title: Removal of elevated level of chromium in groundwater by the fabricated PANI/Fe3O4nanocomposites.
abstract: In this work, we report the reduction of chromium concentration in the polluted groundwater samples from Madurai Kamaraj University area, India, where the dissolved salts in groundwater are reported as serious health hazards for its inhabitants. The water samples have intolerable amounts of total dissolved solids (TDS) and chromium is a prominent pollutant among them. Chromium reduction was achieved by treating the polluted groundwater with PANI/Fe3O4nanocomposites synthesized by in situ polymerization method. Further experimentation showed that the nanocomposites exhibit better chromium removal characteristics upon increasing the aniline concentration during the synthesis. We were able to reduce chromium concentration in the samples from 0.295 mg L-1to a tolerable amount of 0.144 mg L-1. This work is expected to open doors for chromium-free groundwater in various regions of India, when improved to an industrial scale.
authors.affiliation: School of Physics, Madurai Kamaraj University, Madurai, 625021, India.
authors.forename: Aruna
authors.initials: A
authors.lastname: Ramachandran
authors.affiliation: School of Physics, Madurai Kamaraj University, Madurai, 625021, India.
authors.forename: T
authors.initials: T
authors.lastname: Prasankumar
authors.affiliation: School of Physics, Madurai Kamaraj University, Madurai, 625021, India.
authors.forename: S
authors.initials: S
authors.lastname: Sivaprakash
authors.affiliation: School of Physics, Madurai Kamaraj University, Madurai, 625021, India.
authors.forename: Biny R
authors.initials: BR
authors.lastname: Wiston
authors.affiliation: Department of Materials Science and NanoEngineering, Rice University, 6100 Main, Houston, TX, 77005, USA.
authors.forename: Santhosh
authors.initials: S
authors.lastname: Biradar
authors.affiliation: School of Physics, Madurai Kamaraj University, Madurai, 625021, India. sujamystica@yahoo.com.|Department of Materials Science and NanoEngineering, Rice University, 6100 Main, Houston, TX, 77005, USA. sujamystica@yahoo.com.
authors.forename: Sujin
authors.initials: S
authors.lastname: Jose
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D002857:Chromium / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D060587:Groundwater / Q000737:chemistry*; D007194:India; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification
chemical_list: D000814:Aniline Compounds; D058185:Magnetite Nanoparticles; D014874:Water Pollutants, Chemical; C416807:polyaniline; D002857:Chromium
keywords: Cr removal; Groundwater; In situ polymerization; PANI/Fe3O4; Polymer nanocomposites