Adsorption of Cr (VI) ion from Aqueous Solution Using Unmodified Desert Date Peels (Balanites aegyptiaca) Composite with MWCNTs: Isotherm and Kinetic Studies
Loading...
Date
2022-12-26
Journal Title
Journal ISSN
Volume Title
Publisher
Arid Zone Journal of Basic and Applied Research
Abstract
Continuous Changing of human lifestyles has consistently added different
notorious anthropogenic pollutants into aquatic matrices. Exterminating these
toxic pollutants is feasible using adsorption studies instead of the traditional
water purification methods. The purpose of this study was to investigate the
adsorption of Cr (VI) ion from aqueous using Unmodified Desert Date (UDD)
Peels as a low-cost adsorbent and composite with multi-walled carbon
nanotubes (UDDC). A batch adsorption experiment was conducted to evaluate
the maximum quantity adsorbed of Cr (VI) ions from an aqueous medium under
various conditions. The Fourier-Transform Infrared Spectroscopy (FTIR)
revealed 3448.84 cm-1 and 3441.12 cm-1 which corresponds to O-H stretching
vibration modes for UDD and UDDC and 1620.26 cm-1
relates to C=O
stretching vibrations for both UDD and UDDC respectively. The maximum
adsorption capacity (qe
) is found to be 114.11 and 741.14 (mg/g) for UDD and
UDDC respectively. The results showed that UDDC has a large adsorption
capacity due to its higher surface area. The adsorption data were fitted well into
Langmuir with correlation coefficient (R2
) values close to unity 0.9076 and
0.9069 for UDD and UDDC respectively. Kinetic studies showed a good
correlation coefficient pseudo-second-order kinetic model fitted very well into
UDD and UDDC with (R2
) values 0.9173 and 0.9943 respectively. The results
indicated that UDDC could be used as a potential adsorbent for the adsorption
of Cr (VI) ions from an aqueous solution