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All Journal Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Indonesian Journal of Chemical Science Jurnal Sains Teknologi dan Lingkungan (JSTL) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Martabe : Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Chemical Analysis (IJCA) JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Stannum : Jurnal Sains dan Terapan Kimia Jurnal Abdi: Media Pengabdian Kepada Masyarakat Jurnal Natural SPIN: Jurnal Kimia & Pendidikan Kimia Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Riset Fisika Indonesia Media Bina Ilmiah Dharma Pengabdian Perguruan Tinggi (DEPATI) Journal of The Indonesian Society of Integrated Chemistry
Ristika Oktavia Asriza
Jurusan Kimia, Fakultas Teknik, Universitas Bangka Belitung
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The Sintesis dan Karakterisasi Komposit Fe3O4/Kitosan/Kaolin Bangka Eva Julianti; Verry Andre Fabiani; Ristika Oktavia Asriza
Stannum : Jurnal Sains dan Terapan Kimia Vol 2 No 2 (2020): Oktober 2020
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v2i2.1897

Abstract

Synthesis and characterization of Fe3O4/chitosan/clay Bangka has been carried out. Synthesis of composite was done with variations the composition of clay (0; 25; 50; 100 %) at the composition of Fe3O4 95 mg of Fe3O4 and 1 gr of chitosan. Characterization of composite Fe3O4/chitosan/clay have been analysed with XRD, FTIR, porosity test, the degree of development, and adsorption efficiency test for Cu2+ ion. The results of the analysed with XRD show the difractogram of clay and Fe3O4 at 2θ= 8,92o, 29,57o, and 45,61o (clay); 26,90o, and 35,64o (Fe3O4). Results of the analysed with ftir show the spectrum of the chitosan, clay, and Fe3O4 at 3825, 3689, 2103, 1425 cm-1 (chitosan), 1028, 884,41 cm-1 (clay), 791,11 cm-1 (chitosan) and 696,95 cm-1 (Fe3O4). The results of porosity test and the degree of development showed the high point are 1,547 and 754,63% without composition of clay. The adsorption test for Cu2+ ion show percentage of adsorption efficiency is 72,41% at composite of Fe3O4/chitosan with the clay added 1 gr.
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.
Phytochemical Analysis and Antifungal Activity of Phoebe excelsa Nees Leaf Extract Anis Nurohma; Occa Roanisca; Ristika Oktavia Asriza
Stannum : Jurnal Sains dan Terapan Kimia Vol 4 No 1 (2022): April 2022
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v4i1.2484

Abstract

Candidiasis is an infection caused by the fungus Candida albicans. Candidiasis was recorded in the second highest position as an infectious disease that accompanies HIV/AIDS, as many as 266 cases. Candidiasis is the highest infection caused by fungi and is opportunistic. Infections caused by candida albicans can generally be treated with antifungal medications. However, the use of drugs in the long term can cause resistance to these drugs, besides antifungal drugs can also cause various side effects. Therefore, in this study, an assessment of the phytochemicals of the ethanol extract of medang sang’s leaves and its bioactivity as antifungal Candida albicans will be carried out. Testing the content of secondary metabolites in medang’s leaves was carried out qualitatively by observing changes in the sample when reacted with reagents. Testing the antifungal activity of the ethanol extract of medang sang’s leaves was carried out in-vitro using the disc diffusion method. Results Based on the test, the ethanol extract of medang sang’s leaves contains alkaloids, flavonoids and tannins. The results of testing the antifungal activity of Candida albicans showed no inhibition, this was because the tang compound contained in the ethanol extract of medang sang’s leaves did not have antifungal activity against Candida albicans.
Synthesis Of Mg/Al Hydrotalsite-Magnetite As CN- Ion Adsorbent On Wastewater Tapioca Industry Maudi Aulia; Fajar Indah Puspita Sari; Ristika Oktavia Asriza
Stannum : Jurnal Sains dan Terapan Kimia Vol 3 No 2 (2021): Oktober 2021
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v3i2.2506

Abstract

Cyanide compounds contained in tapioca industrial wastewater are relatively high, so it is necessary to reduce cyanide levels. This study utilizes the hydrotalcite-magnetite ability to adsorption of CN- ions. The composite formation process is carried out by mixing the magnetite phase at the stage of hydrotalcite-magnetite synthesis. The characterization of X-Ray Diffraction (XRD) shows reflection of the magnetite peak of 2θ 21.42°; 30,28°; 33.40°;35.65° and 37°. While the peak of hydrotalocites at an angle of 11.66° ; 23,33° ; 34,80° ; 60,92° ; and 62.21°. This result is supported by ir spectra on hydrotalocytes shown by O-H group at wave number 3441 cm-1, O=C-O at wave numbers 1359 cm-1, M-O and M-OH at wave numbers 964 cm-1, 797 cm-1 and 673 cm-1. Fe-O and Fe-OH absorption from magnetites at wave numbers 892 cm-1, 798 cm-1 and 629 cm-1. 0.4 grams of hydrotalcite-magnetite at 30 minutes of stirring absorbed 0.0490 mg/L of cyanide from tapioca liquid waste solution. The value of adsorption capacity is 0.022 mg/g and the adsorption efficiency is 87.96%. The hydrotalcite-magnetite adsorption method is superior to aerob and anaerobic methods using bacteria in the tapioca industry.
PENINGKATAN KUALITAS AIR MINUM MELALUI METODE PENYARINGAN BERTINGKAT BERBASIS LIMBAH KULIT TELUR DI DESA TERU KABUPATEN BANGKA TENGAH Ristika Oktavia Asriza; Janiar Pitulima; Verry Andrei Fabiani; Robby Gus Mahardika
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 4 No. 1 (2018)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v4n1.p27-31

