Bisphenol A oxidative removal by ferrate (Fe(VI)) under a weak acidic condition

Ferrate(VI) oxidation of tetrabromobisphenol A in comparison with bisphenol A

“…However, the coexisting constituents present in source water are also responsible for a rapid Fe(VI) consumption, which determine its ability to remove organic micropollutants. For example, Zhang et al (2012) have shown that humic acid and SiO 2À 3 notably reduced the bisphenol A (BPA) removal, tert-butanol slightly decreased the BPA removal, and the existence of HCO À 3 slightly enhanced the BPA removal by Fe(VI). Yang and Ying (2013) have shown that humic acid, Mn 2þ and NaCl significantly decreased the removal efficiency of sunscreen agent benzophenone-3 by Fe(VI), while Cu 2þ enhanced the removal.…”

Oxidation of benzophenone-3 during water treatment with ferrate(VI)

“…Lee and von Gunten (2010) have shown that ammonia, nitrite, and bromide have little effects on the 17a-ethinylestradiol removal during Fe(VI) treatment of a secondary wastewater effluent at pH 8. Zhang et al (2012) have shown that humic acid and SiO 2À 3 notably inhibited the bisphenol A removal, tert-butanol slightly decreased the bisphenol A removal, and the existence of HCO À 3 slightly enhanced the bisphenol A removal by Fe(VI). Thus, the coexisting constituents in water could be an important factor in the removal of micropollutants by Fe(VI) treatment.…”

Synthesis of Acid Hydrolysis Lignin-g-Poly-(Acrylic Acid) Hydrogel Superabsorbent Composites and Adsorption of Lead Ions

“…Many isotherm models have been proposed to explain the adsorption equilibrium, and the most commonly used isotherm models for liquid-solid adsorption are Langmuir and Freundlich (Zhang et al 2012) models. The equilibrium data obtained were tested with respect to the two isotherm models, Langmuir equation：Ce/qe = Ce/qm + 1/bqm (5) where qm (mg/g) represents the maximal adsorption capacity to form a monolayer in the system; qe (mg/g) represents the amount of solute adsorbed per unit weight of the adsorbent at equilibrium; Ce (mg/L) is the equilibrium solute concentration in solution, and b (L/mg) is the Langmuir constant.…”