Article Per Year (5 Year)
p-Index From 2019 - 2024
3.834
P-Index
This Author published in this journals
All Journal CHEMISTRY PROGRESS JBIO: jurnal biosains (the journal of biosciences) Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Indonesian Journal of Chemical Science Indonesian Journal of Pure and Applied Chemistry SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Martabe : Jurnal Pengabdian Kepada Masyarakat JKPK (Jurnal Kimia dan Pendidikan Kimia) Fullerene Journal of Chemistry JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Stannum : Jurnal Sains dan Terapan Kimia Jurnal Abdi: Media Pengabdian Kepada Masyarakat Empowerment: Jurnal Pengabdian Masyarakat Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Dharma Pengabdian Perguruan Tinggi (DEPATI)
Verry Andre Fabiani
Jurusan Kimia, Fakultas Teknik, Universitas Bangka Belitung
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 30 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 30 Documents
Search

 1   2   3 
Remediasi Logam Seng (Zn) pada Air Bekas Tambang Timah Menggunakan Nanomagnetik Fe3O4/Kitosan Cangkang Rajungan (Portunus pelagicus) Fabiani, Verry Andre; Asriza, Ristika Oktavia
Indonesian Journal of Chemical Science Vol 8 No 3 (2019)
Publisher : Universitas Negeri Semarang

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

Abstract

Telah dilakukan remediasi logam seng (Zn) pada air bekas tambang timah menggunakan nanomagnetik Fe3O4/kitosan dari cangkang rajungan. Remediasi logam seng pada air bekas tambang timah dilakukan dengan memvariasikan massa Fe3O4 (0 mg, 75 mg, 95 mg, 105 mg, 120 mg) dan lama pengadukan (30 menit, 40 menit dan 50 menit). Nanomagnetik (Fe3O4)/kitosan cangkang rajungan berhasil menurunkan konsentrasi logam seng (Zn) pada air bekas tambang timah sebesar 89,17%. Kondisi optimum remediasi terjadi pada penambahan Fe3O4 sebesar 95 mg dengan lama pengadukan yaitu 30 menit. Kata kunci : cangkang rajungan, kitosan, nanomagnetik, remediasi, seng
ANALISIS KONDUKTIVITAS DAN TERMAL PADA POLIMER ELEKTROLIT DARI KITOSAN/PVA/GLISEROL/LiClO4 UNTUK APLIKASI BATERAI ION LITIUM ., Nurhadini; Fabiani, Verry Andre; Putri, Megawati Ayu; Lestari, Iin
CHEMISTRY PROGRESS Vol 14, No 1 (2021)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.14.1.2021.34074

Abstract

Penggunaan polimer ramah lingkungan merupakan tantangan bagi industri baterai ion litium saat ini dikarenakan sifatnya yang mudah terbiodegradasi menjadi keunggulan polimer alam seperti kitosan dengan bahan baku dari alam yang melimpah. Komposisi polimer elektrolit dalam penelitian ini terdiri atas kitosan, PVA, gliserol yang didopan dengan LiClO4. Penelitian ini bertujuan untuk menganalisis sifat konduktivitas dan termal dari polimer elektrolit kitosan/PVA/gliserol/LiClO4. Pembuatan polimer elektrolit ini menggunakan metode casting. Peningkatan massa kitosan dalam komposisi polimer elektrolit menyebabkan adanya peningkatan intensitas pada bilangan gelombang 1718 cm-1 dan peningkatan intensitas serapan pada bilngangan gelombang 1271 cm-1 dengan masing-masing puncak serapan tersebut adalah gugus fungsi dari C=O dan gugus fungsi C-O.  Berdasarkan data konduktivitas menunjukkan bahwa komposisi 70/30/20/20 (kitosan /PVA/Gliserol/LiClO4) memiliki konduktivitas tertinggi sebesar 4,8 x 10-5S/cm. Hasil kurva TGA menunjukkan stabilitas termal komposisi polimer elektrolit hingga 210oC dan peningkatan jumlah kitosan dalam polimer elektrolit menurunkan kestabilan termal. Polimer elektrolit dari kitosan/PVA/Gliserol/LiClO4 dapat diaplikasikan untuk baterai ion litium berdasarkan analisis konduktivitas ionik dan kestabilan termal. ABSTRACT The use of environmentally friendly polymers is a challenge for the lithium-ion batteries industry today because its biodegradable nature is an advantage of natural polymers such as chitosan with abundant raw materials from nature. The polymer electrolyte composition in this study consisted of chitosan, PVA, glycerol doped with LiClO4. This study aims to analyze the conductivity and thermal properties of the polymer electrolyte chitosan/PVA/Glycerol/LiClO4. The polymer electrolyte was made using a casting method. The increasing of the chitosan mass in the polymer electrolyte composition led to an increase in intensity at the wave number 1718 cm-1 and an increase in absorption intensity at the wavenumber of 1271 cm-1 with absorption peaks being a functional group of C=O and C-O respectively. Based on the conductivity data, it showed that the composition of 70/30/20/20 (chitosan/PVA/Glycerol/LiClO4) had the highest conductivity of 4.8 x 10-5S/cm. The results of the TGA curve illustrated that polymer electrolyte had thermal stability until 210oC and the increasing amount of chitosan of polymer electrolyte decreased thermal stability. Polymer electrolyte chitosan
The Utilization of Medical Mask Waste as a High-Quality Nanofiber Material a Review Victory, Shelly; Putri, Restani Eka; Sakhila, Shania; Hutagalung, Soluna Desbait; Amelia, Addela; Fabiani, Verry Andre
Indonesian Journal of Chemical Science Vol 10 No 2 (2021)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v10i2.49538

