Performance of Halloysite-Mg/Al LDH Materials for Aqueous As(V) and Cr(VI) Removal.

ABSTRACT: This research focused on the investigation of layered double hydroxide (LDH)/halloysite materials' adsorption efficiency and mechanisms in reactions with aqueous As(V) and Cr(VI) in a broad pH range. The materials consisting of Mg/Al LDH and halloysite were synthesized using both direct precipitation and physical mixing methods. The XRD, FTIR, DTA, SEM and XPS methods were used to evaluate the quality of the obtained materials and get insight into removal mechanisms. The XRD, FTIR and DTA confirmed LDH formation and showed the dominating presence of intercalated carbonates in the LDH structure. The SEM of the materials revealed characteristic agglomerates of layered LDH particles deposited on halloysite tubular forms. The raw LDH phases showed high removal efficiency of both As(V) and Cr (

SUBMITTER: Matusik J 

PROVIDER: S-EPMC6862184 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature