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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) CHEMISTRY PROGRESS JURNAL KIMIA SAINS DAN APLIKASI Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal Kimia Mulawarman IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Al-Kimia SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Chemistry Indonesian Journal of Chemical Research Martabe : Jurnal Pengabdian Kepada Masyarakat AGROMIX ALKIMIA : Jurnal Ilmu Kimia dan Terapan Stannum : Jurnal Sains dan Terapan Kimia Journal of Instructional and Development Researches Jurnal Pijar MIPA Asian Journal of Health and Applied Sciences Jurnal Riset Fisika Indonesia Dharma Pengabdian Perguruan Tinggi (DEPATI) Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Nurhadini Nurhadini
Jurusan Kimia, Fakultas Teknik, Universitas Bangka Belitung
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology 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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Concentration Optimization Na2CO3 Alginates from Turbinaria sp. as Raw Material Electrolite Polymer for DSSC Dinda Liyana; Nurhadini Nurhadini; Ristika Oktavia Asriza
Stannum : Jurnal Sains dan Terapan Kimia Vol 3 No 1 (2021): April 2021
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v3i1.2238

Abstract

Polymer electrolyte DSSC is one component of the application can convert solar energy into electrical energy. The polymer electrolyte can be synthesized from brown seaweed Turbinaria sp. However, the optimization of alginate extraction has not been widely carried out, so the aim of this study was to determine the optimum conditions for variations in the concentration of Na2CO3 (3%, 5%, 7%) in extracts from Turbinaria sp as raw material for polymer electrolyte synthesis for DSSC. Alginate optimum extraction results known by percentage yield, moisture content and functional groups using FTIR analysis. The optimum conditions for alginate extraction from Turbinaria sp are Na2CO3 5% and a temperature of 60 oC with a yield of 23.81% and a moisture content of 8.1%. FTIR results also indicate the intensity of the strongest mannuronic seen at 822cm-1 wave numbers.
SOSIALISASI DAN EDUKASI PENINGKATAN KUALITAS PUPUK KOMPOS DARI SAMPAH ORGANIK MENGGUNAKAN MESIN PENGADUK PUPUK DI KSM SRIMENANTI JAYA SUNGAILIAT Rizka Felly; Verry Andre Fabiani; Nurhadini Nurhadini; Ristika Oktavia Asriza
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 6, No 3 (2022): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v6i3.10357

