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All Journal Jurnal Fisika Unand Jurnal Kimia Riset JURNAL MUQODDIMAH : Jurnal Ilmu Sosial, Politik dan Hummaniora Walisongo Journal of Chemistry Journal of Appropriate Technology for Community Services Jurnal Agrotropika Jurnal Abdimas Kartika Wijayakusuma Jurnal Kaharati Journal of Peat Science and Innovation (JPSI) Bohr: Jurnal Cendekia Kimia NAWASENA: Journal of Community Service
Siti Unvaresi Misonia Beladona
Universitas Palangka Raya
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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A Review: Development of Photocatalyst Materials and Its Performance for Humic Acid Removal in Peatwater Siti Unvaresi Misonia Beladona; Riandy Putra; Rokiy Alfanaar; Miranti Maya Sylvani; Elda Alyatikah; Riaa Safitri; Indri Susanti; Rendy Muhamad Iqbal
Journal of Peat Science and Innovation Vol. 1 No. 1 (2022): Journal of Peat Science and Innovation: June 2022
Publisher : Center for Development of Science, Technology and Peatland Innovation (PPIIG), University of Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (758.565 KB) | DOI: 10.59032/jpsi.v1i1.5380

Abstract

Peat is a wetland region in Indonesia with a very high water storage capacity. However, the amount of humic compounds obtained from the accumulation of organic substances in peat makes the water unable to be used for daily purposes. Peat water treatment with several methods has been carried out, such as coagulation, electrocoagulation, flocculation, and filtration. However, the result of clumping or filtering in such a way raises new environmental problems. One method which effective and efficient used in peat water treatment is photocatalytic. Several materials based-semiconductor was developed as a photocatalyst, another modification of photocatalyst is combining the adsorbent as a porous supporting photocatalyst which can improve its performance.
Chitosan/Rice Husk-Derived Silica Mixed Matrix Membrane as Potential Separator for Peatwater Purification Siti Unvaresi Misonia Beladona; Artha Karunia Gresiana Siregar; Midun Efendi Patar Sihombing; Fakhrotun Nisa; Rendy Muhamad Iqbal
Journal of Peat Science and Innovation Vol. 2 No. 1 (2023): Journal of Peat Science and Innovation: June 2023
Publisher : Center for Development of Science, Technology and Peatland Innovation (PPIIG), University of Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59032/jpsi.v2i1.10686

Abstract

Indonesia has the largest distribution of peatlands worldwide and is spread over Sumatra, Kalimantan, and Papua islands. Peatland is one of the land resources with a hydrological function and can store water in the form of peatwater. Peatwater is brownish-red due to high dissolved organic matter, especially in the form of humic acid and its derivatives, high organic matter content, low pH, and low cation content. Peatwater is classified as polluted water, unsuitable for consumption, and cannot be used directly as drinking, bathing, or washing water. The Mixed Matrix Membrane Fabrication method is expected to be used for peatwater purification by adding silica filler from rice husk ash. Rice husk has a high silica filler content of >90%. The higher the silica level, the better the material absorbs harmful chemical compounds in peatwater, one of which is humic acid.
Rice Husk Ash: A Promising Heavy Metal Adsorbent For Wastewater Treatment Kumalasari, Meiyanti Ratna; Beladona, Siti Unvaresi Misonia; Gracia, Amanda Natania; Sugiyani, Tina; Wulandari, Oktavia Rahmi; Imelya, Marsya; Syaima, Husna; Hanif, Qonita Awliya
Walisongo Journal of Chemistry Vol 7, No 1 (2024): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v7i1.18852

