Nanoscale zinc oxide ( ZnO NPs )–alginate– PEG –activated carbon nanocomposite for efficient Cr ( VI ) removal from electroplating wastewater: adsorption isotherms and eco‐toxicity evaluation

Abstract BACKGROUND Wastewater treatment utilizing nanotechnology principles has gained more attention recently due to the high removal efficacy of toxic pollutants with high biocompatibility and eco‐friendliness. This research utilizes an in situ green synthesis method to synthesize a nanoscale zinc oxide–sodium alginate–poly(ethylene glycol)–activated carbon nanocomposite coated with Clitoria ternatea extract (CLT‐PEG‐AC‐ZnO) for the effective remediation of hexavalent chromium (Cr(VI)) from electroplating industry effluent. RESULTS Structural characterization via UV–visible spectroscopy and X‐ray diffraction (XRD) validated the synthesis of ZnO nanoparticles at 340 nm, while scanning electron microscopy and…