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All Journal Jurnal Sains dan Seni ITS Jurnal Kimia Riset Briliant: Jurnal Riset dan Konseptual Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Communications in Science and Technology Akta Kimia Indonesia Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Community Development Journal: Jurnal Pengabdian Masyarakat Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Pengbdian Teknik Mesin Aceh International Journal of Science and Technology
Silvana Dwi Nurherdiana
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health

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Fabrication and characterization of fly ash-based geopolymer and its performance for immobilization of heavy metal cations Iqbal, Rendy Muhamad; Supriadi, Warih; Burhan, R.Y. Perry; Nurherdiana, Silvana Dwi; Hidayati, Ririn Eva; Subaer, Subaer; Bayuaji, Ridho; Fansuri, Hamzah
Communications in Science and Technology Vol 7 No 2 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.2.2022.868

Abstract

In this study, the geopolymer from fly ash as based-raw material has been examined on the ability of several heavy metal ions immobilization. The fly ash has been provided from PT IPMOMI which firstly analyzed the physical and chemical properties. Fly ash and heavy metals were mixed with an activator base until homogeneous, then cast into a cylindrical shape mold following ASTM C 39-86 and left for 7 days. After that, the geopolymer was characterized by SEM, FTIR, XRD, compressive strength test and TCLP. The diffractogram of PT. IPMOMI fly ash exhibited the existence of mullite, alumina and iron oxide phase, which were suitable with XRF result. From FTIR spectra, the vibration on finger print area appeared indicating the vibration of T-O-T from geopolymer network. The observation revealed that the addition of Pb2+ cations caused microcracking from SEM image and affected the compressive strength of the geopolymer. Sr2+ was an ion that was very easilyleached compared to other three ions, and it caused a weak interaction between Sr2+ and geopolymer network. The higher amount of metal ions into the geopolymer network reduced the compressive strength of geopolymer. Sr2+-geopolymer had a lower compressive strength compared to Pb2+, Cd2+, and Co2+.
Identifikasi Potensi Penambahan Limbah Batu Bara sebagai Penyedia Hara Pertumbuhan Tanaman Cabai: Identify the potential for adding coal waste as a provider of nutrients for chili plant growth Suri, Nabilah Atika; Rieswana, Yuried Diilan; Aisah, Aisah; Nandini, Atika; Fansuri, Hamzah; Nurherdiana, Silvana Dwi
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 8 No. 1 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2024.008.01.04

Abstract

Fly ash sebagai limbah pembakaran batu bara memiliki beragam kandungan senyawa utama seperti CaO, SiO2, Al2O3, Fe2O3, MgO, MnO, Na2O, K2O dan sebagian logam berat. Limbah sekam padi mencapai 20-30% dari gabah yang dihasilkan dan belum termanfaatkan secara optimal oleh petani. Oleh karena itu, pemanfaatan campuran fly ash dan sekam memerlukan kajian lebih lanjut sebagai inovasi produk pembenah tanah. Tujuan dari penelitian ini adalah untuk mengidentifikasi pemanfaatan fly ash dan sekam padi menjadi pembenah tanah atau pupuk berbasis ramah lingkungan. Fly ash dicampurkan pada komponen organik seperti sekam bakar, kotoran kambing dengan komposisi yang berbeda. Produk yang diperoleh selanjutnya diletakkan pada tanah tumbuhan cabai melalui metode sebar 0.5 g pada 1.5 kg tanah. Pengujian dilakukan pada tanah terkait nilai derajat keasaman, kelembaban dan pertumbuhan tanaman cabai sebagai indikator adanya pengaruh penambahan fly ash pada pertumbuhannya. Hasil  limbah fly ash dapat dimanfaatkan sebagai pembenah tanah dengan kisaran derajat keasaman antara 6,5 hingga 8,5 fly ash dengan kandungan nitrogen 0,49%, fosfor 0,18%, kalium 0,6% dengan nilai karbon 6,9% dan rasio C/N 14,08. Kondisi tersebut baik bagi tanah untuk tanaman cabai. Penambahan tinggi meningkat pada hari ke 1 hingga 9, sedangkan lebar daun cenderung tetap pada hari ke 3 hingga 9.
ENVIRONMENTALLY FRIENDLY BIFUNCTIONAL MATERIALS BASED ON ZnO/NATURAL ZEOLITE FOR METHYLENE BLUE DYE REMOVAL IN WATER Nugroho, Muhammad Garda; Putri, Bilgis Laily Pratama; Mukharomah, Nur Laili Alfiatin; Wibisono, Alvin Adrian; Nurherdiana, Silvana Dwi; Wafi, Abdul
Jurnal Kimia Riset Vol. 9 No. 2 (2024): December
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i2.65751

