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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 Journal of Applied Engineering and Technological Science (JAETS) 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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SIFAT MEKANIK BIOKOMPOSIT POLIPROPILENA DAUR ULANG MENGGUNAKAN SERAT ALANG-ALANG (Imperata cylindrica) Sunardi, Sunardi
Jurnal Riset Industri Hasil Hutan Vol 5, No 1 (2013)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.669 KB)

Abstract

Synthesized and characterization of biocomposites from recycle polypropylene  with alang-alang (Imperata cylindrica) as reinforcement have been done. Biocomposites was made by mixing biomass with recycle polypropylene in various amount of alang-alang  (0%, 10%, 20%, and 30%). The materials were characterized by FTIR spectroscopy (Fourier Transform Infrared) and SEM (Scanning Electron Microscopy). The physical and mechanical properties of the biocomposite materials were tested in material density, water content, porosity, modulus of elasticity (MOE) and modulus of rupture (MOR). The results was showed that the biocomposites with  alang-alang as reonforcement have better properties than their constituent materials. Biocomposites with 10% of alang-alang  showed the best physical and mechanical properties with value of MOE and MOR are  8818,34 kg/cm2 and 126,98 kg/cm2.Keywords : biocomposites, alang-alang, polypropylene
MODEL ADSORPSI TIMBAL (Pb) DAN SENG (Zn) DALAM SISTEM AIR-SEDIMEN DI WADUK RIAM KANAN KALIMANTAN SELATAN Nisa, Chatimatun; Irawati, Utami; 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  
Karakterisasi Kaolin Lokal Kalimantan Selatan Hasil Kalsinasi Sunardi, Sunardi; Irawati, Utami; Wianto, Totok
Jurnal Fisika FLUX Vol 8, No 1 (2011): Jurnal Fisika Flux Edisi Februari 2011
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v8i1.3106

Abstract

Kajian tentang karakteristik kaolin lokal asal Tatakan, Tapin, KalimantanSelatan setelah proses kalsinasi pada temperatur 800°C selama 3 jam telah dilakukanuntuk mengetahui perubahan struktur kaolin. Sampel kaolin sebelum dan setelahproses kalsinasi dianalisis menggunakan spektroskopi infra merah (FTIR), difraksisinar X (XRD) dan scanning electron microscopy (SEM). Hasil analisis menggunakanFTIR menunjukkan terjadinya kerusakan struktur dari kaolin akibat proses kalsinasiyang ditandai dengan hilangnya puncak serapan khas dari kaolin. Berdasarkan dataXRD dan analisis morfologi menggunakan SEM, proses kalsinasi menyebabkanperubahan struktur kaolin dari pseudoheksagonal berlapis menjadi fasa amorf.
Adsorpsi Logam Nikel dan Analisis Kristalinitas H-Faujasit dari Abu Layang Batubara Sunardi, Sunardi
Jurnal Fisika FLUX Vol 7, No 2 (2010): Jurnal Fisika Flux Edisi Agustus 2010
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v7i2.3091

Abstract

Sintesis H-Faujasit dari abu layang batu bara telah dilakukan sebagaiupaya untuk meningkatkan kemampuan adsorpsi faujasit terhadap logam transisidan situs asam dalam rangka pemanfaatannya sebagai katalis. Proses sintesisH-faujasit dilakukan dengan metode pertukaran ion menggunakan NH4NO3 1 Mselama 24 jam yang dilanjutkan dengan proses kalsinasi untuk menghilangkanNH3. Adsorpsi logam nikel dilakukan dengan metode pertukaran ion denganvariasi konsentrasi nikel nitrat 0,05; 0,1 dan 0,15 M selama 24 jam. Pengaruhproses pembentukan H-Faujasit dan pertukaran ion nikel pada struktur faujasitdikarakterisasi menggunakan spektrofotometer inframerah dan difraktometersinar X. Kandungan logam nikel yang teremban ditentukan denganspektrofotometer serapan atom. Hasil penelitian menunjukkan bahwapembentukan H-Faujasit menyebabkan kerusakkan struktur faujasit secarasignifikan. Peningkatan konsentrasi larutan nikel nitrat yang dipergunakan dalampertukaran ion menyebabkan peningkatan kandungan logam nikel danpenurunan kristalinitas faujasit awal.
PEMANFAATAN CANGKANG BEKICOT (ACHATINA FULICA) SEBAGAI KATALIS UNTUK REAKSI TRANSESTERIFIKASI (Kajian Pengaruh Temperatur Reaksi dan Rasio Mol Metanol: Minyak) Sunardi, Sunardi; Rosyidah, Kholifatu; Octaviana, Toto Betty
Jurnal Fisika FLUX Vol 10, No 2 (2013): Jurnal Fisika FLUX Edisi Agustus 2013
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v10i2.2636

