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All Journal Jurnal Ilmu Dasar PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman Science and Technology Indonesia JURNAL ATOMIK Chemistry Indonesian Journal of Chemical Research Dinamika Lingkungan Indonesia Ilmu Perikanan Tropis Nusantara ANDIL Mulawarman Journal of Community Engagement
Saibun Sitorus
Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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ADSORPSI SENYAWA ASAM BENZOAT MENGGUNAKAN KARBON AKTIF BATANG PISANG (Musa Paradisiaca. L) Iswara, Muhammad Wahyugo; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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Research on the adsorption of benzoic acid compounds using activated carbon of banana stems (Musa paradisiaca L) has been carried out. The method used is adsorption with activated adsorbent modification. SEM morphological results on banana stems showed differences before and after activation. From the research results obtained the optimum adsorption concentration of activated carbon of banana stems at adsorbent weight of 0.6 grams, xylene concentration of 40 ppm and adsorption capacity of 1.165 mg/g. Optimum time of activated carbon of banana stem was 0.4 gram, adsorption time was 45 minutes and adsorption capacity was 1.772 mg/g.
PEMBUATAN ETANOL DARI UMBI TALAS (Colocasia esculenta [L] Schott) DENGAN PENAMBAHAN GELATIN SEBAGAI SUMBER NITROGEN Saccharomyces Cerevisiae Abimanyu, Priem Reyhan; Kartika, Rudi; Sitorus, Saibun
JURNAL ATOMIK Vol 4 No 2 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Ethanol have made from taro’s flour with an addition of gelatin as nutrition source for Saccharomyces cereviciae. Ethanol are made within process hydrolysis, fermentation, distillation and Gas Chromatography analysis. Starch hydrolysis process are enzymatic through liquification and saccharification process with an addition of alpha-amylase and gluco-amylase which conversed starch into glucose. Fermentation process are used time variation within 5, 6, 7 and 8 days and gelatin as nutrition source are used in concentration to 0,5 %, 1 % and 1,5 % (v/v). The highest ethanol concentration are obtained in addition of 1 % gelatin with 7 days of fermentation which are 41,648 %.
ADSORPSI ZAT WARNA TEKSTIL UNGU DARI AIR LIMBAH INDUSTRI RUMAH TANGGA SARUNG TENUN SAMARINDA SEBERANG DENGAN MENGGUNAKAN SERBUK KULIT BUAH LAI (DURIO KUTEJENSIS (HASSK.) BECC.) Oliviani, Nadira; Wirawan, Teguh; Sitorus, Saibun
JURNAL ATOMIK Vol 8 No 2 (2023)
Publisher : Jurusan Kimia FMIPA UNMUL

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Pewarna tekstil termasuk senyawa yang sulit terurai secara alami, sehingga dapat berdampak negatif terhadap lingkungan perairan. Penelitian ini bertujuan untuk memanfaatkan kulit buah lai yang dibuat menjadi serbuk sebagai adsorben untuk menyerap zat warna tekstil ungu pada air limbah sarung tenun Samarinda Seberang. Tahap pertama dibuat dengan membilas bubuk kulit buah lai dengan air suling mendidih, kemudian dipanggang dan diayak dengan ayakan 60 mesh. Karakterisasi dilakukan dengan menggunakan Fourier Transform Infared (FTIR) dan Scanning Electron Microscopy (SEM). Kajian adsorpsi zat warna tekstil ungu oleh serbuk kulit buah lai dilakukan dengan variasi waktu, pH dan konsentrasi. Hasil karakterisasi dengan FTIR menunjukkan adanya CO, CH bending, C=C, C=O, CC alkena,Gugus CH dan berdasarkan hasil karakterisasi SEM serbuk cangkang lainnya memiliki permukaan yang berpori. Kondisi optimum adsorpsi zat warna tekstil ungu 100 ppm untuk 25 mL dengan berat adsorben 0,01 g terjadi pada waktu kontak 2,5 menit dan pH 9. Adsorpsi zat warna tekstil ungu mengikuti pola adsorpsi isoterm Langmuir dan memiliki kapasitas adsorpsi maksimum sebesar 1176 .0486 mg/g. Aplikasi pada sampel air limbah sarung tenun ungu Samarinda Seberang dengan konsentrasi 143,5 ppm sebanyak 25 mL dan menggunakan berat optimum 0,01 g, waktu 2,5 menit dan pH 9 diperoleh %Adsorpsi sebesar 72,0119%. 5 menit dan pH 9. Adsorpsi zat warna tekstil ungu mengikuti pola adsorpsi isoterm Langmuir dan memiliki kapasitas adsorpsi maksimum sebesar 1176 .0486 mg/g.Aplikasi pada sampel air limbah sarung tenun ungu Samarinda Seberang dengan konsentrasi 143,5 ppm sebanyak 25 mL dan menggunakan berat optimum 0,01 g, waktu 2,5 menit dan pH 9 diperoleh %Adsorpsi sebesar 72,0119%. 5 menit dan pH 9. Adsorpsi zat warna tekstil ungu mengikuti pola adsorpsi isoterm Langmuir dan memiliki kapasitas adsorpsi maksimum sebesar 1176 .0486 mg/g. Aplikasi pada sampel air limbah sarung tenun ungu Samarinda Seberang dengan konsentrasi 143,5 ppm sebanyak 25 mL dan menggunakan berat optimum 0,01 g, waktu 2,5 menit dan pH 9 diperoleh %Adsorpsi sebesar 72,0119%.
