Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
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@article{JKSA3329, author = {Sriyanti Sriyanti and Taslimah Taslimah}, title = {Evaluasi Model Langmuir-Hinshelwood untuk Kinetika Adsorpsi Besi(III) pada 2-Merkaptobenzotiazol-Zeolit Alam}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {7}, number = {2}, year = {2004}, keywords = {zeolit alam; adsorpsi; 2-merkaptobenzotiasol; besi(III)}, abstract = {Telah dibuat adsorben dengan mengimpregnasikan 2-merkaptobenzotiazol pada padatan pendukung zeolit alam yang sebelumnya telah dilapisi polistirena. Adsorben yang dihasilkan selanjutnya digunakan untuk mengadsorpsi besi (III) dalam medium air. Sebelum impregnasi zeolit diberi perlakuan fisikokimia, meliputi pemanasan 80 0C dalam campuran KMnO4 dengan H2SO4; KMnO4 dengan HCl dan KMnO4 dengan H2SO4, dilanjutkan dengan HCl. Kajian kinetika dilakukan dengan variasi waktu kontak terhadap banyaknya besi (III) yang teradsorpsi menggunakan metode batch. Model kinetika Langmuir-Hinshelwood digunakan untuk mengesti-masi besarnya konstanta laju, dan perubahan energi bebas adsorpsi. Sebagai evaluasi digunakan model kinetika adsorpsi melalui dua proses, cepat dan lambat. Hasil penelitian menunjukkan bahwa perlakuan awal KMnO4-H2SO4-HCl pada zeolit alam dapat dinyatakan sebagai cara paling efektif untuk menurunkan aluminium (dealu-minasi). Data adsorpsi ion besi (III) pada adsorben yang dibuat dari zeolit alam dengan perlakuan awal tersebut menunjukkan besi (III) teradsorpsi paling lambat baik dengan model Langmuir-Hinshelwood (k1=0,39x10-2 menit-1) maupun model adsorpsi dua proses (laju cepat (kc)= 3,66x10-2 menit-1, laju lambat (kl)= 0,106 menit-1). Dari data energi bebas, besi(III) teradsorpsi secara fisik.}, issn = {2597-9914}, pages = {39--45} doi = {10.14710/jksa.7.2.39-45}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/3329} }
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