Open AccessRemoval of Hexavalent Chromium using Iron Nanoparticles Prepared using Date Seed Extract
Author(s) -
Fatemah Habib,
Abdallah Shanableh,
Sourjya Bhattacharjee
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/835/1/012002
Subject(s) - chromium , hexavalent chromium , nanoparticle , environmental remediation , aqueous solution , nuclear chemistry , chemistry , contamination , materials science , metallurgy , nanotechnology , organic chemistry , ecology , biology
Removal of hexavalent chromium from contaminated water systems is critical due to their high toxicity to aquatic and human health. Iron based nanoparticles (FeNPs) have emerged as promising materials for chromium removal. However, greener alternatives to the chemical synthesis routes of FeNPs are highly desirable while retaining their remediation ability. In this study we evaluate the removal efficiency of chromium using iron nanoparticles synthesized using aqueous extracts of date tree seeds (ds-FeNPs). Characterization of ds-FeNPs reveal the presence of 20-100 nm spherical nanoparticles containing Fe, C, O and S elements. Batch experiments demonstrated that the removal efficiency increased with increase in nanoparticles dose for a fixed chromium concentration (from 18 to 98% at nanoparticles dose of 166 to 1000 mg/L), whereas an opposite trend was observed for varying chromium concentrations at fixed nanoparticles dose. Removal efficiency was also probed at different initial pH levels and results indicate complete removal of chromium in acidic pH (100% at pH 3) whereas basic pH hindered chromium removal.