Abstract

The treatment of dye wastewater, particularly from the batik industry, poses significant environmental challenges. This study explores the potential of ZnO-coated clinoptilolite natural zeolite as a dual-functional material for efficient and eco-friendly wastewater treatment through adsorption and photocatalysis. This study employed various solvents, i.e., aquadest and ethylene glycol and different treatments of heating and sintering to ensure the ZnO-coated natural zeolite. The ZnO/zeolite composite achieved a dye degradation efficiency of up to 98.68% under UV irradiation within 90 minutes. Characterization through SEM, FTIR, and XRD analyses confirmed the successful synthesis and structural integrity of the ZnO/zeolite composite. We also conducted an analysis of operational costs and energy consumption associated with the use of these bifunctional materials. The results indicate that the potential for utilizing these materials as a treatment method is promising, given their ease of use and low energy consumption, and warrants further investigation.
Development of Silica-based Materials from Natural Sources as A Green Catalyst for Biofuel Production Nugraha, Reva Edra; Aziz, Abdul; Sunarti, A.R Yelvia; Nurherdiana, Silvana Dwi; Mumtazah, Zuhriah; Sholeha, Novia Amalia; Nurmawati, Ardika; Islamiyah, Syuaibatul; Nandini, Atika; Saputro, Erwan Adi
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.40369

Abstract

Mesoporous silica is a versatile material characterized by its highly ordered nanoporous structure with pore diameters ranging from 2 to 50 nanometers. This unique structure provides a large surface area and volume, making mesoporous silica an excellent candidate for various applications in adsorption, drug delivery, catalysis, and environmental remediation. Mesoporous silica can be synthesized using commercial or natural silica precursors such as mineral clay and other natural sources. Promising alternative sources of silica for synthesizing mesoporous materials encompass a range of materials, including various clay minerals such as kaolin, rectorite, halloysite, montmorillonite, sepiolite, hectorite, bentonite, talc, muscovite, paragonite, palygorskite, and chlorite. Other natural sources like beach sand, geothermal sludge, and sepiolite also show significant potential for mesoporous material synthesis. However, these sources have not been extensively explored and warrant further investigation in the field. The mesoporous silica from natural sources has been widely used as a catalyst for biofuel production via hydrocracking, catalytic cracking, and deoxygenation reactions
Optimization of Flavonoid Compounds from Avocado Seeds Using Ethanol Solvent through Response Surface Methodology (RSM) Laurentcya, Treyna Dara; Fergilang, Jibraltar; Sari, Ni Ketut; Nurherdiana, Silvana Dwi
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 2 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i2.742

Abstract

This research aimed to optimize the extraction of flavonoid compounds from avocado seeds (Persea Americana Mill.) using ethanol as a solvent through Response Surface Methodology (RSM). Avocado seeds are known to contain bioactive compounds, including flavonoids, which exhibit antioxidant properties. Extraction was performed via maceration using 96% ethanol, with varying extraction times (1–5 days) and seed powder-to-solvent ratios (10–50% w/v). The results demonstrated that prolonged extraction time and higher solvent ratios significantly increased flavonoid yield, peaking at 6.5090% (5 days, 50% w/v). RSM optimization (25 data points) identified optimal conditions at 4.99414 days and a 39.6367% w/v ratio, yielding 3.65815% flavonoids. GC-MS analysis detected degraded flavonoid derivatives (e.g., avocadenofuran), attributed to high-temperature processing. The study confirms ethanol-based maceration as an effective method for flavonoid extraction, with time and solvent ratio being critical factors. These findings support potential applications in the food and pharmaceutical industries for the development of antioxidant products. Contribution to Sustainable Development Goals (SDGs):SDG 3: Good Health and Well-beingSDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Pengaruh Aditif Metanol Dan Ketebalan Membran Terhadap Karakteristik Membran Berbasis Selulosa Asetat Gemilang, Evrina Cahya; Zulkaisi; Susilowati; Nurherdiana, Silvana Dwi
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 3 (2025): Volume 10 Nomor 3, Agustus 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i3.2068

