Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds
The adsorption of phosphate ion onto natural reed ( Arundo donax ) was studied in this work. The effect of phosphate initial concentration, adsorbent dose, pH, temperature, and salt addition on adsorption uptake was investigated. The results showed that the adsorption uptake is directly proportional...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2018-02-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617416684347 |
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| _version_ | 1841563128471486464 |
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| author | Arwa Abdelhay Abeer Al Bsoul Amani Al-Othman Nada M Al-Ananzeh Inshad Jum'h Ahmed A Al-Taani |
| author_facet | Arwa Abdelhay Abeer Al Bsoul Amani Al-Othman Nada M Al-Ananzeh Inshad Jum'h Ahmed A Al-Taani |
| author_sort | Arwa Abdelhay |
| collection | DOAJ |
| description | The adsorption of phosphate ion onto natural reed ( Arundo donax ) was studied in this work. The effect of phosphate initial concentration, adsorbent dose, pH, temperature, and salt addition on adsorption uptake was investigated. The results showed that the adsorption uptake is directly proportional to the phosphate ion initial concentration and inversely proportional to the adsorbent's dose and temperature. A maximum adsorption capacity of 16.2 mg/g was observed at neutral pH. The addition of sodium and potassium chlorides has decreased the adsorption uptake. The adsorption isotherms agree better with the Langmuir model. The negative values of (ΔG) and (ΔH) obtained from the thermodynamic study, indicted that the adsorption process is spontaneous and exothermic. The experimental adsorption data were analyzed using three kinetic models: pseudo-first order, pseudo-second order, and intra-particle diffusion model. The pseudo-second-order model presented the best fit with a determination coefficient ( R 2 ) higher than 0.99 and a minimum normalized standard deviation. |
| format | Article |
| id | doaj-art-2ee04b22ecfb48a1803ab1a2281379f9 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2018-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-2ee04b22ecfb48a1803ab1a2281379f92025-01-03T00:11:56ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382018-02-013610.1177/0263617416684347Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reedsArwa AbdelhayAbeer Al BsoulAmani Al-OthmanNada M Al-AnanzehInshad Jum'hAhmed A Al-TaaniThe adsorption of phosphate ion onto natural reed ( Arundo donax ) was studied in this work. The effect of phosphate initial concentration, adsorbent dose, pH, temperature, and salt addition on adsorption uptake was investigated. The results showed that the adsorption uptake is directly proportional to the phosphate ion initial concentration and inversely proportional to the adsorbent's dose and temperature. A maximum adsorption capacity of 16.2 mg/g was observed at neutral pH. The addition of sodium and potassium chlorides has decreased the adsorption uptake. The adsorption isotherms agree better with the Langmuir model. The negative values of (ΔG) and (ΔH) obtained from the thermodynamic study, indicted that the adsorption process is spontaneous and exothermic. The experimental adsorption data were analyzed using three kinetic models: pseudo-first order, pseudo-second order, and intra-particle diffusion model. The pseudo-second-order model presented the best fit with a determination coefficient ( R 2 ) higher than 0.99 and a minimum normalized standard deviation.https://doi.org/10.1177/0263617416684347 |
| spellingShingle | Arwa Abdelhay Abeer Al Bsoul Amani Al-Othman Nada M Al-Ananzeh Inshad Jum'h Ahmed A Al-Taani Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds Adsorption Science & Technology |
| title | Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds |
| title_full | Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds |
| title_fullStr | Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds |
| title_full_unstemmed | Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds |
| title_short | Kinetic and thermodynamic study of phosphate removal from water by adsorption onto () reeds |
| title_sort | kinetic and thermodynamic study of phosphate removal from water by adsorption onto reeds |
| url | https://doi.org/10.1177/0263617416684347 |
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