VERIFIKASI PARAMETER PENGUJIAN SURFAKTAN ANIONIK DALAM AIR LIMBAH DENGAN METODE MBAS MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Victoria, Stefanie; Sitorus, Saibun; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 7 No 2 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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Determination of the parameters verification of anionic surfactants in waste water samples based on the MBAS (Methylene Blue Active Substances) method using a UV-Vis spectrophotometer has been done. Verification of the measurement parameters refer to SNI 06-6989.51- 2005. The measurement results of several verification parameters is good showed that the linearity of the measurement indicated by the correlation coefficient value of 0.9909. The detection limit and quantitation limit values ​​obtained were 0.3622 mg/L and 1.2072 mg/L respectively. The precision value with %RSD was 2.5415%, and the %RPD value was 3.0686%. It is stated that this method can be used for the analysis of anionik surfactants in laundry wastewater and can be applied as a routine test at PT. Global Environment Laboratory.
APPLICATION OF UV SPECTROPHOTOMETER AND HPLC ON ANALYSIS OF CAFFEINE CONTENT IN ARABICA AND ROBUSTA COFFEES Prasetyo, Dedy; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 5 No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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Analysis of caffeine content in Arabica coffee and Robusta coffee using Ultra Violet (UV) spectrophotometers and High Performance Liquid Chromatography (HPLC) was carried out. Coffee samples were soxhleted with 96% ethanol with the rotation variation used, namely 4, 6, 8, 10 and 12. The extract was dissolved in 96% ethanol and tested with a UV spectrophotometer. The results obtained caffeine content in arabica coffee for 4, 6, 8, 10 and 12 rotations are 1.347 mg/L, 1.631 mg/L, 1.953 mg/L, 2.868 mg/L and 3.764 mg/L respectively. While the caffeine content obtained by Robusta coffee for 4, 6, 8, 10 and 12 turns are 1.820 mg/L, 2.258 mg/L, 2.741 mg/L, 3.814 mg/L and 4.781 mg/L, respectively. Caffeine content in Arabica and Robusta coffee were analyzed by HPLC. The results obtained in Arabica coffee are retention time of 5.079 minutes, area of 1265348 and height of 56539 and in Robusta coffee the retention time is 5,083 minutes, the area is 1249273 and the height is 55700.