Abstract

The primary polluter of the environment is liquid waste. Silica is one substance that can be utilized to minimize water pollution. Silica can be produced from agricultural biomass waste, such as rice husk ash. This study investigated the preparation of rice husk ash and the optimal synthesis method for producing bio-silica. A literature review of studies on rice husk ash, heavy metals, and adsorbents was conducted. The findings indicated that boiling rice husk at 800°C and washing with HCl produced high-purity silica. XRD (X-ray diffraction), FT-IR (Fourier transform infrared) spectrophotometers, and ED-XRF (Energy Dispersive X-ray fluorescence) were employed to characterize the rice husk ash. The precipitation, sol-gel, acidification, and hydrothermal methods were compared for bio-silica synthesis. The synthesized bio-silica can be used as a heavy metal absorbent for various metal ions, including Pb2+, Zn2+, Mn2+, Cu2+, As3+, As5+, and Cd2+.
SURFACE MODIFICATION OF FLY ASH FROM ASAM-ASAM COAL POWER PLANT USING STEARIC ACID AS HYDROPHOBIC INORGANIC MATERIAL Manurung, Tety Wahyuningsih; Beladona, Siti Unvaresi Misonia; Hakim, Muh. Supwatul; Tesalonika, Lidya; Al-Hadi, Risfa Aliya; Iqbal, Rendy Muhamad
Jurnal Kimia Riset Vol. 9 No. 1 (2024): June
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i1.57370

Abstract

Abundant coal reserves make this material a substitute fuel choice, especially for industry. The use of coal carries a high risk due to incomplete combustion and produces fly ash products. Fly ash cause pollution and health risks as well as environmental contamination when they are released, deposited, or leached into the ecosystem over short or long periods of time. The high content of silica and alumina in fly ash can be utilized and modified into new materials with added value. This research aims to modify the surface of fly ash using stearic acid as a hydrophobic inorganic material. Fly ash from Asam-asam Coal Power Plant was characterized by using XRD and modified by immersing in stearic acid (2,4,6, and 8%) and 98% ethanol. The result showed that the contact angle increases when fly ash is modified on the surface using stearic acid. The contact angle increases with increasing stearic acid concentration. The highest contact angle was obtained at a stearic acid concentration of 8%, and the lowest at 2% was about 112.9 and 102.2, respectively. The fly ash composition was primarily silica and alumina, which were crystalline, as confirmed by XRD. These findings provide several aspects of fly ash and its potential as a candidate material for environmental remediation and waste management.
Implementasi Pembelajaran Kimia Secara Eksperimental Menggunakan Aplikasi Virtual Lab “Chemcollective” Putra, Riandy; Pratika, Remi Ayu; Beladona, Siti Unvaresi Misonia; Kumalasari, Meiyanti Ratna
Jurnal Abdimas Kartika Wijayakusuma Vol 5 No 2 (2024): Jurnal Abdimas Kartika Wijayakusuma
Publisher : LPPM Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jakw.v5i2.424

Abstract

Laboratorium virtual memiliki peran krusial sebagai sarana yang dapat mendukung dan mengantisipasi keterbatasan yang mungkin terjadi dalam laboratorium fisik. Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan pemahaman dan keterampilan praktis siswa dalam pelajaran praktikum IPA, khususnya mata pelajaran kimia dengan menerapkan program virtual komputer Authoring Tool Chemcollective. Hal ini merupakan upaya alternatif untuk mengatasi kendala dalam menggunakan laboratorium di sekolah. Peserta pelatihan melibatkan siswa kelas XI-1 IPA dari SMA Negeri 4 Palangka Raya. Metode yang diterapkan dalam pelatihan mencakup demonstrasi, praktik langsung, dan pendampingan. Dampak positif dari kegiatan ini mencakup peningkatan pengetahuan dan keterampilan siswa terkait metode praktikum kimia berbasis Teknologi Informasi dan Komunikasi (TIK). Siswa menunjukkan kemahiran dalam mengaplikasikan simulasi yang ditawarkan, bahkan menunjukkan minat besar untuk mencoba virtual lab sains lainnya. Berdasarkan hasil pre-test, sekitar 12% (3 dari 25 siswa) mengalami proses pembelajaran kimia melalui penggunaan virtual lab. Namun, nilai post-test menunjukkan bahwa 88% siswa menyatakan pembelajaran kimia menjadi lebih mudah dipahami ketika menggunakan aplikasi virtual lab chemcollective. Pelatihan ini dianggap sangat bermanfaat karena membantu siswa mengatasi hambatan dalam memahami konsep-konsep IPA yang memerlukan praktikum, terutama mengingat keterbatasan alat dan bahan kimia di laboratorium konvensional.
Identifikasi Dinamika Kelompok Usaha Pengrajin Purun Nusa Sehati di Desa Tumbang Nusa Kabupaten Pulang Pisau Kalimantan Tengah Rafsanjani, Muhamad Arief; Adiwijaya, Saputra; Misonia B, Siti Unvaresi; Kumalasari, Meiyanti Ratna
Jurnal Ilmiah Muqoddimah: Jurnal Ilmu Sosial, Politik dan Hummaniora Vol 8, No 4 (2024): November 2024
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jim.v8i4.2024.1936-1941

