Chromium ion removal from raw water by magnetic iron composites and Shewanella oneidensis MR-1.

ABSTRACT: In this study, nanoiron active carbon composites (NZVI/GAC) were used to remove chromium ions from raw water. The composites were synthesized from a novel formula of biological activated carbon and characterized by various techniques. The adsorption test data were fit by a pseudo-second-order kinetic model and Langmuir model. The q_e and R² values were 187 mg Cr/g and 0.9960, respectively, with 0.2 g/L NZVI/GAC at an initial concentration of 118 mg/L Cr according to the Langmuir isotherm model. Moreover, a Cr⁶⁺ detoxification reactor was constructed with the magnetic iron composite. The results indicated that the synthesized magnetic iron composite was a significant adsorbent for Cr⁶⁺ removal from aqueous solutions. The detoxification reactor was

SUBMITTER: Wu H 

PROVIDER: S-EPMC6403255 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature