Effective remediation of arsenate from contaminated water by zirconium modified pomegranate peel as an anion exchanger

Thermochemical study of Cr(VI) sequestration onto chemically modified Areca catechu and its recovery by desorptive precipitation method

“…The value of ΔG° was found to be negative for all temperatures, implying that Cr(VI) adsorption onto CBNW is spontaneous. Also, the negative value increased with the increase in temperature suggesting that the adsorption is endothermic [58] , [59] . The evaluated positive ΔH° value further suggested that the adsorption of Cr(VI) onto CBNW is endothermic.…”

Efficient biosorption of hexavalent chromium from water by modified arecanut leaf sheath

“…(1) and Eq. (2) , respectively ( Poudel et al., 2021 ). where C o is the initial concentration (mg/L), C e is the equilibrium time concentrations of Cr(VI) (mg/L), m is the adsorbent mass (g), and V is the volume of the solution (L)…”

Zirconium modified pomegranate peel for efficient removal of arsenite from water

“…The adsorbent (SPP@Zr) was synthesized by the method given by our previous work. The synthesis procedure has been described in detail elsewhere [9].…”

“…The inorganic form of arsenic is more toxic than the organic form. The inorganic form of arsenic in an aqueous medium is arsenite (As(III)) or arsenate (As(V)) [9][10][11]. Arsenic is exposed to groundwater through natural and anthropogenic activities such as volcanic emission, geochemical activity, rock, and soil weathering, combustion of fossil fuels, mining activities, agricultural chemicals, wood preservatives, industrial discharges, electroplating, pigments, dyestuffs, and paints [12][13][14].…”

“…Furthermore, because Zr is prevalent in the earth's crust, it might be readily accessible for environmental media rehabilitation. As a result, Zr was chosen for removal of As(III) using our previously proposed adsorbent, pomegranate peels [9]. Using common agro-waste, pomegranate peels, we examined a novel form of the adsorbent substitute to conventional synthetic ion exchangers for As(III) ion remediation.…”