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INDONESIA
PROSIDING SEMINAR KIMIA
Published by Universitas Mulawarman
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
Arjuna Subject : -
Articles 502 Documents
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ANALISIS KOMPOSISI KIMIA PRODUK PIROLISIS LAMBAT OFF-GRADE RUBBER PADA SUHU 300 °C Agustina Tri Putri Sitinjak; RR Dirgarini Julia Nurlianti Subagyono; Veliyana Londong Allo; Ari Susandy Sanjaya
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

This study was conducted to determine the yield and chemical composition of slow pyrolysis products of off-grade rubber at 300 °C. From the pyrolysis experiments, the yield of bio-oil was 28.25%. Analysis with Gas Chromatography-Mass Spectrometry showed that the bio-oil from off-grade rubber was mainly composed of γ-Elemene, 1H-Benzocycloheptene, octahydro-3,5,5-trimethyl-9-methylene-, (4aS-cis)-, 1,5-Cycloundecadiene, 8,8-dimethyl-9-methylene-, Geranyllinalool Isomer B, and Geranylgeraniol.   Keywords: Slow Pyrolysis, Off-grade Rubber, bio-oil, GC-MS
APLIKASI METAL-ORGANIC FRAMEWORKS (MOF) BERBASIS LOGAM Zn DALAM DEGRADASI FOTOKATALITIK POLUTAN ORGANIK Ananda Fitra Yuda; Husna Syaima
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Photocatalytic degradation is a widely studied method for reducing the concentration of organic pollutants. This technique has proven effective in breaking down various organic compounds, including dyes, pharmaceuticals, and pesticides. Metal-Organic Frameworks (MOFs) represent a promising class of materials for photocatalytic degradation due to their favorable catalytic properties, such as high porosity and large surface area. Additionally, MOFs offer structural tunability, allowing their properties to be tailored for specific applications. This review discusses the structural characteristics, photocatalytic mechanisms, synthesis strategies, current applications, and the future prospects and challenges of Zn-based MOFs in the photocatalytic degradation of organic pollutants.   Keywords: Metal-Organic Frameworks, Zinc, Photocatalytic Degradation
STUDI PIROLISIS OFF-GRADE RUBBER DENGAN KATALIS Ni/Ga-SBA-15 MENGGUNAKAN ANALISIS TERMOGRAVIMETRI PADA LAJU PEMANASAN 10°C/MENIT Anisa Anggraeni; R.R Dirgarini Julia Nurlianti Subagyono; Mohd. Asyraf Kassim
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

A study of off-grade rubber pyrolysis with Ni/Ga-SBA-15 catalyst using thermogravimetric analysis has been conducted. This study aims to determine the thermal decomposition process of off-grade rubber pyrolysis with Ni/Ga-SBA-15 catalyst using thermogravimetric analysis at a heating rate of 10°C/min. The pyrolysis decomposition temperature of off-grade rubber was divided into three stages, namely water evaporation at a temperature of ≤147°C, active pyrolysis at a temperature of ±147-454°C, and passive pyrolysis at a temperature of ≥454°C. Keywords: Thermogravimetric analysis, Ni/Ga-SBA-15 catalyst, Off-grade rubber
KAJIAN LITERATUR: PERAN BIOAKTIVITAS SENYAWA ALKALOID SEBAGAI ANTIOKSIDAN DAN PENGARUH TOKSISITAS TERHADAP ARTEMIA SALINA A. Febriani Putri Paramitha; Tiara Maharani; Rian Erlangga Syahputra; Alvina Meutia Anzalna; Ari Putra Wijaya Simangunsong; Usman
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Alkaloids are bioactive compounds that are widely found in plants or medicinal plants, and are known to have various pharmacological benefits, including antioxidant properties. The role of alkaloids as antioxidants to protect Artemia salina from oxidative damage. Antioxidant compounds, including alkaloids, work by capturing and neutralizing free radicals that can cause oxidative stress in organism cells. However, the potential toxicity of alkaloids in aquatic organisms, such as Artemia salina, also needs to be studied to understand the possible side effects, because these antioxidant properties function to protect cells from damage caused by free radicals. This study aims to determine the bioactivity of alkaloid compounds against plants as antioxidants and toxicity to Artemia salina. The method used in this study is SLR (Systematic Literature Review) which collects and analyzes various sources of literature related to alkaloid bioactivity compounds against plants as antioxidants and toxicity to Artemia salina. The results showed that alkaloids have significant antioxidant activity, which is indicated by their ability to neutralize free radicals. However, toxicity tests also showed that certain concentrations had significant adverse effects on the survival of Artemia salina. Keywords: Alkaloids, Antioxidants, Toxicity, Artemia salina.
