Preparation and Characterization of Functionalized Cellulose Nanomaterials (CNMs) for Pb(II) Ions Removal from Wastewater

Abstract

Due to their remarkable properties, cellulose nanomaterials are emerging materials for wastewater (WW) treatment. In this study, both pristine cellulose nanomaterial (CNM) and sodium periodate modified cellulose nanomaterial (NaIO4-CNM) were prepared from the stem of the Erythrina brucei plant for the removal of Pb(II) ions from WW. As-prepared CNMs were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), scanning electron microscope (SEM), and thermogravimetric analysis with differential thermogravimetry (TGA-DTG) analysis. The as-prepared and characterized CNMs were tested for the removal of Pb(II) ions from secondary run-off wastewater (SERWW). Langmuir and Freundlich adsorption isotherms were certainly fixed to a maximum Pb(II) ions uptake capability (Qmax) of 91.74 and 384.62 mg g−1 by CNM and NaIO4-CNM adsorbents, respectively. The pseudo-second-order (PSO) kinetics model was well fitted to the uptake process. Results revealed that the percentage removal (%R) of Pb(II) ions was decreased by the presence of nitrogen and organic matter, but not affected by the presence of phosphorous in SERWW. Due to its high efficiency, NaIO4-CNM was selected for the regeneration study. The regeneration study was conducted after desorption of Pb(II) ions from the adsorbent by the addition of HCl, and the regenerated sorbent was reused as an adsorbent for at least 13 successive cycles. The results indicated excellent recycling capabilities, and the adsorbent was used as adsorbing material for the removal of Pb(II) ions from SERWW after 13 successive cycles without significant efficient loss.

Extraction and modification of cellulose from Artocarpus heterophyllus for biosorption of lead ion from aqueous solution as cost effective biosorbent

“…In this study the effect of different parameter data was used to check the adsorption mechanism of Pb (II) onto modified cellulose from Artocarpus heterophyllus as shown on Figure 2. The result obtained from experimental data is in line with the finding of Kurniawan et al [29] , Jamshaid et al [30] and Tsade et al [31] .…”

Cellulose Nanocrystals (CNCs) and Cellulose Nanofibers (CNFs) as Adsorbents of Heavy Metal Ions

“…Te best adsorption kinetic of CNCS-g-P (AA/AM) describes Pb(II) ions removal ftted to pseudo-second order [222,245]. Tsade et al [230] synthesized pristine cellulose nanomaterial and sodium periodate modifed cellulose nanomaterial (NaIO 4 -CNM) from the Erythrina brucei plant. Based on the value of R 2 , the isotherm models of Langmuir and Freundlich were the best ftting for Pb(II) adsorption.…”

Cellulose Based Adsorbent for Cationic Methylene Blue Dye Removal

“…Because of this, eliminating cationic MB dye from wastewater before its harm has become very essential aspect. For an increased period of time, several methods are situated for the elimination of toxic pollutants including adsorption, coagulation, precipitation, ltration, solvent extraction, reverse osmosis, and ion exchange [18][19][20][21][22][23][24][25][26].…”