Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III)
Immobilization of humic acid on chitin has been conducted and applied to the adsorption of Cr(III). The humic acid was isolated using NaOH 0.1 M, while chitin was isolated by deproteination of crab shells by using NaOH 3.5 % (w/v) and followed by demineralization using HCl 1 M. Chitin obtained from...
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| Format: | Article |
| Language: | English |
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Department of Chemistry, Pattimura University
2018-01-01
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| Series: | Indonesian Journal of Chemical Research |
| Subjects: | |
| Online Access: | https://ojs3.unpatti.ac.id/index.php/ijcr/article/view/175 |
| _version_ | 1818889131281874944 |
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| author | Muhamad Sehol Sri Juari Santosa Dwi Siswanta |
| author_facet | Muhamad Sehol Sri Juari Santosa Dwi Siswanta |
| author_sort | Muhamad Sehol |
| collection | DOAJ |
| description | Immobilization of humic acid on chitin has been conducted and applied to the adsorption of Cr(III). The humic acid was isolated using NaOH 0.1 M, while chitin was isolated by deproteination of crab shells by using NaOH 3.5 % (w/v) and followed by demineralization using HCl 1 M. Chitin obtained from ambient-temperature-dried crab shell is named as chitin I, and crab shell washed by HOCl solution and followed by drying at ambient temperature is named chitin II. The total acidity of the humic acid was 230.95 cmol/kg, and it was distributed into the acidity of COOH 168.75 cmol/kg, and phenolic-OH 62.20 cmol/kg. Adsorbent A with chitin I as the main material and adsorbent B with chitin II as the main material, resulted the adsorbed humic acid of 9.25 and 1.68% (w/w), respectively. Adsorption of Cr(III) was maximum at pH 5, with rate of constants orde of chitin II>adsorbent B>adsorbent A>chitin I, i.e. 0.3509; ; 0.2488; 0.1553; 0.0568 minute-1, respectively. The capacity of adsorption was in the orde of chitin I>adsorbent B>chitin II>adsorbent A, i.e. 944.77; 912.53; 895.37; 893.81 mg/g, respectively. The energy of adsorption of Cr(III) of chitin II>chitin I>adsorbent A>adsorbent B, i.e. 22.932; 20,945; 20.312; 19.615 kJ/mol, respectively. |
| first_indexed | 2024-12-19T17:04:08Z |
| format | Article |
| id | doaj.art-6feb47dc283d4301a874d16501bd1d20 |
| institution | Directory Open Access Journal |
| issn | 2338-5359 2614-2627 |
| language | English |
| last_indexed | 2024-12-19T17:04:08Z |
| publishDate | 2018-01-01 |
| publisher | Department of Chemistry, Pattimura University |
| record_format | Article |
| series | Indonesian Journal of Chemical Research |
| spelling | doaj.art-6feb47dc283d4301a874d16501bd1d202022-12-21T20:13:13ZengDepartment of Chemistry, Pattimura UniversityIndonesian Journal of Chemical Research2338-53592614-26272018-01-015210.30598//ijcr.2018.5-sehImobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III)Muhamad Sehol0Sri Juari Santosa1Dwi Siswanta2Biology Education Program - Faculty of Teacher Training and Education Iqra Buru UniversityDepartment of Chemistry, Faculty of Mathematic And Natural Science, Universitas Gadjah Mada, YogyakartaDepartment of Chemistry, Faculty Mathematics and Natural Science, University of Gadjah MadaImmobilization of humic acid on chitin has been conducted and applied to the adsorption of Cr(III). The humic acid was isolated using NaOH 0.1 M, while chitin was isolated by deproteination of crab shells by using NaOH 3.5 % (w/v) and followed by demineralization using HCl 1 M. Chitin obtained from ambient-temperature-dried crab shell is named as chitin I, and crab shell washed by HOCl solution and followed by drying at ambient temperature is named chitin II. The total acidity of the humic acid was 230.95 cmol/kg, and it was distributed into the acidity of COOH 168.75 cmol/kg, and phenolic-OH 62.20 cmol/kg. Adsorbent A with chitin I as the main material and adsorbent B with chitin II as the main material, resulted the adsorbed humic acid of 9.25 and 1.68% (w/w), respectively. Adsorption of Cr(III) was maximum at pH 5, with rate of constants orde of chitin II>adsorbent B>adsorbent A>chitin I, i.e. 0.3509; ; 0.2488; 0.1553; 0.0568 minute-1, respectively. The capacity of adsorption was in the orde of chitin I>adsorbent B>chitin II>adsorbent A, i.e. 944.77; 912.53; 895.37; 893.81 mg/g, respectively. The energy of adsorption of Cr(III) of chitin II>chitin I>adsorbent A>adsorbent B, i.e. 22.932; 20,945; 20.312; 19.615 kJ/mol, respectively.https://ojs3.unpatti.ac.id/index.php/ijcr/article/view/175Immobilization, humic acid, chitin, adsorption, Cr(III) |
| spellingShingle | Muhamad Sehol Sri Juari Santosa Dwi Siswanta Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) Indonesian Journal of Chemical Research Immobilization, humic acid, chitin, adsorption, Cr(III) |
| title | Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) |
| title_full | Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) |
| title_fullStr | Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) |
| title_full_unstemmed | Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) |
| title_short | Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) |
| title_sort | imobilisasi asam humat pada kitin dan aplikasinya sebagai adsorben cr iii |
| topic | Immobilization, humic acid, chitin, adsorption, Cr(III) |
| url | https://ojs3.unpatti.ac.id/index.php/ijcr/article/view/175 |
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