Abstract

ABSTRAKSeiring dengan meningkatnya jumlah sampah organik yang bersumber dari rumah tangga, menyebabkan semakin besarnya kebutuhan fasilitas dalam pengelolaan sampah. Perlu upaya dan strategi untuk menangani masalah ini secara tepat dan efisien. Kota Sungailiat memiliki Kelompok Swadaya Masyarakat (KSM) yang bernama KSM Srimenanti Jaya, yang peduli akan permasalahan sampah dan peningkatan kualitas lingkungan di Kota Sungailiat. Salah satu produk yang dapat dihasilkan dari pengelolaan sampah organik ini adalah pupuk kompos. Berdasarkan survei dan wawancara yang telah dilakukan, KSM Srimenanti Jaya memproduksi pupuk kompos namun memiliki permasalahan terkait kualitas pupuk kompos yang diproduksi tidak seragam/homogen. Hal ini diakibatkan oleh tidak tersedianya alat pengaduk pupuk kompos. Pengadukan pupuk kompos dilakukan secara manual menggunakan cangkul sehingga mempengaruhi homogenitas pupuk kompos yang diproduksi dan durasi proses pengadukan yang lebih lama. Oleh karena itu, perlunya penyediaan, sosialisasi dan edukasi mengenai teknologi mesin pengaduk pupuk kompos hasil olahan sampah organik bagi KSM Srimenanti Jaya sebagai metode dalam upaya peningkatan kualitas pupuk kompos yang dihasilkan. Setelah dilakukan penyediaan, sosialisasi dan edukasi teknologi mesin pengaduk kompos, terdapat peningkatan kualitas pupuk kompos yang terlihat dari volume pupuk yang seragam dan tidak ada yang menggumpal. Warna dan bau pupuk kompos organik juga seperti tanah dan teksturnya tidak terlalu basah/kering. Berbeda dengan kondisi hasil sebelum adanya penggunaan mesin pengaduk kompos. Selain itu, berdampak baik juga pada produksi pupuk kompos yang meningkat sebanyak 1 ton per bulan. Kata kunci: sampah organik; sampah rumah tangga; pupuk kompos; mesin pengaduk. ABSTRACTAlong with the increasing amount of organic waste sourced from households, causing the need for facilities in waste management is increasing. Efforts and strategies are needed to deal with this problem appropriately and efficiently. Kota Sungailiat has a Non-Governmental Organization (KSM) named KSM Srimenanti Jaya which cares about waste problems and improving environmental quality in Kota Sungailiat. One of the products that can be produced from this organic waste management is compost. Based on surveys and interviews that have been carried out, KSM Srimenanti Jaya produces compost but has problems related to the quality of the compost produced which is not uniform/homogeneous. This is due to the unavailability of a compost mixer. Compost mixing was done manually using a hoe that affects the homogeneity of the compost produced and the duration of the mixing process. Therefore, it is necessary to carry out provision, socialization and education about composting machine technology for processing organic waste for KSM Srimenanti Jaya as an effort to improve the quality of the compost produced. After providing, socializing and educating the compost mixer technology, there was an increase in the quality of the compost as seen from the uniform volume of fertilizer and no lumps. The color and smell of organic compost is also soil-like and the texture is not too wet/dry. This condition has the differences between the results before and after using a compost mixer machine. Besides that, it also has a good impact on compost production which increases by 1 ton per month. Keywords: organic waste; household waste; compost; compost mixer machine.
lebih Teknologi Membran Nanofiltrasi Terhadap Pengolahan Masalah Perairan: Review Syifa Aulia Permata Sari; Lesta Lesta; Syarmila Syarmila; Yunilita Hanum; Zulfa Mawaddah; Jurian Jurian; Nurhadini Nurhadini
Stannum : Jurnal Sains dan Terapan Kimia Vol 4 No 2 (2022): Oktober 2022
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v4i2.2936

Abstract

One of the most widely used membranes is the nanofiltration membrane, this membrane is formed from various nanomaterials, such as metal nanoparticles and metal oxides, carbon-based nanoparticles, metal organic frameworks, and micro or organic nanoparticles. Membrane separation processes are used to concentrate or fractionate liquids to produce two liquids with different compositions. This makes the nanofiltration process an alternative compared to conventional processes. The potential of nanofiltration membranes can be used in textile industry wastewater treatment, tofu liquid waste, tofu liquid waste treatment, batik wastewater testing, and groundwater management as drinking water. In addition, nanofiltration membrane technology can be used as a separator for a substance in the air, such as removal of cypermethrin, arsenic cream, concentration of lactic acid bacteria as a tasty probiotic, removal of carbosulfan, Zr-Hf separation, and can see the characterization and performance evaluation of the antifouling properties of membranes. . Based on the process, the performance of a membrane is determined by two simple factors, namely flux (permeate flow rate) and membrane selectivity.
Uji Total Fenolik dan Aktivitas Antioksidan Ekstrak Batang Bajakah (Spatholobus littoralis Hassk.) Sari Wulan; Occa Roanisca; Nurhadini Nurhadini
Stannum : Jurnal Sains dan Terapan Kimia Vol 4 No 2 (2022): Oktober 2022
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v4i2.3265

Abstract

Diseases in the human body can be caused by free radicals. Environmental conditions and unhealthy lifestyles cause the human body's defense system against free radicals to become weaker, so it is necessary to have external antioxidants to help ward off free radicals. Therefore, it is necessary to have natural antioxidants from plants in overcoming free radicals. This study aims to determine the levels of phenolic contained in the ethanol extract of bajakah stems and their potential bioactivity as antioxidant. Determination of phenolic content was carried out using the Folin-Ciocalteau method and antioxidant testing was carried out using the DPPH method. The total phenolic test results obtained were 21.535 mg EAG/g. The antioxidant test of the ethanol extract of the bajakah stem showed weak activity with an average IC50 value of 281,717 g/mL.
Penerapan Teknologi Mesin Pencacah Sampah Organik Sebagai Upaya Peningkatan Kualitas Pupuk Kompos Pada KSM Srimenanti Jaya Sungailiat Ristika Oktavia Asriza; Nurhadini Nurhadini; Verry Andre Fabiani; Fahmi Rizal
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 2 No 1 (2022): May 2022
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.258 KB) | DOI: 10.33019/depati.v2i1.2995

