Characterization and physicochemical aspects of novel cellulose-based layered double hydroxide nanocomposite for removal of antimony and fluoride from aqueous solution

Preparation and Adsorption Properties of Soybean Dreg/Hydrocalumite Composites

“…As shown in Figure , the spectrum peaks of BD at 3295 and 2914 cm –1 were assigned to the stretching vibration of −OH and C–H, respectively. The peaks at 1738, 1631, and 1534 cm –1 were related to the stretching vibration of CO and CC, respectively . The strong peak at 1037 cm –1 was attributed to the stretching vibration of C–O–C and C–O .…”

“…In addition, the cellulose diffraction peak was not observed in the XRD spectrum of 30%BD-LDH4, indicating that BD was wrapped by hydrocalumite flakes, which was consistent with the SEM characterization results (Figure 1). 27 The functional groups of BD, LDH4, and 30%BD-LDH4 were determined by Fourier transform infrared (FT-IR) spectroscopy. As shown in Figure 3, the spectrum peaks of BD at 3295 and 2914 cm −1 were assigned to the stretching vibration of −OH and C−H, respectively.…”

“…The soybean dreg could be used as a cheap adsorption material since it contains rich oxygen-containing functional groups and has a loose and porous structure. − However, the specific surface area of the soybean dreg is small; therefore, its adsorption performance needs to be further improved. According to the previous literature, the main methods to improve the adsorption properties of biomass adsorbents included modification, carbonization, and preparation of composites. − Recently, combined with the advantages of biomass organic adsorption materials and traditional inorganic adsorption materials, the organic/inorganic composite adsorbents had attracted much attention. − For example, Abu-Danso et al found that the maximum adsorption capacities of clay/cellulose composites for Pb (II) and Cd (II) reach 389.78 and 115.96 mg·g –1 , respectively . Mirjavadi et al reported that the magnetic zeolite/cellulose nanofibers showed high adsorption capacity for the removal rate of Zn 2+ .…”

Synthesis of nano-zirconium-iron oxide supported by activated carbon composite for the removal of Sb(v) in aqueous solution

“…Adsorption performance could be improved through metal-based materials or other improvements. Bessaies et al 6 used modified carbon-based materials to effectively remove antimony in aqueous solutions, with an adsorption capacity of 77.72 mg g −1 . Deng et al 7 prepared amino-functional, activated carbon that can simultaneously adsorb Cr( vi ) and Sb( v ) in aqueous solution.…”

Nanomaterials in Water Applications: Adsorbing Materials for Fluoride Removal

“…The present of adsorbing material: with the development of industry and society, high concentrations of, and complex wastewater containing fluoride need to be disposed. Hence, biomass, thallus, nano-metal oxide, graphene, metal organic frameworks, carbon nanotubes, polymers, layered double hydroxides, and perovskite are applied to improve the performances of removing fluoride [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. There are also other different adsorbing materials for fluoride removal.…”