Abstract

Medical mask waste is part of the covid waste that can threaten the living creatures and environment since it was pathogenic and indestructible. Moreover, the waste management of medical mask waste is still ineffective due to the limit of technology and resource. The purpose of this review is to learn the potency of medical mask waste as the main component of nanofiber fabrication. This review is using the literature review method. There are some fundamental stages for creating nanofiber from polypropylene of medical mask waste, such as pre-treatment, making polypropylene solution, fabrication, and characterization. Removal of medical mask waste contaminants can be using a chemical solvent, dry heat, or exposure to ultraviolet C. Type of solvent plays a principal role in producing polypropylene solvent that is ready to fabricate. On the industrial scale, electrospinning is a commonly used method for nanofiber fabrication. The characterization of the fiber and pore size can be analyzed with scanning electron microscope (SEM) analysis, material crystallinity using x-ray diffraction (XRD) spectroscopy, and thermogravimetric analysis (TGA) measuring the thermal stability of nanofiber.
Remediasi Logam Seng (Zn) pada Air Bekas Tambang Timah Menggunakan Nanomagnetik Fe3O4/Kitosan Cangkang Rajungan (Portunus pelagicus) Fabiani, Verry Andre; Asriza, Ristika Oktavia
Indonesian Journal of Chemical Science Vol 8 No 3 (2019)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v8i3.34541

Abstract

Telah dilakukan remediasi logam seng (Zn) pada air bekas tambang timah menggunakan nanomagnetik Fe3O4/kitosan dari cangkang rajungan. Remediasi logam seng pada air bekas tambang timah dilakukan dengan memvariasikan massa Fe3O4 (0 mg, 75 mg, 95 mg, 105 mg, 120 mg) dan lama pengadukan (30 menit, 40 menit dan 50 menit). Nanomagnetik (Fe3O4)/kitosan cangkang rajungan berhasil menurunkan konsentrasi logam seng (Zn) pada air bekas tambang timah sebesar 89,17%. Kondisi optimum remediasi terjadi pada penambahan Fe3O4 sebesar 95 mg dengan lama pengadukan yaitu 30 menit. Kata kunci : cangkang rajungan, kitosan, nanomagnetik, remediasi, seng
The Utilization of Medical Mask Waste as a High-Quality Nanofiber Material a Review Victory, Shelly; Putri, Restani Eka; Sakhila, Shania; Hutagalung, Soluna Desbait; Amelia, Addela; Fabiani, Verry Andre
Indonesian Journal of Chemical Science Vol 10 No 2 (2021)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v10i2.49538