Abstract

Currently, special efforts are needed to create proper and efficient waste management. The formation of a waste bank or through self-help groups is an effort to improve the community’s economy by taking advantage of the waste problems that are around. The Srimenanti Jaya Non-Governmental Organization (KSM) is a group that cares about environmental conditions and waste problems. KSM Srimenanti Jaya has helped the community and government in efforts to handle household waste into compost. Through this community service activity, counseling and simple technology are provided in the form of a garbage chopping machine to facilitate the process of processing waste into compost. To speed up the composting process, it is necessary to enumerate the waste into smalller sizes with a garbage chopper machine. The manufacture of this garbage chopping machine is designed with a shredder mechanism where the inserted waste will be attacted, cut, and chopped so that it becomes small pieces. Through the knowledge and technology generated from this activity, it is hoped that KSM Srimenanti Jaya can produce compost that has a selling value and is compotitive in the market
Nanoencapsulation of Simpur (Dillenia indica L.) Leaf Extract For Antibacterial Robby Gus Mahardika; Shania Sakhila; Nurhadini Nurhadini
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.13675

Abstract

Simpur leaf (Dillenia indica L.) as a traditional medicinal plant spread in the Bangka Belitung Islands. Secondary metabolites contained in simpur leaf extract are alkaloids, flavonoids, phenols, tannins, saponins, steroids, and terpenoids. Compounds that provide pharmacological properties such as polyphenols are unstable to the influence of temperature and high light intensity so that they are easily oxidized. The challenge to protect the damage of these compounds can be done by means of nanoencapsulation. This study aims to determine the size and efficiency of the nanoencapsulation of simpur leaf extract and its antibacterial bioactivity against Staphylococcus aureus and Escherichia coli bacteria. Manufacture of nanoencapsulation using the nanoprecipitation method with the constituent components of PCL (1.5 g), Tween 80 (50 mL), simpur leaf extract (0.15 g; 0.25 g; 0.35 g). Antibacterial activity testing using disc diffusion method. Nanoencapsulated extract mass 0.15 g; 0.25 g; and 0.35 g have sizes of 167.2 nm, respectively; 208.7 nm; and 229.1 nm and encapsulation efficiency of 88.21%; 56.77%; and 5.34%. The antibacterial activity of the nanoencapsulation and extract was more effective in inhibiting the growth of Staphylococcus aureus bacteria than Escherichia coli bacteria. Strength of activity against Staphylococcus aureus bacteria in nanoencapsulated extracts was categorized as moderate to strong and Escherichia coli bacteria in extracts were categorized as moderate.
PENDAMPINGAN DESAIN KEMASAN PADA KOMUNITAS KULINER KOTA PANGKALPINANG DALAM MENINGKATKAN DAYA SAING PRODUK Occa Roanisca; Devi Valeriani; Herry Marta Saputra; Nurhadini Nurhadini; Eva Helda; Ristika Oktavia Asriza
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 3 No 1 (2023): Mei 2023
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/depati.v3i1.4066

