Efficient Removal of Cr(VI) from Aqueous Solution by Fe-Mn Oxide-Modified Biochar

Activated Carbon/Bentonite/Fe3O4 as Novel Nanobiocomposite for High Removal of Cr(VI) Ions

“…In other words, there are many empty pores on the nanocomposite surface initially, and the chromium ions can place themselves onto them. At t > 80 min, the change in uptake efficiency was negligible, which could be due to the saturation of the nanocomposite pores 36. Therefore, 80 min was considered as the optimum time.…”

A novel sludge-based biochar composite adsorbent CS/SBC-H3PO4 for efficient Cr(vi) removal from aqueous solution

“…The comparison of Cr(VI) removal capacity and corresponding conditions of CS/SBC-H 3 PO 4 prepared in this study and other BC-based adsorbents reported in the literature 14,[43][44][45][46][47][48][49][50] is shown in Table 4. Compared with other BC-based adsorbents, CS/SBC-H 3 PO 4 has a higher adsorption capacity at lower adsorbent dosage and higher Cr(VI) concentration.…”

Removal of Cr(vi) in wastewater by Fe–Mn oxide loaded sludge biochar

“…After the introduction of Fe–Mn oxides, the amount of active site of biochar increased, and its removal performance for contaminants was greatly improved. 14 Additionally, the multi-metal materials have synergistic adsorption and reduction effects, which can improve the effect of Cr( vi ) treatment. 13 Applying composites to treat Cr( vi )-containing wastewater is expected to achieve the dual purpose of waste biomass resource utilization and Cr( vi ) pollutant control.…”