| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 644378 | Separation and Purification Technology | 2006 | 8 Pages |
Abstract
Removal of heavy metals by electrocoagulation generates substantial amount of electrocoagulated metal hydroxides sludge (EMHS). This paper reports calcined EMHS as an effective adsorbent for removal of PO43− from aqueous solutions. Cumulative % removal of PO43− is investigated in a batch adsorber with different initial adsorbate concentrations, adsorbent dose, pH of the solution and adsorption temperature. Adsorption of PO43− is due to ligand exchange between the OH group on oxide surface and PO43− in the aqueous medium with formation of inner surface complex. Removal of PO43− is found to be high at lower pH values and higher temperatures indicating strong positively charged metal oxide surface at acidic pH (
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
A.K. Golder, A.N. Samanta, S. Ray,