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All Journal VALENSI Jurnal Bahan Alam Terbarukan Jurnal Matematika & Sains SEMIRATA 2015 REKAYASA PROSIDING SEMINAR KIMIA REPOSITORY KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry JURNAL ATOMIK Chemistry Indonesian Journal of Chemical Research Molekul: Jurnal Ilmiah Kimia JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Aman Sentosa Panggabean
Department Of Chemistry, FMIPA MUlawarman University-Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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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 Matematika dan Ilmu Pengetahuan Alam, 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.
SINTESIS DAN KARAKTERISASI NANOPARTIKEL PERAK TERMODIFIKASI KITOSAN MENGGUNAKAN REDUKTOR NaBH4 Az Zahra, Upi Fathimah; Hindryawati, Noor; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 9 No 2 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i2.1406

Abstract

The research about synthesis of chitosan-modified silver nanoparticles using NaBH4 reducing agents has been carried out. This research aims to determine the optimum AgNO3 concentration, optimum pH and optimum stirring time. The chitosan-modified silver nanoparticles obtained were then characterized using a UV Vis Spectrophotometer, Particle Size Analyzer and Transmission Electron Microscopy instruments. The results of measurements using a UV-Vis Spectrophotometer, the synthesis of chitosan-modified silver nanoparticles was obtained was obtained at the optimum condition of AgNO3 concentration of 3x10-3 M, pH 4 and the optimum stirring time was 2 hours. The formation of AgNPs is characterized by the presence of typical absorption peaks at maximum wavelengths of 402 nm-434 nm. Keywords: Silver Nanoparticles, Chitosan, NaBH4
PEMANFAATAN LIMBAH NON B3 FLY ASH DAN BOTTOM ASH DARI KEGIATAN PLTU SEBAGAI SUBTITUSI BAHAN BAKU PEMBUATAN PAVING BLOCK DAN BATAKO Erzha, Nutfahryza; Sitorus, Saibun; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 9 No 2 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i2.1416

Abstract

The use of coal in power plant activities will produce solid waste in the form of fly ash and bottom ash. Alternative management to reduce the volume of ash waste is through utilization. Therefore, this study aims to determine the toxic characteristics of bottom ash fly ash waste, determine the physical properties of the compressive strength of paving blocks and bricks from the substitution of fly ash and bottom ash, as well as the most optimal proportion of substitution of the product based on the compressive strength parameter. Compatibility of Toxic Waste Characteristics is carried out through the Toxicity Characteristic Leaching Procedure (TCLP) test. Variation of optimal substitution for compressive strength is known through variations of fly ash and bottom ash substitution, for brick products which are 5%, 10%, 15%, and 20%, and for paving blocks which are 10%, 20%, 30%, and 40%. Through the TCLP test, it is known that the waste is below the TCLP A and TCLP B quality standards so it can be categorized as non toxic and hazardous waste. The results of using fly ash and bottom ash in brick products meet the requirements for compressive strength according to SNI 03-0349-1989. The results of using fly ash and bottom ash in paving block products meet the requirements for compressive strength according to SNI 03-0691-1996. The optimal variation of fly ash substitution for bricks is with 5% fly ash substitution that produces a compressive strength value of 201.42 kg/cm2 and paving blocks with 10% fly ash substitution that produces a compressive strength value of 225.01 kg/cm2. The optimal variation of bottom ash substitution for brick is with 5% bottom ash substitution that produces a compressive strength value of 226.30 kg/cm2 and for paving block is with 10% bottom ash substitution that produces a compressive strength value of 308.22 kg/cm2.
VERIFIKASI METODE PENENTUAN SULFUR DIOKSIDA (SO2) PADA SAMPEL UDARA AMBIEN DENGAN METODE PARAROSANILIN MENGGUNAKAN SPEKTROFOTOMETER UV-VISIBELE Anwar, Adliah; Pasaribu, Subur P.; Panggabean, Aman Sentosa
JURNAL KIMIA MULAWARMAN Vol 22 No 1 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i1.1119

