Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite
Industrial wastes and mining related activity are main sources of zinc contamination in soils and groundwater. The quality of soil, crop and water will also be affected by high concentrations of heavy metals. The adsorption behaviour of clinoptilolite (natural Iranian zeolite) and clinoptilolite-tri...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Malaysian Society of Soil Science
2013
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/29408/ http://psasir.upm.edu.my/id/eprint/29408/1/Sorption%20and%20desorption%20of%20zinc%20by%20clinoptilolite%20and%20cinoptilolite-tridymite.pdf |
| _version_ | 1848846391815700480 |
|---|---|
| author | Babak, Khayambashi Abdul Rahim, Anuar Abd. Wahid, Samsuri Balasundram, Siva Kumar Afyuni, Majid |
| author_facet | Babak, Khayambashi Abdul Rahim, Anuar Abd. Wahid, Samsuri Balasundram, Siva Kumar Afyuni, Majid |
| author_sort | Babak, Khayambashi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Industrial wastes and mining related activity are main sources of zinc contamination in soils and groundwater. The quality of soil, crop and water will also be affected by high concentrations of heavy metals. The adsorption behaviour of clinoptilolite (natural Iranian zeolite) and clinoptilolite-tridymite (Chinese zeolite) at different pHs has been studied in order to find out its applicability in agriculture as soil amendment. To elucidate zinc adsorption, batch experiment at constant pH was used. The mineralogical composition, specific surface area and CEC, were investigated by X-ray diffraction (XRD), BET-N2 sorption analysis and Na-acetate method, respectively. The data indicate that Iranian and Chinese zeolites contained 93.21 %, 58.83 % Clinoptilolite-Na, respectively, but high amount of tridymite (28.04 %) was also present in the Chinese zeolite. The Zn sorption isotherm data for both Iranian zeolite and Chinese zeolite were fitted to the Langmuir and Freundlich models. The sorption results at different pH showed that sorption at constant pH=5 and 7 can best be fitted to the Langmuir equation. It was found that qmax of Iranian zeolite was higher than Chinese zeolite at both pHs. According to the findings, the binding strength of Zn adsorption in Chinese Zeolite was 0.01, 0.03 (L mg-1) at pH 5 and pH 7 whereas KL for the Iranian zeolite was 0.02 (L mg-1) at both pHs. It is revealed that the affinity of Chinese zeolite for zinc adsorption was higher at pH=7. The results indicate that the zinc desorption percent at highest loading rates for Iranian zeolite were 36.1%, 41.5%, while for Chinese zeolite were 45.81%, 36.3% at pH value 5 and 7, respectively. |
| first_indexed | 2025-11-15T09:01:58Z |
| format | Article |
| id | upm-29408 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:01:58Z |
| publishDate | 2013 |
| publisher | Malaysian Society of Soil Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-294082016-07-13T01:48:34Z http://psasir.upm.edu.my/id/eprint/29408/ Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite Babak, Khayambashi Abdul Rahim, Anuar Abd. Wahid, Samsuri Balasundram, Siva Kumar Afyuni, Majid Industrial wastes and mining related activity are main sources of zinc contamination in soils and groundwater. The quality of soil, crop and water will also be affected by high concentrations of heavy metals. The adsorption behaviour of clinoptilolite (natural Iranian zeolite) and clinoptilolite-tridymite (Chinese zeolite) at different pHs has been studied in order to find out its applicability in agriculture as soil amendment. To elucidate zinc adsorption, batch experiment at constant pH was used. The mineralogical composition, specific surface area and CEC, were investigated by X-ray diffraction (XRD), BET-N2 sorption analysis and Na-acetate method, respectively. The data indicate that Iranian and Chinese zeolites contained 93.21 %, 58.83 % Clinoptilolite-Na, respectively, but high amount of tridymite (28.04 %) was also present in the Chinese zeolite. The Zn sorption isotherm data for both Iranian zeolite and Chinese zeolite were fitted to the Langmuir and Freundlich models. The sorption results at different pH showed that sorption at constant pH=5 and 7 can best be fitted to the Langmuir equation. It was found that qmax of Iranian zeolite was higher than Chinese zeolite at both pHs. According to the findings, the binding strength of Zn adsorption in Chinese Zeolite was 0.01, 0.03 (L mg-1) at pH 5 and pH 7 whereas KL for the Iranian zeolite was 0.02 (L mg-1) at both pHs. It is revealed that the affinity of Chinese zeolite for zinc adsorption was higher at pH=7. The results indicate that the zinc desorption percent at highest loading rates for Iranian zeolite were 36.1%, 41.5%, while for Chinese zeolite were 45.81%, 36.3% at pH value 5 and 7, respectively. Malaysian Society of Soil Science 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29408/1/Sorption%20and%20desorption%20of%20zinc%20by%20clinoptilolite%20and%20cinoptilolite-tridymite.pdf Babak, Khayambashi and Abdul Rahim, Anuar and Abd. Wahid, Samsuri and Balasundram, Siva Kumar and Afyuni, Majid (2013) Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite. Malaysian Journal of Soil Science, 17. pp. 69-83. ISSN 1394-7990 http://www.msss.com.my/mjss/abs17.html |
| spellingShingle | Babak, Khayambashi Abdul Rahim, Anuar Abd. Wahid, Samsuri Balasundram, Siva Kumar Afyuni, Majid Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| title | Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| title_full | Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| title_fullStr | Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| title_full_unstemmed | Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| title_short | Sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| title_sort | sorption and desorption of zinc by clinoptilolite and cinoptilolite-tridymite |
| url | http://psasir.upm.edu.my/id/eprint/29408/ http://psasir.upm.edu.my/id/eprint/29408/ http://psasir.upm.edu.my/id/eprint/29408/1/Sorption%20and%20desorption%20of%20zinc%20by%20clinoptilolite%20and%20cinoptilolite-tridymite.pdf |