Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan...
ABSTRACT In this research, the effect of Sangiran diatomaceous earth pre-treatment with sulfuric acid (H2SO4) and hydrochloric acid (HCI) on the kinetics of adsorption for Cr(III) in aqueous solution has been studied. The research has been carried out by mixing an amount of diatomeaeous earth with H...
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| Format: | Artikel |
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[Yogyakarta] : Universitas Gadjah Mada
2003
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| _version_ | 1826031228694822912 |
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| author | Perpustakaan UGM, i-lib |
| author_facet | Perpustakaan UGM, i-lib |
| author_sort | Perpustakaan UGM, i-lib |
| collection | UGM |
| description | ABSTRACT
In this research, the effect of Sangiran diatomaceous earth pre-treatment with sulfuric acid (H2SO4) and hydrochloric acid (HCI) on the kinetics of adsorption for Cr(III) in aqueous solution has been studied. The research has been carried out by mixing an amount of diatomeaeous earth with HCI or H2SO4 in various concentrations for two hours at temperature of 150 -200°C. The mixture was washed with water until neutral, and the residue was dried at 70°C for four hours. The result then was used as adsorbent. Adsorption was carried out by mixing an amount of adsorbent with Cr(III) solution in various contact times. Ion adsorbed was determined by analyzing filtrate using atomic absorption spectrophotometry. The effect of pre-treatment on adsorption kinetics was evaluated based on kinetic parameters, i.e. constant of adsorption rate by using Langmuir-Hinshelwood kinetics and using two-process kinetics (fast and slow processes). Adsorption kinetics calculated using LH equation gave negative value for adsorption rate constant of zero order (k0). On the other words, the LH kinetics might not be applied for adsorption of Cr(III) to diatomaceous earth adsorbent. Results of kinetics study approached using two processes (fast and slow) showed that
adsorption of Cr(III) occurred in two processes with rate constant of fast adsorption, k, 0.0411menit, rate constant of slow adsorption, k,, 0.0089/menit, and of slow desorption, kb 0.089/menit. Pre-treatment with HCI up to 10 M decreased either k, k, or k1, while pre-treatment with H2SO41M increased k to 0.061/menit, decreased lc, to 0.00424 and k., to 0.0139/menit. On pre-treatment with H2SO4 higher than 6 M significantly decreased three constants above. Based on the Gibbs energy change (4.31 � 6.79 kJ/mole) showed that adsorption involved physical interaction.
Keywords: adsorption, chromium, diatomaceous earth, kinetics, Langmuir-Hinshelwood |
| first_indexed | 2024-03-05T22:53:10Z |
| format | Article |
| id | oai:generic.eprints.org:18161 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-05T22:53:10Z |
| publishDate | 2003 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:181612014-06-18T00:30:15Z https://repository.ugm.ac.id/18161/ Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... Perpustakaan UGM, i-lib Jurnal i-lib UGM ABSTRACT In this research, the effect of Sangiran diatomaceous earth pre-treatment with sulfuric acid (H2SO4) and hydrochloric acid (HCI) on the kinetics of adsorption for Cr(III) in aqueous solution has been studied. The research has been carried out by mixing an amount of diatomeaeous earth with HCI or H2SO4 in various concentrations for two hours at temperature of 150 -200°C. The mixture was washed with water until neutral, and the residue was dried at 70°C for four hours. The result then was used as adsorbent. Adsorption was carried out by mixing an amount of adsorbent with Cr(III) solution in various contact times. Ion adsorbed was determined by analyzing filtrate using atomic absorption spectrophotometry. The effect of pre-treatment on adsorption kinetics was evaluated based on kinetic parameters, i.e. constant of adsorption rate by using Langmuir-Hinshelwood kinetics and using two-process kinetics (fast and slow processes). Adsorption kinetics calculated using LH equation gave negative value for adsorption rate constant of zero order (k0). On the other words, the LH kinetics might not be applied for adsorption of Cr(III) to diatomaceous earth adsorbent. Results of kinetics study approached using two processes (fast and slow) showed that adsorption of Cr(III) occurred in two processes with rate constant of fast adsorption, k, 0.0411menit, rate constant of slow adsorption, k,, 0.0089/menit, and of slow desorption, kb 0.089/menit. Pre-treatment with HCI up to 10 M decreased either k, k, or k1, while pre-treatment with H2SO41M increased k to 0.061/menit, decreased lc, to 0.00424 and k., to 0.0139/menit. On pre-treatment with H2SO4 higher than 6 M significantly decreased three constants above. Based on the Gibbs energy change (4.31 � 6.79 kJ/mole) showed that adsorption involved physical interaction. Keywords: adsorption, chromium, diatomaceous earth, kinetics, Langmuir-Hinshelwood [Yogyakarta] : Universitas Gadjah Mada 2003 Article NonPeerReviewed Perpustakaan UGM, i-lib (2003) Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... Jurnal i-lib UGM. http://i-lib.ugm.ac.id/jurnal/download.php?dataId=939 |
| spellingShingle | Jurnal i-lib UGM Perpustakaan UGM, i-lib Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... |
| title | Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... |
| title_full | Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... |
| title_fullStr | Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... |
| title_full_unstemmed | Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... |
| title_short | Kinetic Study On Adsorption Of Chromium(III) To Diatomaceous Earth Pre-Treated With Sulfuric And Hydrochloric Acids = Kajian Kinetika Adsorpsi Krom(III) Pada Tanah Diatomit Setelah Perlakuan dengan Asam Sulfat dan... |
| title_sort | kinetic study on adsorption of chromium iii to diatomaceous earth pre treated with sulfuric and hydrochloric acids kajian kinetika adsorpsi krom iii pada tanah diatomit setelah perlakuan dengan asam sulfat dan |
| topic | Jurnal i-lib UGM |
| work_keys_str_mv | AT perpustakaanugmilib kineticstudyonadsorptionofchromiumiiitodiatomaceousearthpretreatedwithsulfuricandhydrochloricacidskajiankinetikaadsorpsikromiiipadatanahdiatomitsetelahperlakuandenganasamsulfatdan |