Abstract

The research about verification method on determination of sulfur dioxide (SO2) on ambient air samples with the pararosaniline method using UV-Vis Spectrophotometer has been done. To obtain a valid measuring result, some important parameters of measurement on sulfur dioxide (SO2) in ambient air samples based on SNI 7119-7:2017. The results showed that the linearity of the measurement was very good as indicated by the correlation coefficient value was 0.9998. The limit of detection and limit of quantization was 2.7766 g/Nm3 and 7.4111 g/Nm3 respectively. The value of precision was good shown by %RSD < 2/3 CV Horwitz, and the accuracy of this method was good shown by a recovery percentage of 101.12%. Based on the results of this research, the pararosanilin method can be used to analyze sulfur dioxide (SO2) in ambient air samples with good results.
REVIEW ARTIKEL: POTENSI LIDAH BUAYA (Aloe vera (L.) Burm. f.) SEBAGAI BAHAN DASAR PEMBUATAN EDIBLE FILM/COATING Mayang, Julia Agustin; Pasaribu, Subur P.; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Plastic is a very common packaging material in the food industry, due to its practicality, durability, and flexibility. However, its negative impact on the environment has prompted efforts to find more environmentally friendly alternatives. One promising solution is the development of edible films and coatings, which are made from edible materials and have biodegradable properties. Aloe vera has become an interesting material in the development of edible films and coatings due to its beneficial active compounds. This article conducts a review of the existing literature on the manufacture of aloe vera-based edible films and coatings. The literature review method was used to collect relevant information from various online sources. The results showed that aloe vera edible films and coatings have great potential in food packaging, because they are not only environmentally friendly and edible, but can also improve the quality and shelf life of food products. With the addition of additional ingredients such as gelatin, chitosan, starch, alginate, PVA, and CMC, the antimicrobial, antioxidant, and antifungal properties of the films and coatings can be enhanced. The use of aloe vera edible coatings has also been shown to affect the chemical, physical, and sensory properties of coated food products. In conclusion, the use of edible films and aloe vera coatings is promising as a sustainable alternative in food packaging, as they can increase protection of food products without compromising product safety or quality. Keywords : Aloe vera (L.) Burm.f.), edible films, edible coatings
VERIFIKASI METODE PENENTUAN KADAR AMONIA SEBAGAI NITROGEN (NH3-N) DALAM SAMPEL AIR BERSIH DENGAN METODE HACH 8155 DI PT BADAK NGL BONTANG Yusuf, Irfan Maulana; Pasaribu, Subur P.; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research about method verification for determination of ammonia levels as nitrogen (NH3-N) in clean water samples using the Hach 8155 method at PT Badak NGL Bontang has been done. Method verification was carried out by testing several verification parameters such as linearity tests, determining of instrumentation detection limits, detection limits of the method, quantification limits, repeatability, reproducibility and accuracy. The research results showed that the linearity test had good results with a correlation coefficient (R2) was 0.9992; instrumentation detection limit value was 0.01 mg/L; method detection limit value was 0.01 mg/L; quantification limit value was 0.03 mg/L; the repeatability value obtained from %RSD is less than 2/3 of the Horwitz CV; reproducibility value was 0.497 obtained from the Zscore value with acceptance requirements, namely 1.96 ≥ Zscore ≥ -1.96; and the accuracy value of the measured levels was 0.483 with a concentration range limit of 0.364 – 0.533 mg/L. The research results show that the Hach 8155 method can be used as a routine analysis method at PT. Badak NGL. Keywords : Method verification, ammonia, clean water, Hach 8155 method.
REVIEW ARTIKEL: KARAKTERISASI EDIBLE FILM DARI KARAGENAN RUMPUT LAUT (Eucheuma Cottoni/Kappaphycus alvarezii) Nur, Nana Septiana; Pasaribu, Subur P.; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Seaweed is a type of multicellular organism with fast growth. Seaweed is quite abundant and is in great demand in several fields, both industrial and pharmaceutical. There are 3 types of seaweed, including brown with polysaccharides such as alginate, fucoidan and laminarin. Green seaweed with polysaccharides such as ulvan. Red with polysaccharides such as agar and carrageenan. Carrageenan is a hydrocolloid of Kappaphycus alvarezii/Eucheuma cottonii which has been extracted with an alkaline solution or water. Carrageenan has the property of being able to form a stable gel, is edible, renewable and rich in fiber so it has the potential to be used as an edible film. Edible film is a layer that can be eaten and has a role as a barrier to moisture. Based on the literature, making edible film from seaweed carrageenan with a higher concentration of seaweed results in a decrease in the transmittance value and transparency level of the edible film. The addition of a higher concentration also produces edible film with a lower water content, namely 21.16%, and has a tendency for slower dissolution compared to lower seaweed concentrations. The higher the concentration of carrageenan used in making edible film, the higher its solubility, the stronger its tensile strength, the thicker and more resistant it is, and the lower the vapor transmission rate or the higher the ability to hold water. Keywords: Seaweed (Eucheuma cottonii), carrageenan, edible film
KORELASI NILAI INHERENT MOISTURE TERHADAP NILAI CALORIFIC VALUE STANDAR AMERICAN SOCIETY OF TESTING AND MATERIALS (ASTM) DI PT TRIYASA PIRSA UTAMA SAMARINDA Josephine, Josephine; Pasaribu, Subur P.; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Coal is one of the main fuel sources for electricity generation in Indonesia. Coal contains inherent moisture water content and chemical calorific value. The Inherent Moisture value in coal is one of the main characteristics of coal that determines the quality of the coal. The calorific value of coal was determined from the values ​​of Total Moisture, Ash Content and Total Sulfur which are the determining parameters for coal quality. The aim of this research is to determine the correlation between the Inherent Moisture value and the Calorific Value of coal with ASTM standards. This research was conducted at PT Triyasa Pirsa Utama Samarinda using 10 different coal samples to analyze the Inherent Moisture value and Calorific Value. Based on the data from the analysis and graphs, a correlation between the Inherent Moisture (IM) and Calorific Value (CV) values ​​is inversely proportional, where the higher the IM value, the lower the CV value in the coal sample. The factors that influence changes in IM and CV values ​​are climate, weather, coal storage time and coal grain size degradation. Keywords: Coal, Moisture, Calorific Value, ASTM Standard.
PEMANFAATAN RESIN Ca-ALGINAT TERMODIFIKASI DENGAN ETILENA DIAMINENA TETRAASETAT (EDTA) DALAM TAHAPAN PRAKONSENTRASI ION Mn(II) BERBASIS METODE KOLOM Sari, Rahma Juwita; Panggabean, Aman Sentosa; -, Erwin
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.982 KB)