PENENTUAN KADAR AMONIA (NH3) PADA AIR SUNGAI MAHAKAM MENGGUNAKAN SPEKTROFOTOMETER DENGAN METODE FENAT Kusumastuti, Meidina; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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Determination of Ammonia Levels (NH3) in Mahakam River Water at 5 points around the city of Samarinda has been carried out. The method used is to use a spectrophotometer by the phenate method. The results obtained at these five points are samples of Mahakam river water (Loa Janan Ilir), Mahakam river water (Samarinda Seberang), Mahakam river water (Sungai Kunjang), Mahakam river water (Samarinda Kota) and Mahakam river water (Sambutan) respectively with a concentration was 0.1043 mg/L; 0.1141 mg/L; 0.1303 mg/L; 0.0812 mg/L and 0.1214 mg/L. These results indicate that the highest ammonia concentration is in the Mahakam River (Sungai Kunjang), which is possible due to the high activity of ships. Keywords: Ammonia, phenate method and Mahakam River
PEMANFAATAN ARANG AKTIF DARI LIMBAH SERBUK GERGAJI KAYU BANGKIRAI (Shorea Laevifolia Eudert) SEBAGAI ADSORBEN ZAT WARNA RHODAMIN B Agustina, Linda; Sitorus, Saibun; Lianasari, Ika Yekti
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian yang telah dilakukan mengenai pemanfaatan arang aktif dari limbah serbuk gergaji kayu bangkirai sebagai adsorben zat warna Rhodamin B. Arang aktif dikarakterisasi menggunakan Scanning Electron Microscopy (SEM). Didapatkan hasil karakterisasi SEM sebelum dikontakkan dengan Rhodamin B pada perbesaran 2.000 kali dan 5.000 kali bentuk morfologi permukaan seragam dan merata sedangkan sesudah dikontakkan dengan Rhodamin B pada perbesaran 2.000 kali dan 5.000 kali bentuk morfologi permukaan tidak seragam dan merata. Rhodamin B diadsorpsi oleh arang aktif dan diukur dengan menggunakan Spektrofotometer UV-Vis pada panjang gelombang maksimum 554 nm. Didapatkan hasil kondisi optimum pada proses adsorpsi Rhodamin B sebanyak 25 mL adalah pada massa adsorben 0,2 gram, konsentrasi Rhodamin B 3 ppm dan waktu adsorpsi 45 menit dengan % teradsorpsi sebesar 96,37%.
PEMANFAATAN ARANG AKTIF SERBUK GERGAJI KAYU BANGKIRAI (Shorea lavefolia Endert) SEBAGAI ADSORBEN PELUMAS (OLI) BEKAS Youlanda, Desy; Sitorus, Saibun; Yusuf, Bohari
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The use of bangkirai wood sawdust as adsorbent for used lubricant (oil) adsorption has been carried out. The purpose of this research is to find out how activated charcoal from bangkirai wood sawdust (Shorea Lavefolia Endert) can be used as a lubricating adsorbent (oil) seen from the testing and characterization of activated charcoal. The process of making bangkirai wood sawdust activated charcoal 0 is through a carbonization process at 500 C for 15 minutes and an activation process is carried out in activated charcoal by soaking using 25% H3PO4 solution for 24 hours. Determination of the quality of activated charcoal is carried out by testing the moisture content, ash content and iodine absorption capacity. The results obtained were the water content of activated charcoal H3PO4 25% which was 1,0590%, the ash content of activated charcoal H3PO4 25% was 0,0998% and the absorption capacity of activated charcoal H3PO4 activated charcoal 25% was 375,3253 mg/g. The optimum conditions for the adsorption of used lubricant (oil) were using activated charcoal adsorbent bangkirai wood sawdust, namely the mass of 1,5 grams and the contact time of 30 minutes. Keywords: Adsorption, Oil, Activated Charcoal, sawdust, bangkirai wood
Adsorption Of Dye From Household Industrial Wastewater Of Samarinda Seberang Weaving Gloves Using Adsorbent From Activated Charcoal Lai Fruit Powder (Durio Kutejensis (Hassk.) Becc.) Sari, Riska Alif Kartika; Wirawan, Teguh; Sitorus, Saibun
JURNAL ATOMIK Vol 9 No 1 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i1.1271

Abstract

Textile dyes include compounds that are difficult to decompose naturally. In the waters is a serious environmental problem because it can have a negative impact. This study aims to utilize lai fruit peel which is used as activated charcoal as an adsorbent to adsorb purple dyes in woven sarong waste water. The first stage of making activated charcoal is through carbonation in a furnace at 500oC for 30 minutes. Activation was carried out chemically by immersing it in 2 M H2SO4 solution for 24 hours. FTIR characterization of the resulting activated carbon was carried out to determine its functional groups and SEM characterization to determine its morphology. The results of FTIR characterization of activated carbon from lai fruit peel powder have functional groups -CO- and –OH, while SEM characterization of activated carbon from lai fruit peel powder is in the form of fibers with open pore surfaces that are spread on the surface and cavity walls of the activated charcoal of lai fruit peel powder. The adsorption process was carried out using the bath method and the concentration of the purple dye was determined using a UV-Vis spectrophotometer. The results showed that the adsorption of purple dye by activated charcoal was optimal at contact time of 1 minute and at pH 8. Adsorption of purple dye followed by the Freundlich adsorption pattern and had a maximum chemical adsorption capacity of 55.209 mg/g.
