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All Journal Jurnal Riset Industri Hasil Hutan Konversi Jurnal Fisika FLUX Indonesian Journal of Chemistry Justek : Jurnal Sains Dan Teknologi Molekul: Jurnal Ilmiah Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Fullerene Journal of Chemistry Indonesian Journal of Chemical Science and Technology Journal of Banua Science Education Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Jurnal Ilmiah Berkala: Sains dan Terapan Kimia JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT (Journal of Environmental Sustainability Management) NAWASENA: Journal of Community Service
Utami Irawati
Department Of Chemistry, Faculty Of Mathematics And Natural Science, Lambung Mangkurat University Jl. Jend. Ahmad Yani KM 36 Banjarbaru, South Kalimantan 70714
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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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.
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  
Karakterisasi Kaolin Lokal Kalimantan Selatan Hasil Kalsinasi Sunardi Sunardi; Utami Irawati; Totok Wianto
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 | Full PDF (2398.733 KB) | 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.
Pengaruh Penambahan Template Polietilen Glikol Terhadap Karakter -Al2O3 dari Kaolin Sunardi Sunardi; Lilik Nofianti; Utami Irawati
Jurnal Fisika FLUX Vol 17, No 1 (2020): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (843.389 KB) | DOI: 10.20527/flux.v17i1.6451

Abstract

Synthesis of g-Al2O3 from Tatakan, South Kalimantan kaolin using simple methods: metakaolinization, dealumination, precipitation process using polyethylene glycol (PEG-6000) as a structure directing agent, calcination steps, and characterization of its products have been presented. The purified kaolin was metakaolinized and dealuminated to get amorphous aluminum hydroxide.  After that, the sample was precipitated using the various concentration of PEG and NH4OH as the precipitating agent. Calcination process was carried out at calcined at a temperature of 700°C for 3 hours. Based on the FTIR spectra and X-ray diffraction of the g-Al2O3 obtained was similar to that of commercial g-Al2O3. The highest crystallinity of g-Al2O3 was formed when using twice of critical micelle concentration of PEG (10-3 mol/L).  This simple process is an industrially practicable substitute to the Bayer process
Pengaruh Nanoselulosa dari Pelepah Nipah sebagai Filler terhadap Sifat Bioplastik Polivinil Alkohol Sunardi Sunardi; Nur Firda Trianda; Utami Irawati
Justek : Jurnal Sains dan Teknologi Vol 3, No 2 (2020): November
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v3i2.3704

Abstract

In this research, the synthesis of nanocellulose from Nypa fruticans fronds as a filler of polyvinyl alcohol-based bioplastic has been carried out. Nanocellulose synthesis was carried out using sulfuric acid hydrolysis process with a concentration of 30% and the results were analyzed using a Particle Size Analyzer. The effect of addition of the amount of nanocellulose on bioplastics from polyvinyl alcohol such as moisture content, thickness, transparency, vapor transmission rate, solubility and functional group analysis using FTIR have been evaluated. The results showed that the nanocellulose from Nypa fruticans fronds had a diameter below 600 nm. The addition of nanocellulose with a concentration of 0.2%; 0.4% and 0.6% into the polyvinyl alcohol bioplastic can increase the thickness and transparency of the bioplastic, and reduce the water vapor transmission rate. However, the addition of nanocellulose in this range did not significantly affect the water content and the solubility of bioplastics in water.
Synthesis And Characterization Of Alginate Based Bioplastic With The Addition Of Nanocellulose From Sago Frond As Filler Nor Pana Yupa; Sunardi Sunardi; Utami Irawati
Justek : Jurnal Sains dan Teknologi Vol 4, No 1 (2021): Mei
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v4i1.4308

Abstract

Abstract: The bioplastic synthesis of alginate in this study has been carried out using nanocellulose from sago fronds as a filler. Bioplastic synthesis uses different nanocellulose concentrations, namely 0%; 0.2%; 0.4%; and 0.6% (w / w). This study aims to see how the characteristics of bioplastics with the addition of nanocellulose. The resulting bioplastics were analyzed for moisture content, solubility, thickness, transmission rate, and transparency. The results of the research on the addition of nanocellulose concentrations show that nanocellulose can improve the characteristics of bioplastics in the form of thickness, transparency, moisture content, solubility, and water vapor transmission. Abstrak: Sintesis bioplastik dari alginat dalam penelitian ini telah dilakukan dengan menggunakan nanoselulosa dari pelepah sagu sebagai pengisi. Sintesis bioplastik menggunakan konsentrasi nanoselulosa yang berbeda beda yaitu  0%; 0,2%; 0,4%; dan 0,6% (b/b). Penelitian ini bertujuan untuk melihat bagaimana karakteristik bioplastik dengan  adanya penambahan nanoselulosa. Bioplastik yang dihasilkan dianalisis kadar air, kelarutan, ketebalan, laju transmisi dan transparansi. Hasil penelitian penambahan konsentrasi nanoselulosa menunjukkan bahwa  nanoselulosa dapat memperbaiki karakteristik dari bioplastik berupa ketebalan, transparansi, kadar air, kelarutan dan transmisi uap air. 
SINTESIS DAN KARAKTERISASI GAMMA ALUMINA (γ-Al2O3) DARI KAOLIN ASAL TATAKAN, SELATAN BERDASARKAN VARIASI TEMPERATUR KALSINASI Utami Irawati; Sunardi Sunardi; Suraida Suraida
Molekul Vol 8, No 1 (2013)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.332 KB) | DOI: 10.20884/1.jm.2013.8.1.123