PENYERAPAN LOGAM BERAT SECARA BIOKIMIAWI OLEH BAKTERI GRAM POSITIF DAN GRAM NEGATIF: A MINI RIVIEW Dilo Jhosea Luciano Eduardo; Rudi Kartika; Ripaldy Apriansya; Shaparuddin Nur Arifullah; Muhammad Adhitya Rizkirullah
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Scenedesmus sp. is a freshwater green alga that functions as an ionic biosorbent and can also be a bioindicator for water contaminated with hexavalent chromium Cr(VI) ion. This study aimed to observe the growth of Scenedesmus sp. exposed to Cr(VI) ion at various concentrations and analyze the remaining Cr(VI) ion that did not undergo biosorption by microalgae. This research was conducted on Scenedesmus sp. microalgae growth media using five bioreactors, each with a different Cr(VI) ion exposure concentration. The remaining ion in the growth media was analyzed for its concentration with an ultraviolet-visible spectrophotometer at time variations with an interval of two days. Maximum biosorption with exposure to Cr(VI) occurred at a concentration of 1.0 ppm on day 12 of 99.93%. At concentrations of 5.0 ppm and 7.0 ppm, microalgae growth was very poor, indicating the medium was toxic. Keywords: Biosorption, Hexavalent Chromium, Scenedesmus sp, Toxicity
KAJIAN LITERATUR: BIOAKTIVITAS SAPONIN SEBAGAI ANTI-INFLAMMATORY Elis Kaiye; Rizka Amalia Putri; Egi Syahrah Anggraeni; Mely Nor Asiyah; Usman
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Saponin adalah senyawa glikosida yang ditemukan dalam berbagai tanaman dalam bentuk glikosida triterpenoid dan glikosida steroid yang dikenal memiliki aktivitas biologis yang beragam, termasuk sebagai agen anti-inflammatory. Kajian literatur ini bertujuan untuk mengkaji bioaktivitas saponin, terutama sebagai anti-inflammatory atau antiinflamasi. Metode yang digunakan dalam kajian ini adalah narrative literature review yang mengumpulkan dan menganalisis berbagai sumber literatur terkait bioaktivitas saponin sebagai anti-inflammatory atau antiinflamasi. Saponin dapat menghambat biosintesis mediator inflamasi dan meningkatkan stabilitas membran sel, yang berkontribusi pada efek antiinflamasi. Dalam membuktikan aktivitas saponin sebagai antiinflamasi, saponin akan diuji in vivo dengan model hewan dan uji in vitro menggunakan kultur sel. Hasil menunjukkan bahwa saponin efektif dalam mengurangi edema dan kerusakan jaringan yang diinduksi inflamasi. Kajian ini menekankan pentingnya penelitian lebih lanjut untuk mengidentifikasi sumber saponin yang paling efektif dan potensi penggunaannya dalam terapi inflamasi. Kata Kunci: Saponin, Antiinflamasi, Bioaktivitas Saponin
PEMANFAATAN ARANG AKTIF BONGGOL JAGUNG (Zea mays) SEBAGAI ADSORBEN RADIKAL ALKIL PEROKSIDA PADA MINYAK JELANTAH : STUDI PENURUNAN BILANGAN PEROKSIDA Hasriani; Saibun Sitorus; Irfan Ashari Hiyahara
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Used cooking oil is known to contain lipids resulting from the oxidation process at high heating temperatures. The oxidation process in cooking oil continuously causes the formation of alkyl peroxide radicals. Used cooking oil is at risk of disrupting water and soil ecosystems if disposed of into the environment without further management. In this study, a characterization test of corn cob activated charcoal was carried out based on SNI 06-3730-1995, characterization using the Surface Area Analyzer (SAA) instrument and a test of the peroxide number in used cooking oil. The results of the activated charcoal characterization test showed that it still met the requirements of SNI 06-3730-1995 and showed an increase in surface area of ​​109,705 m2/g in the SAA test. In the control before the adsorption process using corn cob activated charcoal, the peroxide number was 30 mek O2/kg. In the refining process of used cooking oil, there was a decrease in the peroxide number. The optimum decrease in the peroxide number was found at a charcoal mass of 4 g with a contact time of 45 minutes. The peroxide value obtained was 8 mek O2/kg, which was a decrease of around 73.33% from the used cooking oil before refining. Keywords: Activated Charcoal, Alkyl Peroxide Radicals, Surface Area Analyzer, Used Cooking Oil, Zea Mays.