Identifikasi Batuan PAF, NAF dan UNCERTAIN dengan Menggunakan Metode NTAPP Pada Area PT. Trubaindo Coal Mining, Melak-Kalimantan Timur Irviansyah, Alfian; Sitorus, Saibun; Panggabean, Aman Sentosa
Indonesian Journal of Chemical Research Vol 7 No 2 (2020): Edisi Bulan Januari (Edition for January)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2020.7-alf

Abstract

The research about identification of PAF, NAF and uncertain rock using NTAPP method in the PT. Trubaindo Coal Mining has been done. This research was conducted as an effort to control the potential for the formation of acid mine drainage, with identifying the types of mine rocks using certain testing methods. Some important parameters such as Total Sulfur Level, Slurry pH, Total Actual Acidity (TAA), Chromium Reducible Sulfur (CRS) and Acid Neutralizing Capacity (ANC) using the NTAPP method on mine rocks have been determined to identify mining rock category categories. Based on the results of tests on 101 samples, 63 samples were identified included in the category of rocks that are not NAF (Slurry pH value = 4.1 - 8.9; Total Sulfur = 0.01-0.60 %; CRS = 0.01-0.10 % and NTAPP = 0.030-0.959 %), 38 samples were classified as PAF (pH Slurry = 2.9-7.9; Total Sulfur = 0.01-5.10 %; CRS = 0.11-2.04 % and NTAPP = 0.053-4.571 %), and no sample was included in the uncertainty category.
Co-Authors Abimanyu, Priem Reyhan Adelia Salma Adeliawati Adnyana, Ketut Cahyadi agita rachmala ginting Agustinus Pata Agustinus Pata, Agustinus Akbarul Fauzan Albar Alhabib, Albar Alimuddin - Alimuddin - Aman Sentosa Panggabean Annisa Aisya Ardi Ardi Arif Ari Wibowo Arissah, Nur Ashari, Ayu Wanti Azzahro, Raisha Binsar Simangunsong Binsar Simangunsong, Binsar Bobby Charles Setiawan Boby Royan alfadlil Boby Royan alfadlil, Boby Royan Bohari Yusuf Cahyani, Amelya Putri Chairul Saleh Dani Safrian Kusuma Daniel Daniel Daniel Daniel Tarigan Dedy Prasetyo Deni Karisnawati Dewi Eka Yuliani Djihan Ryn Pratiwi, Djihan Ryn Erwin Erzha, Nutfahryza Eva Marliana, Eva Evi Mashunah Fadillah, Fahmi Fahmi, Ismi Firmansyah - Hairani, Rita Hamdhani, Hamdhani Hammamiyah, Ulinnuha Haspian Nanda Trimeido Hasriani Hasriani, Hasriani Henny Pagoray, Henny Hiyahara, Irfan Ashari Idris Mandang, Idris Indra Masmur Irviansyah, Alfian Iswara, Muhammad Wahyugo Juwita, Retno Khairul Zhafirin Bayu Al-Hazmi Kurniawan, Burhan Kusumastuti, Meidina Lambang Subagiyo Laupa, Siti Aisyah Lianasari, Ika Yekti Linda Agustina M, Eka Riskhi Magdaleni, Agustina Rahayu Margarita, Margarita Masmur, Hestina Muhamad Yulianto Nanang Tri Widodo Novianti, Rina Lia Nur Anisa Rahmawati Nurbah, Sahriana Putri Oliviani, Nadira Oman, Aries Pangaribuan, Fransiscus X. Rico Putri, Amelia Rahmadi, Mohammad Zulfian RAHMAT GUNAWAN Rahmat Gunawan Rifqi Favian Jiwani Rio Trisdiantoro Ritson Purba Ritson Purba, Ritson Riyanto, Rahmat Fajar Rudi Kartika, Rudi Rudy Agung Nugroho Ruga, Ritbey S. R, Firdaus Salsabilla Nur Anisa Samsul Rizal Sari, Ika Yekti Liana Sari, Prinka Susmita Sari, Riska Alif Kartika Sarwawan, Ade Putri Hawiyah Sihombing, Eka Putri Jayanthy Sihotang, Recha Defrosa Morasih Samta Siti Hosniah Subur P Pasaribu Sukma Wiratama Sulistiani, Oktaviana Dewi Teguh Wirawan Teguh Wirawan, Teguh Victoria, Stefanie Wahyudin, Muhamad Winni Astuti Winni Astuti, Winni Wiranata, Muhammad Harjan Yerwanto Ilang Yogie Henry Payung Yogie Henry Payung, Yogie Henry Youlanda, Desy