Abstract

UMKM saat ini mengalami tantangan tersendiri dalam pengembangan unit usahanya, terlebih yang berbasis pada unit usaha bersama. Salah satu UMKM yang mengalami banya dinamika adalah TK – PPEG (Tim Kerja Perlindungan dan Pengelolaan Ekosistem Gambut) Nusa Sehati di Desa Tumbang Nusa, Kabupaten Pulang Pisau, Kalimantan Tengah. Kelompok Nusa Sehati merupakan kelompok usaha bersama berbasis pada produk kerajinan purun. Kajian pada artikel ini, dengan menggunakan Metode Penelitian Kualitatif, mencoba untuk melihat dinamika tantangan persoalan kelompok usaha bersama tersebut. Terdapat tiga persoalan dari kelompok usaha ini, pertama terkait proses produksi dari kerajinan purun yang masih menggunakan matahari. Kedua monotonnya hasil produk terutama dalam pewarnaan, dan terakhir terkait pemasaran dan promosi produk yang dihasilkan.Kata kunci: Digital Marketing, Purun, Produksi,
Pengaruh Pemberian Porasi Janjang Kosong dan Dolomit terhadap Pertumbuhan dan Hasil Tanaman Bayam Merah Salampak, Salampak; Sustiyah, Sustiyah; Anwar, Moch; Beladona, Siti Unvaresi Misonia; Hartoko, Galih; Wahyuningtyas, Meylinda Dwi
JURNAL AGROTROPIKA Vol 23, No 2 (2024): Jurnal Agrotropika Vol 23 No 2, Oktober 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i2.9190

Abstract

The utilization of peat soil as a planting medium is still faced with several problems, especially in terms of the chemical characteristics of peat soil. Therefore, there is a need for treatment to improve these problems, one of which is by using the poration of palm oil empty fruit bunches and dolomite. This research aims to determine the effect of providing a technology package of empty fruit bunch and dolomite poration doses on the growth and yield of red spinach plants. The research was carried out at the Greenhouse Jalan G. Obos 24, for 3 months (September-November 2023). The research was carried out using a survey method and experimental tests in polybags, using the RAL method with 9 treatment technology packages, namely: 1) soil without treatment (control), 2) Soil + empty fruit bunches poration 2.5 tons ha-1 + dolomite 2 tons ha-1, 3) Soil + 2.5 tons ha-1 of empty fruit bunches poration + 4 tons of ha-1 dolomite, 4) Soil + 5 tons of ha-1 of empty fruit bunches poration, 5) Soil + 5 tons ha-1 of empty fruit bunches poration + 2 tons ha-1 dolomite, 6) Soil + empty fruit bunches poration 5 tons ha-1 + dolomite 4 tons ha-1, 7) Soil + empty fruit bunches poration 7.5 tons ha-1, 8) Soil + empty fruit bunches poration 7.5 tons ha-1 + dolomite 2 tons ha-1 , 9) Soil + empty fruit bunches poration 7.5 tons ha-1 + dolomite 4 tons ha-1. The variables observed included plant height, stem diameter, root length, plant wet weight, and plant dry weight. Providing a package of peat soil + 7.5 tons ha-1 of empty fruit bunches poration + 4 tons of ha-1 dolomite (T(8)) can increase the growth of red spinach plants which include plant height (4.46 – 37.36 cm), stem diameter (4.48 – 7.06 cm), the wet weight of the plant is 26.10 g/polybag. Keywords : poration, dolomite, plant height, palm oil empty fruit bunch 
Sintesis dan Karakterisasi XRD dari Nanosilika Menggunakan Metode Sol-gel Pramudita, Dimas; Nababan, Jesika; Isaura, Anasthasya; Ratnalisti, Putri; Simbolon, Wenika; Sylvani, Miranti Maya; Beladona, Siti Unvaresi Misonia; Putra, Riandy
Jurnal Penelitian UPR Vol. 5 No. 1 (2025): Jurnal Penelitian UPR: Kaharati
Publisher : LPPM Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52850/jptupr.v5i1.18458

