The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass
The relationship between pH and heavy metal ion sorption by the biomass of two algal species was studied under controlled experimental conditions. It was observed that increasing heavy metal ion sorption by algal biomass with pH mainly arose from a change in algal cell properties, provided that the...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2003-07-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361703771953587 |
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| author | Ying-Zhong Tang Karina Y.H. Gin M.A. Aziz |
| author_facet | Ying-Zhong Tang Karina Y.H. Gin M.A. Aziz |
| author_sort | Ying-Zhong Tang |
| collection | DOAJ |
| description | The relationship between pH and heavy metal ion sorption by the biomass of two algal species was studied under controlled experimental conditions. It was observed that increasing heavy metal ion sorption by algal biomass with pH mainly arose from a change in algal cell properties, provided that the pH was below the level where the heavy metal ions started to precipitate. A drastic increase in metal ion sorption capacity (‘inflection point’) was observed at pH 4.5 for the algal biomass used in the study. All the experimental observations on the mutual effects between pH and metal sorption for four heavy metal ions (Cd 2+ , Cu 2+ , Pb 2+ and Zn 2+ ) and two algal species suggested that the mutual effects between pH and heavy metal ion sorption can be explained in terms of ion exchange and coulombic attraction between the heavy metal ions and the algal biomass. A ‘positive feedback’ was also suggested for the mutual effects between pH and heavy metal ion removal at higher initial pH levels, where the sorption of heavy metal ions may enhance their hydrolysis. |
| format | Article |
| id | doaj-art-5a87e81db7cb48dab8932fb7c2597caf |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2003-07-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-5a87e81db7cb48dab8932fb7c2597caf2025-02-03T10:07:35ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382003-07-012110.1260/026361703771953587The Relationship between pH and Heavy Metal Ion Sorption by Algal BiomassYing-Zhong Tang0Karina Y.H. Gin1M.A. Aziz2 Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, Singapore 119223 Department of Civil Engineering, National University of Singapore, 1 Engineering Drive 2, Engineering Block E1A, #07-03, Singapore 117576 Department of Civil Engineering, National University of Singapore, 1 Engineering Drive 2, Engineering Block E1A, #07-03, Singapore 117576The relationship between pH and heavy metal ion sorption by the biomass of two algal species was studied under controlled experimental conditions. It was observed that increasing heavy metal ion sorption by algal biomass with pH mainly arose from a change in algal cell properties, provided that the pH was below the level where the heavy metal ions started to precipitate. A drastic increase in metal ion sorption capacity (‘inflection point’) was observed at pH 4.5 for the algal biomass used in the study. All the experimental observations on the mutual effects between pH and metal sorption for four heavy metal ions (Cd 2+ , Cu 2+ , Pb 2+ and Zn 2+ ) and two algal species suggested that the mutual effects between pH and heavy metal ion sorption can be explained in terms of ion exchange and coulombic attraction between the heavy metal ions and the algal biomass. A ‘positive feedback’ was also suggested for the mutual effects between pH and heavy metal ion removal at higher initial pH levels, where the sorption of heavy metal ions may enhance their hydrolysis.https://doi.org/10.1260/026361703771953587 |
| spellingShingle | Ying-Zhong Tang Karina Y.H. Gin M.A. Aziz The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass Adsorption Science & Technology |
| title | The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass |
| title_full | The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass |
| title_fullStr | The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass |
| title_full_unstemmed | The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass |
| title_short | The Relationship between pH and Heavy Metal Ion Sorption by Algal Biomass |
| title_sort | relationship between ph and heavy metal ion sorption by algal biomass |
| url | https://doi.org/10.1260/026361703771953587 |
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