Abstract

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh temperatur kalsinasiterhadap kristalinitas dan aktivitas katalis CaO dari limbah cangkang bekicot (Achatinafulica) dalam sintesis biodiesel dari minyak sawit. Preparasi katalis dilakukan denganmengkalsinasi cangkang pada variasi temperatur 700oC, 800oC dan 900oC selama 4jam untuk mendapatkan senyawa CaO dan dianalisis dengan XRD (X-Ray Difraction)untuk mengetahui karakteristik katalis yang diperoleh. Katalis kemudian digunakanuntuk reaksi transesterifikasi untuk mengetahui aktivitas katalitik dari CaO. Hasil yangdidapat menunjukkan bahwa katalis terbaik didapatkan pada temperatur kalsinasi800oC. Kondisi terbaik dicapai pada temperatur reaksi transesterifikasi 60oC denganrasio mol metanol:minyak 12:1.Kata Kunci: Biodiesel, Cangkang Bekicot, Transesterifikasi, CaO.
SIFAT MEKANIK BIOKOMPOSIT POLIPROPILENA DAUR ULANG MENGGUNAKAN SERAT ALANG-ALANG (Imperata cylindrica) Sunardi, Sunardi; Fitriana, Iin Noor; Wianto, Totok
Jurnal Riset Industri Hasil Hutan Vol 5, No 1 (2013)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.669 KB) | DOI: 10.24111/jrihh.v5i1.1211

Abstract

Synthesized and characterization of biocomposites from recycle polypropylene  with alang-alang (Imperata cylindrica) as reinforcement have been done. Biocomposites was made by mixing biomass with recycle polypropylene in various amount of alang-alang  (0%, 10%, 20%, and 30%). The materials were characterized by FTIR spectroscopy (Fourier Transform Infrared) and SEM (Scanning Electron Microscopy). The physical and mechanical properties of the biocomposite materials were tested in material density, water content, porosity, modulus of elasticity (MOE) and modulus of rupture (MOR). The results was showed that the biocomposites with  alang-alang as reonforcement have better properties than their constituent materials. Biocomposites with 10% of alang-alang  showed the best physical and mechanical properties with value of MOE and MOR are  8818,34 kg/cm2 and 126,98 kg/cm2.Keywords : biocomposites, alang-alang, polypropylene
Pretreatment Lignoselulosa dari Jerami Padi dengan Deep Eutectic Solvent untuk Meningkatkan Produksi Bioetanol Generasi Dua (Lignocellulose Pretreatment of Rice Straw using Deep Eutectic Solvent to Increase Second-Generation Bioethanol Production) Nurwahdah, Nurwahdah; Naini, Al-Arofatus; Nadia, Asma; Lestari, Ratri Yuli; Sunardi, Ph.D., Sunardi
Jurnal Riset Industri Hasil Hutan Vol 10, No 1 (2018)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.345 KB) | DOI: 10.24111/jrihh.v10i1.4079

Abstract

Current issues of energy sector in Indonesia can be summarized as depletion of fossil energy reserves which is dominated by fuel oil and coal. Oil production continues to decline and the increase in oil fuels demand lead to increase imports of crude oil and oil fuels. To use lignocellulosic biomass waste has become a major alternative to replace fossil fuels and chemical feedstocks production. In 2015, total rice production in South Kalimantan reached 2,140,276 ton and rice straws were abundant waste which could be utilized as raw material for bioethanol production. Pretreatment process of lignocellulose is a crucial step to remove lignin because of the complex chemical cross-linking between chemical components. Delignification of lignin can increase the accessibility and digestibility of enzymatic, and help to promote enzymatic hydrolysis. Nowadays, pretreatment process with green chemistry method is continuesly developed by researcher to reduce the production costs and thus avoid adverse effects on human and the environment. This article disscussed about green methods for pretreatment of lignocellulosic material using deep eutectic solvent (DES) to increase second-generation bioethanol production in South Kalimantan.
Sintesis dan karakterisasi bioplastik dari pati ubi nagara dengan kaolin sebagai penguat Sunardi Sunardi, Ph.D.; Yulia Susanti; Kamilia Mustikasari
Jurnal Riset Industri Hasil Hutan Vol 11, No 2 (2019)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jrihh.v11i2.5084

Abstract

Penelitian tentang sintesis dan karakterisasi bioplastik dari pati ubi Nagara dengan penambahan kaolin telah dilakukan. Sintesis bioplastik dilakukan dengan metode melt intercalation dengan variasi jumlah kaolin 0-30% (b/b). Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan kaolin terhadap karakteristik bioplastik serta untuk mendapatkan jumlah kaolin optimum dalam pembuatan bioplastik. Bioplastik yang dihasilkan dianalisis kadar air, ketebalan, laju transmisi uap air, ketahanan air, kelarutan, biodegradasi, analisis gugus fungsional menggunakan FTIR, kuat tarik dan elongasinya. Berdasarkan hasil penelitian yang diperoleh, penambahan kaolin mempengaruhi semua karakteristik bioplastik yang dihasilkan. Nilai kuat tarik bioplastik yang dihasilkan meningkat dengan bertambahnya kaolin yang ditambahkan. Konsentrasi kaolin optimum dalam pembuatan bioplastik adalah pada penambahan 30% (b/b) kaolin dengan nilai kuat tarik sebesar 2,194 N/mm2.
Praperlakuan secara Hidrotermal Limbah Lignoselulosa untuk Produksi Bioetanol Generasi Kedua (Pretreatment of Lignocellulose Wastes Using Hydrothermal Method for Producing Second Generation Bioethanol) Al-Arofatus Naini; Nurwahdah Nurwahdah; Ratri Yuli Lestari; Sunardi Sunardi, Ph.D.
Jurnal Riset Industri Hasil Hutan Vol 10, No 2 (2018)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1202.403 KB) | DOI: 10.24111/jrihh.v10i2.4078

