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All Journal Acta Chimica Asiana Jurnal Pijar MIPA
Made Ganesh Darmayanti
Department Of Chemistry, Faculty Of Mathematics And Natural Science, University Of Mataram, Indonesia
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics

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Adsorpsi Metanil Yellow Menggunakan Karbon Aktif Limbah Cangkang Buah Kawista (Limonia Acidissima L.) Dina Asnawati; Sri Seno Handayani; Siti Raudhatul Kamali; Saprini Hamdiani; Iwan Sumarlan; Made Ganesh Darmayanti; Lala Ghina Aulia
Jurnal Pijar Mipa Vol. 15 No. 3 (2020): Juni
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (186.758 KB) | DOI: 10.29303/jpm.v15i3.1724

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui karakteristik arang aktif serta kondisi optimum adsorpsi zat warna metanil yellow oleh arang aktif limbah cangkang buah kawista yang meliputi massa adsorben, waktu kontak, suhu dan pH. Arang aktif dibuat melalui proses aktivasi secara kimia yaitu dengan menggunakan zat aktivator HCl 1 M. Untuk mendapatkan arang aktif dengan karakteristik yang baik ditinjau dari kadar air, kadar abu dan kadar zat menguap. Hasil penelitian menunjukkan bahwa arang aktif limbah cangkang buah kawista yang diaktivasi dengan HCl 1 M menghasilkan arang aktif dengan karakteristik yang memenuhi standar baku mutu SNI 06-3730-1995, yaitu dengan kadar air 6,3%, kadar abu 9%, dan kadar zat menguap 3%. Hasil analisis dengan spektrofotometer FTIR menunjukkan bahwa arang aktif tersebut mempunyai gugus fungsi O–H pada 3435,13 cm-1 dan C=C pada 1621,22 cm-1. Limbah cangkang buah kawista dapat digunakan sebagai adsorben dengan kapasitas adsorpsi sebesar 5,48 mg/gram pada kondisi optimum yaitu massa 1 gram selama 90 menit dengan suhu 80 °C dan pH 7 (netral).   Kata Kunci: Adsorpsi, metanil yellow, arang aktif, cangkang buah kawista, HCl
Synthesis Of Paramagnetic Merkapto Silica Hybrid From Rice Husk Ash For Ag(I) Adsorben Saral Dwi Miftiyati; Saprini Hamdiani; Made Ganesh Darmayanti
Acta Chimica Asiana Vol. 1 No. 2 (2018)
Publisher : Chemistry Education Program, the University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v1i2.19

Abstract

A study has been conducted on the synthesis of paramagnetic mercapto silica hybrids as metal adsorbent of Ag(I). The aim of this study was to synthesis paramagnetic mercapto silica hybrid from rice husk ash waste, knowing the characteristics of paramagnetic mercapto silica hybrid from rice husk ash waste, and to determine the effect of pH, metal ions concentration, and the contact time on the value of adsorption capacity (Q). Based on the results of the study, it was found that paramagnetic mercapto silica hybrids can be synthesized from the rice husk ash waste. Characterization using FTIR spectroscopy showed that silanol (Si-OH), siloxan (Si-O-Si), -SH, and Fe-OH functional groups, and characterization of paramagnetic mercapto silica hybrid structures using XRD to show crystalline compounds with a position value of 2θ = 35.4 which showed that the magnetite material of Fe3O4 was coated by silica. Paramagnetic mercapto silica hybrids from rice husk waste can be used as adsorbent of Ag (I) metal at optimum conditions of pH 3, contact time of 120 minutes, and adsorption capacity of 392.01 mg/g. The suitable isotherm model is the Freundlich isotherm model which means the absorption of metal Ag (I) occurs physically, while adsorption of kinetics followed the pseudo II order kinetic model with a value of k = 3.01 g.mg-1 minute-1.
Co-Authors Cynthia Linaya Radiman Dina Asnawati I MADE SUDARMA Iwan Sumarlan Lala Ghina Aulia Murniati . Rahmah, Fina Nuzulul Saprini Hamdiani Saral Dwi Miftiyati Siti Raudhatul Kamali Sri Seno Handayani