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All Journal JURNAL KIMIA SAINS DAN APLIKASI Indonesian Journal of Forestry Research Jurnal Riset Industri Hasil Hutan At-Taqaddum Konversi QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Fisika FLUX Panrita Abdi - Jurnal Pengabdian pada Masyarakat EnviroScienteae Indonesian Journal of Chemistry Justek : Jurnal Sains Dan Teknologi JURNAL SELULOSA Walisongo Journal of Chemistry PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Molekul: Jurnal Ilmiah Kimia Jurnal Pengabdian Al-Ikhlas Jurnal Sylva Scienteae Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Jurnal Ilmiah Berkala: Sains dan Terapan Kimia JURNAL HUTAN TROPIS Abdimas Mandalika
Sunardi, Ph.D., Sunardi
- Program Studi Kimia, Fakultas MIPA Universitas Lambung Mangkurat Banjarbaru, Indonesia - Pusat Penelitian Material Berbasis Lahan Basah, Universitas Lambung Mangkurat Banjarbaru, Indonesia
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Journal : Konversi

 1 
ISOLATION OF MICROCRYSTALLINE CELLULOSE FROM MEDANG WOOD (Neolitsea latifolia) Sunardi Sunardi; Amelia Lestari; Ahmad Budi Junaidi; Wiwin Tyas Istikowati
Konversi Vol 8, No 2 (2019): Oktober 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v8i2.6881

Abstract

Abstract - Research on the effect of the use of HCl concentrations in the hydrolysis process of cellulose from medang wood (Neolitsea latifolia) on the characteristics of microcrystalline cellulose has been studied. The purpose of this study was to determine the effect of HCl concentration on the characteristics of microcrystalline cellulose. The analysis carried out included yield, pH, color, functional group characterization using FTIR and crystallinity index using XRD. The hydrolysis process was carried out at 105 °C for 15 minutes with variations in HCl concentrations of 1.5 N, 2.5 N and 3.5 N. Based on the results of the research conducted, the results showed that the use of variations in the concentration of HCl in the hydrolysis process affected the yield, color, TCI (Total Crystallinity Index) value of FTIR data and crystallinity index of XRD data. The yield of microcrystalline cellulose produced from each variation of concentration was 64.41, 61.94 and 53.99. The color of microcrystalline cellulose is getting darker as the concentration of HCl is used. Based on FTIR data, the TCl value of microcrystalline cellulose from each variation of concentration was 0.861%, 0.907% and 0.976%. XRD data shows an increase in crystallinity index produced from each variation in concentration on microcrystalline cellulose amounted to 80.52%, 82.17% and 83.49%.
ANALISIS SPEKTROSKOPI INFRAMERAH TRANSFORMASI FOURIER (FTIR) DAN PERUBAHAN WARNA LIGNOSELULOSA ALANG-ALANG (Imperata cylindrica) SETELAH PRETREATMENT MENGGUNAKAN ASAM ENCER Asma Fauziah; Rodiansono Rodiansono; Sunardi Sunardi
Konversi Vol 8, No 1 (2019): April 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v8i1.6506

Abstract

Abstrak. Alang-alang (Imperata cylindrica) mengandung sekitar 59% holoselulosa dan dapat digunakan sebagai bahan baku bioetanol. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pretreatment menggunakan asam encer terhadap karakteristik struktur kimia pada lignoselulosa alang-alang. Pretreatment dilakukan menggunakan asam encer dengan konsentrasi H2SO4 1%, 2%, 3% dan 4% pada suhu 210°C dalam autoclave selama 45 menit. Analisis perubahan struktur secara kimia setelah pretreatment dengan asam encer dilakukan menggunakan Spektroskopi Inframerah Transformasi Fourier (FTIR). Analisis perubahan warna dilakukan dengan metode CIELAB. Hasil yang diperoleh dari spektra FTIR mengindikasikan bahwa asam encer mendekontruksi strukur kimia dari alang-alang dengan melarutkan hemiselulosa selama proses pretreatment. Perubahan warna (ΔE) berkolerasi dengan modifikasi struktur kimia pada lignoselulosa alang-alang. Kata Abstrak. Alang-alang (Imperata cylindrica) mengandung sekitar 59% holoselulosa dan dapat digunakan sebagai bahan baku bioetanol. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pretreatment menggunakan asam encer terhadap karakteristik struktur kimia pada lignoselulosa alang-alang. Pretreatment dilakukan menggunakan asam encer dengan konsentrasi H2SO4 1%, 2%, 3% dan 4% pada suhu 210°C dalam autoclave selama 45 menit. Analisis perubahan struktur secara kimia setelah pretreatment dengan asam encer dilakukan menggunakan Spektroskopi Inframerah Transformasi Fourier (FTIR). Analisis perubahan warna dilakukan dengan metode CIELAB. Hasil yang diperoleh dari spektra FTIR mengindikasikan bahwa asam encer mendekontruksi strukur kimia dari alang-alang dengan melarutkan hemiselulosa selama proses pretreatment. Perubahan warna (ΔE) berkolerasi dengan modifikasi struktur kimia pada lignoselulosa alang-alang. Kata kunci: Imperata cylindrica, hidrotermal, asam encer, FTIR
MODEL ADSORPSI TIMBAL (Pb) DAN SENG (Zn) DALAM SISTEM AIR-SEDIMEN DI WADUK RIAM KANAN KALIMANTAN SELATAN Chatimatun Nisa; Utami Irawati; Sunardi Sunardi
Konversi Vol 2, No 1 (2013): April 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v2i1.118

