Nanocomposite of iron-junk derived goethite and α-MnO2 nanorod for efficient sequestration of total arsenic from aqueous medium
摘要
In view of the demand for synthesizing newer and sustainable materials for efficient and single step sequestration of total arsenic from aqueous medium, a novel nanocomposite of waste iron junk derived goethite with uniform shaped α-MnO2 particles has been synthesized in the present work. The synchronization of goethite and α-MnO2 provides a single platform for addressing the issue. The performance of the material is investigated by systematic batch experimentation techniques. Alongside, interaction mechanism of arsenic species at solid-liquid interface was supported by mathematical modelling study and analytical instrumentation study. The material shows excellent affinity for both the arsenic species (As(III): 66.19 mg g− 1 and As(V): 121.20 mg g− 1) under circum-neutral pH range (0.2 g L− 1 of material is enough to remove > 80% of 0.25 mg L− 1 arsenic within 20 min). The study further shows a new direction of waste management by utilizing iron junk for sustainable remediation of groundwater contaminants.