Adsorption of Cr(VI) and Se(IV) from their aqueous solutions onto Zr4+-substituted ZnAl/MgAl-layered double hydroxides: effect of Zr4+ substitution in the layer

Development, modification, and application of low-cost and available biochar derived from corn straw for the removal of vanadium(v) from aqueous solution and real contaminated groundwater

“…ZnCl 2 impregnation could signicantly increase the generation of mesopores and micropores, the specic surface area, and the yields of biochar. [23][24][25][26] Recently, transitional Zr(IV)-binding chitosan complexes, orange waste gel and AC have been applied for the removal of phosphate, 27,28 As(V) and As(III), 29,30 Cr(VI) and vanadium(V), 13,31,32 because hydrous Zr(IV) can form tetrahedral geometries with abundant water molecules and hydroxyl ions, which could give rise to adsorption sites and high adsorption affinity toward oxyanions. Moreover, Zr(IV) in its hydrated form can resist the adsorption of alkalis, acids, reductants and oxidants, which can improve the selectivity of the absorbents.…”

Adsorption of Cr(III) from Aqueous Solution using Borax Sludge

“…[10][11][12][13][14][15][16][17] In many adsorption processes, layered double hydroxide, Turkish brown coals, ozonised activated carbon, acrylate-based magnetic beads and bentonite clay have been studied as chemical adsorbents. [18][19][20][21][22][23] In addition to these studies, some industrial wastes such as fly ash and saw dust, and also Indian Rosewood timber have been preferred because of their economical usage. 24,25 The evaluation of borax sludge is highly important, due to the emerging amount of boron waste in Turkey, which is 600000 tons per year.…”

Catalytic Constructive Deoxygenation of Lignin-Derived phenols: New C–C Bond Formation Processes from Imidazole-Sulfonates and Ether Cleavage Reactions

“…Among various CO 2 mesoporous adsorbents, LDH-base materials have been identified as suitable materials for CO 2 sorption at moderate temperatures (T ≤ 400 °C) [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] due to their properties such as large surface area, high anion exchange capacity (2-3 meq/g) and good thermal stability [37][38][39][40]. The LDH materials themselves do not possess any basic sites.…”