Anion exchange capacity of chromate on modified zeolite clinoptilolite with HDTMA-Br and its regeneration
Widajanti Wibowo, Tresye Utari, Rika Tri Yunarti ([Direktorat Riset dan Pengabdian Masyarakat UI;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, Universitas Indonesia], 2011)
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ABSTRACT Zeolite Clinoptilolite from Lampung, located in South of Sumatra, hadbeen modified with surfactant hexadecyltrimethylammonium bromide (HDTMA-Br) as chromate anion exchanger. Surfactant modified zeolite (SMZ) Clinoptilolite in particle size range of 1.5 - 2.0 mm, which contained 196.7 mmol HDTMA-Br/kg zeolite, was used for anion exchange of chromate at neutral pH. This experiment was conducted in a glass column filled with 5 gram SMZ. The breakthrough chromate exchange capacity was found 1.262 mg/g SMZ, while the total capacity was found 2.107 mg/g SMZ. The regeneration of SMZ saturated with chromate was conducted using a mixed solutions of 0.28 M Na2CO3 and 0.5 M NaOH, compared with using a solution of 0.01 M Na2S2O4. The desorption of chromate achieved 92% with the mixed solutions of Na2CO3 and NaOH and 90% with the Na2S2O4 solution. The regenerated SMZ with Na2CO3-NaOH solutions was prior washed with HCl solution to remove the carbonate from SMZ, before being used for chromate sorption again. Its breakthrough capacity was reduced to 1.074 mg/g SMZ, and to 0.724 mg/g SMZ when regenerated with Na2S2O4solution. These results indicated that regeneration of SMZ affected its exchange capacity for anion chromate. However, it is still could be acceptable, when Na2CO3/NaOH solutions were used for the regenerationof SMZ saturated with anion chromate. |
No. Panggil : | J-Pdf |
Entri utama-Nama orang : | |
Entri tambahan-Nama orang : | |
Subjek : | |
Penerbitan : | [Place of publication not identified]: [Direktorat Riset dan Pengabdian Masyarakat UI;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, Universitas Indonesia], 2011 |
Sumber Pengatalogan : | LibUI eng rda |
ISSN : | 23391995 |
Majalah/Jurnal : | Makara : Sains |
Volume : | Vol. 15, No. 1, April 2011: 53-57 |
Tipe Konten : | text |
Tipe Media : | unmediated |
Tipe Carrier : | volume |
Akses Elektronik : | http://journal.ui.ac.id/index.php/science/article/view/878/837 |
Institusi Pemilik : | Universitas Indonesia |
Lokasi : | Direktorat Riset dan Pengabdian Masyarakat UI |
No. Panggil | No. Barkod | Ketersediaan |
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J-Pdf | 03-19-053139809 | TERSEDIA |
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