Abstract

Micro, Small and Medium Enterprises (MSMEs) play a very strategic role in community-based economic development in Indonesia. The existence of MSMEs has been proven to be able to survive when facing a crisis. This is because MSMEs are only on a small scale, so the business capital requirements are small, and they are able to adapt to market needs. Aspects that are very important to support the existence of MSMEs are business legality, packaging design and digital-based marketing. The Culinary Community of Pangkalpinang City has superior products. The products have been marketed to the public and are often offered at District, Regency and Provincial level exhibitions. However, these products do not yet have an attractive and safe packaging design. Based on the results of an audience with the Culinary Community administrators, to overcome this problem assistance is needed for MSME actors to design packaging for the Culinary Community. This activity will involve the management of the Culinary Community by facilitating several products to make packaging designs attractive and safe. To realize this there are several problems that partners (MSMEs) have, namely: lack of knowledge about designing stickers and product packaging in an attractive and safe manner. Solutions that can be offered to help partners by socializing and assisting safe and attractive sticker and packaging designs. To reach a wider market share, socialization and assistance is carried out in designing stickers and packaging. This community service activity went well. The results of the socialization activities found that the target partners understood the importance of packaging designs that were attractive, informative and could be used as promotions. Partners understand packaging can increase product sales. At the end of the mentoring activity, the service team facilitated and handed over standing pounch packages made of aluminum foil to three target partners representing the culinary community of Pangkalpinang City. The hope of the Pangkalpinang City Tourism Office is that this community service activity can continue to increase the existence and development of culinary delights in Pangkalpinang City.
Synthesis and Characterization of Cellulose Acetate from α-Cellulose of Paper Waste Ristika O Asriza; Nurhadini Nurhadini; Fardhan Arkan
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.82

Abstract

A cellulose derivative substance called cellulose acetate is frequently used in the manufacturing of photographic film, fiber, membranes, and bioplastics. However, the availability of sources for cellulose acetate's raw material does not support this demand. Paper waste has a high cellulose content. Therefore, the aim of this research is to synthesize cellulose acetate from α-cellulose waste paper. In order to separate alpha cellulose from waste paper in this study, the delignification process with NaOH solvent was used as a first step. After obtaining alpha cellulose, acetic anhydride was used to carry out the acetylation reaction. The yield of α-cellulose from paper waste is 51.8%. α-Cellulose is reacted with acetic anhydride through acetylation reactions and hydrolysis of acetyl groups. From this reaction, functional groups -OH, C=O ester, and C-O acetyl appeared from the FTIR spectra analysis which indicated that cellulose acetate had been successfully synthesized. The type of cellulose acetate produced is a type of cellulose monoacetate with an acetyl groups of 23% and a degree of substitution value of 1.17.
PENINGKATAN KUALITAS AIR MINUM MENGGUNAKAN PENYARINGAN SEDERHANA BERBASIS LIMBAH CANGKANG SIPUT GONGGONG DI DESA KULUR ILIR KABUPATEN BANGKA TENGAH Eka Sari Wijianti; Nurhadini Nurhadini; Saparin Saparin
Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Vol 3 No 2 (2016): Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jpu.v3i2.154

Abstract

Permasalahan utama yang dihadapi oleh masyarakat desa Kulur Ilir adalah kurang tersedianya sumber air yang memenuhi baku mutu air minum terutama derajat keasaman air (pH) yang rendah yaitu berkisar antara 3,9– 5,6. Tujuan dari pengabdian kepada masyarakat ini adalah masyarakat diharapkan dapat membuat dan menggunakan alat penyaringan air sederhana skala rumah tangga untuk memperoleh sumber air yang memenuhi baku mutu air minum sesuai Peraturan Menteri Kesehatan Republik Indonesia Nomor 492/MENKES/PER/IV/2010 Tentang Persyaratan Kualitas Air Minum. Metode yang digunakan adalah membuat penyaringan sederhana menggunakan bahan-bahan yang tersedia di desa Kulur Ilir, antara lain : serbuk arang, batu kerikil, pasir pantai, ijuk/sabut kelapa, limbah cangkang siput gonggong yang terdapat di pesisir pantai desa Kulur Ilir. Cangkang siput gonggong dapat meningkatkan pH air karena mengandung kalsium karbonat yang tinggi. Selain itu menggunakan wadah penampungan air sumur dari drum 520 liter. Program ini membuat masyarakat desa Kulur Ilir memperoleh pengetahuan tentang pentingnya mengkonsumsi air minum yang baik untuk kesehatan. Selain itu, masyarakat mengetahui cara pembuatan alat penyaringansederhana. Berdasarkan hasil pengukuran pH air (7-8) dan fisik air (tidak berwarna, tidak berasa dan berbau) sesudah dilakukan penyaringan maka penyaringan sederhana berbasis cangkang siput gonggong dapat meningkatkan kualitas air minum masyarakat yang bersumber dari air sumur. Peninjauan (survey) kembali ke masyarakat diperoleh bahwa masyarakat mengaplikasikan kegiatan yang telah dilakukan.
Total Phenolic and Flavonoid Test of Gleichenia linearis Leaf Extract as Antioxidant Using Microwave Assisted Extraction Sri Rizki Pratiwi; Occa Roanisca; Nurhadini Nurhadini
Stannum : Jurnal Sains dan Terapan Kimia Vol 5 No 2 (2023): Oktober 2023
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v5i2.4318

