Simultaneous removal of arsenate and arsenite by a nanostructured zirconium–manganese binary hydrous oxide: Behavior and mechanism

Characteristics and mechanisms of arsenate adsorption onto manganese oxide‐doped aluminum oxide

“…Meanwhile, the peak of S2p disappeared in Figure 7b, which indicates the occurrence of ligand exchange between sulfate and As(V). Zhang et al [9] and Ma et al [51] obtained similar results, wherein the introduced sulfate during the adsorbent preparation process could take part in the reactions with arsenic at the solid-liquid interface. In Figure 7c, the O1s spectrum for fresh MODAO could be divided into three peaks at 529.8, 531.3, and 532.0 eV, which corresponded to the lattice oxygen within the metal oxides (Me@O), the hydroxyl oxygen within the hydroxyl groups (MeAOH), and the sulfur oxygen within the sulfate, respectively [48][49][50].…”

“…Zhang et al [6,7] used Fe-manganese (Mn) binary oxide (FMBO) and Fe-copper (Cu) binary oxide to remove As(V), and they found that the two Fe-based bimetal adsorbents had greater As(V) adsorption capacities than that of pure Fe hydroxide (FeOOH). In addition, Zhang et al [9] synthesized Zr-Mn binary oxide for As(V) removal, which exhibited a higher As(V) uptake than both zirconium dioxide (ZrO 2 ) and manganese dioxide (MnO 2 ) [10,11]. In addition, Zhang et al [9] synthesized Zr-Mn binary oxide for As(V) removal, which exhibited a higher As(V) uptake than both zirconium dioxide (ZrO 2 ) and manganese dioxide (MnO 2 ) [10,11].…”

“…In addition, Zhang et al [9] synthesized Zr-Mn binary oxide for As(V) removal, which exhibited a higher As(V) uptake than both zirconium dioxide (ZrO 2 ) and manganese dioxide (MnO 2 ) [10,11]. Thus, bimetal oxides not only have the advantages of single oxides but also have significantly improved adsorption capacity because of their synergistic effects [9]. Thus, bimetal oxides not only have the advantages of single oxides but also have significantly improved adsorption capacity because of their synergistic effects [9].…”

Arsenic adsorption by iron–aluminium hydroxide coated onto macroporous supports: Insights from X-ray absorption spectroscopy and comparison with granular ferric hydroxides

“…Since As(III) is more toxic and usually harder to remove, the well water was spiked with As(III) ions [43].…”

Crosslinked polyDADMAC gels as highly selective and reusable arsenate binding materials

“…Arsenic is a highly toxic element [1][2][3][4][5][6][7][8][9][10][11][12][13] that may cause cancer malignancies, vascular diseases, and non-malignant skin tumors [1]. The acceptable limit for arsenic in drinking water is 10 lg/L according to the World Health Organization (WHO) [6][7][8][9][10][11]. The US Environmental Protection Agency (EPA) set the arsenic standard for drinking water in the US at 10 lg/L in 2001; the previous standard was 50 lg/L [2].…”