PEMBUATAN PUPUK ORGANIK CAIR DARI SAMPAH RUMAH TANGGA YANG DIAPLIKASIKAN PADA TANAMAN OBAT KELUARGA DI KELURAHAN MUARA JAWA TENGAH, KUTAI KARTANEGARA Imam Rohadi; M. Rizky Wardani; Nila Puspita Sari; Resya Winda Alya Khalisa; Gilang Yuda Pratama
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Waste management remains a critical issue in Muara Jawa Tengah Village. Household activities generate both organic and inorganic waste. However, the organic waste produced in the area is still underutilized and often contributes to environmental pollution. This activity aimed to convert household organic waste into liquid organic fertilizer (LOF), which can be applied to family medicinal plants (TOGA), thereby enhancing its utility and environmental value. The method implemented involved the production of LOF through the fermentation of household organic waste using effective microorganisms (EM4). The resulting LOF was a yellowish-brown liquid with a characteristic fermentation aroma. The presence of this aroma indicates successful anaerobic fermentation, wherein organic compounds such as carbohydrates, proteins, and lipids were decomposed into simpler compounds. These compounds are rich in essential macronutrients (N, P, and K) as well as various beneficial micronutrients. These nutrients play a significant role in supporting plant growth and development. Based on the findings, it can be concluded that LOF was successfully produced from household organic waste with the aid of EM4 and was effectively applied to TOGA in the Muara Jawa Tengah Village. Keywords: Family Medicinal Plants, Liquid Organic Fertilizer, Organic Waste
FORMULASI DAN EVALUASI GRANUL EKSTRAK ETANOL RIMPANG KUNYIT (Curcuma longa L.) DENGAN METODE GRANULASI BASAH Karsani Egalisa; Angga Cipta Narsa; Lisna Meylina
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Turmeric Rhizome (Curcuma longa L.) is a plant from the Zingiberaceae family that is commonly used as a food coloring and fragrance. Turmeric rhizome extract which has the chemical content of turmeric, including curcuminoid compounds, provides benefits as a medicine for body health. This study aims to develop a granule preparation containing turmeric rhizome extract (Curcuma longa L.), determine the physical properties of the resulting granules and determine the level of panelist preference for the turmeric rhizome extract granule preparation. Granules are made using the wet granulation method, the mass of the resulting granules is then evaluated with several tests such as: organoleptic test, flow rate test, angle of repose test, density and compressibility test, water content test, and granule size distribution test. The resulting granules have a slight turmeric odor and a yellowish color from the extract and are in the form of coarse granules. The turmeric rhizome extract formula meets the requirements for flow rate, angle of repose, compressibility, water content, but for the granule size distribution test it does not meet the requirements. Turmeric rhizome extract was formulated into a granular preparation with the results of the flow rate test of 17.85 g/second, angle of repose of 17.21º, compressibility index value of 13.2%, water content of 3.63%, particle size distribution value produced a percentage of fines of 38.18% indicating a percentage of fines that did not meet the requirements. And the level of panelists' preference for the preparation of turmeric rhizome extract granules can be accepted well. Keywords: Turmeric Rhizome, Wet Granulation, Evaluation of Granular Preparations.
PEMBUATAN DAN PEMANFAATAN PUPUK ORGANIK CAIR (POC) DARI SAMPAH ORGANIK RUMAH TANGGA DI KELURAHAN TAMA POLE, MUARA JAWA, KUTAI KARTANEGARA M. Rizky Wardani; Imam Rohadi; Maria Angelina Permata
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Waste management remains a persistent challenge in the Tama Pole Village. One of the initiatives to address this issue is by utilizing organic waste to produce liquid organic fertilizer (LOF). This activity aimed to transform household organic waste into LOF and apply it in the cultivation of family medicinal plants (TOGA). The method used was the production of LOF from household organic waste through a fermentation process assisted by Effective Microorganisms 4 (EM4). The microorganisms in EM4 are fermentative microbes that degrade mocromolecular compounds (carbohydrates, lipids, and proteins) in organic waste into smaller molecule compounds that can be easily absorbed by plants as nutrients. The result of the production of LOF was obtained are in the form of a yellowish-brown liquid with a characteristic fermentation aroma. This indicates that the macromolecular compounds in the organic waste has been decomposed into simpler compounds such as sugars, alcohols, fatty acids, amino acids, simple corboxylic acids, and inorganic ions, wich are rich in soil nutrients (N, P, K, and other micro nutrients). Based on these results, it can be concluded that LOF from household organic waste was successfully produced and applied in the cultivation of TOGA. Keywords: Family Medicinal Plants, Health, Liquid Organic Fertilizer, Organic Waste, Soil Nutrients.

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