Abstract

Research on modification of Ca-Alginate microcapsules with Ethylene Diamin Tetra Acetate (EDTA) and Utilization in stages pre concentration column Ion Pb based method has been done. Pre concentration method Pb metal ions is done by using the column or Off-Line method, the water sample is inserted into the column, in the elution using 1.5 M HCl, then eluat were collected and measured using Atomic Absorption Spectrophotometer. The optimum conditions in resin manufacture Ca-Alginate-EDTA is on the composition of CaCl2 1 M Na-alginate 1%, and 0.75% EDTA. The optimum conditions analytical performance of this resin microcapsules with the absorption of Pb most best at pH 8, retention capacity of 0.6546 mg / g resin, 1.5 M HCl eluent The concentration by volume Pb is 8 mL and 3 mL HCl eluen volume, analytical performance of this method good enough for Pb ion analysis is shown of the measurement value detection limit of 0.0469 mg / L level to able replicates expressed as a percentage coefficient of variance for 1:20%. this method can be applied to the analysis of metal ions Fe in water samples from the environment to the value of recoveries of> 95%, using techniques spike indicates that the sample matrix derived from Karang Mumus River and Well Water does not affect the measurement results and can be used by analysis of Pb in the sample water at trace levels. Keywords: Preconcentration, Resin Ca-Alginate-EDTA, Pb, Spectrophotometer
PEMBUATAN DAN KARAKTERISASI MEMBRAN ELEKTRODA SELEKTIF ION Cu(II) MENGGUNAKAN IONOFOR Na2S SEBAGAI SENSOR KIMIA Rosyada, Amrina; Arif, Moh. Syaiful; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 10 No 1 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i1.1418

