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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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SINTESIS OKSIDA LOGAM AURIVILLIUS SrBi4Ti4O15 MENGGUNAKAN METODE HIDROTERMAL DAN PENENTUAN SIFAT FEROELEKTRIKNYA Edi Mikrianto; Ricky Kurniawan; Dwi Rasy Mujiyanti; Utami Irawati
Jurnal Sains dan Terapan Kimia Vol 8, No 1 (2014)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.69 KB) | DOI: 10.20527/jstk.v8i1.2131

Abstract

Salah satu material yang bersifat feroelektrik adalah oksida logam Aurivillius. Pada penelitian ini, dilakukan sintesis oksida logam Aurivillius SrBi4Ti4O15 menggunakan metode hidrotermal selama 72 jam, konsentrasi NaOH 3 M sebagai mineralizer, dan variasi suhu 200°C, 220°C, dan 240°C. Hasil sintesis dikarakterisasi dengan difraksi sinar-X dan didapatkan bahwa suhu sintesis 240°C menghasilkan senyawa berfasa tunggal dengan sistem kristal ortorombik, grup ruang A21am, dan parameter sel satuan a = 5,5396 Å, b = 5,5800 Å, c = 40,9734 Å. Senyawa ini memiliki tingkat kristalinitas lebih bagus dan yang lebih tinggi daripada oksida logam sejenis yang dihasilkan dengan metode reaksi kimia fasa padat. Sifat feroelektrik menunjukan nilai polarisasi remanen Pr(+) 35,10 Ccm-2, Pr(-) 24,10 Ccm-2. Kata kunci: sintesis, oksida logam, Aurivillius, hidrotermal 
Pelatihan Pembuatan Hand sanitizer Alami di SD Islam Creative Banjarbaru Utami Irawati; Dewi Umaningrum; Dwi Rasy Mujiyanti; Rizki Fitria
Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) Vol 2, No 3 (2023)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/ilung.v2i3.6381

Abstract

Coronavirus varian baru (Severe Acute Respiratory Syndrome Coronavirus 2/SARS-COV2) mulai muncul di dunia dan menyebar di Indonesia pada awal tahun 2020 dan penyakitnya lebih dikenal dengan nama Coronavirus Disease-2019 (COVID-19). Jumlah kasus yang tinggi menyebabkan pemerintah mengambil kebijakan penerapan protokol kesehatan 3M (memakai masker, menjaga jarak dan mencuci tangan). Penggunaan hand sanitizer menjadi alternatif pilihan untuk menjaga higienitas dan kebersihan pribadi. Hand sanitizer komersial yang beredar di pasaran sebagian besar mengandung alkohol karena kemampuannya membunuh mikroorganisme patogen. Sementara itu, banyak bahan alami yang memiliki sifat antiseptik dan dapat dimanfaatkan sebagai bahan pembuatan hand sanitizer. Sasaran dalam kegiatan pengabdian ini adalah siswa Sekolah Dasar (SD). Diharapkan dengan adanya pelatihan ini, siswa SD dapat mengembangkan keterampilan entrepreneurship dan membantu dalam mengolah bahan-bahan yang ada disekitar lingkungan menjadi lebih berguna, bahkan bernilai jual. Hal ini membuka peluang untuk memproduksi hand sanitizer alternatif dalam skala kecil atau skala rumah tangga. Maka dari itu diperlukan pelatihan pembuatan hand sanitizer dari bahan alami ini. Dalam pelaksanaannya, program pengabdian pada masyarakat ini dilakukan dengan beberapa tahapan, yaitu tahap persiapan, pelatihan secara daring dan praktek secara luring. Dalam pelatihan tersebut terdapat beberapa hasil positif diantaranya produk hand sanitizer alami yang dilengkapi dengan label kemasan dan label protokol kesehatan pada kotak tools kit serta pemahaman siswa mengenai cara pembuatan hand sanitizer alami.
Effect of hydrothermal time on the hydrochar characteristics of galam (Malaleuca leucadendra) bark and application tests as methylene blue adsorbent Sunardi Sunardi, Ph.D.; Risaldi Ridwan; Hanna Habibah; Desmalina Safitri; Utami Irawati
Jurnal Riset Industri Hasil Hutan Vol 14, No 2 (2022)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jrihh.v14i2.7964