Abstract

Medical mask waste is part of the covid waste that can threaten the living creatures and environment since it was pathogenic and indestructible. Moreover, the waste management of medical mask waste is still ineffective due to the limit of technology and resource. The purpose of this review is to learn the potency of medical mask waste as the main component of nanofiber fabrication. This review is using the literature review method. There are some fundamental stages for creating nanofiber from polypropylene of medical mask waste, such as pre-treatment, making polypropylene solution, fabrication, and characterization. Removal of medical mask waste contaminants can be using a chemical solvent, dry heat, or exposure to ultraviolet C. Type of solvent plays a principal role in producing polypropylene solvent that is ready to fabricate. On the industrial scale, electrospinning is a commonly used method for nanofiber fabrication. The characterization of the fiber and pore size can be analyzed with scanning electron microscope (SEM) analysis, material crystallinity using x-ray diffraction (XRD) spectroscopy, and thermogravimetric analysis (TGA) measuring the thermal stability of nanofiber.
PEMISAHAN ZIRKONIA (ZrOâ‚‚) DARI PASIR ZIRKON BANGKA MENGGUNAKAN METODE ALKALI FUSION DAN LEACHING ASAM KLORIDA Afriza, Gita; Fabiani, Verry Andre; Saraswati, Sabrina
CHEMISTRY PROGRESS Vol 14, No 2 (2021)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.14.2.2021.39029

Abstract

Telah dilakukan pemisahan zirkonia dari pasir zirkon Bangka menggunakan metode peleburan alkali dan pelindian asam klorida yang bertujuan untuk mengetahui pengaruh waktu peleburan terhadap persentase zirkonia dan untuk mengetahui karakteristik dari pasir zirkon Bangka setelah diesktraksi. Proses peleburan dilakukan dengan mereaksikan sampel zirkon dengan NaOH dimasukkan kedalam tungku pada suhu 700 ℃ dengan variasi waktu peleburan 5, 10, 15, 20, 25, 30, 60, 120 dan 180 menit. Proses ini kemudian dilanjutkan dengan pencucian menggunakan akuades sebanyak 250 ml dengan pengadukan dan pemanasan menggunakan pelat pemanas pengaduk magnet selama 1 jam dengan kecapatan 180 rpm pada suhu 80 ℃, disaring, dan residunya dilindi dengan HCl 37% sesuai dengan langkah pencucian dengan akuades. Filtrat dari pelindian dengan HCl kemudian diambil dan diendapkan dengan NH4OH 12,5% dan selanjutnya diklasinasi dengan tungku pada suhu 700 ℃ sampai kering. Hasil ekstraksi kemudian dikarakterisasi menggunakan XRF dan XRD. Hasil penelitian menunjukkan waktu optimum peleburan adalah pada waktu 30 menit. Dilihat dari data karakterisasi XRF dan XRD, fasa yang terbentuk yaitu tetragonal dengan persentase zirkonia sebesar 65% dan kadar Zr dalam zirkonia sebesar 42,72%.ABSTRACT The separation of zirconia from Bangka zircon sand was conducted using the alkaline fusion method and hydrochloric acid leaching which aims to determine the effect of fusion time on the percentage of zirconia and to determine the characteristics of Bangka zircon sand after extraction. The fusion process was done by reacting zircon samples with NaOH in a furnace at a temperature of 700 oC with various fusion times of 5, 10, 15, 20, 25, 30, 60, 120 and 180 minutes. This process was then followed by washing using 250 mL of distilled water by stirring and heating using a hot plate magnetic stirrer for 1 hour at a speed of 180 rpm at 80 oC, filtered, and the residue was leached with 37% HCl according to the washing step with distilled water. The filtrate from leaching with HCl was then precipitated with 12.5% NH4OH and then calcined in a furnace at 700 oC to dry. The extraction results were then characterized using XRF and XRD. The results showed that the optimum melting time was 30 minutes. According to the XRF and XRD characterization data, the formed phase was tetragonal with a zirconia percentage of 65% and a Zr content of 42.72% in zirconia.
ISOLATION AND CHARACTERISATION OF Pb RESISTANT BACTERIA FROM MARINE SEDIMENT AFFECTED BY INCONVENTIONAL TIN MINING AT SAMPUR BEACH, BANGKA TENGAH DISTRICT Ina Miranti; Rahmad Lingga; Verry Andre Fabiani
JBIO: jurnal biosains (the journal of biosciences) Vol 7, No 2 (2021): Jurnal Biosains
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v7i3.24600