Abstract

Paparan sinar ultra violet (UV) yang bersumber dari cahaya matahari dan paparan radiasi seperti penggunaan ponsel, laptop, dan lain-lain dapat menjadi faktor terbentuknya radikal bebas. Paparan radikal bebas berlebih akan menyebabkan stres oksidatif sehingga diperlukan pertahanan yang dapat mencegah kerusakan, salah satunya menggunakan antioksidan. Salah satu sumber antioksidan adalah daun resam. Ekstrak daun resam diketahui memiliki kandungan flavonoid, alkaloid, tanin, saponin, steroid dan triterpenoid. Penelitian ini bertujuan untuk mengetahui pengaruh pelarut dan variasi waktu ekstraksi terhadap rendemen, total fenolik, total flavonoid, dan aktivitas antioksidan ekstrak daun resam, serta mengetahui hubungan antara kandungan total fenolik dan kandungan total flavonoid terhadap aktivitas antioksidan. Pengujian terdiri dari uji total fenolik menggunakan metode Folin-Ciocalteau, uji total flavonoid menggunakan metode AlCl3, dan uji antioksidan menggunakan metode DPPH. Pelarut yang digunakan berupa aseton dan etanol, sedangkan lama waktu ekstraksi yang digunakan yaitu 5, 10, 15 dan 30 menit. Hasil rendemen, total fenolik, total flavonoid, dan aktivitas antioksidan tertinggi pada penelitian ini dihasilkan oleh pelarut etanol dengan waktu MAE selama 10 menit, dengan nilai berturut-turut 62,21%, 172,9 mg EAG/g, 110,60 mg EK/g, dan 24,12 µg/mL. Pengujian korelasi menunjukkan total fenolik berperan sebesar 95,5% sedangkan total flavonoid berperan sebesar 56,5% terhadap aktivitas antioksidan (IC50) yang dihasilkan. Fenolik merupakan senyawa yang paling dominan didalam ekstrak daun resam yang berperan sebagai antioksidan.
Co-Authors Adi Syahputra Adisyahputra, Adisyahputra Amelia Narulita Anggraeni Anggraeni Ayu Ratna Sari Azizah, Qothrunnada Nur Claudia, Dita Devi Valeriani Dinda Liyana Eka Sari Wijianti Ependi, Eresti Eva Helda Evahelda Evahelda Fahmi Rizal Fajar Indah Puspita Sari Fardhan Arkan Fransiska, Destalia Fuaddudin, Fuaddudin Herry Marta Saputra I Made Arcana Imelda Hotmarisi Silalahi Jurian Jurian Karnelasatri, . Ken Ayu Ken Ayu Khairudin Khairudin Layal, Kamalia Lesta Lesta Lestari, Iin Megawati Ayu Putri Mimi Mawaddah Nadia Nadia Narulita, Amelia Ndruru, Sun Theo Constan Lotebulo Putri, Megawati Ayu Qothrunnada Nur Azizah Rezalia Annisa Riesna Prassanti Ristika O Asriza Ristika Oktavia Asriza Rizka Felly Roanisca, Occa Robby Gus Mahardika Robiana, Sella Rufti Puji Astuti Saparin, Saparin Sari Wulan Sari, Ratih Puspita Shania Sakhila Sitti Nurul Aini Sri Rizki Pratiwi Syarmila Syarmila Syifa Aulia Permata Sari Verry Andre Fabiani Widodo Budi Kurniawan Yunilita Hanum Zulfa Mawaddah