposite which
could be utilized for industrial wastewater remediation. |
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ISSN: | 1119-8362 |