Abstract

Offshore tin mining can causes heavy metal contamination, one of which is lead (Pb) metal. Lead pollution can causes environmental damage and  toxic  to living organisms. One of the methods to reduce lead pollution was by bioremediation techniques. Resistant bacteria were potential to be used as bioremediation agent. This research aimed to determine the lead level in Sampur coastal waters and to obtain bacteria that have resistance to lead (Pb). The research method was purposive sampling to take a sample of water and sediment. The AAS test results indicated that the Pb level in seawater is higher than sediment. A normal sea water pH can caused the Pb solubility in the water to be stable. The Pb level in seawater was passed the established quality standards, so that potentially cause toxicity for the aquatic biota. The highest Pb levels in sediment was found in vicinity of tin mining activities area. The isolation results showed that the number of bacteria ranged from 11,105 – 34,105 CFU/g. The higher Pb levels in sediment causing the number of bacteria will be lower. There were 7 isolates that resistant of Pb 100 ppm and constitute bacteria from the genus Alcaligens, Meniscus, Neisseria, Erythrobacter, and Alteromonas.
PENINGKATAN KUALITAS PUPUK KOMPOS DARI LIMBAH RUMAH TANGGA MENGGUNAKAN STIMULATOR EM4 PADA KELOMPOK SWADAYA MASYARAKAT SRIMENANTI JAYA KABUPATEN BANGKA Verry Andre Fabiani; Fajar Indah Puspita Sari; Nurhadini Nurhadini; Adisyahputra Adisyahputra; Ristika Oktavia Asriza
SELAPARANG Jurnal Pengabdian Masyarakat Berkemajuan Vol 4, No 1 (2020): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.315 KB) | DOI: 10.31764/jpmb.v4i1.2995

Abstract

ABSTRAKKelurahan Srimenati merupakan kelurahan di Kecamatan Sungailiat Kabupaten Bangka yang hanya memiliki 1 lokasi tempat pembuangan sampah. Pengolahan sampah umumnya hanya dihancurkan dan didistribusikan ke tempat pengolahan sampah dan bank sampah. Sejauh ini pengolahan sampah hanya dilakukan oleh Kelompok Swadaya Masyarakat (KSM). Kurang optimalnya pengolahan pupuk kompos yang telah dilakukan sehingga kualitas pupuk kompos yang dihasilkan masih rendah, terbatasnya stimulator EM4 karena biaya yang mahal dan kurangnya inovasi pengolahan pupuk kompos yang berkualitas. Pada program pengabdian ini dilakukan penyuluhan tentang peningkatan kualitas pupuk kompos berbasis limbah rumah tangga, mitra pengabdian yaitu dari kelompok swadaya masyarakat (KSM) Srimenanti Jaya dan masyarakat sekitar. Sekitar 31 peserta berpartisipasi pada program ini, kegiatan dilakukan dengan metode penyuluhan langsung dan tidak langsung, monitoring dan evaluasi melalui kuesinoner. Pada dasarnya kualitas pupuk kompos dapat ditingkatkan jika memperhatikan beberapa parameter salah satunya yaitu nisbah C/N, mikroba perombak bahan organik memerlukan karbon sebagai sumber energi untuk pertumbuhan dan nitrogen untuk pembentukan protein. Mikroba terpilih tersebut juga dikenal sebagai Effective Microorganism 4 (EM4). Hasil pengabdian dapat memberikan informasi kepada masyarakat tentang pemanfaatan limbah rumah tangga dan pengolahannya menjadi pupuk organik cair serta mengurangi ketergantungan masyarakat dalam penggunaan pupuk kimia. Kata kunci: EM4; KSM; pupuk organik; sampah. ABSTRACTSrimenati Village is a sub-district in Sungailiat Subdistrict, Bangka Regency, which only has 1 garbage disposal location. Waste processing is generally only crushed and distributed to landfills and waste banks. So far, solid waste processing has only been carried out by Community Self-Help Groups (KSM). Less optimal compost processing that has been done so that the quality of compost produced is still low, the limited EM4 stimulator due to high costs and the lack of quality compost processing innovation. In this service program, counseling was conducted on improving the quality of household waste-based compost, community service partners, namely from the Srimenanti Jaya community self-help group (KSM) and the surrounding community. Approximately 31 participants participated in this program, activities were carried out by direct and indirect counseling methods as well as monitoring and evaluation through questionnaires. Basically, the quality of compost can be improved if you pay attention to several parameters, one of which is the C / N ratio, microbes that break down organic matter require carbon as an energy source for growth and nitrogen for protein formation. The selected microbes are also known as Effective Microorganism 4 (EM4). The results of this service can provide information to the community about the use of household waste and its processing into liquid organic fertilizer and reduce community dependence on the use of chemical fertilizers. Keywords: EM4; KSM; organic fertilizers; garbage.
Synthesis of Nano Silver using Bioreductor of Tristaniopsis merguensis Leaf Extracts and Its Antibacterial Activity Test Verry Andre Fabiani; Megawati Ayu Putri; Marhan Ebit Saputra; Della Puspita Indriyani
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.622 KB) | DOI: 10.20961/jkpk.v4i3.34617