Abstract

Logam berat merupakan unsur yang seringkali menjadi polutan utama dalam pencemaran air dan dapat membahayakan kehidupan organisme. Penelitian ini bertujuan untuk memprediksi pola perpindahan ion logam Pb dan Zn dari badan air ke sedimen berdasarkan fenomena adsorpsi isoterm di waduk Riam Kanan Kecamatan Aranio Kabupaten Banjar. Selain itu , penelitian ini diharapkan dapat memberikan informasi terhadap rona awal waduk Riam Kanan, dinamika, dan keadaan ion logam Pb dan Zn di sepanjang waduk Riam Kanan dari hulu hingga hilir. Metode yang digunakan adalah Standar Nasional Indonesia (SNI) dengan menggunakan instrumen Spektrofotometer Serapan Atom (AAS). Hasil analisis laboratorium diperoleh rata-rata kandungan Pb di air sebesar 0,0494 ppm – 0,2582 ppm, Zn sebesar 0,0002 ppm – 0,0370 ppm, sedangkan sedimen Pb sebesar 6,8311 mg/kg – 21,1756 mg/kg dan Zn 3,3778 mg/kg – 28,3522 mg/kg. Berdasarkan data percobaan ternyata perpindahan ion logam Pb dan Zn ke sedimen akan mengikuti model adsorpsi Langmuir dengan koefisien determinasi (R2) sebesar 0,8167 dan 0,8801. Keywords: Model adsorpsi, logam berat (Pb dan Zn), air, sedimenHeavy metals are often considered as main contaminant in water pollution and its highly dangerous for  living organisms in the contaminated area. The aim of this research  is to predict the movement pattern of Pb and Zn metal ions from water onto sediment in the Riam Kanan Reservoir, Aranio Sub-district, Banjar District. In addition, this study is expected to give information on the initial condition of Riam Kanan reservoir; dynamics; and the fate of Pb and Zn ions from upstream to downstream. The samples were analysed using AAS (Atomic Absorption Spectrophotometer) based on the Indonesian National Standard (SNI). Result of laboratory analysis showed that in the water, contents of metal Pb were 0.0494 ppm – 0.2582 ppm, Zn 0.0002 ppm – 0.0370 ppm. In the sediment, contents of Pb were 0.8311 mg/kg – 21.1756 mg/kg and Zn 3.3778 mg/kg – 28.3522 mg/kg. Based on the experimental data, it was found that the displacement of Pb and Zn onto sediment complies with Langmuir adsorption model where the  determination coefficient (R2) were 0.8167 and 0.8801 respectively. Keywords: Adsorption model, heavy metal (Pb and Zn), water, sediment  
Co-Authors Abdullah Abdullah Adi Rahmadi Agung Wibisono Ahmad Arsyad Ahmad Budi Junaidi Al-Arofatus Naini Alfin Hikmaturrokhman Amelia Lestari Aminuddin Prahatama Putra Aminuddin Prahatama Putra Anak Agung Ayu Ratih Frismanti Anang Kadarsah Anang Kadarsah Arfianti Arfianti Asma Fauziah Asma Fauziah Asma Nadia Asmianoor Latifah Aulia Rahman Maulana Azidi Irwan Budi Sutiya Budi Sutiya Budi Sutiya Chatimatun Nisa Dahlia Nuraini Pasaribu Danang Sudarwoko Adi Daniel Itta Darni Subari Dede Heri Yuli Yanto Dede Heri Yuli Yanto Desmalina Safitri Diana Ulfah Eko Suhartono Eny Dwi Pujawati Fatriani Fatriani Gunawan Hafizianor Hafizianor Hanna Habibah Henny Amelia Henny Arryati Ishiguri Futoshi Jeng Mas Ayu Devanda Buhang Kamilia Mustikasari Khairun Athiya Khoerul Anwar Khoirun Nisa Kissinger Kissinger Krisdianto Lestari, Ratri Yuli Lilik Nofianti Lisa Andriana Kristy Liya Regita Lulu Choirun Nisa Lusyiani Lusyiani Mayori, Ersha Muhammad Arief Soendjoto Muhammad Faisal Mahdie Muhammad Rais Arifin Muhammad Riza Fahlevi Munadi Munadi Muslih Anwar Nadia, Asma Naini, Al-Arofatus Nina Noviyanti Noer Komari Nor Pana Yupa Nur Firda Trianda Nurwahdah Nurwahdah Nurwahdah, Nurwahdah Purnama Lestari Purnama Lestari Ratri Yuli Lestari Rina Muhayah Noor Pitri Risaldi Ridwan Risaldi Ridwan Riska Surya Ningrum Riska Surya Ningrum Rizki Fitria Rodiansono Rodiansono Rosidah - Salsabila Aqila Putri Selvi Carolina Suraida Suraida Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Syaifuddin Syaifuddin Totok Wianto Utami Irawati Violet Violet Widya Fatiasari Widya Fatriasari Wiwin Tyas Istikowati Yateman Arryanto Yateman Arryanto Yateman Yateman Arryanto Yokota Shinso Yudian Noorhakim Yulia Susanti Zainal Abidin