Abstract

Production of galam wood produces bark waste that is disposed in around of the production site without processing. The use of galam bark waste is very necessary to reduce waste and its problems in the environment and optimize the potential of galam wood as a typical Kalimantan plant. In this research, modification of galam bark biomass (Malaleuca leucadendra) into hydrochar through a hydrothermal process with variations of hydrothermal time and its use for methylene blue adsorbent has been done. The hydrothermal process was carried out at the temperature of 200˚C for 3 hours, 6 hours, and 12 hours. The characterization of hydrochar substrate using FTIR (Fourier Transform Infrared Spectroscopy) showed the decrease in absorption intensity of 47% and a shift in several wavenumbers. The characterization using SEM (Scanning Electron Microscope) showed that there are morphological changes on the surface of the hydrochar become to more holes after the hydrothermal process. The optimum condition for adsorption occurred at pH 7 for 10 minutes. The adsorption capacity of methylene blue increased from 44.70 mg/g to 45.82, 46.17, and 46.90 mg/g after hydrothermal process. The results also showed that the adsorption followed the Freundlich isothrm which showed a tendency for multilayer interactions on the surface of the galam barks after the hydrothermal process.
Syntesis of Glutardehide Crosslinked Superporous Chitosan with Polyphynil Alcohol Addition for Peat Water Humic Acid Absorption Dahlena Ariyani; Uripto T Santoso; Radna Nurmasari; Utami Irawati; Iriansyah Iriansyah
Journal of Wetlands Environmental Management Vol 3, No 2 (2015): July-December
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2583.773 KB) | DOI: 10.20527/jwem.v3i2.19

Abstract

This research aims to synthezise the superporous adsorbent from chitosan using glutaraldehyde as a cross linker, NaHCO3 as a porogen, and polyvinyl alcohol (PVA) as a reinforcing agent. Generally, the reaction of adsorbent synthesis was carried out through four steps: (1) the addition of PVA to the chitosan solution, (2) the addition of porogen, (3) the crosslinking of chitosan, and (4) the releasing of porogen. The obtained adsorbents were characterized by Fourier Transform Infra Red (FTIR) Spectroscopy, photograph of Digital Microscope (DM), and Scanning Electron Microscopy (SEM) to measure the porosity. The adsorbent was then be applied to adsorb of HA for adsorption capacity determination. The results showed that the addition of PVA and porogen during adsorbent synthesis has produced adsorbent with more compact and flexible physical properties and greater porosity. The adsorption test showed that the adsorption capacity of KPG is 33.07 mg/g. However, if the amount of used adsorbent is larger (based on the chitosan mass 1 g), the capacity adsorption of KPG is 141.74 mg/g. The initial concentration of HA contained in peat water was 45.64 mg/L, KPG can adsorb of HA as much as 95%.
Adsorption of Linear Alkylbenzene Sulfonate (LAS) using Moringa oleifera Seeds Manurung, Tety Wahyuningih; Ningsih, Rima Oktavia; Irawati, Utami
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.62253

Abstract

One of the main components in detergent is Linear Alkylbenzene Sulfonate (LAS), an anionic surfactant. In the aquatic environment, LAS has the potential to cause pollution and cannot be decomposed under anaerobic conditions (no air), so it is necessary to study processing methods that can reduce the concentration of LAS in the waters. In this research, a study of LAS adsorption by Moringa seeds was carried out. The parameters studied were the influence of contact time and solution pH. A study on the isothermic adsorption of LAS on Moringa seeds using the Freundlich and Langmuir approach was also carried out. The concentration of LAS was determined by the Methylene Blue Active Surfactant (MBAS) method using a UV-Vis spectrophotometer. The results showed that adsorption reached equilibrium after 90 minutes. A pH value of 5 is the optimum pH value for the adsorption of LAS by Moringa seeds. Using the Langmuir approach, the LAS adsorption capacity of Moringa seeds was calculated to be 400 mg/g.
Penggunaan slow sand filter dalam pengolahan air gambut untuk menurunkan turbiditas dan kandungan senyawa organik Utami Irawati; Nugi Maulana; Tety Wahyuningsih Manurung
Jurnal Pengelolaan Lingkungan Berkelanjutan (Journal of Environmental Sustainability Management) JPLB, Vol 7, No 2 (2023)
Publisher : Badan Kerjasama Pusat Studi Lingkungan (BKPSL) se-Indonesia bekerjasama dengan Pusat Penelitian Lingkungan Hidup IPB (PPLH-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36813/jplb.7.2.135-147

