Sorption of 17β-estradiol from aqueous solutions on to bone char derived from waste cattle bones: Kinetics and isotherms

Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal

“…When compared with other adsorbents (i.e. char and carbon nanotubes) reported in literature, 45,47 the hydrochar-FMBO exhibited great potential for adsorptive removal of E2. The desirable adsorption capacity of hydrochar-FMBO could be ascribed to the FMBO loading which increased the BET surface area and the mount of macro-/mesopores resulting in increasing the adsorption site.…”

“…However, none of the L constants approached zero (Table S1 †), suggesting that the E2 adsorption on hydrochar-FMBO was rather a complex process, where intraparticle diffusion might not exclusively govern E2 adsorption. 45…”

Detachment of Cu (II) and Co (II) ions from synthetic wastewater via adsorption on Lates niloticus fish bones using LIBS and XRF

“…This model assumes that a chemisorption mechanism is involved in the adsorption process and the rate of the site is proportional to the square of the number of unoccupied sites. The adsorption kinetics of Cu (II) and Co (II) ions onto fish bones, suggests that the rate-limiting step could be chemical sorption or ion exchange [37] , [38] .…”

Efficient removal of 17β-estradiol using hybrid clay materials: Batch and column studies

“…Further, a fair applicability of the PSO or FL-PSO models pointed that the E2 species were bound onto the surface of these hybrid materials with relatively a strong forces. Previously, Patel et al [11] reported that the adsorption of E2 on bone char obeyed the pseudo second-order kinetic model and they assumed that chemisorption mechanism was involved in the adsorption process. Similar result was obtained in the sorptive removal of bisphenol A by some of the hybrid materials precursor to the natural sericite [22].…”

“…Sorptive removal using variety of newer materials is one of possible options for decontaminating the aquatic environment contaminated with steroidal estrogens. In fact, a number of sorbent materials have been applied for eliminating E2 including surface soils [6], granular activated carbon (GAC), chitin, chitosan, ion exchange resin, carbonaceous adsorbent prepared from industrial waste [9], natural sediments [10], bone char [11], powdered activated carbons [12], single-walled carbon nanotubes [13], mul-ti-walled carbon nanotubes [14] polyamide thin-film composite nanofiltration (NF) membranes [15], and molecularly imprinted polymer [16]. However, these sorbents suffer the problem of either low sorption capacities or seemingly high-cost of materials.…”