Abstract

In accordance Regulation Minister of Health Republic of Indonesia No. 492 / MENKES / PER / IV / 2010 about Quality Requirements of Water Drink, the acidity (pH) of water drink about 6.5 - 8. Based on situation analysis, Teru Village of Central Bangka Regency is below the standard, which about 4.1. The low pH of water drink in Teru village cause negative effect for health. So, an effort to improve the quality of water drink is needed. Through IbM Devotion of Society was created by filtration tool on eggshell-based waste in Teru Village, Central Bangka Regency. By utilizing an egg shell waste containing calcium carbonate, it is expected to increase the pH of the water. Based on the results of trials in the field, the results obtained that there was an increase in the pH of water drink to 6.91, which is in accordance with drinking water quality standard.
PENGARUH SILIKA SEKAM PADI PADA SINTESIS KOMPOSIT Fe3O4/KITOSAN/SiO2 DAN UJI ADSORPSI LOGAM Cu(II) Verry Andre Fabiani; Ristika Oktavia Asriza
JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Vol 4 No 2 (2022): Jurnal Pendidikan, Pendidikan Kimia, dan Ilmu Kimia
Publisher : LEMBAGA PENELITIAN DAN PENGABDIAN MASYARAKAT (LPPM) UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jedchem.v4i2.2463

Abstract

Synthesis of Fe3O4/chitosan/SiO2 composites has been carried out. This study observed the effect of rice husk silica on the synthesis of Fe3O4/Chitosan/SiO2 composites and the Cu (II) Metal Adsorption Test. The synthesis was carried out by synthesizing Fe3O4, preparing chitosan from rajungan shells, extracting silica from rice husks and synthesizing Fe3O4/chitosan/SiO2 Composite composites. Rice husk silica which was varied with a mass of 0.5; 0.75; and 1 gram. The results of XRD analysis showed the presence of Fe3O4 phase and SiO2 phase and crystalline structure. Composite adsorption test on Cu (II) metal showed the greatest adsorption efficiency with the addition of 1 gram of SiO2, which was 77.60 %.
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.
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
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.
Karakteristik Fisik Filter Masker Ramah Lingkungan dari Komposit Selulosa Asetat/Kitosan/AgNO3 Ristika Oktavia Asriza; Ropalia Ropalia; Kamalia Layal
Journal of The Indonesian Society of Integrated Chemistry Vol. 15 No. 1 (2023): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v15i1.23834

Abstract

Penelitian ini bertujuan untuk mensintesis material komposit dari selulosa asetat/kitosan/AgNO3 sebagai bahan baku untuk filter masker yang ramah lingkungan. Selulosa asetat berasal dari batang ubi kayu (Manihut utilissime) yang berperan sebagai matriks. Penambahan kitosan berfungsi sebagai filler  dan mampu meningkatkan nilai elongasi komposit. Sedangkan penambahan AgNO3 untuk meningkatkan kemampuan kitosan sebagai antibakteri. Metode yang digunakan dalam mensintesis komposit ini adalah dengan menggunakan metode inversi fasa. Komposit dengan variasi selulosa asetat 0,15 gram memiliki elongasi sebesar 4,4078% yang mendekati persyaratan ASTM D838.
Co-Authors Addela Amelia Adisyahputra Adisyahputra Adisyahputra, Adisyahputra Adisyahputra, Adisyahputra Amelia Narulita Anak Agung Istri Sri Wiadnyani Anggraeni Anggraeni Anis Nurohma Ary Samsiar Azizah, Qothrunnada Nur Della Adelia, Della Devi Valeriani Diah Humaira Dinda Liyana Elicia, Resta Eva Helda Eva Julianti Fahmi Rizal Fajar Indah Puspita Sari Fajar Indah Puspita Sari Herry Marta Saputra Janiar Pitulima Karnelasatri, . Ken Ayu Ken Ayu Layal, Kamalia Maudi Aulia Nadia Nadia Narulita, Amelia Nurhadini Nurhadini Qothrunnada Nur Azizah Restani Eka Putri Rizka Felly Roanisca, Occa Robby Gus Mahardika Ropalia, Ropalia Sari, Syifa Aulia Permata Shania Sakhila Shelly Victory Soluna Desbait Hutagalung Sri Hawa T Insan Verry Andre Fabiani Zomi Zomi