Abstract

Membrane technology is a process capable of separating chemical species from a feed solution to produce permeate. In membrane fabrication, cellulose acetate polymer is commonly used due to its ability to form asymmetric membrane structures. Additives can be used to modify membrane morphology, especially pore formation. Methanol's high solubility in non-aqueous solvents makes it an efficient pore development additive. Membrane thickness affects membrane properties, particularly permeability. This study will look into how methanol additions and membrane thickness affect the properties of cellulose acetate-based membranes. The membranes were fabricated using the phase inversion method with methanol concentrations of (2, 4, 6, 8, and 10%) and membrane thicknesses of (100, 200, 300, 400, and 500 µm), employing N-Methyl Pyrrolidone (NMP) as the solvent and aquadest as the non-solvent. Characterization of the membranes involved contact angle analysis, porosity, water flux, and Scanning Electron Microscopy (SEM). The results revealed that the membranes were hydrophilic, with contact angle readings less than 90 degrees. The ideal membrane, with a thickness of 100 µm, a porosity value of 87.821%, and a water flux value of 363.967 L/m2 hour.
Impact of Plasticizer Type and Volume on the Properties of Bio-Plastics from Avocado Seed Starch with Chitosan Filler Susilowati, Susilowati; Putra, Galang Ananda; Ni’am, Hafizh Miftahin; Nurherdiana, Silvana Dwi
Jurnal Kimia Riset Vol. 10 No. 2 (2025): December
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkimris.v10i2.71977

Abstract

The starch content in avocado seeds is quite high, which is 79.45% with an amylose content of 29.55% and amylopectin of 49.9%. Avocado seeds contain polyphenols, flavonoids, triterpenoids, quinones, saponins, tannins, monoterpenoids and sesquiterpenoids. The high starch content in avocado seeds allows avocado seeds to be one of the alternative starch sources. The starch content in avocado seeds can be used as a raw material for making bio plastics, thereby reducing the amount of unused avocado seed waste. Bio plastic is an innovation to reduce plastic waste that is difficult to decompose. The main components of bio plastics are hydrocolloids or lipids or composites. Additional materials used in the manufacture of bio plastics are chitosan and plasticizers. Chitosan is useful for improving the tensile strength, elongation, and degradation properties of bio plastics, while plasticizers are useful for increasing the elasticity value of bio plastics. The purpose of this study was to determine the volume ratio of plasticizers and the effect of plasticizer types on the manufacture of bio plastics from avocado seed starch. This research also proves that the type and volume of plasticizer used can successfully produce bio plastics that meet the characteristic testing standards conducted. The results of functional group analysis using FTIR can form O-H bonds in bio plastics among starch, plasticizer and chitosan. Biodegradable results by utilizing soil microorganisms as assistants in the degradation process, bio plastics can be completely degraded for 20 days, as evidenced by perfectly degraded bio plastic sheets in the soil.
Co-Authors Abdul Aziz Abdul Wafi, Abdul Ahmad Iskandar Aisah Aisah Ardika Nurmawati, Ardika Asrianto, Rifky Asrianto Billah, Mu’tasim Ely Kurniati Erliyanti, Nove Kartika Erwan Adi Saputro Euis Nurul Hidayah Fansuri, , Hamzah Fergilang, Jibraltar Fitriasari, Rima Galih Suci Widyanto Gemilang, Evrina Cahya Habib, Mohammad Hasnan Hamzah Fansuri Handi Ramadhan Hidayati, Ririn Eva Iqbal, Rendy Muhamad Islamiyah, Syuaibatul Jariyah Jariyah Juliawan, Enry Kadir, Muhammad Fajar Abdul Kamur, Sudarwin Kusumawati, Yuly L, Irwan L.Urip Widodo, Yohandrik Novel Karaman Laurentcya, Treyna Dara Mohd Hafiz Dzarfan Othman Mu'tasim Billah Muhammad Hakam Muhammad Syaiful Mukharomah, Nur Laili Alfiatin Mutasim Billah Nandini , Atika Nandini, Atika Ni Ketut Sari Ni’am, Hafizh Miftahin Nugraha, Reva Edra Nugroho, Muhammad Garda Priyadarshini, Rossyda Putra, Galang Ananda Putri, Bilgis Laily Pratama R.Y. Perry Burhan, R.Y. Perry Rachmad Ramadhan Yogaswara Rachmad Ramadhan Yogaswara Ratna Ediati Ridho Bayuaji Rieswana, Yuried Diilan Rima Fitriasari Risnawati Risnawati Sholeha, Novia Amalia Sintha Soraya Santi Subaer - Sunarti, A.R Yelvia Supriadi, Warih Suri, Nabilah Atika Susilowati Susilowati Susilowati Syafsir Akhlus Syafsir Akhlus, Syafsir Titi Susilowati Titi Susilowati urniawan, Ahmad Triantono K Wahyu Arif Dharmawan Wahyu Prasetyo Utomo Wibisono, Alvin Adrian Widayanto, Galih Suci Yogaswara, Rachmad Ramadhan Zuhriah Mumtazah Zulkaisi