Abstract

Mineral di Indonesia memiliki potensi besar untuk dikembang dalam sektor pertambangan dan industri salah satunya adalah silika. Silika oksida (SiO2) merupakan mineral berbentuk padatan yang banyak dianalisis dalam pengembangan penelitian sintesis nanomaterial. Pada penelitian ini sintesis nanomaterial silika dilakukan menggunakan metode sol-gel untuk memperoleh kristal murni yang sesuai standar. Tujuan dilakukan penelitian ini adalah menganalisis karakterisasi dan kemurnian hasil kristalisasi silika (SiO2) dengan metode sol-gel menggunakan XRD. Penelitian sintesis silika menggunakan metode sol-gel dilakukan di UPT Laboratorium Terpadu, Universitas Palangka Raya, Kalimantan Tengah. Hasil penelitian menunjukkan bahwa sintesis nanosilika dengan metode sol-gel terjadi dalam 2 tahapan reaksi, yaitu reaksi hidrolisis dan reaksi kondensasi, dimana diperoleh hasil puncak 2θ = 26,7° dengan nilai intensitas yang tinggi, nilai kristalinitas 64,4%, dan ukuran rata-rata kristal sebesar 1,2544 nm.
A Review: Structure and Synthesis of Perovskite as Lithium-Ion Battery (LIB) Material Miranti Maya Sylvani; Ferry Purwanto; Jumiati; Elfrida Roulina Simanjuntak; Sari Namarito Simarmata; Rendy Muhamad Iqbal; Riandy Putra; Rokiy Alfanaar; Siti Unvaresi Misonia Beladona
Bohr: Jurnal Cendekia Kimia Vol 2 No 01 (2023): Bohr: Jurnal Cendekia Kimia Vol 02 No 01
Publisher : Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Palangka Raya

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

Abstract

Lithium-ion battery (Li-ion battery or LIB) has gained significant attention as a highly promising power source. It offers excellent energy and power density profiles, along with other desirable properties such as no memory effect and long-lasting power capabilities. This has made Li-ion battery technology highly sought after in the energy industry and electronic devices. Perovskite materials have emerged as one of the non-precious metal-based materials that have attracted considerable interest in recent decades. Perovskites are highly regarded due to their remarkable properties and their potential applications in electrochemical energy devices. They possess excellent physical and chemical characteristics that make them suitable for use as electrode materials in rechargeable lithium-ion batteries.
Socialization on Making Solid Soap from Coffee Essential Oil in SMAN 4 Palangka Raya: Sosialisasi Pembuatan Sabun Padat dengan Penambahan Minyak Atsiri dari Kopi di SMAN 4 Palangka Raya Siti Unvaresi Misonia Beladona; Zimon Pereiz; Wahyu Nugroho
NAWASENA : JOURNAL OF COMMUNITY SERVICE Vol. 1 No. 01 (2023): Vol 01 No 01 2023
Publisher : NAWASENA : JOURNAL OF COMMUNITY SERVICE

