Sulfonated modification of cotton linter and its application as adsorbent for high-efficiency removal of lead(II) in effluent

Adsorptive separation of Pb(II) and Cu(II) from aqueous solutions using as-prepared carboxymethylated waste Lyocell fiber

“…1a). Similar adsorption trends were observed in several other studies involving heavy metal ions (Saleh and Gupta 2012a;Saleh 2015;Dong et al 2013;Gupta et al 2013;Liu et al 2008). This suggests that at the initial lower concentrations there were sufficient binding sites to accommodate greater portions of the metal ions, but these sites got saturated with increase in metal concentrations so that no more metal ions could be attached at the higher concentrations.…”

“…In this regard, the performance of the prepared carboxymethylated Lyocell adsorbent was compared with some reported ones (Table 4). In the studies of Dong et al (2013) using sulfonated cotton linters, only a maximum of 37.45 mg/g Pb(II) uptake was recorded even though the adsorption experiment was performed at a high pH value (pH 6). Furthermore, the performance of porous lignin xanthate resin showed relatively low performance in terms of Pb(II) uptake capacity and kinetics (Li et al 2015).…”

“…They are among the list of metallic elements that are considered toxic to the environment and humans, especially on long-term exposure. They are classified as priority hazardous substances by various agencies including the Agency for Toxic Substances and Disease Registry (http://www.atsdr.cdc.gov/ SPL/; Dong et al 2013;Ge et al 2014). They are found in the effluents from construction and mining industries, metal processing industries, lead batteries, pigments, printing products, and automobiles (Bailey et al 1999;Ge et al 2014;Liu et al 2008).…”

Preparing cationic cotton linter cellulose with high substitution degree by ultrasonic treatment

“…3). The typical absorptions of cellulose included broad strong absorption peak of O H stretching vibration (between 3000 and 3700 cm −1 ), C H stretching vibration (between 2700 and 3000 cm −1 ), the C H rocking vibration at 1386 cm −1 and C O stretching vibration for cellulose ring at 1120 cm −1 (Dong, Zhang, Pang, Liu, & Zhang, 2013).…”

Removal of Ag(I) and Zn(II) ions from single and binary solution using sulfonated form of gum arabic-powdered mushroom composite hollow semispheres: Equilibrium, kinetic, thermodynamic and ex-situ studies

“…The hollow microspheres were recovered using de-ionized water and washed three to four times. The sulfonation of these hollow spheres was carried out using sulfur trioxide pyridine complex following the method of Dong et al (2013) and sulfonated form of gummushroom complex (SfGM) was prepared.…”