Enhanced removal of As (V) from aqueous solution using modified hydrous ferric oxide nanoparticles.

ABSTRACT: Hydrous ferric oxide (HFO) is most effective with high treatment capacity on arsenate [As(V)] sorption although its transformation and aggregation nature need further improvement. Here, HFO nanoparticles with carboxymethyl cellulose (CMC) or starch as modifier was synthesized for the purpose of stability improvement and As(V) removal from water. Comparatively, CMC might be the optimum stabilizer for HFO nanoparticles because of more effective physical and chemical stability. The large-pore structure, high surface specific area, and the non-aggregated nature of CMC-HFO lead to increased adsorption sites, and thus high adsorption capacities of As(V) without pre-treatment (355 mg·g^-1), which is much greater than those reported in previous studies. Second-order equation and dual-mod

SUBMITTER: Huo L 

PROVIDER: S-EPMC5241682 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature