Removal of nitrobenzene from aqueous solution by adsorption on nanocrystalline hydroxyapatite

Poorly crystalline hydroxyapatite: A novel adsorbent for enhanced fulvic acid removal from aqueous solution

“…In other words, the decrease in adsorption capacity with the increase in the adsorbent dosage was mainly attributed to the unsaturation of the adsorption sites through the adsorption process. Similar findings have been observed for HA removal by surfactant-modified chitosan/zeolite composite [48] and surfactant modified zeolite [49], as well as for nitrobenzene [29] and phenol [41] removal by HAP nanoparticles.…”

“…The environmental risk of nanosized HAP itself can be neglected because it has displayed good cytocompatibility [43]. Moreover, nanosized HAP has also been used for the adsorption of oxalic acid, fluoride, and nitrobenzene in our previous work [29,37,40]. However, little knowledge is available about the adsorption behaviors and influencing factors of FA onto nanosized HAP, and information concerning the interaction mechanisms of FA with poorly crystalline HAP is even more deficient.…”

“…Recently, nanosized materials represent a promising application in a variety of fields due to their high surface area, reactivity and their ability to become dispersed in aqueous solution [29]. Nanosized materials usually display higher surface area and adsorption ability than the traditional materials.…”

Novel sandwich structure adsorptive membranes for removal of 4-nitrotoluene from water

“…This is attributed to π−π electron donor−acceptor (EDA) interactions between the π-electron-deficient phenyls of 4-NT, the π-electron rich matrix of PS-PDVB, and the porous structure of PS-PDVB [29].This absorption capacity value is much higher than that of montmorillonites (8.5 mg g -1 ) [30] and hydroxyapatite (5.661 mg g -1 ) [31], and comparable to that of polysilsesquioxanes (24.81 mg g -1 ) [32], and graphene oxide (25.0 mg g -1 ) [33].…”

A designed magnetic CoFe2O4–hydroxyapatite core–shell nanocomposite for Zn(II) removal with high efficiency

“…Up to date, nano-size HAp shows excellent potential in sewage treatment because of their high capacity for removing divalent heavy metal ions, good dispersibility and simple synthesis method [23][24][25].…”