Abstract

The second generation of bioethanol derived from various cellulosic biomass materials is one of the latest renewable energy as the alternative of fossil fuel. The cellulosic waste based wood and non-wood materials are the most abundant natural resource on the earth, renewable, and inexpensive. Currently, second generation bioethanol development is still not optimally done due to various obstacles, especially the pretreatment process to eliminate lignin, influencing the conversion process of cellulose into reducing sugar. Hydrothermal method is one of lignocellulose pretreatments, which is widely developed because this method is relatively cheap and environmentally friendly with the utilization of water-based solvent. Hydrothermal methods performed at high temperature and pressure in a relatively short time are able to deconstruct the lignocellulose structure that enables cellulase enzymes to access cellulose for hydrolysis. This study discussed about the development of hydrothermal method for lignocellulose pretreatment process to increase production of second-generation bioethanol. Some aspects studied in this research were structural change, chemical composition, lignocellulosic crystallinity before and after hydrothermal processes, and hydrothermal effect on the production of reducing sugars. Hydrothermal method could be used and developed as an efficient and cheap method as the first treatment of lignocellulose waste in attempt to increase the production of bioethanol.
Kinerja Mengajar Dosen pada Masa Work From Home Lulu Choirun Nisa; Alfin Hikmaturrokhman; Sunardi Sunardi
At-Taqaddum Vol 12, No 2 (2020)
Publisher : Quality Assurance Institute (LPM) State Islamic University Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/at.v12i2.7025

Abstract

The Covid-19 pandemic has caused universities to adapt to various changes, especially lecture activities. The purpose of this article is to describe how lecturers carry out the teaching and learning process during a pandemic. The indicators are teaching methods, technology, schedules, evaluation techniques, and constraints. The data collection technique used a survey approach with 216 respondents. The analysis and discussion results show that the teaching method uses online discussions, online assignments, and virtual face-to-face meetings. In terms of technology, the majority of lecturers use the WA Group application, and the rest uses other media. For learning schedule indicators, the majority of lecturers deliver online learning according to the schedule. In evaluation techniques, most lecturers use online tests or quizzes to assess student achievement. The implementation of distance learning has obstacles, namely the achievement and competence of skills and technical barriers, such as signals, devices, and practical delivery skills.
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 Aurelia Monica Sari 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 Finki Dona Marleny Fitriana, Iin Noor Gunawan Hafizianor Hafizianor Hanna Habibah Henny Amelia Henny Arryati Ishiguri Futoshi Jeng Mas Ayu Devanda Buhang Kamilia Mustikasari Khairun Athiya Khoerul Anwar Khoirun Nisa Kholifatu Rosyidah Kissinger Kissinger Krisdianto Laksono Trisnantoro Lestari, Ratri Yuli Lilik Nofianti Lisa Andriana Kristy Liya Regita Lulu Choirun Nisa Lusyiani Lusyiani Mambang Mayori, Ersha Muhammad Alkaff Muhammad Arief Soendjoto Muhammad Faisal Mahdie Muhammad Nursandi Muhammad Rais Arifin Muhammad Riza Fahlevi Muhammad Zulfadhilah Munadi Munadi Muslih Anwar Nadia, Asma Naini, Al-Arofatus Nina Noviyanti Noer Komari Nor Pana Yupa Nur Firda Trianda Nurwahdah Nurwahdah Nurwahdah, Nurwahdah Octaviana, Toto Betty Purnama Lestari Purnama Lestari Ratri Yuli Lestari Ricardus Anggi Pramunendar Rina Muhayah Noor Pitri Risaldi Ridwan Risaldi Ridwan Riska Surya Ningrum Riska Surya Ningrum Rizki Fitria Rodiansono Rodiansono Rosidah - Salsabila Aqila Putri Selvi Carolina Subhan Panji Cipta Suraida Suraida Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Syaifuddin Syaifuddin Totok Wianto Utami Irawati Violet Violet Widya Fatiasari Widya Fatriasari Wijaya, Eka Setya Wiwin Tyas Istikowati Yateman Arryanto Yateman Arryanto Yateman Yateman Arryanto Yokota Shinso Yudian Noorhakim Yulia Susanti Yuslena Sari, Yuslena Zainal Abidin