Abstract

Preparation and characterization of Cu(II) ion selective electrode membranes based on polyvinyl chloride (PVC) using sodium sulfide (Na2S) as the ionophore has been done. The use of PVC polymer functions as a material that strengthens the properties of the membrane mixed with Na2S to form a homogeneous membrane and can reduce the risk of leaks in the membrane used. However, PVC has stiff properties, so a plasticizer in the form of DOP was needed to reduce intermolecular forces and make the membrane elastic. The preparation was carried out with the composition Na2S : PVC : DOP, namely 6 : 3 : 1. The membrane was doped with CuSO4 solution for 7 days and the Cu2+ ESI performance was measured to increase the optimal conductivity of the membrane, it is done by doping the membrane, namely by inserting 1 M Cu2+ dopant metal. The ESI Cu2+ performance results show a solution composition of 1:2 CuSO4:KNO3 and works well in the composition range 10-5 - 10-1 M, with a Nernst factor value of 28.9 mV/decade and a detection limit of 1.01×10-5 M. The response time of ESI Cu2+ was 10-60 seconds and can be used for 3 days. ESI Cu2+ works in the pH range 4-6 and the presence of interfering ions Cd2+, Zn2+, Cl-, NO3- and SO42- does not affect the performance of ESI Cu2+.
Co-Authors -, Yasrin Adha, Laila Sufina Adhi Surya Pranata Surya Pranata Adhi Surya Pranata Surya Pranata, Adhi Surya Pranata Surya Adhitya Rinaldi Akhmad Rifani Akkas, Erwin Ali Murtopo Alimuddin Alimuddin - Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alya Yuni Maulana Amrina Rosyada Anggun Ridha Avitri Ani Trisnawati Anwar, Adliah Arif, Moh. Syaiful Arifin Syam Surya arifin syam syam Az Zahra, Upi Fathimah Bagus Muliawan Bayu Iskandar Bohari - Bohari Bohari Bohari Bohari Bohari Yusuf Bohari Yusuf Buchari Buchari Buchari Buchari Budiono, May Cahaya, Tentriati Chairul Saleh Darmin - Darwin, Chepy Dirgarini Julia Nurlianta Subagyono Eka Apriska S Kusuma Erwin - Erwin Erwin Erwin Erwin Erwin Erwin Erwin Erwin Erzha, Nutfahryza Fadilah Ramadhani Farida Kristiana Farlianti, Resma Lita Fatimah Islamunisa Filus, Tio Fitriana, Mila Friscylia Friscylia Gaanty Pragas Maniam, Gaanty Pragas Hariati, Hariati Hariati, Hariati Harum Widyastuti Hening Ayu Marinda Hutagalung, Sandi Christopher Idris Mandang, Idris Irviansyah, Alfian Iskandar, Bayu Joni Rahman Josephine Josephine, Josephine Juntia Kirana Pratiwi Khasanah, Manja’a Kumalasari, Anisa Kurniasih, Ririn Feby Kusmiaty, Prilianda Leonardus Lewo Hayon Lianasari, Ika Yekti Lossi Hotmaida Simanjuntak Lumban Gaol Veronica Destiana M. Bachri Amran Manja’a Khasanah Margaretta D. R. N. S Marvin Horale Pasaribu May Budiono Mayang, Julia Agustin Menono, Fera Friskaneke Mila Fitriana Muhammad Asfian Nur Muhammad Bachri Amran Muhammad Rizky Muhammad Robiansyah Nanang Tri Widodo Nanang Tri Widodo Nauval Dwi Fadillah Nazaratun Thaiyibah Noor Hindryawati Noor Hindryawati, Noor Nur, Nana Septiana Nurhasanah Nurhasanah Oktavia, Dwina Putri Oktaviani, Reka pakasi, Resy Prayuda, Adif Putri, Amelia Putri, Rinda Anisyah RAHMAT GUNAWAN Rahmat Gunawan Rani Novia Ulya Rida Awliyani Rientha Septiana Rika anggraini Rina Rina Ristia Asri Fidayana Rita Hairani Rudi Kartika, Rudi Rumengan, Nur Khamillah Sadijah Achmad Saepudin Suwarsa Saibun Sitorus Saibun Sitorus Sandi Christopher Hutagalung Sari, Ermalia Lintang Sari, Ika Yekti Liana Sari, Rahma Juwita Septiana, Rientha Shintia Alifah R Soerja Koesnarpadi Soerja Koesnarpadi Subagyono, Dirgarini Julia Nurlianti Subur P Pasaribu Teguh Wirawan Teguh Wirawan, Teguh Tika Widyastuti Tio Filus Trisnawati, Ani Victoria, Stefanie Willem Hendrik G Wirdhaningsih Wirdhaningsih Yasser Arafat Yulianti Kartika Yulieta, Afifah Nur Yusuf, Irfan Maulana