A two-sorbent system for fast uptake of arsenate from water: Batch and column studies

•Capture-and-storage sorption process is proposed for small water treatment systems.•Two sorbents work in tandem for rapid capturing of arsenate from water.•The first sorbent sorbs arsenate more rapidly than the second one.•Arsenate can be relocated to the second sorbent with a larger capacity for storage.•The relocation process would optimally occur when no water flows through a unit.