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

Abstract

Abstrak Sabun merupakan campuran antara senyawa kimia dari asam lemak yang dapat diturunkan dari minyak nabati atau lemak hewani dengan alkali berupa natrium ataupun kalium hidroksida pada suhu 80-100°C melalui reaksi saponifikasi (penyabunan). Sabun digunakan sehari-hari sebagai pembersih, pengharum, dan pendukung Kesehatan kulit. Pemanfaatan sabun sebagai pembersih kulit semakin beragam, terlihat dari jenis, warna, wangi dan manfaat yang ditawarkan. Minyak atsiri dari kopi merupakan salah satu bahan alami yang dapat ditambahkan pada pembuatan sabun karena memberikan aroma atau wangi yang banyak disukai konsumen. Selain itu, minyak atsiri dari kopi juga memberikan efek melembutkan dan menenangkan kulit. Hal ini karena kopi mengandung senyawa kafein dan polifenol. Program Studi Kimia Universitas Palangka Raya melakukan kegiatan pengabdian kepada masyarakat melalui sosialisasi pembuatan sabun padat dengan penambahan minyak atsiri dari kopi di SMAN 4 Palangka Raya. Kegiatan ini terdiri dari tiga tahap, yaitu tahap persiapan sosialisasi, pelaksanaan sosialisasi, dan evaluasi hasil pengabdian. Hasil dari kegiatan pengabdian ini menunjukkan bahwa materi dapat dipahami dengan baik dan kegiatan ini sangat bermanfaat bagi siswa di SMAN 4 Palangka Raya. Sosialisasi ini dilakukan untuk memberikan pengetahuan tentang pembuatan sabun padat dengan penambahan minyak atsiri dari kopi. Abstract Soap is a mixture of chemical compounds from fatty acids derived from vegetable oils or animal fats withan alkali of sodium or potassium hydroxide at 80-100°C through a saponification reaction. Soap is used daily asa cleanser, fragrance, and skin health support. The use of soap as a skin cleanser is increasingly diverse, seenfrom the type, color, fragrance, and benefits offered. Coffee essential oil is one of the natural ingredients that canbe added to soap making because it gives a scent that many consumers like. In addition, the coffee essential oilalso has a softening and soothing effect on the skin. This is because coffee contains caffeine and polyphenolcompounds. Department of Chemistry Universitas Palangka Raya conducts community service activities throughthe socialization of making solid soap with the addition of coffee essential oils at SMAN 4 Palangka Raya. Thisactivity consists of three stages, namely the preparation stage for socialization, implementation of socialization,and evaluation of the results of community service. The results of this service activity show that the material canbe understood well and this activity is very useful for students at SMAN 4 Palangka Raya. This socialization wascarried out to provide knowledge about making solid soap with the addition of coffee essential oils.
Co-Authors Adiwijaya, Saputra Al-Hadi, Risfa Aliya Alfanaar, Rokiy Artha Karunia Gresiana Siregar Elda Alyatikah Elfrida Roulina Simanjuntak Elsandika, Gabriela Fakhrotun Nisa Ferry Purwanto Gracia, Amanda Natania Hakim, Muh. Supwatul Hartoko, Galih Husna Syaima Imelya, Marsya Indri Susanti Iqbal, Rendy Muhamad Iqbal, Rendy Muhamad Isaura, Anasthasya Jumiati Jumiati Kalalinggi, Septaria Yolan Made Dirgantara Marvin Horale Pasaribu Midun Efendi Patar Sihombing Miranti Maya Sylvani Moch Anwar Nababan, Jesika Pramudita, Dimas Purwanto, Ferry Qonita Awliya Hanif Rafsanjani, Muhamad Arief Rafsanjani, Muhammad Arief Ratnalisti, Putri Remi Ayu Pratika Riaa Safitri Riandy Putra Salampak, Salampak Sari Namarito Simarmata Sari, Meiyanti Ratna Kumala Simanjuntak, Elfrida Roulina Simarmata, Sari Namarito Simbolon, Wenika Sipayung, Ronald Regen Sugiyani, Tina Sustiyah Sustiyah Sylvani, Miranti Maya Tesalonika, Lidya Tety Wahyuningsih Manurung Wahyu Nugroho Wahyuningtyas, Meylinda Dwi Wulandari, Oktavia Rahmi Zimon Pereiz