Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process
The polymer-surfactant aggregate process has been developed to remove metallic ions from aqueous solutions for which the ions are typically at the mg/l (parts per million) concentration level. In some cases, such as extremely valuable or highly toxic metals, the concentration of metals may exist at...
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Published: |
Elsevier
2017
|
| _version_ | 1797054358739746816 |
|---|---|
| author | Hankins, N Shen, L |
| author_facet | Hankins, N Shen, L |
| author_sort | Hankins, N |
| collection | OXFORD |
| description | The polymer-surfactant aggregate process has been developed to remove metallic ions from aqueous solutions for which the ions are typically at the mg/l (parts per million) concentration level. In some cases, such as extremely valuable or highly toxic metals, the concentration of metals may exist at the μg/l (parts per billion) level. It is, nevertheless, essential to be able to apply such a process to treat them cost-effectively. In this paper, cadmium ions are removed from a 560 ppb aqueous solution down to a concentration of 17 ppb using 2 ppm polyethylenimine (PEI) and 0.02 mM sodium dodecyl sulphate (SDS). At such a low optimum dosage of polymer and surfactant (the removal agent), the loading percentage on the removal agent increases with the concentration of Cd(II) to as high as 39%. However, at this low optimum dosage of the removal agent, the removal efficiency of Cd(II) and the usage efficiency of the removal agent both have a lower tolerance toward salinity effects. This contrasts with the higher salinity tolerance corresponding to the higher optimum dosages commensurate with higher metallic ion concentrations. |
| first_indexed | 2024-03-06T18:56:10Z |
| format | Journal article |
| id | oxford-uuid:11e98005-d8df-43ef-891a-b35c2dd64131 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:56:10Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:11e98005-d8df-43ef-891a-b35c2dd641312022-03-26T10:04:53ZRemoval of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate processJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:11e98005-d8df-43ef-891a-b35c2dd64131Symplectic Elements at OxfordElsevier2017Hankins, NShen, LThe polymer-surfactant aggregate process has been developed to remove metallic ions from aqueous solutions for which the ions are typically at the mg/l (parts per million) concentration level. In some cases, such as extremely valuable or highly toxic metals, the concentration of metals may exist at the μg/l (parts per billion) level. It is, nevertheless, essential to be able to apply such a process to treat them cost-effectively. In this paper, cadmium ions are removed from a 560 ppb aqueous solution down to a concentration of 17 ppb using 2 ppm polyethylenimine (PEI) and 0.02 mM sodium dodecyl sulphate (SDS). At such a low optimum dosage of polymer and surfactant (the removal agent), the loading percentage on the removal agent increases with the concentration of Cd(II) to as high as 39%. However, at this low optimum dosage of the removal agent, the removal efficiency of Cd(II) and the usage efficiency of the removal agent both have a lower tolerance toward salinity effects. This contrasts with the higher salinity tolerance corresponding to the higher optimum dosages commensurate with higher metallic ion concentrations. |
| spellingShingle | Hankins, N Shen, L Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process |
| title | Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process |
| title_full | Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process |
| title_fullStr | Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process |
| title_full_unstemmed | Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process |
| title_short | Removal of metallic ions at the parts per billion level from aqueous solutions using the polymer-surfactant aggregate process |
| title_sort | removal of metallic ions at the parts per billion level from aqueous solutions using the polymer surfactant aggregate process |
| work_keys_str_mv | AT hankinsn removalofmetallicionsatthepartsperbillionlevelfromaqueoussolutionsusingthepolymersurfactantaggregateprocess AT shenl removalofmetallicionsatthepartsperbillionlevelfromaqueoussolutionsusingthepolymersurfactantaggregateprocess |