Selective capture of hexavalent chromium from an anion-exchange column of metal organic resin-alginic acid composite.

ABSTRACT: We report an anion exchange composite material based on a protonated amine-functionalized metal-organic framework, denoted Metal Organic Resin-1 (MOR-1), and alginic acid (HA). MOR-1-HA material shows an exceptional capability to rapidly and selectively sorb Cr(vi) under a variety of conditions and in the presence of several competitive ions. The selectivity of MOR-1-HA for Cr(vi) is shown to be the result of strong O₃Cr^VI···NH₂ interactions. The composite sorbent can be successfully utilized in an ion-exchange column, in contrast to pristine MOR-1 which forms fine suspensions in water passing through the column. Remarkably, an ion exchange column with only 1% wt MOR-1-HA and 99% wt sand (an inert and inexpensive ma

SUBMITTER: Rapti S 

PROVIDER: S-EPMC6004612 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature