Sorption of cadmium and lead from aqueous solutions by spent grain
The sorption of cadmium and lead from aqueous solutions by spent grain, a by-product of the brewing process, was investigated. The effects of solution pH, ionic strength, initial concentration, ligands and temperature were studied in batch experiments. The equilibrium process was described well by t...
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| Format: | Article |
| Language: | English English |
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Elsevier
2000
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| Online Access: | http://psasir.upm.edu.my/id/eprint/40019/ http://psasir.upm.edu.my/id/eprint/40019/1/Sorption%20of%20cadmium%20and%20lead%20from%20aqueous%20solutions%20by%20spent%20grain.pdf http://psasir.upm.edu.my/id/eprint/40019/7/1-s2.0-S0032959200001771-main.pdf |
| _version_ | 1848849306973372416 |
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| author | Low, Kun She Lee, Chnoong Kheng Liew, S. C. |
| author_facet | Low, Kun She Lee, Chnoong Kheng Liew, S. C. |
| author_sort | Low, Kun She |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The sorption of cadmium and lead from aqueous solutions by spent grain, a by-product of the brewing process, was investigated. The effects of solution pH, ionic strength, initial concentration, ligands and temperature were studied in batch experiments. The equilibrium process was described well by the Langmuir isotherm model with maximum sorption capacities of 17.3 and 35.5 mg/g of cadmium and lead on spent grain, respectively. The enthalpy of sorption was endothermic and the increase in Pb uptake was larger than that of Cd over the same rise in temperature. The initial uptake was rapid and equilibrium was established in less than 120 min. Good correlation coefficients were obtained for the pseudo second-order kinetic model. Equimolar concentrations of Cd and Pb to ethylenediamine tetraacetic acid and nitrilotriacetic acid almost completely suppressed the uptake of metals. Sorption capacities of spent grain for cadmium and lead were compared with some low-cost biological materials. |
| first_indexed | 2025-11-15T09:48:18Z |
| format | Article |
| id | upm-40019 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T09:48:18Z |
| publishDate | 2000 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-400192024-07-18T23:44:18Z http://psasir.upm.edu.my/id/eprint/40019/ Sorption of cadmium and lead from aqueous solutions by spent grain Low, Kun She Lee, Chnoong Kheng Liew, S. C. The sorption of cadmium and lead from aqueous solutions by spent grain, a by-product of the brewing process, was investigated. The effects of solution pH, ionic strength, initial concentration, ligands and temperature were studied in batch experiments. The equilibrium process was described well by the Langmuir isotherm model with maximum sorption capacities of 17.3 and 35.5 mg/g of cadmium and lead on spent grain, respectively. The enthalpy of sorption was endothermic and the increase in Pb uptake was larger than that of Cd over the same rise in temperature. The initial uptake was rapid and equilibrium was established in less than 120 min. Good correlation coefficients were obtained for the pseudo second-order kinetic model. Equimolar concentrations of Cd and Pb to ethylenediamine tetraacetic acid and nitrilotriacetic acid almost completely suppressed the uptake of metals. Sorption capacities of spent grain for cadmium and lead were compared with some low-cost biological materials. Elsevier 2000-09 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/40019/1/Sorption%20of%20cadmium%20and%20lead%20from%20aqueous%20solutions%20by%20spent%20grain.pdf text en http://psasir.upm.edu.my/id/eprint/40019/7/1-s2.0-S0032959200001771-main.pdf Low, Kun She and Lee, Chnoong Kheng and Liew, S. C. (2000) Sorption of cadmium and lead from aqueous solutions by spent grain. Process Biochemistry, 36 (1-2). pp. 59-64. ISSN 1359-5113; ESSN: 1873-3298 10.1016/S0032-9592(00)00177-1 |
| spellingShingle | Low, Kun She Lee, Chnoong Kheng Liew, S. C. Sorption of cadmium and lead from aqueous solutions by spent grain |
| title | Sorption of cadmium and lead from aqueous solutions by spent grain |
| title_full | Sorption of cadmium and lead from aqueous solutions by spent grain |
| title_fullStr | Sorption of cadmium and lead from aqueous solutions by spent grain |
| title_full_unstemmed | Sorption of cadmium and lead from aqueous solutions by spent grain |
| title_short | Sorption of cadmium and lead from aqueous solutions by spent grain |
| title_sort | sorption of cadmium and lead from aqueous solutions by spent grain |
| url | http://psasir.upm.edu.my/id/eprint/40019/ http://psasir.upm.edu.my/id/eprint/40019/ http://psasir.upm.edu.my/id/eprint/40019/1/Sorption%20of%20cadmium%20and%20lead%20from%20aqueous%20solutions%20by%20spent%20grain.pdf http://psasir.upm.edu.my/id/eprint/40019/7/1-s2.0-S0032959200001771-main.pdf |