Abstract

Synthesis nanosilver from pelawan leaf extract (Tristaniopsis merguensis) has been carried out. The variables of this study were variations in the concentration of AgNO3 1 mM, 1.5 mM and 2 mM. Pelawan leaf extract acted as a bioreductor that converts Ag+ to Ag0. The synthesis was carried out in a ratio of 1: 4 (opposition leaf extract: AgNO3 solution) at 70 °C for 1.5 hours. The results of the UV-Vis analysis showed the maximum at the 1 mM; 1.5 mM; 2 mM AgNO3 concentration were 391 nm, 392 nm and 400 nm, respectively. XRD analysis explained that the resulting nanosilver was crystalline and according the Scherrer equation an average particle size was of 22.8 nm. The antibacterial activity test of nanosilver was carried out by disc method, nanosilver showed the existence of strong antibacterial activity against E. coli and S. aureus bacteria..
PELATIHAN PEMBUATAN SIRUP BUAH NIPAH SEBAGAI PRODUK UNGGULAN DESA SEMPAN KABUPATEN BANGKA Nurhadini Nurhadini; Verry Andre Fabiani; Ristika Oktavia Asriza; Fajar Indah Puspita Sari
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 2, No 2 (2019): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.095 KB) | DOI: 10.31604/jpm.v2i2.101-105

Abstract

Sempan Village is one of the villages in Pemali District of Bangka Regency, Bangka Belitung Islands which do not yet have the featured products, while this village has nipah plants that are not used optimally. The nipah fruit can be further processed into a featured product of village i.e. syrup. The service program Chemistry Department is training Sempan Village society on the manufacture of syrup from nipah fruit. The method of this activity includes three stages i.e. preparation, implementation and evaluation. After this activity is carried out, the Sempan Village society have increased understanding, knowledge and motivation in utilizing nipah fruit into processed syrup products and this product is expected become one of the featured products of Sempan VillageKeywords: nipah fruit, syrup, Sempan Village
Co-Authors Adisyahputra Adisyahputra Adisyahputra, Adisyahputra Afriza, Gita Amelia, Addela Anak Agung Istri Sri Wiadnyani Anisa Indriawati Ary Samsiar Asmar Asmar Ayu Ratna Sari Bana Prilia Muharomah Della Puspita Indriyani Della Puspita Indriyani Della Puspita Indriyani Desti Silvia Desti Silvia Desy Yuliana Dalimunthe Dinda Liyana Eva Julianti Fahmi Rizal Fajar Indah Puspita Sari Fajar Indah Puspita Sari Febry Sutanti Fuspita Istiqomah Herman Aldila Herul Akbar Hutagalung, Soluna Desbait Ike Nur Amanah Ike Nur Amanah Ina Miranti Janiar Pitulima Jeni Susilawati Lestari, Iin Marhan Ebit Saputra Megawati Ayu Putri Megawati Ayu Putri Megiyo Megiyo Mellisa Nurul Safitri Nelly Wahyuni Nurhadini Nurhadini Putri, Megawati Ayu Putri, Restani Eka Rahmad Lingga Rezalia Annisa Ridho Brilliantoro Riko Irwanto Ristika Oktavia Asriza Rizka Felly Robby Gus Mahardika Sakhila, Shania Saraswati, Sabrina Sindi Atika Putri Victory, Shelly