Abstract

Slow Sand Filter (SSF) is a simple technology to improve water quality. In this research, the effect of retention time and filter age towards the effectivity of SSF in decreasing turbidity and organic content in peat water was investigated. Another filter using commercial activated carbon was also used to treat the peat water samples as a comparison. The results of this study shows that retention time affects the effectivity of SSF and activated carbon in decreasing turbidity and organic contents. Activated carbon needed a lower retention time to give an optimal turbidity decrease compared to SSF. While activated carbon needed 2 hours of retention time to give an optimum result in decreasing turbidity, SSF needed at least 3 hours of retention time. Retention time appeared to also significantly affect the decrease in organic content. This is probably due to the life cycle of the bacteria living in the SSF and the time it took to have a sorption equilibrium in the activated carbon filter. The age of the filter also signifcantly affects the performance of SSF, in which older filter gave better results in removing organic content in peat water
IMPLEMENTASI MODUL PENCEMARAN LINGKUNGAN TERINTEGRASI STEAM-PjBL UNTUK MENINGKATKAN KEMAMPUAN ENGINEERING DESIGN PROCESS PESERTA DIDIK Hamidah, Hamidah; Sholahuddin, Arif; Irawati, Utami
Journal of Banua Science Education Vol. 5 No. 2 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jbse.v5i2.338

Abstract

Engineering design process (EDP) penting bagi lulusan agar berperan dalam perkembangan ilmu pengetahuan, teknologi, dan masyarakat. Namun, kemampuan ini belum berkembang baik di kalangan peserta didik. Penelitian ini bertujuan mengembangkan modul IPA berbasis PjBL-STEAM untuk meningkatkan kemampuan EDP peserta didik, dilihat dari validitas, kepraktisan, dan keefektifan modul. Penelitian ini menggunakan metode Design Research model ADDIE untuk menghasilkan modul IPA berbasis PjBL-STEAM yang valid, praktis, dan efektif untuk meningkatkan kemampuan EDP peserta didik. Penelitian dilakukan di SMP Negeri 5 Alalak, dengan validitas modul dinilai oleh 3 ahli dan praktisi, kepraktisan berdasarkan keterlaksanaan modul dan angket respon, dan keefektifan dari kemampuan EDP peserta didik. Uji coba produk meliputi uji kelompok kecil (8 peserta didik) dan uji lapangan (50 peserta didik) dari dua kelas berbeda. Data dianalisis secara deskriptif menggunakan n-gain dan uji Mann-Whitney. Hasil penelitian menunjukkan: 1) modul pembelajaran sangat valid dengan skor 87,19; 2) kepraktisan di SMP Negeri 5 Alalak sangat tinggi dengan skor 86,36 dan angket respon 81,79; 3) efektivitas dengan n-gain di SMP Negeri 5 Alalak pada aspek EDP sebesar 0.58 (sedang) dan uji independent t-test 0,652 menunjukkan tidak ada perbedaan signifikan di kedua kelas. Berdasarkan hasil ini, modul IPA berbasis PjBL-STEAM dinyatakan layak digunakan untuk meningkatkan kemampuan EDP peserta didik.
Sintesis komposit berbasis styrofoam dan kulit kayu galam sebagai adsorben besi pada limbah cair pertambangan intan Nugravita, Annisa Nurfadilla; Dirgahayu, Daniel; Fitriani, Rizky Aulia; Gea, Temani; Irawati, Utami
Jurnal Pengelolaan Lingkungan Berkelanjutan (Journal of Environmental Sustainability Management) JPLB, Vol 9, No 1 (2025)
Publisher : Badan Kerjasama Pusat Studi Lingkungan (BKPSL) se-Indonesia bekerjasama dengan Pusat Penelitian Lingkungan Hidup IPB (PPLH-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36813/jplb.9.1.65-78

