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All Journal VALENSI BERKALA FISIKA Jurnal Penelitian Hasil Hutan The Journal of Pure and Applied Chemistry Research Journal of Engineering and Technological Sciences Jurnal Sains Dan Teknologi Lingkungan Jurnal Sains & Teknologi Lingkungan Jurnal Kimia Riset Jurnal Hasil Penelitian Industri INDONESIAN JOURNAL OF ESSENTIAL OIL Al-Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Biosaintifika: Journal of Biology & Biology Education Jurnal Purifikasi Chemistry Indonesian Journal of Chemical Research ASEAN Journal on Science and Technology for Development Jurnal Jamu Indonesia Jurnal Penelitian Hasil Hutan Milang Journal of Mathematics and Its Applications Analit: Analytical and Environmental Chemistry
Eti Rohaeti
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

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Journal : Jurnal Purifikasi

 1 
PENJERAPAN KROM LIMBAH CAIR PROSES PENYAMAKAN KULIT OLEH ZEOLIT ALAM Eti Rohaeti
Purifikasi Vol 7 No 1 (2006): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

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Abstract

Chromium removal and recovery carried out by using precipitation process was reported to become costly at lower cation concentration. Therefore, the use of natural zeolit, as one of mineral abundance in Indonesia, becomes an important ion exchanger and adsorbent for this cation at low concentration. In this research, chromium’s tanning wastewater was first reacted with a precipitating agent, sodium hydroxide 1,5 M. The remaining, chromium in the filtrate, was passed through columns packed with zeolit . Tanning wastewaters are originated from two tanneries, namely Gunung Putri and Citeureup in Kabupaten Bogor. The zeolite used is originated from Cikalong, Cikembar and Lampung. The first two are mordenite type with purity grade 79% and 84% respectively. The zeolite originated from Lampung was clinoptilolite type with 94% purity grade. The capacity of cation exchange of Cikalong zeolite, Lampung and Cikembar were 94,14, 89,62 and 79,70 respectively. The capacity of chromium adsorption of Cikalong zeolit, Lampung and Cikembar under chromium synthetic solution with batch operation were 1710, 1629 and 1150 mg/kg respectively. The capacity of chromium adsorption of Cikalong zeolit Lampung, and Cikembar under chromium synthetic solution with fixed-bed operation were 1350, 1507 and 399 mg/kg respectively. Under spent tanning solution with fixed-bad method the capacity of chromium adsorption of these three zeolit were 82, 160, and 82 mg/kg respectively.
ADSORPSI DAN DESORPSI ION KROMIUM (VI) PADA HDTMA-BENTONIT Eti Rohaeti
Purifikasi Vol 12 No 3 (2011): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4339.152 KB) | DOI: 10.12962/j25983806.v12.i3.290

Abstract

Bentonite is naturally negatively charged, and therefore has a high adsorption capacity towards cations such as mirrored by the cation exchange capacity (CEC) is high. This study aims to bentonite also has a high adsorption ability of anions of chromium (VI), as Cr2O72-, through activation by using hexadecyltrimethylammonium cation (HDTMA +). Bentonite origin Leuwiliang-Bogor, reacted with HDTMA + with an equivalent number of 25%, 50% and 100% CEC bentonite. HDTMA-bentonite produced and tested its ability to adsorps and desorps Cr (VI) anion. Optimum conditions of adsorption of Cr (VI) by HDTMA-bentonite carried out at pH, contact time and concentration of Cr (VI) are different. The analysis showed that the bentonite CEC Leuwiliang me/100g decreased from 54.3 to about 20.7 to 45.1 g me/100 after activated by HDTMA +. The acidity of bentonite also decreased from 4.95 me / g in natural bentonite to about 0.60 to 3.62 me / g after activated. Optimum conditions of adsorption of Cr (VI) by bentonite and HDTMA-bentonite occurs in the pH range of 2 to 5, the contact time of 3 to 4 hours and the concentration of Cr (VI) 200 to 500 ppm. Activation of bentonite with HDTMA + increases the adsorption capacity of bentonite to Cr (VI) of 4.44 mg / g to 11.96 to 22.09 mg / g. Desorption of Cr (VI) of HDTMA-bentonite by distilled water, 0.1 N HCl and 1 M CaCl 2 was relatively small, ranging from 0.89-4.15%, which indicates that Cr (VI) strongly bound in the HDTMA-bentonite.
Co-Authors A. KUSNANTO Achmad Fauzi Aditya Kurniawan Ali Miftahudin Anak Agung Gede Sugianthara Aryo Tedjo Asih Gayatri Budi Riza Putra Budi Riza Putra Budi Riza Putra Casnan, Casnan Citra Ajeng Palupi Deden Saprudin Derry Permana Desi Ramadhanti Djeni Hendra Erliza Noor Hadjomidjojo, Hartrisari Hartrisari Hadjomidjojo Hartrisari Hardjomidjojo Ibrahim Ibrahim Irmanida Batubara Irzaman, Irzaman J. JAHARUDDIN Latifah K Darusman Latifah K Darusman Latifah K. Darusman Latifah K. Darusman Latifah Kosim Darusman Linda Trivana Linda Trivana Linda Trivana, Linda Makmum Syafi’i Manggar Arum Aristri Moh Arif Rohman Nur Hakim Mohamad Rafi Muddathir, Ali Mahmoud N. G. Pamungkas Nur Adi Saputra Nurdiani Nurdiani, Nurdiani Nurhajawarsi Nurhajawarsi Purnawan Purnawan Rahadyanoto Trimulia Reni Febriani Rudi Heryanto Septaningsih, Dewi Anggraini Siahaan, Arnold Patogi Silvi Agusri Putri Sri Sugiarti Tamida Elinda Utami Dyah Syafitri Wulan Tri Wahyuni