Adsorption of phosphate on iron oxide doped halloysite nanotubes.

ABSTRACT: Excess phosphate in water is known to cause eutrophication, and its removal is imperative. Nanoclay minerals are widely used in environmental remediation due to their low-cost, adequate availability, environmental compatibility, and adsorption efficiency. However, the removal of anions with nanoclays is not very effective because of electrostatic repulsion from clay surfaces with a net negative charge. Among clay minerals, halloysite nanotubes (HNTs) possess a negatively charged exterior and a positively charged inner lumen. This provides an increased affinity for anion removal. In this study, HNTs are modified with nano-scale iron oxide (Fe₂O₃) to enhance the adsorption capacity of the nanosorbent. This modification allowed for effective distribution of these oxide s

SUBMITTER: Almasri DA 

PROVIDER: S-EPMC6397243 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature