KAJIAN ADSORPSI ION LOGAM Cr(VI) OLEH ADSORBEN KOMBINASI ARANG AKTIF SEKAM PADI DAN ZEOLIT MENGGUNAKAN METODE SOLID-PHASE SPECTROPHOTOMETRY (SPS)

Sulistyo Saputro, Mohammad Masykuri, Lina Mahardiani, Bhakti Mulyani, Nita Tri Wahyuni

Abstract


Penelitian ini bertujuan untuk memanfaatkan kombinasi arang aktif sekam padi dan zeolit sebagai adsorben dalam mengadsorpsi ion logam Cr(VI) dan mempelajari pengaruh komposisi adsorben kombinasi arang aktif sekam padi dan zeolit dalam mengadsorpsi ion logam Cr(VI), serta sensitivitas metode solid-phase spectrophotometry (SPS) untuk menentukan penurunan kadar ion logam Cr(VI) dalam skala μg/L. Arang aktif sekam padi yang digunakan diperoleh melalui proses aktivasi dengan perendaman dalam larutan ZnCl2 10% sedangkan zeolit menggunakan larutan H2SO4 10%. Pengontakan adsorben dengan ion logam Cr(VI) dilakukan dengan variasi komposisi adsorben arang aktif  sekam padi dan zeolit  1:1, 1:2, 1:3, dan 2:1. Analisis kadar Cr(VI) dilakukan menggunakan metode solid-phase spectrophotometry (SPS). Karakterisasi arang aktif sekam padi dan zeolit dilakukan menggunakan FTIR. Hasil penelitian ini menunjukkan bahwa: (1) kombinasi arang aktif sekam padi dan zeolit dapat digunakan sebagai adsorben dalam mengadsorpsi ion logam Cr(VI) dengan kapasitas adsorpsi 0,28 µg/g; (2) komposisi optimum adsorben adalah 1:2 dengan persentase penyerapan sebesar 40,99%; (3) solid-phase spectrophotometry (SPS) merupakan metode yang sensitif untuk analisis penurunan kadar  ion Cr(VI) dalam tingkat µg/L dengan Limit of Detection (LOD) sebesar 0,021 µg/L.

 

Kata kunci : adsorpsi, Cr(VI), arang aktif sekam padi, zeolit, solid-phase spectrophotometry

 

Abstract

 

This study aims to study the use of activated rice husk charcoal and zeolite as combination adsorbents to adsorb Cr(VI) metal ions; the effect of the combination adsorbents of activated rice husk charcoal and zeolite’s compositions to adsorb Cr(VI) metal ions; and the sensitivity of solid-phase spectrophotometry (SPS) as a method to determine the reduced levels of Cr(VI) metal ions in the level of 15μ"> g/L. The activated rice husk charcoal used were obtained through the activation process by soaking in a solution of ZnCl2 10% while the zeolite with a solution of H2SO4 10%. The contacting process of the adsorbents with Cr(VI) metal ions was done by varying the compositions of the activated rice husk charcoal and zeolite adsorbent, 1:1, 1:2, 1:3, and 2:1. The data analysis of the Cr(VI) level used solid-phase spectrophotometry (SPS) method. Characterization of activated rice husk charcoal and zeolite used FTIR. The results showed that: (1) a combination of activated rice husk charcoal and zeolite can be used as adsorbent to adsorb Cr(VI) metal ions with the adsorption capacity was 0,28 15μ"> g/g; (2) the optimum composition of adsorbents was 1:2 with the percentage of absorption was 40,99%; (3) solid-phase spectrophotometry (SPS) is a sensitive method to determine the reduced levels of Cr(VI) in the level of 15μ"> g/L with the limit of detection (LOD) was 0,021 15μ"> g/L.

 

Keywords: adsorption, Cr(VI),  activated  rice husk charcoal,  zeolite, solid-phase spectrophotometry


Keywords


adsorpsi, Cr(VI), arang aktif sekam padi, zeolit, solid-phase spectrophotometry

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References


Bernard, E., Jimoh, A., & Odigure, J.O. (2013). Heavy Metals Removal from Industrial Wastewater by Activated Carbon Prepared from Coconut Shell. Research Journal of Chemical Sciences, 3 (8), 3-9

Widowati, W., Sastiono, A., & Jusuf, R. (2008). Efek Toksik Logam: Pencegahan dan Penanggulangan Pencemaran. Yogyakarta: Andi.

Saputro, S., et al. (2009). Improved Solid-phase Spectrophotometry for the Microdetermination of Chromium(VI) in Natural Water. Analytical Sciences, 25, 1445-1450

Heydari (2013). Adsorption of Chromium Ions from Aqueous Solution by Carbon Adsorbent. International Journal of Environmental, Ecological, Geological and Marine Engineering, 7 (12), 632-635

Giri, H.P.D., Sudiarta, I.W., & Asih, I.A.R.A. (2014). Optimasi Adsorpsi Cr(VI) pada Silika Gel dari Abu Sekam Padi Termodifikasi Difenilkarbazida (Si-DPZida). Jurnal Kimia 8 (2), 198-204

Singh, S.R. & Singh, A.P. (2012). Treatment of Water Containing Chromium (VI) Using Rice Husk Carbon As a New Low Cost Adsorbent. International Journal of Environmental Research, 6 (4), 917-924

Suminten, N.K., Sudiarta, I.W., & Simpen, I.N. (2014). Adsorpsi Ion Logam Cr(III) pada Silika Gel dari Abu Sekam Padi Termodifikasi Ligan Difenilkarbazon (Si-DPZon). Jurnal Kimia, 8 (2), 231-236

Danarto, Y.C. & Samun, T. (2008). Pengaruh Aktivasi Karbon dari Sekam Padi pada Proses Adsorpsi Logam Cr(VI). Ekuilibrium, 7 (1), 13–16

Purwaningsih, D. (2009). Adsorpsi Multi Logam Ag(I), Cr(III), Cu(II) dan Ni(II) pada Hibrida Etilendiaminosilika dari Abu Sekam Padi. Jurnal Penelitian Saintek, 14 (1), 59-76

Zulti, F., Dahlan, K., & Sugita, P. (2012). Adsorptiom of Waste Metal Cr(VI) with Composite Membranes (Chitosan-Silica Rice Husks). Makara Journal of Science, 16 (3), 163-168

Sani, A., Rosita, A., & Rakhmawaty, D. (2009). Pembuatan Fotokatalis TiO2-Zeolit Alam Asal Tasikmalaya untuk Fotodegradasi Metylene Blue. Jurnal Zeolit Indonesia, 8 (1), 6-14

Lestari, D.Y. (2010). Kajian Modifikasi dan Karakterisasi Zeolit Alam dari Berbagai Negara. Prosiding Seminar Nasional Kimia dan Pendidikan Kimia. FMIPA. UNY

Jumaeri (2009). Pengaruh Konsentrasi NaOH dan Temperatur pada Sintesis Zeolit dari Abu Layang secara Alkali Hidrotermal. Jurnal Zeolit Indonesia, 8 (1), 22-32

Yoshimura, K. & Waki, H. (1985). Ion-Exchanger Phase Absorptiometry for Trace Analysis. Talanta, 32 (5), 245-352

Siahaan, S., Hutapea, M., & Hasibuan, R. (2013). Penentuan Kondisi Optimum Suhu dan Waktu Karbonisasi pada Pembuatan Arang dari Sekam Padi. Jurnal Teknik Kimia USU, 2 (1), 26-30

Nugroho, W. & Purwoto, S. (2013). Removal Klorida, TDS dan Besi pada Air Payau melalui Penukar Ion dan Filtrasi Campuran Zeolit Aktif dengan Karbon Aktif. Jurnal Teknik WAKTU, 11 (1), 47-59




DOI: https://doi.org/10.21831/jsd.v5i2.13718

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