Abstract

Sintesis dan karakterisasi gamma alumina (γ-Al2O3) dari kaolin asal Tatakan, Kalimantan Selatan berdasarkan variasi temperatur kalsinasi telah dilakukan. Gamma alumina (γ-Al2O3) diperoleh dengan metode sol-gel.Polyethylene glycol 6000 digunakan sebagai template pembentuk pori, presipitasi dilakukan dengan penambahan NH4OH 2,6 M hingga pH larutan 8-9 untuk memperoleh Al(OH)3. Kalsinasi dilakukan pada temperatur500, 600, 700 dan 800 0C. Gamma alumina (γ-Al2O3) hasil kalsinasi kemudian di analisis menggunakan Fourier Transform Infrared (FTIR) dan X-Ray Diftraction (XRD). Hasil analisis karakterisasi FTIR menunjukkan pada masing-masing variasi temperatur terbentuknya kerangka gamma alumina (γ-Al2O3) dan hasil XRD menunjukkan fasa alumina yang terbentuk adalah gamma alumina (γ-Al2O3). Struktur terbaik dari gamma alumina (γ-Al2O3) berdasarkan kekristalannya yaitu pada temperatur kalsinasi 700 0C dengan nilai 2θ = 46,06; 60,07 dan 66,93.
Effect of Chitosan Concentration on Macroporous Chitosan-TPP Beads toward Turbidity, Dye Content, and COD of Sasirangan Wastewater Dahlena Ariyani; Dwi Rasy Mujiyanti; Uripto Trisno Santoso; Riana Maulana; Retno Elya Rohmah; Utami Irawati
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 3 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i3.54259

Abstract

This research was carried out to determine the effect of chitosan concentration in synthesising crosslinked tripolyphosphate (TPP) macropore beads on turbidity, dye content, and Chemical of Demand (COD) Sasirangan wastewater. Macroporous chitosan-TPP beads were synthesised from chitosan solution with various concentrations of 2%, 3%, 4%, and 5% and added NaHCO3 as a porogen, then dripped into 0.75% tripolyphosphate solution. It was further interacted with Sasirangan wastewater by adsorption method with its effect analysed by using the turbidity value, dye content, and COD. The results showed that beads with a 3% chitosan concentration were the most effective in reducing the turbidity, dye content, and COD value. Furthermore, using a more than 3% chitosan concentration indicates reduced effectiveness. Macroporous Chitosan-TPP beads were able to produce a decrease in turbidity, dye content and COD by 81.21%, 55.44%, and 59.37%. 
MODIFIED KAOLIN WITH CATIONIC SURFACTANT FOR GIBBERELLIC ACID CARRIER MATERIALS Sunardi Sunardi; Utami Irawati; Yateman Arryanto; Sutarno Sutarno
Indonesian Journal of Chemistry Vol 11, No 1 (2011)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.336 KB) | DOI: 10.22146/ijc.21427

Abstract

Synthesis of surfactant modified kaolin from natural kaolin from Tatakan, Tapin, South Kalimantan and its application for carrier material of gibberellic acid have been conducted. The kaolin modification was done by surface engineering using cationic surfactant cetyltrimethylammonium bromide (C16TMABr). The characterizations of kaolin and surfactant modified kaolin were carried out by XRF, SEM, XRD, FTIR and TGA/DTA. The adsorption capacity of kaolin was determined by Langmuir adsorption isotherm model. The result showed that kaolin from Tatakan, South Kalimantan consist of kaolinite, halloysite, quartz, chlorite, and christobalite. Surface modification using cationic surfactant showed that increasing surfactant content onto kaolin was proportional to the amount of surfactant loaded. Gibberellic acid was partitioned into the organic phase created by the surfactant tails of the C16TMA+ modified kaolin. The calculations result by Langmuir adsorption isotherm model showed that the highest increasing adsorption capacity occurred on surfactant modified kaolin with surfactant/CEC ratio of 2.0, with the adsorption capacity of 28.41 mg/g.
Co-Authors Alfanaar, Rokiy Arfan, Aulia Rhamdani Arif Sholahuddin Chatimatun Nisa Dahlena Ariyani Desmalina Safitri Dewi Umaningrum Dewi Umaningrum Dirgahayu, Daniel Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Edi Mikrianto Etty Novita Fathul Jannah Fitriani, Rizky Aulia Gea, Temani Hamidah . Hanifa Muslima Hanna Habibah Hikmah, Nawwal Horale Pasaribu, Marvin Indah, Rahma Iriansyah Iriansyah Iriansyah Iriansyah, Iriansyah Laksono Trisnantoro Lilik Nofianti Manurung, Tety Wahyuningih Messy Risna Mokhamat Ariefin Nafia Fitrawati Nafisah Nafisah Nainggolan, Yuni Natania Gracia, Amanda Ningsih, Rima Oktavia Noer Komari Nor Pana Yupa Nora Rotua Sybianti Nugi Maulana Nugravita, Annisa Nurfadilla Nur Firda Trianda Puspita Jamilah Rahimah Radna Nurmasari Rahmi Wulandari, Oktavia Retno Elya Rohmah Riana Maulana Ricky Kurniawan Rinne Nintasari Risaldi Ridwan Risaldi Ridwan Rizki Fitria Ryu Pratiwi, Djihan Sunardi Sunardi sunardi sunardi Sunardi, Ph.D., Sunardi Suraida Suraida Sutarno Sutarno Tety Wahyuningsih Manurung Totok Wianto Umi Baroroh Lili Utami Uripto T Santoso Uripto T Santoso, Uripto T Uripto Trisno Santoso Wahyuningsih Manurung, Tety Yateman Arryanto