Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water
Water utilities dose copper in drinking water systems to inhibit/kill microorganisms including algae. Under conditions observed in the systems, the majority of dosed copper is reported to be in dissolved forms of Cu-NOM and inorganic compounds. High concentrations (40 mg/L) of ferric salts are repor...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
IWA Publishing
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/19754 |
| _version_ | 1848750120101740544 |
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| author | Zhan, Weixi Sathasivan, Arumugam Nolan, P. Koska, L. Heitz, Anna Joll, Cynthia |
| author2 | TBA |
| author_facet | TBA Zhan, Weixi Sathasivan, Arumugam Nolan, P. Koska, L. Heitz, Anna Joll, Cynthia |
| author_sort | Zhan, Weixi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Water utilities dose copper in drinking water systems to inhibit/kill microorganisms including algae. Under conditions observed in the systems, the majority of dosed copper is reported to be in dissolved forms of Cu-NOM and inorganic compounds. High concentrations (40 mg/L) of ferric salts are reported to be able to remove large amounts of copper. However, the fate of dissolved copper when a small amount of ferric salts (<2 mg/L) is present in natural water or in the distribution pipes when they are released from the corroded iron pipes are not known. The current paper investigates the mechanisms behind the dissolved copper removal in NOM-containing bulk water. When copper was dosed from 250–800 mg-Cu/L, relatively high solubility was demonstrated in Mundaring water, with dissolved copper increased from 250–720 mg-Cu/L. Both ferric chloride and ferric hydroxide were found to have a considerable ability to remove dissolved copper while the former showed higher capacity. Ferric chloride showed a linear relationship with copper removal (R2=0.99) and the removal by ferric hydroxide showed excellent agreement with either the Freundlich (R2=0.98) or Langmuir (R2=0.99) adsorption isotherm. |
| first_indexed | 2025-11-14T07:31:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-19754 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:31:46Z |
| publishDate | 2009 |
| publisher | IWA Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-197542017-09-13T16:00:43Z Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water Zhan, Weixi Sathasivan, Arumugam Nolan, P. Koska, L. Heitz, Anna Joll, Cynthia TBA Langmuir isotherm copper NOM Freundlich isotherm ferric salts adsorption Water utilities dose copper in drinking water systems to inhibit/kill microorganisms including algae. Under conditions observed in the systems, the majority of dosed copper is reported to be in dissolved forms of Cu-NOM and inorganic compounds. High concentrations (40 mg/L) of ferric salts are reported to be able to remove large amounts of copper. However, the fate of dissolved copper when a small amount of ferric salts (<2 mg/L) is present in natural water or in the distribution pipes when they are released from the corroded iron pipes are not known. The current paper investigates the mechanisms behind the dissolved copper removal in NOM-containing bulk water. When copper was dosed from 250–800 mg-Cu/L, relatively high solubility was demonstrated in Mundaring water, with dissolved copper increased from 250–720 mg-Cu/L. Both ferric chloride and ferric hydroxide were found to have a considerable ability to remove dissolved copper while the former showed higher capacity. Ferric chloride showed a linear relationship with copper removal (R2=0.99) and the removal by ferric hydroxide showed excellent agreement with either the Freundlich (R2=0.98) or Langmuir (R2=0.99) adsorption isotherm. 2009 Journal Article http://hdl.handle.net/20.500.11937/19754 10.2166/aqua.2009.006 IWA Publishing restricted |
| spellingShingle | Langmuir isotherm copper NOM Freundlich isotherm ferric salts adsorption Zhan, Weixi Sathasivan, Arumugam Nolan, P. Koska, L. Heitz, Anna Joll, Cynthia Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water |
| title | Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water |
| title_full | Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water |
| title_fullStr | Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water |
| title_full_unstemmed | Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water |
| title_short | Effectiveness of Ferric Salts to Remove Low Levels of Dosed Copper from NOM-Containing Natural Water |
| title_sort | effectiveness of ferric salts to remove low levels of dosed copper from nom-containing natural water |
| topic | Langmuir isotherm copper NOM Freundlich isotherm ferric salts adsorption |
| url | http://hdl.handle.net/20.500.11937/19754 |