Abstract

South Kalimantan Province is well known for its abundant diamond production. However, diamond mining activities leave excavation pits filled with water that cannot be utilized due to high concentrations of heavy metals. This study aims to develop an effective method for synthesizing a composite from styrofoam-derived polystyrene and cellulose extracted from galam wood (Melaleuca cajuputi) bark as an adsorbent, characterize the obtained composite, and evaluate its adsorption capability compared to commercially activated carbon for diamond mining wastewater treatment. Cellulose was isolated from galam wood bark, while polystyrene was obtained from styrofoam. The isolated materials were then used for composite synthesis. The adsorption process was examined by analyzing the effects of contact time and adsorbent mass. The optimal masses for the composite, activated carbon, and galam wood bark powder were found to be 1 g, 7.5 g, and 5 g, respectively. After treatment, the final turbidity levels using these adsorbents were 1.82, 486, and 232 NTU, respectively, compared to an initial turbidity of 1110 NTU. Atomic Absorption Spectroscopy (AAS) results indicated that the PSS-cellulose composite reduced iron (Fe) concentration from 38.30 mg/L to 24.12 mg/L.
Potential of Moringa oleifera Seeds as a Natural Coagulant for Turbidity and LAS Removal from Detergent Wastewater Arfan, Aulia Rhamdani; Irawati, Utami; Indah, Rahma; Hikmah, Nawwal
Jurnal Kimia Fullerene Vol 10 No 2 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i2.748

Abstract

Detergent wastewater contains high levels of surfactants, particularly Linear Alkylbenzene Sulfonate (LAS), which are persistent and harmful to aquatic ecosystems. This study evaluated the potential of Moringa oleifera seed extract (MOS) as a natural coagulant for detergent wastewater, compared with alum as a synthetic coagulant. The coagulation process was carried out using the jar test method at varying dosages (100–1500 mg/L) and pH levels (4–9). Turbidity was measured following SNI 06-6989.25-2005, while LAS concentration was analysed using the Methylene Blue Active Substances (MBAS) method. Results showed that MOS achieved optimum performance at 1500 mg/L and pH 4, with a turbidity removal efficiency of 94.96% (final turbidity 4.76 NTU) and LAS removal efficiency of 88.94% (final concentration 0.58 mg/L). In comparison, alum reached its optimum at 200 mg/L and pH 6, with lower LAS removal efficiency. Validation with wastewater samples stored for 1–3 nights indicated that MOS maintained consistent performance, while alum showed fluctuating results. An in-silico docking study further confirmed the molecular interaction between LAS and MOS proteins, with a binding energy of –4.8 kcal/mol, supporting the observed experimental results. These findings demonstrate that MOS is a promising, low-cost, and environmentally friendly alternative to alum for detergent wastewater treatment.
Edukasi Hemat Energi melalui Instagram untuk Peningkatan Kesadaran di Kalangan Kawula Muda Nainggolan, Yuni; Natania Gracia, Amanda; Rahmi Wulandari, Oktavia; Horale Pasaribu, Marvin; Wahyuningsih Manurung, Tety; Alfanaar, Rokiy; Irawati, Utami; Ryu Pratiwi, Djihan; Ariefin, Mokhamat
NAWASENA : JOURNAL OF COMMUNITY SERVICE Vol. 2 No. 01 (2024): Vol 02 No 1 2024
Publisher : NAWASENA : JOURNAL OF COMMUNITY SERVICE

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Krisis energi global dan ketergantungan pada sumber energi fosil menimbulkan ancaman serius bagi lingkungan dan kesehatan manusia. Program edukasi hemat energi melalui Instagram bertujuan untuk meningkatkan kesadaran dan mengubah perilaku konsumsi energi di kalangan generasi muda. Video kampanye yang mencakup lima poin utama - ketergantungan energi tidak terbarukan, dampak negatif batu bara dan minyak bumi, solusi energi terbarukan, tips praktis hemat energi, dan pola hidup hemat energi - diunggah melalui fitur Reels. Hasil menunjukkan video ditonton 5.175 kali, menerima 301 likes, dan mendapatkan 72 komentar, dengan lebih dari 90% komentar berasal dari kawula muda. Analisis komentar mengungkapkan bahwa mayoritas tanggapan adalah positif, menunjukkan bahwa pesan kampanye berhasil mencapai target audiens utama. Generasi muda merasa terinspirasi dan terdorong untuk mengadopsi praktik hemat energi dalam kehidupan sehari-hari mereka. Kampanye ini tidak hanya meningkatkan kesadaran tetapi juga mendorong tindakan nyata, menunjukkan bahwa media sosial efektif sebagai alat edukasi dan mendukung tujuan pembangunan berkelanjutan serta ekonomi hijau. Hasil ini mempertegas pentingnya strategi komunikasi yang inovatif dalam upaya mengatasi krisis energi global.
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